US3209508A - Device for installing and removing truss frames, girders, and the like - Google Patents

Device for installing and removing truss frames, girders, and the like Download PDF

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US3209508A
US3209508A US189481A US18948162A US3209508A US 3209508 A US3209508 A US 3209508A US 189481 A US189481 A US 189481A US 18948162 A US18948162 A US 18948162A US 3209508 A US3209508 A US 3209508A
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Prior art keywords
truss frame
bearing
frame
bearing plate
truss
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US189481A
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Hunnebeck Emil Mauritz
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/16—Members, e.g. consoles, for attachment to the wall to support girders, beams, or the like carrying forms or moulds for floors, lintels, or transoms
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/36—Bearings or like supports allowing movement
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/40—Arched girders or portal frames of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E04G11/52—Girders, beams, or the like as supporting members for forms of several units arranged one after another
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0495—Truss like structures composed of separate truss elements the truss elements being located in several non-parallel surfaces

Definitions

  • FIG. 70 DEVICE FOR INSTALLING AND REMOVING TRUSS FRAMES, GIRDERS, AND THE LIKE Filed April 23, 1962 3 Sheets-Sheet 3 FIG. 9 FIG. 70
  • the present invention relates to a device for the installation and removal of truss frames, girders, or the like either of a straight or arched shape and either with or Without a lower trussing, and especially of such truss frames or girders which are assembled of several structural units and may be used either directly for the construction of bridges, removable hangars, or other larger buildings, or as supporting means in the construction of bridges, underpasses, and the like of reinforced concrete.
  • the invention relates to a device which is connected to an end support of such a truss frame or girder and consists of a bearing unit for such an end support which is composed of several members and provided with a bearing member which is adjustable so as to permit the distance between its bearing point, for example, on a stationary abutment, and the truss frame itself to be varied.
  • Such devices are used for solving many of the difiiculties occurring when mounting or seating a truss frame and also when removing it.
  • the supporting truss frame or girder which is first required therefor is elastically bent when the load of the concrete structure is applied thereon.
  • this is accomplished by the operation of a large number of turnbuckles.
  • all of the turnbuckles must again be reset to their original positions in order to return the truss frame to its proper ice shape. This obviously requires a great length of time and also involves the danger that the truss frame may not regain exactly its original shape.
  • end elements which serve as horizontal form supports or the like, each of which consists of upper tension and compression rods which are arranged in a triangular formation and in which the upper end of the compression rod is butt-jointed to the upper boom of the truss frame, while the lower end of this compression rod is flexibly connected by a turnbuckle to the lower boom of the truss frame.
  • the end unit which may be connected to the upper boom of the truss frame so as to be adjustable in length and in a manner so that the joint which connects the upper and lower parts of this end unit to each other as well as the joint which connects the upper part to the truss frame are both provided on an upper part of the end unit and both end units are adjustable relative to each other in various adjusted positions.
  • the lower part of the device according to the invention which is connected to the compression area of the truss frame and usually comprises a turnbuckle should be designed so as to permit the end unit to be adjustable to a sufficient length. At any horizontal adjustment of the bearing member of theend unit, this member should be pivotable upwardly at least to the extent to the flexure of the truss frame when it is subjected to a full load, and downwardly to approximately one half the height of the truss frame and at least to one half the height of the associated end girder.
  • the device according to the invention permits the bearing members to be drawn inwardly by reducing the length of the lower parts of the end unit so that the truss frame will then disengage from the encased concrete structure after it has set.
  • the flexible connection of the lower part of the end unit to the upper part thereof is preferably designed so as to lie within the point of intersection of the neutral axes of both parts, and it is then very advisable to insure that this point of intersection lies above the point of engagement of the bearing force so that a plane extending in the direction of the latter intersects with the point of intersection of the neutral axes of the two parts of the end unit.
  • the free end of the upper part of the end unit is provided with a rounded bearing member which is adapted to rest on a plate which, in turn, is rested on an abutment.
  • the pivoting movement of the upper part of the end unit for raising and lowering the truss frame results in a horizontal movement of the free end of this upper part.
  • the bearing member is made of a rounded shape, it will be able to roll over the bearing plate and will thus facilitate the horizontal movement.
  • the rounded bearing member is preferably provided with a bore or an elongated aperture or the like through which a pin is inserted which is prevented from becoming entirely disconnected from the bearing member and the end unit by being provided on its upper end above the bearing member with a disk, while the lower end of this connecting pin is secured to the bearing plate.
  • the bearing plate is irremovably connected to the bearing member, although it permits the plate to be shifted and turned relative to the bearing member.
  • the plate may also be mounted on an abutment at an inclination to the plane of the truss frame, for example, for the erection of a bridge which extends at an angle.
  • the bearing plate is made adjustable in the longitudinal direction of the truss frame.
  • FIGURE 1 shows a diagrammatic side view of a truss frame which is composed of several structural elements and is provided with a trussing and with two of the devices according to the invention for raising and lowering the truss frame which is herein shown in a raised position;
  • FIGURE 2 shows the truss frame according to FIG- URE l in an intermediate position
  • FIGURE 3 shows the truss frame according to FIG- URES 1 and 2 in a lowered position
  • FIGURE 4 shows the truss frame according to FIG- URE 2 in a position in which only one end of the frame is lowered;
  • FIGURE 5 shows a detail side view of one of the de vices according to the invention which is connected to an end girder of a truss frame which is composed of 4 several parts and is partly shown in the same position as in FIGURE 2;
  • FIGURE 6 shows a side view similar to that of FIG- URE 5 but of a modification of the device according to the invention in connection with a truss frame;
  • FIGURE 7 shows a plan view of the device and the truss frame according to FIGURE 6;
  • FIGURE 8 shows an enlarged side view, partly in section of the device according to FIGURE 6, but without the lower part of the end unit;
  • FIGURE 9 shows a side view of a further modification of a part of the device according to the invention.
  • FIGURE 10 shows a cross section taken along line XX of FIGURE 9;
  • FIGURE 11 shows a side view of a part of an arched truss frame with the device according to the invention; while FIGURE 12 shows a side view of still another modification of the invention.
  • the truss frame or girder as illustrated in FIGURES 1 to 4 consists of two structural elements or units which as seen in a side view, form trapezoids with equal upper and lower sides and of two structural elements 2 which in a side view have substantially the shape of parallelograms and form the end girders of the truss frame.
  • the upper booms 3 and '4 of units 1 and 2 are connected to each other in a conventional manner by means of bolts 5 or the like, while the lower booms 6 and 7 are indirectly connected by means of turnbuckles 8. By tightening the turnbuckles 8, the truss frame which is composed of four structural units may be given the required superelevation.
  • the truss frame is trussed at the lower side by tension rods 9 of a constant length, tension rods 9' which may be adjusted in length by means of a turnbuckle 11, and compression rods 10 and 10'.
  • the tension rods are pivotably connected to each other and the two outer tension rods 9 are in addition pivotably connected to the lower booms 7 of the end supports 2.
  • the compression rods 10 and 10 are pivotably connected to the tension rods and also to the upper booms of the structural units 1 and 2.
  • the entire framework which is preferably superelevated in order to compensate for the load which it has to take up, for example, in the construction of a concrete bridge constitutes a unit which is rigid in itself.
  • the upper members 13 of the bearing device according to the invention which is capable of being raised or low ered are pivotably connected to the upper booms 4 of the end girders 2 by means of bolts 12 or the like.
  • This upper member 13 may consist either of one or two parts.
  • this upper member 13 consists of two parts which are slidable relative to each other and may be locked to each other in the particular adjusted position by a bolt 14 or the like, while in the case according to FIGURES 6 and 7 it is assumed that each upper member 13 consists of only one piece, even though it may be composed of several rigidly connected parts.
  • a number of apertures 15 and 16 as shown in FIGURE 5, or 17 as shown in FIGURE 6 permit the upper member of the bearing unit to be adjusted in length.
  • each end support 2 has a turnbuckle 18 pivotably connected thereto which serves as the lower member of the bearing unit.
  • the joint is formed by a bolt 19 or the like which may also serve at the same time for securing a tension rod 9 if the truss frame is to be provided with a lower trussing.
  • the other end of each trunbuckle 18 is pivotably connected by means of a bolt 20 or the like to the associated upper member 13, that is, in the embodiment according to FIGURE 5 at a point vertically above the point where the reactive bearing force A engages.
  • the pivot point is spaced from the bearing point and the turnbuckle 18 on the lower boom is connected by a bolt 21 or the like to the upper member 13.
  • each upper member 13 is rigidly secured to a rounded bearing member 22 or 22, respectively.
  • each bearing member 22 or 22' is provided with a bore or elongated aperture 23 through which a pin 24 passes, the lower end of which is secured to a plate 25, for example, by being screwed therein, while its upper end is rigidly secured to a disk 26 which prevents the bearing plate 25 from falling off the upper member 13 when the latter is raised.
  • Plate 25 which is adapted to rest on an abutment 27 and is slidable relative thereto is in this manner not only fixed in position relative to the upper member 13 but can also be turned relative to the bearing member and the truss frame. Since when the truss frame is lifted, each bearing member will shift from the position as shown in FIGURE 2 to the position as shown in FIGURE 1 or when the truss frame is lowered from the position according to FIGURE 2 to the position according to FIGURE 3 or FIGURE 4, the elongated aperture 23 extends in the direction of the plane of the framework. The distance 1 between the bearing points of the super-elevated framework therefore changes, and it decreases by the amount of A1 or A1 if only one end of the framework is lowered or raised.
  • FIGURES 1, 3, and 4 it is indicated in dotted lines in FIGURES 1, 3, and 4 not only in which position the upper and lower members of the bearing unit will be when the truss frame is neither raised nor lowered, that is, when they will be in the position according to FIG- URE 2, but it is also indicated in FIGURE 6 in dot-anddash lines in which positions the bearing member will be after the frame has been raised and lowered.
  • FIGURE 6 In order to illustrate the horizontal displacement of the bearing member as clearly as possible, it has been assumed in FIGURE 6 that the truss frame is stationary and the bearing member 22 together with the bearing plate 25 and the abutment 27 are raised or lowered.
  • FIGURE 6 It may be clearly seen from FIGURE 6 that by reducing the distance between the connecting points of turnbuckles 18, the truss frame may be raised relative to the stationary abutment 27, while by increasing the distance between the connecting points of turnbuckles 18, the truss frame may be lowered from the position as shown in full lines.
  • the change in span in the first case is indicated in FIGURE 6 as amounting to A1, and in the second case to A1
  • the movement of the bearing member 22 which corresponds to the change in length Al or A1 is made possible by the elongated aperture 23 or the like which lies within the perpendicular plane of the truss frame.
  • FIGURES 9 to 11 A modification of the bearing member which is secured to the upper member 13 is illustrated in FIGURES 9 to 11.
  • the curved surface 28 of the rounded bearing member 22' according to FIGURE 8 is in this case subdivided into two surfaces 28' which are spaced at a distance e from each other and extend upwardly approximately to the upper edge 29 of the upper member 13 of the bearing unit.
  • Each of these surfaces 28' of the bearing member 22 forms the outer surface of one curved web of an L-shaped section member, the other web of which is secured to the upper member 13.
  • the inner surfaces of the two webs of the L-shaped section members which extend parallel to the curved surfaces 28' are partly covered by but spaced from a mushroom-shaped hollow member 30 which is secured to plate 25', for example, by being welded thereto. This permits a truss frame which is provided with at least one end bearing unit con- -member 22 which is pivotably secured to the upper member 13.
  • a device for installing and removing a truss frame having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit composed of two members, a bearing plate adapted to be rested on a stationary support, means pivotally connecting one of said members to one end of the upper boom of said truss frame and to said bearing plate so as to be pivotable relative to and within the plane of said frame and relative to said bearing plate, said one member comprising several parts, and means for adjusting said parts relative to each other to vary the total length of said one member.
  • a device for installing and removing a truss frame having upper and lower booms and used in the construction of bridges, removable hangar-like structures or the like comprising at least one end bearing unit composed of two members, a bearing plate adapted to be rested on a stationary support, and means pivotally connecting one of said members to one end of the upper boom of said truss frame so as to be pivotable relative to said frame and Within the plane of said frame and means connecting said one of said members to said bearing plate so as to be rockable relative thereto, said means pivotally connecting comprising a pivot element at one end of said one member, the other of said two members comprising a lengthwise adjustable member pivotally connected at one end to said one member, pivot connecting means connecting the other end of said adjustable member to the end of the lower boom of said truss frame and means including said adjustable member for causing movement of said one of said members about said pivot element and rockable movement on said plate to effectuate movement of said truss frame in said plane.
  • a device for installing and removing a truss frame having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit, having an upper member and a lower member, a bearing plate, means pivotally connecting said upper member to one end of the upper boom of said truss frame and to said bearing plate so as to be pivotable relative to and within the plane of said frame and relative to said bearing plate, means pivotably connecting said lower member to the lower boom of said truss frame, and means for increasing the length of said lower member and thereby causing pivotal movement of said upper member to such an extent that, when said bearing plate is rested on the upper surface of said support, the truss frame may be lowered relative to said surface at least for a distance equal to the flexure of the truss frame when said frame is subjected to a maximum load.
  • said device comprising at least one end bearing unit, having an upper member and a lower member, a bearing plate, means pivotally connecting said upper member to one end of the upper boom of said truss frame and to said bearing plate so as to be pivotable relative to and within the plane of said frame and relative to said bearing plate, means pivotably connecting said lower member to the lower boom of said truss frame, and means for reducing the length of said lower member to cause pivoting of said upper member on said one end of said upper boom to such an extent that, when said bearing plate is rested on the upper surface of a stationary support, said upper surface will be disposed substantially at a level even with the center of the height of the adjacent end of said truss frame.
  • a device for installing and removing a truss frame having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit, having an upper member and a lower member, a bearing plate, means pivotally connecting said upper member to one end of the upper boom of said truss frame and to said bearing plate so as to be pivotable relative to and within the plane of said frame and relative to said bearing plate, means pivotably connecting said lower member to the lower boom of said truss frame, means for varying the length of said upper and lower members, and means for pivotably connecting said upper and lower members to each other substantially at the point of intersection of the neutral axes of said members.
  • a device for installing and removing a truss frame having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit, having an upper member and a lower member, a bearing plate, means pivotally connecting said upper member to one end of the upper boom of said truss frame and to said bearing plate so as to be pivotable relative to and within the plane of said frame and relative to said bearing plate, means pivotably connecting said lower member to the lower boom of said truss frame, means for varying the length of said upper and lower members, and means for pivotably connecting said upper and lower members to each other substantially at the point of intersection of the neutral axes of said members, said point of intersection being disposed within a plane higher than the plane within which the reactive bearing force acts upon said bearing plate when resting on said support.
  • a device for installing and removing a truss frame, having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit composed of several members, means pivotably connecting one end of one of said members to one end of the upper boom of said truss frame, a bearing member connected to the other end of said member and having a rounded outer surface, a bearing plate adapted to be rested on a stationary support, and means connecting said bearing member to said bearing plate in a manner so as to permit said bearing member to rest with its rounded surface on said bearing plate and to roll along said bearing plate when said member of said bearing unit and said bearing plate are pivoted relative to each other, said means connecting said bearing member to said bearing plate comprising a member fastened to said plate and movably connected to said bearing member.
  • a device for installing and removing a truss frame, having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit composed of several members, means pivotably connecting one end of one of said members to one end of the upper boom of said truss frame, a bearing member connected to the other end of said member and having a rounded outer surface, a bearing plate adapted to be rested on a stationary support, and means connecting said bearing member to said bearing plate in a manner so as to permit said bearing member to rest with its rounded surface on said bearing plate and to roll along said bearing plate when said member of said bearing unit and said bearing plate are pivoted relative to each other, and also to permit said bearing member and said bearing plate to pivot relative to each other about an axis extending vertically to the upper surface of said plate, said means connecting said bearing member to said bearing plate comprising a pin member extending loosely through said bearing member and secured to said plate.
  • a device for installing and removing a truss frame having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit composed of several members, means pivotably connecting one end of one of said members to one end of the upper boom of said truss frame, a bearing plate adapted to be rested on a stationary support, and means connecting said bearing plate to the other end of said member so that said plate and said member are pivotable relative to each other and said plate is also adjustable in the longitudinal direction of said truss frame, said means connecting said bearing plate to the other end of said member comprising adjustable pin and slot means.
  • a device for installing and removing a truss frame, having upper and lower booms and used in the construction of bridges, removable hangarlike structures or the like comprising at least one end bearing unit composed of several members, means pivotably connecting one end of one of said members to one end of the upper boom of said truss frame, a bearing member connected to the other end of said member and having a rounded outer surface, a bearing plate adapted to be rested on a stationary support, and means loosely but irremovably connecting said bearing member to said bearing plate in a manner so as to permit said bearing member to rest with its rounded surface on said bearing plate and to roll along said bearing plate when said member of said bearing unit and said bearing plate are pivoted relative to each other.
  • a device for installing and removing a truss frame having upper and lower booms and used for the construction of bridges, removable hangarlike structures or the like or as supporting means when building bridges or other structures of concrete and comprising at least one end bearing unit composed of several members, means for pivotably connecting one end of one of said members to one end of the upper boom of said truss frame, a hearing member connected to the other end of said member and having a rounded lower surface and an aperture extending through said bearing member substantially radially to said rounded surface, a bearing plate adapted to be rested on a stationary support, and a rod-shaped member secured at one end to said plate and having a diameter smaller than said aperture and extending loosely through said aperture, and a stop member secured to the other end of said rod and spaced from and located above the upper surface of said bearing member when said bearing member rests on said plate and having a larger diameter than said aperture.
  • a device for installing and removing a truss frame having upper and lower booms and used for the construction of bridges, removable hangarlike structures or the like or as supporting means when building bridges or other structures of concrete and comprising at least one end bearing unit composed of several members, means for pivotably connecting one end of one of said members to one end of the upper boom of said truss frame, a bearing member connected to the other end of said member and having a rounded lower surface and an aperture extending through said bearing member substantially radially to said rounded surface and being elongated with its longitudinal axis extending in the direction of said truss frame, a bearing plate adapted to be rested on a station- References Cited by the Examiner ary support, and a rod-shaped member secured at one UNITED STATES PATENTS end to said plate and extending loosely through Said 2 9 5 2 4 5 1 Leonard 189 37 aperture, and a stop member secured to the other end of 5 3,029,913 4/62 Liesenfeld 189-

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Bridges Or Land Bridges (AREA)
US189481A 1961-04-27 1962-04-23 Device for installing and removing truss frames, girders, and the like Expired - Lifetime US3209508A (en)

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DE1961H0042431 DE1434341A1 (de) 1961-04-27 1961-04-27 Vorrichtung zum Ein- und Ausbau von Tragwerken

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US3209508A true US3209508A (en) 1965-10-05

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US (1) US3209508A (de)
AT (1) AT238756B (de)
CH (1) CH395163A (de)
DE (1) DE1434341A1 (de)
FR (1) FR1320609A (de)
GB (1) GB1006667A (de)

Cited By (10)

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US4259825A (en) * 1979-02-23 1981-04-07 Nasa Foldable beam
US4682460A (en) * 1986-04-16 1987-07-28 Trus Joist Corporation Open web structural support mounting bracket and length adjustable web member
US4745724A (en) * 1986-04-16 1988-05-24 Trus Joist Corporation Open web structural support member of adjustable length with incremental adjustment of end web member
US4821480A (en) * 1988-06-01 1989-04-18 Butler Manufacturing Company Adjustable sidewall connection for roof panel support joists
US20110016645A1 (en) * 2009-07-27 2011-01-27 Paul Westley Porter Apparatus and Method for Replacing a Bridge Using a Pre-Cast Construction Techniques
US20120011665A1 (en) * 2010-07-13 2012-01-19 Paul Westley Porter Bridge Shoring System
WO2017127947A1 (de) * 2016-01-27 2017-08-03 Nüssli (Switzerland) Ltd. Tragstruktur für einen mehrfach auf- und abbaubaren hallen-, bühnen-, tribünen- oder brückenbau
CN107653781A (zh) * 2017-09-20 2018-02-02 龙元建设集团股份有限公司 用于盖梁现浇施工的大钢管桁架及施工方法
US20190194945A1 (en) * 2017-11-20 2019-06-27 Jessica Manness Engineering Inc. Auxiliary Stiffener and Customization of Prefabricated Trusses Using Same
CN113668408A (zh) * 2021-08-24 2021-11-19 中铁工程设计咨询集团有限公司 一种自落梁转体球铰

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FI822011A7 (fi) * 1981-06-18 1982-12-19 Mark Whitby Runkorakennetta koskeva parannus.
GB2145054B (en) * 1983-08-12 1986-12-31 Mabey Bridge Company Limited A method of lifting a bridge end, and a jacking frame therefor
JPH0757972B2 (ja) * 1988-05-26 1995-06-21 清水建設株式会社 トラス構造
US5159790A (en) * 1989-04-07 1992-11-03 Harding Lewis R Frame structure
CN108190053B (zh) * 2018-02-09 2024-05-24 哈工大鞍山工业技术研究院有限公司 一种三角形桁架挠性附件模拟器及其设计方法
CN117627386B (zh) * 2024-01-25 2024-04-09 北京建工集团有限责任公司 一种索幕墙桁架及其施工方法

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Cited By (14)

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US4259825A (en) * 1979-02-23 1981-04-07 Nasa Foldable beam
US4682460A (en) * 1986-04-16 1987-07-28 Trus Joist Corporation Open web structural support mounting bracket and length adjustable web member
US4745724A (en) * 1986-04-16 1988-05-24 Trus Joist Corporation Open web structural support member of adjustable length with incremental adjustment of end web member
US4821480A (en) * 1988-06-01 1989-04-18 Butler Manufacturing Company Adjustable sidewall connection for roof panel support joists
US8458839B2 (en) 2009-07-27 2013-06-11 Encon Technologies, Llc Apparatus and method for replacing a bridge using a pre-cast construction techniques
US20110016645A1 (en) * 2009-07-27 2011-01-27 Paul Westley Porter Apparatus and Method for Replacing a Bridge Using a Pre-Cast Construction Techniques
US20120011665A1 (en) * 2010-07-13 2012-01-19 Paul Westley Porter Bridge Shoring System
US8656543B2 (en) * 2010-07-13 2014-02-25 Encon Technologies, Llc Bridge shoring system
WO2017127947A1 (de) * 2016-01-27 2017-08-03 Nüssli (Switzerland) Ltd. Tragstruktur für einen mehrfach auf- und abbaubaren hallen-, bühnen-, tribünen- oder brückenbau
CN107653781A (zh) * 2017-09-20 2018-02-02 龙元建设集团股份有限公司 用于盖梁现浇施工的大钢管桁架及施工方法
US20190194945A1 (en) * 2017-11-20 2019-06-27 Jessica Manness Engineering Inc. Auxiliary Stiffener and Customization of Prefabricated Trusses Using Same
US10753094B2 (en) * 2017-11-20 2020-08-25 Jessica Manness Engineering Inc. Auxiliary stiffener and customization of prefabricated trusses using same
CN113668408A (zh) * 2021-08-24 2021-11-19 中铁工程设计咨询集团有限公司 一种自落梁转体球铰
CN113668408B (zh) * 2021-08-24 2022-12-23 中铁工程设计咨询集团有限公司 一种自落梁转体球铰

Also Published As

Publication number Publication date
AT238756B (de) 1965-02-25
FR1320609A (fr) 1963-03-08
CH395163A (de) 1965-07-15
DE1434341A1 (de) 1968-11-28
GB1006667A (en) 1965-10-06

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