JPH0443548B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tension membrane structure that allows deformation of a roof membrane to be absorbed at the hanging points of the membrane.

(Conventional technology) Recently, as a tension (suspension) membrane structure,
A roof membrane suspended below a steel frame has been proposed. The construction of this tension membrane structure is
First, a steel frame is erected, then wires are passed through the steel frame, and then the roof membrane, which has been assembled in advance on the ground, is pulled up with wires, and finally, the hanging points between the steel frame and the membrane body are fixed.

(Problems to be Solved by the Invention) This type of tension membrane structure tends to result in a heavy building as a whole due to the construction of the frame, and although a certain amount of tension is introduced into the roof membrane, the membrane may be damaged due to strong winds, etc. Temporary deformation of the body is inevitable, and if the stress associated with this deformation is applied to the frame, it is necessary to make the frame stronger or reinforced to cope with this. This will add even more weight. However, this would be economically disadvantageous since the amount of steel would increase accordingly.

An object of the present invention is to be able to cope with deformation of a roof membrane and to reduce its weight.

(Means for Solving the Problems) The present invention comprises a frame 1, a hanging bolt 3 whose upper end is supported by the frame, and a roof membrane 2 which is attached to the hanging bolt so as to be movable up and down and supports the roof membrane 2. The membrane support section 37 is provided with a membrane support section 37.

The above hanging bolts are upper bolt 31 and lower bolt 3.
2, the upper end of the upper bolt is supported by the frame 1, and the lower end of the lower bolt supports the membrane support part 37. An upper ring 35 is formed at the lower end of the upper bolt 35, and a lower ring 36 is formed at the upper end of the lower bolt 36. The upper and lower rings 35, 36 are interconnected. The membrane support section 37 includes a support pipe 371 and a support frame 372 extending radially from the support pipe in the horizontal direction.
and the mounting plate 373 attached to the support frame.
and a nut 375 located below the support pipe and holding the position of the support pipe,
The support pipe is loosely fitted to the lower bolt so as to be movable up and down, the nut is screwed to the lower bolt, and the mounting plate supports the end of the roof membrane 2.

(Function) Even if the roof membrane 2 is deformed, the ring located below the hanging bolt 3 swings around the upper ring, and the support pipe 371 of the support section 37 moves up and down, thereby causing the roof to deform. Absorbs membrane deformation.

(Example) Examples of the present invention will be described below.

As shown in Figures 6 to 8, the roof of the building is a tension membrane in which a roof membrane 2 is suspended from a frame 1 assembled in a three-dimensional truss shape using suspension members 3, and the membrane periphery is continuously fixed with boundary beams. It has a structure that combines a frame. The upper surface of the membrane is held down by a holding cable 4. In addition, 4a
is a brace.

The frame 1 is made of steel pipes as shown in FIGS. 1 and 2, and joints 5 are used at eight intersections of the frame (FIG. 8), and a hanging bolt 3 is suspended from each joint.

The joint 5 is composed of a steel ball, and the end portion 11 of each frame 1 is mechanically joined to this joint from a predetermined direction.

Here, a method of joining the joint 5 and the frame 1 at the intersection A (FIG. 8), for example, will be explained with reference to FIGS. 1 and 2. The joint 5 is formed with a number of joint screw holes 51 corresponding to the number of frames 1 to be joined, five in this example. A connecting threaded rod 6 which is threadedly connected to the end portion 11 of each frame 1 is screwed into each joint threaded hole. A watzpere 7 for rotating the connecting threaded rods is attached to the intermediate position of each of the connecting threaded rods, and a driving pin 72 is located in a long groove 71 provided in the watzpere. By turning the Watsupa 7, the connecting threaded rod 6
moves back and forth, thereby joining the joint 5 and the end portion 11 of each frame 1.

As shown in FIG. 1, the hanging bolt 3 is composed of two members, an upper bolt 31 and a lower bolt 32, and is provided with a relief part 33 in the middle part. The upper end of the upper bolt 31 passes through the joint 5 and projects upward, and the projecting end is fixed with a nut 34. As shown in FIGS. 1 and 3, a ring 35 is formed at the lower end of the upper bolt 31, and this ring is interconnected with a ring 36 formed at the upper end of the lower bolt 32. It constitutes a relief part 33 for the hanging bolt. The lower ring 36 has a vertically elongated oval shape, and a portion of one of its long sides forms a movable part 361 which is a detachable part, and this movable part is equipped with a carabiner mechanism. This movable part is attached to be swingable about a pin 362, and an engaging part 363 at the upper end of the movable part engages with a locking part 364 by the force of a spring (not shown).
The engaged state of the engaging portion 363 and the locking portion 364 is fixed by a nut 365. In order to remove the lower ring 36 from the upper ring 35, move the nut 365 downwards and separate the engaging part 363 of the movable part and the locking part 3.
64, the movable part 361 is swung counterclockwise against the spring force around the pin 362 as shown by the chain line in FIG. A gap is created between the part and the locking part, and the upper ring 35 is pulled out from this gap.

The lower ring 36 may be, for example, as shown in FIG. That is, this main body is composed of a pair of U-shaped ring parts 36a and 36b,
Connect one end of both ring parts with a connecting pipe 36c,
Threaded portions 36a1 and 36 provided at the other end, respectively
b1 are connected by a threaded sleeve 36d. In this example, in order to remove the lower ring 36 from the upper ring 35, the threaded sleeve 36d is sent upward and the threaded portions 36a1, 36 at the other end are removed.
After uncoupling b1, for example, connect the upper ring part 36a to the connecting pipe 36 as shown in the chain line in FIG.
Rotate around c and leave a gap between the other ends.

A membrane support portion 37 is attached to the lower part of the lower bolt 32, as shown in FIGS. 1 and 5. This membrane support part has a support pipe 371 located in the center, and four support frames 372, . Specifically, a ring-shaped mounting plate 373 is provided. Support pipe 37
1 is a disk-shaped support plate 3 that loosely fits into the lower bolt 32 and movably attaches the lower end of the pipe to this bolt.
74, and this support plate is held in position by a double nut 375. Each support frame 372 is supported by a support pipe 371 in a cantilever manner, and is reinforced with a reinforcing frame 376. In addition, the mounting plate 373 has
One end of the roof membrane 2 is joined by a holding plate 8 and a bolt 8a. One end of the peak cable 4b is attached to the attachment plate 373.

Therefore, the membrane support part 37 is simply placed on the support plate 374 and is always movable upward along the lower bolt 32.

Note that the outside of the membrane support section 37 is covered with a decorative cover 9 as shown in FIG.

Next, construction will be explained.

The upper bolt 31 is removed from the lower bolt 32 of the hanging bolt 3 in advance, the upper bolt is attached to the joint 5, and the membrane support part 37 is attached to the lower bolt.
First, after assembling the frame 1 using the joint 5, one end of the roof membrane 2 is attached to the mounting plate 373 at the lower end of the hanging bolt as shown in FIG.
2 and the roof membrane is lifted up to a certain extent, then stopped, and then the periphery of the other end of the membrane is attached to the fixed plate 10a of the beam 10, and then lifted again, and the ring 35 of the upper bolt 31 suspended from each joint is , lower ring 3 as shown in dotted line.
6 is latched, the holding cable 4 is attached to the roof membrane, and finally the support frame 372 is pushed upward with a jack, the support part 37 is raised along the lower bolt 32, and tension is introduced into the roof membrane. , further turn the nut 375 to finely adjust the tension.
As a result, the roof membrane 2 maintains a stable shape due to the balance between the upward tension and the downward tension of the holding cable 4, as shown in FIG.

To explain the operation, when the roof membrane 2 is deformed by strong winds while it is stretched, the membrane support part 37 moves up and down or left and right. In response to the vertical movement, only the support pipe 371 of the membrane support section moves up and down along the lower bolt 32 to absorb the deformation of the membrane. At this time, since the entire hanging bolt 3 remains stationary, the frame 1 is not affected by the deformation of the membrane 2 at all. In addition, for movement in the left and right direction, the lower bolt 32 of the hanging bolt 3 is
It swings like a pendulum around point 5 and absorbs the movement of the membrane. Therefore, in this case as well, the deformation of the membrane 2 is absorbed by the relief portion 33, and the deformation is not transmitted to the frame 1 via the upper bolt 31.

Since the relief part is composed of the upper and lower rings 35 and 36, the structure is simple and the deformation of the roof membrane can be reliably absorbed by the relief part. Furthermore, if the ring is made removable, the hanging bolts 3 can be hung on the frame after the frame is assembled, which simplifies construction, and the removal can also be done from below the frame, simplifying the work. Of course,
The ring is not limited to being removable.

The joint is not limited to the above example, for example, the first
The joint 5a shown in Figures 0 and 11 is a sphere made by joining hollow hemispheres to each other, a reinforcing plate 5a1 is disposed inside, and a mounting hole 51a is provided into which the end 11 of the frame 1 is inserted. It may be hot. To join the frame 1, the end of the frame is inserted into this mounting hole and the end is fixed by welding.

According to the above example, the membrane support part 37 is attached to the lower bolt 32
Since it is movably attached to the roof membrane, it can absorb the vertical movement of the roof membrane, and after assembling the frame and setting the hanging bolts, tension can be introduced from below to the membrane, making it easy to introduce tension. becomes.

(Effects of the Invention) According to the present invention, the suspension bolt of the roof membrane consisting of the upper bolt and the lower bolt is provided with a ring of upper and lower bolts that are interconnected, and the support pipe of the membrane support part is connected to the lower bolt. Since it is loosely fitted in the frame so that it can move up and down, even if the roof membrane deforms, it will not affect the frame in any way, and there is no need to provide reinforcing means to take into account the deformation of the membrane, which simplifies the construction. , the amount of materials used can be reduced, the weight of the building can be reduced, it is economically advantageous, and it can be easily applied to large-scale tensile membrane structures.

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view of the main part, Fig. 2 is a partially sectional plan view showing how the frame is attached to the joint, Fig. 3 is an enlarged side view of the relief part, and Fig. 4 is an enlarged side view of the relief part. An enlarged side view showing another example, FIG.
Figure-line sectional view, Figure 6 is a front view of a building to which the tension membrane structure is applied, Figure 7 is a left side view of Figure 6, Figure 8 is a plan view of Figure 6, and Figure 9 is a construction diagram. FIG. 10 is a front view showing another example of the joint in use, and FIG. 11 is a plan view of FIG. 10. 1...Frame, 2...Roof membrane, 3...Hanging bolt, 31...Upper bolt, 32...Lower bolt, 3
3... Relief part, 35, 36... Upper and lower bolt rings, 361... Movable part, 37... Membrane support part, 3
71...Support pipe, 372...Support frame, 373
...Mounting plate, 375...nut.

Claims (1)

[Scope of Claims] 1. A frame, a hanging bolt consisting of an upper bolt having a ring formed at its lower end and a lower bolt having a ring formed at its upper end, and a membrane support part, The upper end of the upper bolt is supported by the frame, and the lower end side of the lower bolt supports the membrane support part, the rings of the upper and lower bolts are interconnected, and the membrane support part is It includes a support pipe, a support frame extending radially in the horizontal direction from the support pipe, a mounting plate attached to the support frame, and a nut located below the support pipe and holding the position of the support pipe. , the support pipe is loosely fitted onto the lower bolt so as to be movable up and down, the nut is threadedly connected to the lower bolt, and the mounting plate supports an end of the roof membrane. structure. 2 For the rings of the upper and lower bolts, one ring is
The tension membrane structure according to claim 1, further comprising a detachable portion that can be detached from the other ring.