JPH01125478A - Cable dome structure in which main cable is arranged along chord - Google Patents

Abstract

PURPOSE: To enhance the strength by locking each of lower outer main cables to an edge ring connecting point in such a state as crossing with other two lower outer main cables at two lower outer support connecting points. CONSTITUTION: After providing a plurality of supports 11 at some intervals apart, edge rings 10 are provided in the tops of the supports 11. Secondly, lower outer main cables 12 are suspended from connecting points 10a-10j and mutually fixed at the lower outer support connecting point 20a. Thirdly, upper outer main cables 14 are suspended from connecting points 10a-10j and moved so that an upper outer connecting point 20b is formed. An outer support 20 is suspended from the connecting point 20b and connected to the connecting point 20a and the lower and upper outer radial cables 16, 18 are connected thereto so that an outer ring is provided. After an inner ring is provided similarly, a roof membrane is attached to the structure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to shelter structures, particularly structures using lightweight roof membranes.

(Conventional technology and its problems) An example of this type of structure is an air support structure.

These include tension structures, tent-like structures, arch support membranes, and free span point support systems. A review of textile tension structures for permanent buildings is given by the inventor in Dortmund, West Germany, in 1988.
There is a lecture entitled ``Decade of Textile Tension Structures for Permanent Buildings'' at the International Symposium on Academic Roof Structures held on September 10, 2017. More detailed background on this type of building is given in the 12 citations on pages 19 and 20 of the lecture abstract. An example of this type of structure is US Pat. No. 4,581,86 owned by the present inventor.
It is shown in No. 0. The abstract, its 12 citations, and this patent constitute prior art to the present invention.

The stability of the tension structure and the ability of Nono J to support the load depend on its shape and prestress. Usually, Ten-1 helical tension structure is a central support system that can utilize the suspension bridge concept and double cantilever. One or more apexes supported by a central mast is a common configuration.

The Flotsk Festival structure at SeaWorld in Orlando, Florida utilizes the tent principle to combine a vertical tent and its collapse.

The roof membrane is supported by radial cables running from the central column to the concrete edge beams. If internal support is not preferred, special means have to be developed to utilize the free span.

Arch support structures are one way to utilize free spans. - An example is the Barox department store in San José, Calif., where the woven roof is covered by U.S. Patent No. 3.
807.421, installed on the arch system. Another method of free-span construction is the point support system, in which, for example, a large A-frame supports the top of the main structure from above in cooperation with peripheral columns restrained by stay cables. , free span is performed. -For example,
There is an outdoor pavilion at Crown Center in Kansas City, Missouri. Incorporation of such an A-frame into a balanced stress system is described in my U.S. Patent No. 3.
No. 773.061. Other examples of free span tension structures are described or cited in the abstract above. For large or very large structures, the use of compression edge rings and short vertical compression struts in conjunction with cable network systems is particularly effective. The inventor's aforementioned US Pat. No. 4,581,860 discloses a shelter structure using a saddle-shaped cable dome system for large scale lightweight roof membranes. This structure combines the curvature of a saddle-shaped surface constrained by a bent edge ring with two sets of orthogonal cable networks separated by a pair of compression struts to create a curved surface that is loaded primarily in the compression direction. Realizes an effective structural system defined by the edge ring.

Preferred features of this general type of structure are high specific strength, ease of construction and maintenance, and low cost.

While much progress has been made in this area, there is a need to further improve these and other desirable features, and the present invention is directed to meeting that need.

SUMMARY OF THE INVENTION The present invention has particular utility in Stadium 1 amphitheaters and other large space facilities with horizontal edge rings and central high ceilings. It is an object of the present invention (1) to be easily and inexpensively constructed using commonly available materials and equipment; and (2) to provide a structural fabric membrane that forms a continuous water-resistant roof surface. Avoiding geometric incompatibilities between the roof and the supporting structure due to temperature differences, by using (
(3) reduce and simplify maintenance; and (4) create a structure that is aesthetically pleasing. The roof structure may be transparent and/or insulated in whole or in part. It is also possible to provide a retractable roof covering.

In one embodiment of the invention, the geometry exerts a compression force on a peripheral edge ring and perpendicular or inclined compression struts, which together with tension members (eg, high-strength cables) form a truss-like structure. The cables are carried directly or indirectly on the edge ring, so that the ring cable can be strung,
Prefabricated structures and multi-point lifting are not required. The main cable forms a simple span along a concentric chord. A textile membrane can be a component of the structure. however,
The stability of the main structure is not related to the fabric membrane. Because the structure is stressed by means of vertical struts, it does not require extensive stressing equipment or expensive adjustable cable connections.

The structure according to the invention uses a substantially rigid, generally elongated edge ring having cable attachment points.

The lower outer main cables are locked to the edge ring connection points such that each lower outer main cable crosses two other lower outer main cables at two lower outer strut connection points. The outer compression strut is supported by two lower outer main cables at the lower outer strut connection point and extends upwardly therefrom. The outer struts are concentrically spaced radially inwardly from the plan view upper edge ring.

The lower inner main cables are locked to the outer struts such that each lower inner main cable intersects two other lower inner main cables at a lower inner strut connection point. The inner compression strut is supported at the lower inner strut connection point by two lower inner main cables extending upwardly therefrom. The inner strut is spaced radially inwardly from the outer strut in plan view and forms concentric circles. In particular, a plurality of concentrically arranged inner strut systems may be used in a dome structure. The superstructure is supported on top of the edge ring and the outer and inner columns, and the roof membrane covers at least a portion of the structure.

The superstructure has an upper outer main cable and an upper inner main cable. Each upper outer main cable is anchored to a lip ring and intersects two other upper outer main cables at two upper outer strut attachment points, to which the upper outer strut upper portion is anchored. . Each upper inner main cable is anchored to the upper portion of the outer strut and intersects the other two upper inner main cables at an upper inner strut connection point to which the upper inner strut upper portion is anchored. Ru. The upper and lower outer strut attachment points are connected to the edge ring attachment point by upper and lower outer radiating cables, and the upper and lower inner strut attachment points are connected to the upper outer strut attachment point by upper and lower inner radiating cables.

In one embodiment, the upper portion of the structure is provided with a substantially rigid arch extending radially inwardly from the edge ring attachment point. The arch is anchored to the edge ring and the upper portions of the outer and inner struts. A radiating cable need not be used, but may be used if desired, especially to simplify the construction process.

Embodiments of the present invention specifically consider construction efficiency. For example, in an embodiment without an arch, after constructing the edge ring and the supports supporting it in an elevated position, the lower outer main cables are suspended from the edge ring connection points, one at a time. The lower outer main cable is then moved as needed;
connected to each other. Additionally, the upper outer main cable is suspended from its final position in an inverted position, ie, in a position approximating the lower outer main cable. The outer struts are then suspended from the inverted upper outer main cable. next,
The outer perimeter of the structure is completed by moving the outer struts upward and attaching them to the lower outer main cables. Next, the first ring is completed by installing upward and downward radiating cables. The construction process for the inner ring is similar, but
The difference is that the inner main cable is suspended from the upper outer strut connection point. Similar steps are repeated if the structure has more than one inner ring. The structure is stressed by jacking up the struts to move the upper and lower strut connection points away from each other. The roof membrane is then installed. The central part of the structure may be formed by attaching a central compression strut to the lower and upper central radiating cables which are anchored at the lower and upper parts to the lower inner strut connection points.

Variations using arches may be constructed as well.

The edge ring and lower and upper outer main cables are constructed as described above. These cables are then moved and coupled together as necessary to define a lower outer strut attachment point. The outer struts are then installed as described above. The radially outer portion of the arch can then be attached to the edge ring and the upper outer strut connection point and placed in its approximate final position. The inner main cable and inner strut may be similarly constructed, with the difference that the inner main cable is not locked directly to the edge ring, but to the upper outer strut connection point. The next inner portion of the arch is placed in approximately the final position on the upper outer strut attachment point and the upper inner strut attachment point.

If further inner rings are to be constructed, the process is repeated. A central strut anchored at the bottom to a radiating cable anchored to the upper attachment point of the innermost strut may also be used as described above. The central portion of the arch is attached to the top of the central column and to the general side upper column connection points. The final prestressing can be carried out by stretching the struts, for example telescoping struts, and then covering the structure with a roofing membrane, such as a textile. One form of woven roof structure suitable and effective for this cable dome system uses radial sections extending between radially disposed valley cables and corresponding edge ring attachment points connecting the tops of the appropriate columns. The fabric piece is carried on a ridge cable in the center of the radial section, and the ridge cable is carried on a floating strut suspended from an upper attachment point of the cable dome structure. In the example of reinforcement by arches,
The arch can be replaced with a valley cable although it is not required.

(Embodiments) Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1-4, a structure according to an embodiment of the invention is constructed in an elevated position on columns 11"--having a prismatic edge ring 10. In FIGS. The edge ring 10 is substantially rigid, made of reinforced concrete or the like, and extends generally laterally.

Its vertices are cable connection points 108-10d. Each lower outer main cable 12 connects every third edge ring junction in the illustrated example. For example, lower outer main cable 12 connects edge ring connection point 10a and edge ring connection point 10e. The outer compression struts 20 are spaced radially inwardly from the edge ring 10 in plan view and are concentric with the edge ring 10 . Each outer strut 20 has two lower outer main cables 1
Its lower part is supported by the lower outer support column connection point 20a located at the intersection of the two. For example, connection point 20a is at the intersection of cable 12 connecting edge ring connection points 10a and 108 and cable 12 connecting edge ring connection points 1Qc and 10Ω. As shown in FIG. 2, each lower outer main cable 12 intersects two lower outer strut connection points 20a. The upper structure has upper outer main cables 14, each upper outer main cable capable of (but not necessarily) bordering a corresponding lower outer main cable 12 in plan and extending from it in elevation. It is possible (but not required) to space upwardly and further connect the same edge ring attachment points as well.
.

It should be noted that in the illustrated example each upper main cable is aligned with a corresponding lower main cable in plan view;
However, this is not required.

For example, a lower (or upper) main cable may connect every fourth edge ring connection point, and a corresponding upper (lower) main cable may connect every second edge ring connection point. - The main cable can be arranged by connecting every other or more connection points in the shell. The upper main cable and the lower main cable do not have to be bordered in plan view. 2
The two upper inner main cables 14 connect to the upper outer strut connection point 2.
They cross each other at ob, and the upper part of the outer strut 20 is locked to this upper outer strut connection point 20b. For example, the upper outer main cable 14 connecting edge ring attachment points 10a and 10e and 10C and 100, respectively, connects the upper outer strut attachment point 20
Intersect at b. As shown in FIG. 3, each upper outer main cable intersects two upper outer strut connection points 20b. Furthermore, the outer ring of the structure has a lower outer radiating cable 16
It is possible, however, not necessary, to have an upper outward radiating cable 18. As shown in FIGS. 1-4, each cable 16 connects a corresponding edge ring connection point with a corresponding lower outer strut connection point, and each cable 16 connects a corresponding edge ring connection point with a corresponding lower outer strut connection point.
8 connects the corresponding edge ring connection point and the corresponding upper outer strut connection point 20b.

In the plan view of the embodiment of FIG. 5, each lower outer main cable 12 is aligned with a corresponding upper outer main cable 14 so that a set of outer main cables is depicted as a single line. Similarly, in the plan view of FIG. 5, each outer strut 20 has its lower and upper outer strut connection points 20a, 20b.
It is drawn as a point that coincides with In FIG. 5, cables 12, 14. Also shown are the cables and struts forming an inner ring spaced radially inwardly from the outer ring formed by struts 20 and cables 16.18. The inner ring is structurally similar to the outer ring except that its cables are anchored to the upper outer strut attachment point 20b rather than the edge ring attachment point. For example, FIGS.
As shown in FIG.
, +, and a lower inner main cable 24 and an upper inner main cable 26 extend between the upper outer strut connection point 2Ob, and these are connected to the inner strut at the lower inner strut connection point 22a and the upper inner strut connection point 22b. I support 22. Similar to the outer main cables, each lower inner main cable supports two inner struts 22, and each inner strut 22 is supported at the intersection of two lower inner main cables 24. Similarly, each upper inner main cable 26 is anchored to two inner struts 22 at an upper inner strut connection point 22b in the upper part of the inner strut 22, and each upper inner strut connection point 22b is connected to two upper inner main cables. 2
It is at the intersection of 6. As shown in Figures 4 and 5,
Each inner strut 22 may (but need not) be locked to the nearest upper outer strut attachment point 20b by a lower inner radiating cable 28 and an upper inner radiating cable 30.

Each cable 28 connects connection point 22a to connection point 20b, and each cable 30 connects connection point 22b to connection point 20b.

Each cable may consist of two or more separate sub-cables, which may make cable transport and installation easier, especially if long cables are mandatory due to long spans. The use of sub-cables also simplifies the connection of the strut connection points.

The structure of the invention provides design freedom in changing the radial distance from the edge ring to the ring formed by the outer strut and one or more rings formed by the inner ring, and in changing the slope of the radiating cable. This allows us to offer unprecedented adaptability.

If desired, inner struts 22 and inner cables 24.26.
One or more inner rings similar to the inner ring formed by 28.30 may also be added.

Each additional inner ring is supported on the upper strut attachment point of the preceding ring and is spaced radially inwardly from the preceding inner ring such that the first inner ring is supported on the upper attachment point 20b. For example, as shown in FIGS. 6 and 6a, the second inner ring includes second inner ring struts 22. Second lower inner main cable 34. Second upper inner main cable 36.
Second downward radiation cable 38 and second upward radiation cable 4
Formed by 0.

Since the structure of the present invention employs cantilevers inward from the edge ring, the center may be open or closed by a substructure compatible with the structure.

For example, as shown in FIG. The lower central radiating cable 44 connects the upper connection point 32b) of the innermost column 32 and the connection point 42b (located at the upper part of the center column 42) as well as the upper connection point 32b of the innermost column 32, in this case the connection point 32b) and a three-way central radiation cable 46. A roof membrane 48 is installed over the structure as described in detail below. As shown in FIG. 6, the structure has an edge ring 10 and radially spaced columns 11 carrying the audience seats.

Referring to FIG. 7, in order to construct a structure according to the present invention, support columns 11 are first constructed using conventional techniques for forming reinforced concrete support columns, and then edge rings are constructed. Build 10. Depending on the scale of the structure, the polygonal side portion of the illustrated edge ring 10 may be a prefabricated structure;
It can be pulled up and installed on the pillar 11. If this is not possible, the polygonal sides of the edge ring 10 may be removed in situ, e.g. one side at a time, at the edge ring connection points 108-108.
Casting can be performed while appropriately arranging j. next,
The lower outer main cables 12 are suspended from appropriate edge ring connection points 108-10j, for example one at a time. These are then moved as necessary to form a lower outer strut attachment point 20a and secured together at attachment point 20a. At this stage, each lower main cable 12 occupies a position like the three cables 12 shown in FIG. The upper outer main cable 14 is then suspended from the edge ring attachment points 10a-10j in an inverted position from its final position, ie in a position approximating the lower outer main cable 12. next,
The cables 14 are moved as necessary to form upper outer attachment points 20b, and the outer struts 20 are suspended from these attachment points 20b to form the three cables 14 and four struts 20 shown in FIG. Occupy an approximate position. The outer strut 20 is then moved upwardly relative to the lower outer cable 12 and the coupling point 20a, connecting the strut 20 to the coupling point 20a and coupling the lower and upper outer radiating cables 16.18 to the outer ring. is completed. The next inner ring is similarly constructed, but in this case outer strut attachment points 20b are used in place of edge ring attachment points 10a-10j.

If necessary, further subsequent inner rings are constructed in the same manner, ie using the upper strut connection points of the preceding ring for support. The retractable outer and inner struts can be used to apply the necessary stresses to the structure by jacking the upper and lower strut connection points apart. The center of the structure can remain open or can be built up. To construct the center section, first connect the lower center radiating cable 4 between the lower center connection point 42a and the upper strut connection point of the innermost ring.
4, then suspend the upper central radiating cable 46 between the upper central connection point 42b and the upper strut connection point of the innermost ring, and further suspend the central strut 42 from the connection point 42b,
Pull it up with a jack and attach the lower end to the lower central connection point 4.
It is sufficient to lock it to 2a. The roof membrane 48 can be attached to the structure using roof fabric or the like.

Other embodiments of the invention are shown in FIGS. 8 to 11. It differs from the embodiment described above in that its upper structure is reinforced by arches 52. Referring to FIGS. 8 and 9, each arch 52 extends between the edge ring attachment point and the center of the structure and may be comprised of multiple sections. for example,
The radially outermost portion extends from the edge ring 10 to the outer upper strut attachment point 20b, and its inner second portion extends radially from the attachment point 20b to the next inner attachment point 22b; This can be similarly repeated so that the radially innermost portion extends from the innermost ring struts to the center of the structure. In the central part of the structure, a central column and a central radiating cable network can be used as in the previous embodiment, and the central column can be replaced by a central tube 62 having the same function. The ring struts of the embodiment shown in FIGS. 8 and 9 are not vertical, whereas those of the embodiment described above are vertical. However, this does not limit the invention. This angle is a design choice and can be changed according to taste and need. FIG. 10 shows a cross-section of the edge ring 10, one outer lower main cable 12, two struts 22 and two upper main cables 14, and FIG. It shows that it can be constructed as a truss of material.

If further supplementary rules are desired, stay cables 54 or the like may be used in the embodiment of FIGS. Connect to the adjacent edge ring attachment point and, for inner struts, connect its upper attachment point to the two preceding strut ring
Connect to the two nearest lower strut attachment points.

The construction of the embodiment of FIGS. 8-11 is similar to that of the embodiment of FIGS. 1-7, the difference being that an arch section is added and the radiating cable can be omitted. It is. In the embodiment of FIGS. 8 to 11, in particular, the column 11 and the edge ring 10 are constructed in the same manner as in the first embodiment, and the lower outer main cable 12 is similarly suspended, moved and connected as necessary. A lower outer strut connection point 20a is formed. The outer upper main cable 16 is then suspended from the edge ring attachment point and the upper portion of the outer strut, moved and connected as necessary to form the outer upper strut attachment point 20b. Next, use a jack to pull up the strut 20 above the lower outer cable 14, and lock the bottom of the strut 20 to the lower outer strut connection point 20a. arch 52
The outermost portion of the radially outer end of the edge ring 10
and its radially inner end to the outer strut connection point 20b.
It is positioned by connecting to. Each subsequent inner ring is then similarly constructed.

FIG. 12 shows the edge ring 10, the columns 11 supporting it, the compression struts 20, 22, and the top view extending along the chord of the upper edge ring 10 and in this case two parallel sub-cables. an upper outer main cable 14 which is aligned in plan with the corresponding cable 12 (in this example) and also consists of two parallel one-nub cables, and a lower and upper outer radiating cable. 16,1
8 and each cable of the inner ring.

FIG. 13 shows an embodiment of the compression strut 2'0.22.32. The upper strut connection points 20b, 22b, 32b consist of a sleeve 64 with two 7-flanges 66,68. If the compression strut is the outer strut 20, the flange 66 is anchored to the upper radiating cable 18 which is connected to the edge ring attachment point, while the flange 8 is connected to the lower attachment point 22a of the compression strut of the first inner ring. downward radiation cable 28
is locked. The cable 14 conduit is connected to a full lower clamp plate 70a (attached to the sleeve 64 and the top of the strut 20) and a grooved upper clamp plate 0b (via bolts 72 to the lower plate 70a).
(that is, fixed to the support column 20). Other cables 14 that intersect at the same upper junction point 20b are similarly connected by means of raceways defined between clamp plates 74a and 74b. Above-mentioned downward radiation cable 2
Similar to 8, the upwardly radiating cable 30 can also be connected via the 7 langes. A similar structure is used for the lower connection point 20a, as shown in FIG. If the strut shown in the figure is the outer strut 20, the sleeve 76 has a flange 78 connected to the outer down-radiating cable 16. Sleeve 76 is attached to column 20 and clamp plate 8
0a is also attached to strut 20, but clamp plate 80a, with clamp plate 80b coupled thereto via bolts 82, similarly defines a conduit for cable 12. Another pair of clamp plates 84a.

84b is also connected by means of the same bolt 82,
Crossing pairs of sub-cables (forming cable 12)
Define raceways for As for the construction order, first plates 74a, 74b and 70a.

Upper bonding point 20b is formed by attaching the appropriate crossing cable 14 to the raceway defined by 70b and then attaching the appropriate radiating cable to the same bonding point if a radiating cable is used. Ru. Lower connection point 20
a is formed similarly, but this time using a lower main cable and a radiating cable. The appropriate post 20 is then passed first through the sleeve 76 and then through the upper sleeve 64 to abut the lower clamp plate (in this case the plate 70a attached to the sleeve 64). Post 20 is then jacked up to separate sleeves 64 and 76 a predetermined distance, and clamp plate 84b (and clamp plate 86, if desired) is secured to sleeve 76 by means of bolts 82.

As shown in detail in Figures 14a and 14b, the edge ring attachment points 10a-10j are unitary metal structures, such as welded structural steel, which are connected to the edge ring 10 in a known manner. fixed and supporting plate 88,
It has 90.92.94°96. An elevational view of one such plate 88 is shown in FIG. 14b (cross-sectional view along line A in FIG. 14a) and supports the lower cable 12 and the upper cable 14 as shown. Plate 88 in Figure 14b is shown supporting one sub-cable 12 and one sub-cable 14, although cables 12, 14 actually consist of two sub-cables each.

FIG. 15 shows the roof covering for the first embodiment. The roof membrane 48, which is a radial piece of roof fabric or the like, is laterally fixed by two valley cables 90, which valley cables 9o lie on the roof membrane 48 and are connected to edge ring connections through which they pass by means of suitable waterproof connectors. point and the upper strut connection point. The ridge cable 92 is below the roof membrane 48 and is anchored to the top of the floating strut 94.96.
are each string cable 94a, 94b and 96a, 96b
is locked. The ridge cable 92 has two radially outer portions.
It is divided into two parts 92a, 92b, and these two parts are connected to the joining point of the edge ring 10. Roof membrane piece 48
The radially outer end of is attached to the edge ring 10 by a waterproof clamp or other means. As for the construction order,
First, the cables 94a, 94b and 96a, 96b are constructed, the roof membrane piece 48 is laid, and the valley cable 90. Attach the ridge cable 92 and its ends 92a and 92b.
Suspend the floating branch 94.96 from the ridge cable and finally jack the floating strut to the supporting cable using a bond connection and extension technique similar to that described with respect to Figures 13-14b. tension the roof membrane by pulling it up.

FIG. 16 shows a second structure using the reinforced arch 56 according to the present invention.
A roof membrane piece for an example is shown. As shown, the roof membrane strips are attached similar to those described above, with the difference that the valley cables 90 are attached to the arches 56 rather than to the upper strut attachment points. The radially outer ends of the roof membrane strips are attached to the outer periphery of the edge ring 10 in the figure. If the arch is a continuous curve, for example, it is preferable to omit the valley cable.

On the other hand, it is more preferred to use valley cables if the arch is comprised of sections extending along straight lines between radially spaced strut connection points.

FIG. 17 does not show an example of the use of the upper and lower main cables without edges in the plan view. In the illustrated example, the lower (or upper) outer main cable 12 (or 14) connects the edge ring connection points 10a and 1Of, while the corresponding upper (or lower) outer main cable pull 14 (or 12) edge ring 10
Connect b and 10e. The same format can also be applied to the inner ring.

The upper and lower strut connection points can form upper and lower surfaces of different slopes. For example, the roof can be flatter than the plane formed by the lower strut connection points. If desired,
Night curtains can be installed below the roof membrane.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of a structure according to an embodiment of the present invention;
Figure 2 is an elevation view of the lower main cable used in the structure shown in Figure 1, Figure 3 is an elevation view of the upper main cable used in the structure shown in Figure 1, and Figure 4 is an elevation view of the upper main cable used in the structure shown in Figure 1. Figure 5 is an elevational view of the spread cables and struts used in the structure shown; Figure 5 is a plan view of the nearly completed structure; Figure 5a is a view of the two outer branches, their radiating cables, inner main cables and struts; 6 is a partial sectional view of the structure of FIG. 1 applied to the stadium; FIG. 6a is a partial cross-sectional view of the structure of FIG.
7 is a partial perspective view showing the construction process of the structure of FIG. 1, and FIG. 8 is an alternative implementation using an arch-reinforced ten-piece structure. A partially cutaway view of the structure according to the example, FIG. 9 is a partial sectional view taken along line A in FIG. 8, FIG. 10 is a sectional view taken along line B in FIG. 8, and FIG. Partial sectional view taken along line C in Figure 8, No. 1
2 is a partial perspective view of a structure according to the first embodiment of the present invention,
Fig. 13 is a partial sectional view showing the compression strut, -3/I - Fig. 14a is a plan view of the edge ring connection point, Fig. 14b is a sectional view taken along line A in Fig. 14a, and Fig. 15 is the main FIG. 16 is a partial perspective view showing a roof covering of a structure according to a first embodiment of the invention, FIG. 16 is a partial perspective view showing a roof covering of a structure according to a second embodiment of the invention, and FIG. 17 is a main cable and FIG. 3 is a partial plan view of the edge ring. 10... Edge rings 10a to 10j... Edge ring connection point 11...
...Column 12...Lower outer main cable 14...Upper outer main cable 16...Lower outer radiation cable 18...
- Upper outer radiation cable 20...Outer support 20a...Lower outer support support connection point 20b...Upper outer support support connection point 22...Inner support 22a...Lower inner support support connection point 22 b - Upper inner column connection point 24...
・Lower inner main cable 26... Upper inner main cable 28... Lower inner radiation cable 30...
・Upper inner radiating cable 42...Central support 48...Roof membrane 52...Arch patent applicant Horst Elle, Berger agent Patent attorney - Kensuke Shiro
Patent attorney Noritaka HarashimaFIG / ・Deaf

Claims (14)

[Claims] (1) a substantially rigid and generally elongated edge ring having a cable attachment point; an outer compression strut spaced radially inwardly from the edge ring in plan; and a lower section connecting the edge ring attachment point; an outer main cable, an inner compression strut spaced radially inward from the outer strut in plan view, a lower inner main cable connecting the upper portions of the outer strut, the edge ring and upper portions of the outer and inner struts; a cable dome structure having a superstructure supported by a roof membrane, each lower outer main cable intersecting two other lower outer main cables at two lower outer strut connection points; each outer strut is supported at the lower outer strut connection point by two of the lower outer main cables and extends upwardly therefrom;
Each lower inner main cable connects to the other two at the lower inner strut connection point.
two lower inner main cables, each inner strut having two
A cable dome structure supported at and extending upwardly from the lower inner strut connection point by two of the lower inner main cables, the roof membrane covering at least a portion of the system. (2) the superstructure comprises an upper outer main cable connecting the edge ring connection points and an upper inner main cable connecting the upper portion of the outer strut, each upper outer main cable connecting two upper outer main cables; intersects the other two upper outer main cables at the strut connection point, the upper portion of the outer strut is locked to the other two upper outer main cables at the upper outer strut connection point, and the upper inner strut The cable crosses the other two upper inner main cables at the upper inner strut connection point, and the upper part of the inner strut is locked to the two upper inner main cables at the upper inner strut connection point. A cable dome structure according to claim 1. (3) a lower outer radiating cable connecting the edge ring connecting point and the lower outer strut connecting point; an upper outer radiating cable connecting the edge ring connecting point and the upper outer strut connecting point; and the upper outer strut connecting point. Claim 1, further comprising: a lower inner radiating cable connecting the upper outer strut connecting point to the lower inner strut connecting point; and an upper inner radiating cable connecting the upper outer strut connecting point and the upper inner strut connecting point. Cable dome structure according to item 2. (4) the lower main cable has a substantially concave surface in elevation;
4. A cable dome structure according to claim 3, wherein said upper main cable is substantially convex in elevation. (5) In a plan view, each of the main cables is deviated in the direction of the edge ring or in the opposite direction from the chord formed by connecting the connecting points to which it is connected. Cable dome structure. (6) The cable dome structure according to claim 5, wherein the upper outer strut connection point is closer to the edge ring in elevation than the lower outer strut connection point. (7) A claim further comprising a central column having an upper portion located higher than an upper portion of the column, and a structure for supporting the central column located approximately at the center of the edge ring in plan view. The cable dome structure according to item 6. 8. The cable dome structure of claim 7, wherein said edge ring is polygonal with at least eight sides. (9) The cable dome structure according to claim 1, wherein the upper main cable is not aligned with the lower main cable in a plan view. (10) the superstructure includes a substantially rigid reinforcing arch extending radially inwardly from the edge ring attachment point, the arch comprising an upper portion of the edge ring and the outer strut and one or more of the inner struts; 3. The cable dome structure according to claim 2, wherein the cable dome structure is supported by a cable dome structure. (11) the superstructure includes a substantially rigid reinforcing arch extending radially inwardly from the edge ring attachment point, the arch comprising an upper portion of the edge ring and the outer strut and one or more of the inner struts; A cable dome structure according to claim 1, characterized in that it is supported by a cable dome structure. (12) a substantially rigid and generally elongately extending edge ring having a cable attachment point; an outer compression strut spaced radially inwardly from the edge ring in plan view; and upper and lower outer main cables; A cable dome structure having an inner compression strut spaced radially inwardly from the outer strut as shown in the figure, upper and lower inner main cables, and a roof membrane,
Each of the upper and lower outer main cables is supported at opposite ends thereof at cable connection points spaced apart from each other along the edge ring with at least two cable connection points therebetween, and each of the lower outer main cables is connected to a lower outer strut. intersects at least two other said lower outer main cables at a connection point, each said upper outer main cable intersects at least two other said upper outer main cables at an upper outer strut connection point; the cables and the upper and lower strut attachment points are spaced apart from each other in elevation, the upper outer main cable being generally convex in elevation, while the lower outer main cable being generally concave in elevation; each of the upper and lower inner main cables is supported at both ends at the upper outer strut connection point, each of the lower inner main cables intersects at least two other of the lower inner main cables at the lower inner strut connection point; each upper inner main cable intersects at least two other upper inner main cables at an upper inner strut attachment point, the lower and upper inner cables and the upper and lower strut attachment points being spaced apart from each other in elevation; a cable dome structure characterized in that the upper inner main cable is generally convex in elevation, while the lower inner main cable is substantially concave in elevation, and the roof membrane covers at least a portion of the system. thing. (13) The cable dome structure according to claim 12, further comprising an edge ring support structure that supports at least a portion of the edge ring in an elevated position. (14) an outer radiator cable supported at both ends by the cable connection point and the upper or lower outer strut connection point; and an inner radiator cable supported at both ends by the upper outer strut connection point and the upper or lower inner strut connection point. 13. The cable dome structure of claim 12, further comprising a cable.