JP3188499B2 - Roof structure and construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof structure of a large building such as an indoor stadium and a construction method thereof.

[0002]

2. Description of the Related Art Conventionally, as a roof structure of a large building,
For example, in a sports indoor stadium, a trussed frame is horizontally laid on the top of a mortar-shaped wall structure. The truss structure is used. The roof structure for horizontally laying the truss is constructed by erecting a gantry at the erection position between the wall structures where the truss is to be erected, and sequentially lifting and supplying the constituent members of the truss with a hoist. A truss is formed and constructed between the wall structure and the gantry. The roof structure for erection of the mountain-shaped truss viewed from the side is to construct a support structure that reaches the truss construction position by assembling support materials from the floor of the building on which the roof is to be constructed, and using this support structure. Assemble and construct the truss components lifted by the hoist.

[0003]

However, in the case of the above-mentioned roof structure and its construction method, the following problems have occurred. In other words, the roof structure on which the truss is installed horizontally has large components, especially since it is necessary to support the bending force due to its own weight acting on the center of the truss, and the lifting machine that supplies the components is also large. There was a problem that it was necessary to use the method and the construction was difficult.

On the other hand, a roof structure in which a mountain-shaped truss is installed in a side view can be constructed entirely with smaller components than those in which the truss is installed horizontally, since the load at the center is supported by the axial force of the truss. Although it is possible, the number of components increases and the work efficiency of construction is dissatisfied.In addition, the rigid structure truss like the former roof structure can not be partially installed and the support structure is Since it is necessary to construct, there is a problem that it takes time to construct the support structure and the construction period is extended.

[0005] In any of the roof structures, the components of each truss are assembled mainly at the construction position and work at high places is often performed. Therefore, the work is relatively dangerous, and measures such as drop prevention are taken. It was serious and caused an increase in construction costs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a roof structure and a method for constructing the roof structure, which are simple in construction, require a small number of assembling steps, reduce work at heights in construction, and improve work safety. It is intended to provide.

[0007]

Means for Solving the Problems Claim 1 of the present invention
The roof structure described is used for large buildings such as indoor stadiums.
A generally bow-shaped beam structure having a root structure and forming an outer shape of a roof
The center of the roof surrounded by the structure and the beam structure
Top structure and traction machine located below the top structure
And between the traction mechanism and an outer end of the beam structure.
Traction cable, said traction cable and said beam structure
To maintain a predetermined distance between them.
And the beam structure is rigidly formed.
With a plurality of beams, and these beams are vertically
And are configured to be rotatable
The outermost beam is positioned up and down with respect to the base of the roof.
And the top structure is rotatably mounted in the
The beam that is connected to the top structure rotates vertically with respect to the top structure
And the traction cable is attached to the traction machine.
The traction mechanism and the beam structure by being pulled by a truss
The above-mentioned problem is solved by being stretched between
Means. In the construction method of the roof structure according to claim 2,
The construction method of a roof structure according to claim 1, wherein the beam structure is provided.
The outermost beam at the top and bottom of the roof
Pivotally mounted in a different direction, and another beam on the top structure
The beam structure is attached to the
Stand, then 牽 the traction cable by said traction mechanism
To bend between the beam bodies,
The distance between them is adjusted to a predetermined distance,
A predetermined distance between the traction cable and the beam structure
Exerting tension on the traction cable to retain it
Is a means for solving the above problem. The roof structure according to claim 3.
In the construction method of the above, the construction method of the roof structure according to claim 2
First, assembling the beam structure and the top structure to this beam structure
The assembling of the structure and the traction mechanism is performed in the vicinity of the ground portion as a means for solving the above problem.

[0008]

According to the roof structure of the first aspect, the beam structure is
It is composed of multiple beams, and these beams are vertically
To the beam structure and the roof base.
Between the ends and between the beam structure and the top structure
Can be turned up and down in the vertical direction.
In the state where the tension by the traction cable is not acting,
The beam structure extends from the base end side of the roof to the top structure side.
Can be bent at multiple points. Therefore, this
Possible state without tension from the cable
Due to the high degree of freedom of force, for example, the top structure
The top structure is not down
Construct the roof structure in a lowered state, and then
To pull the towing cable to exert tension
By bending the bendable part,
It is possible to construct the roof structure in a proper posture. Ma
In addition, because it has a structure with a traction mechanism,
This pulling mechanism pulls the towing cable and generates tension.
After being stripped, leave it in place without removing it.
It becomes possible.

According to the construction method for a roof structure according to claim 2,
For example, the outermost beam body of the beam structure
To be rotatable up and down, and another beam
Beam attached to the top structure so that it can rotate vertically
Since the structure is assembled, in this state, for example, the top structure
The top structure, not the normal posture where the object was lifted up
Is hanged down. Therefore,
In this construction, the land where the roof structure is
Work near the ground, not at a position sufficiently higher than the top
It becomes possible. And, from this state, the towing machine
Pull the towing cable by the structure and bend between the beam bodies
Adjust the distance between the base of the roof and the top structure to the specified distance
And the traction cable and the
The traction cable is maintained at a predetermined distance from the beam structure.
The top structure to hold it upwards.
It is now possible to construct a roof structure with a raised normal posture
Become. According to the construction method of the roof structure according to claim 3, the beam
Assembling the structure and the top structure to this beam structure and
Assemble the traction mechanism near the ground.
When installing at a position sufficiently higher than the ground part,
In comparison, supply of materials required for assembly and movement of workers
It becomes possible to make it easier.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. Reference numeral 1 in the figure denotes a roof structure of an indoor stadium to which the roof structure and the construction method according to the present embodiment are applied. As shown in FIGS. 1 to 3, the roof structure 1
Is a size obtained by equally dividing the whole of a plan view into 36 equal parts, and is formed in a dome shape by connecting a roof structure of a roughly bow-shaped side view radially from the center.

As shown in FIG. 1, a roof structure constituting a roof structure 1 includes a beam structure 2, a traction cable 3 stretched between both ends of the beam structure 2, and a beam structure. 2 and an intervening member 4 interposed between the traction cable 3 and a target distance between the two. In the center of the roof structure 1 in plan view, a traction mechanism for constructing the roof structure 1 by forming the respective roof structures by pulling the respective traction cables 3 of the opposing roof structures in the opposite direction. 5 are interposed. Further, at the position of the top of the roof structure that covers the traction mechanism 5, an end of each roof structure is abutted to form a top structure 6 that forms the roof structure 1 in a continuous dome shape.

As shown in FIGS. 2 and 3, the beam structure 2
Is mounted between a mounting portion 1b, which divides the main structure 1a into 36 equal parts, and a traction support member 5a of the traction mechanism 5 corresponding to the mounting portion 1b. The beam structure 2 has a first beam member 2a having a base end attached to a position of the base end of the roof structure 1, and a base end connected to a distal end of the first beam member 2a. A second beam member 2b and a third beam member 2c having a base end connected to a distal end of the second beam 2b
Are arranged in the same straight line in plan view , and these first
A pair of the beam member 2a, the second beam member 2b, and the third beam member 2c is provided between both ends of the mounting portion 1b and both ends of the traction support member 5a corresponding to both ends of the mounting portion 1b. It is constructed in a substantially trapezoidal shape with a narrower width as viewed from the top in plan view.

[0013] As shown in FIG. 4, the first beam member 2a is collected
It is attached to the roof structure 1 so as to be vertically rotatable via a first hinge 2d fixed to the attachment portion 1b . The second beam member 2b is vertically rotatably attached to the first beam member 2a via a second hinge 2e.
The third beam 2c is attached to the second beam 2b via a third hinge 2f so as to be rotatable up and down. Also,
The third beam member 2c is moved in the direction of the center of the roof structure 1 by contacting the side surface located on the center portion side of the roof structure portion 1 with the traction support member 5a of the traction mechanism 5 for pulling the traction cable 3. Is regulated, and the traction cable 3 is freely inserted at its tip end so as to be movable.

As shown in FIGS. 2 to 6, the first hinge 2d is attached to the head of a pole 2h erected at the attachment position of the first beam member 2a in the attachment portion 1b. The beam 2a is supported rotatably up and down.
As shown in FIG. 7, the second hinge 2 e is connected to the first beam 2 a so as not to interfere with the interposition member 4.
Are connected to each other so as to be vertically rotatable.

In the beam structure 2, a pair of opposing first beam members 2 a, 2 a is a connecting member 2 g connecting the two in the width direction of the beam structure 2 at positions that divide the length direction into four equal parts. They are fixed together. Further, the combination of the second beam members 2b, 2b and the third beam members 2c, 2c is similarly connected by the connecting member 2g to form an integrated structure.
And the beam structure 2 comprises these first beam members 2a, 2a,
Each set of the second beam members 2b, 2b and the third beam members 2c, 2c is connected so as to be vertically rotatable in the length direction.

The traction cable 3 has one end fixed to the base end of the first beam 2a and the third beam 2c at the center.
8 is movably inserted into the tip of the
As described above, the other end penetrates into the traction support member 5a and is introduced into the traction mechanism 5 so as to be tractable to the center hole jack 5b. Further, to the traction cable 3, the tip of an interposition member 4 rotatably attached to the tip of the first beam member 2a at the center is fixed.

The interposition member 4 is formed on the inner surface side of the beam structure 2 so as to protrude from a position connecting both ends of the beam structure 2 when the traction cable 3 is tensioned. By transmitting and supporting the load of the roof structure 1, the beam structure 2 is configured such that the second beam 2b protrudes upward at an appropriate height.

As shown in FIGS. 4, 8 and 9, the traction mechanism 5 includes the traction support member 5a and the center hole jack 5b, a cable fixing member 5c for restricting the return of the traction cable 3, and a traction cable 3. And a support ring 5d for supporting the traction force accompanying the tension of the support ring 5d. As shown in FIGS. 4 and 8, the traction support member 5 a is attached to the roof structure 1.
Is a ring-shaped structure formed at the center of the beam structure 2 and supports the load applied from the front end of each of the beam structures 2 abutting on the outer surface.

As shown in FIGS. 8 and 9, the center hole jack 5b comprises a center hole jack main body 5e for pulling the towing cable 3, and an equalizer 5f for guiding the towing cable 3 to the center hole jack main body 5e. ing. Center hole jack body 5e
Is a cylindrical device that operates with hydraulic pressure or the like to exert a strong traction force, and is mounted on a jack receiving member 5g constructed at the center of the roof structure 1. The jack receiving member 5g is configured to be able to protect the center hole jack 5b when the traction mechanism 5 falls from the top of the roof structure 1. The equalizer 5f is a member attached to a front portion of the center hole jack main body 5e, and is in contact with a side surface of the support ring 5d to be connected to the traction cable 3.
It is designed to take traction reaction force when nervous.

As shown in FIGS. 8 and 9, the cable fixing metal 5c includes a fixing jig 5h attached to the end of the pulling cable 3 opposite to the end attached to the first beam 2a. , A tension member 5i inserted into and pulled into the center hole jack body 5e, a fixing jig 5h and a tension member 5
and a connection fitting 5j for connecting i. The fixing jig 5h is attached to an end protruding from the inner surface of the support ring 5d of the traction cable 3 at an appropriate position where acceleration due to rapid return to traction can be restricted.

The tension member 5i is a rod-shaped member having an uneven surface formed on the surface thereof.
e to transmit the traction force in a step-up manner to draw the traction cable 3 into the center of the roof structure 1. The connection fitting 5j connects the fixing jig 5h and the tension member 5i with a wire or the like attached between them, and transmits the traction force of the tension member 5i to the traction cable 3.

As shown in FIG. 8, the support ring 5d is a structure formed in a ring shape in a plan view, and the end surface of each equalizer 5f is brought into contact with the inner surface, so that the traction cable 3d is formed.
In the case of tension, it supports a pulling force acting to expand the whole outward.

A top structure 6 forming the top of the roof structure 1 is attached to the upper part of the traction mechanism 5. As shown in FIGS. 1 and 3, the top structure 6 is a third structure.
A pillar 6a rotatably attached to the lower end of the beam member 2c and standing substantially vertically; a ring-shaped top ring 6b formed to connect the tops of the pillars 6a; A number of extension wires 6d, which are attached to the center of the ring 6b and cover the top of the roof structure 1 and have a circular top plate 6c in plan view, are formed to have the same length between the top ring 6b and the top plate 6c. And the top ring 6b and the top plate 6c are concentrically fixed.

As described above, the roof structure 1 is composed of the top structure 6 and the roof structure constructed around the top structure 6, and the first and second beam members 2a, 2b, etc. are connected to the top plate 6c. The roof of the roof structure formed by this is connected and comprised. Also. As described above, the beam structure 2 is divided into the first, second,
These are constituted by third beam members 2a, 2b, 2c and the like.
The beam members are connected so that they can rotate vertically.
Between the beam structure 2 and the base end of the roof;
The structure 2 and the top structure 6 are shared between the structures 2 and the pillars a.
The tow cable can be turned up and down
In the state before the extension by 3 is performed, the beam structure
2 is from the base end side of the roof to the top structure 6 side.
It can be folded at several points.

The construction of the roof structure 1 according to the construction method of the roof structure of the present embodiment will be described below. As shown in FIGS. 10 and 11, in order to construct the roof structure 1, first, the main structure 1a, the mounting portion 1b, the pole 2h, the ring body 2i, the traction support member 5a, and the support ring 5d are preceded. After the configuration, the first hinge 2d is attached to the outside of the pole 2h. Then, the base end portion of the first beam member 2a is attached to the attachment portion 1b via the first hinge 2d. Hereinafter, the first beam member 2a is supplied while supplying members from the main structure 1a and the floor 1c. A second beam 2b, a third beam 2c,
The connecting member 2g is attached in the above-described manner to assemble the roof structure. Similarly, the traction mechanism 5 and the top structure 6 are assembled between the roof structures.

At this time, each roof structure has a third beam 2c,
It is assembled as a position where the tip of 2c is almost in contact with the floor 1c. That is, as described above, the beam structure 2 is
Bend at multiple points from the root end side to the top structure 6 side
Since it is possible, the top structure 6 hangs down
The roof structure can be constructed in the lowered state,
This construction can be performed near the ground.
You. The traction cable 3 is stretched so as to connect both ends of the general beam structure 2.

When the assembly of each roof structure is completed, the end of the towing cable 3 is movably penetrated into the cable insertion hole 5k formed in the thickness direction at the side of the towing support member 5a. Then, it penetrates into the cable insertion hole 5k formed in the thickness direction in the support ring 5d in the same manner. At the end protruding from the inner surface of the support ring 5d of the towing cable 3, the fixing jig 5h is attached at an appropriate position of the initial tension, and is fitted into the center hole jack main body 5e in advance through the connecting metal fitting 5j to tow. Attach the tension member 5i that has been enabled.

When the above preparations are completed, the center hole jack main body 5e is operated to put the tendon 5i on the roof structure 1.
By pulling in the direction of the center, a pulling force is applied to the pulling cable 3 to tension the pulling cable 3. The traction cable 3 is pulled at substantially the same speed in all the center hole jacks 5b. As a result of towing the towing cable 3, the first hinges 2d, 2d of each opposing roof structure
The length of the traction cable 3 stretched between them gradually decreases, and each beam structure 2 rotates upward about the first hinge 2d.

As shown in FIGS. 12 and 13, as a result of the rotation, all the roof structures facing each other are pulled together to shorten the length of the traction cable 3, and all the roof structures and the traction mechanism 5 are moved. It gradually rises upward. Also,
The distance between the support 6a and the second beam 2b gradually decreases,
Rises so that the beam member 2c substantially coincides with the column 6a, and then comes into complete contact. At this time, in the beam structure 2, the interposition member 4 pushes up the vicinity of the front end of the first beam member 2a upward due to the balance between the tension of the traction cable 3 and its own weight, and the direction of the center of the roof structure 1 is generally high. Form a gentle slope. When the support 6a and the third beam 2c match, the second beam 2b
The end on the roof structure 1 side is attached to the top ring 6b.
In addition, about the 3rd beam material 2c, this
You may remove it.

In order to prevent a fall due to an accident or the like, a gantry formed at a height suitable for support in accordance with each altitude is installed below the floating roof structure. Then, all the roof structures attached to the periphery of the traction support member 5a and the upper surface of the top structure 6 coincide with each other by the levitation by the traction, so that the roof structures formed by the beam structures 2 are continuously integrated. Of the roof structure 1. When the outer shape of the roof structure 1 is completed, the towing cable 3 is fixed to the towing support member 5a, and the center hole jack 5b and the jack receiving member 5g are disassembled and removed to finish the roof structure 1.

According to the roof structure and the construction method of the present embodiment, the roof structure has a simple structure and a small number of constituent members.
The weight of the roof structure is reduced, so that the workability of the roof structure is improved and the work efficiency of the roof construction is improved. In addition, materials can be saved and the construction cost can be reduced. In the roof structure of the present embodiment, the beam structure 4 becomes a target shape by tensioning the traction cable 3 between both ends of the beam structure 2, and reduces the weight of the beam structure and the supporting force of the load applied from the roof. Since it is easy to express, the tip of the beam structure 2 is set to the floor 1c of the building.
It is possible to assemble it from the ground by mounting it on the ground, and to assemble the roof structure safely and easily to further improve the work efficiency.

The beam structure 2 may be composed of two or more beam members. Further, in this case, the interposition member 4 to be interposed between the beam member and the traction cable 3 is attached to at least all of the remaining beam members that are two less than the number of the beam members.

[0033]

As described above, the roof structure of the present invention
Has the following excellent effects. (A) The beam structure is composed of a plurality of beams, and
Are rotatably connected to each other in the vertical direction,
Between the structure and the base of the roof, and the beam structure and the top
The structure can be turned up and down together.
The tension caused by the traction cable during the construction
When not in place, the beam structure is
It is possible to bend at a plurality of points toward the top structure side. But
The tension is not applied by the pull cable.
Because the posture has a high degree of freedom in the posture,
The upper part is not in the normal posture where the substructure has been lifted up.
Install the roof structure with the structure hanging down,
After that, the towing cable is pulled by the towing mechanism and tension is applied.
The above-mentioned bendable part is bent by
Construction on the roof structure in the proper posture
Can be. Therefore, especially when the top structure hangs down
Because the roof structure can be constructed
Construction can be performed near the ground, and
Assembly compared to the case where it is installed at a position sufficiently higher than the part
Supply of necessary materials and movement of workers are facilitated.
Work efficiency and further safety.
You. (B) Is the structure equipped with a traction mechanism?
The towing cable is pulled by this
After showing it, leave it without removing it
And therefore work more efficiently
Can be Construction of the roof structure according to claim 2
The method has the following excellent effects. (C) The outermost beam of the beam structure is located at the base end of the roof.
To be vertically rotatable with respect to
Is attached to the top structure so that it can rotate vertically.
Since the beam structure is assembled, in this state, for example, the top structure
Creature is not normal posture rose has the upper, top structure
It is constructed with the object hanging down. Accordingly
In this construction, the proper position of the roof structure
Work close to the ground, not at a position sufficiently higher than the ground
It can be performed. And, from this state, the towing machine
Pull the towing cable by the structure and bend between the beam bodies
Adjust the distance between the base of the roof and the top structure to the specified distance
And the traction cable and the
The traction cable is maintained at a predetermined distance from the beam structure.
The top structure to hold it upwards.
The roof structure can be constructed in the upright posture.
You. Therefore, especially when the top structure hangs down
By constructing the roof structure at
Can be done by the side, and therefore much higher than above the ground
Supply of materials required for assembly
Easier feeding and worker movement, resulting in higher work efficiency
And further safety can be achieved. Claim 3
The construction method of the roof structure has the following excellent effects. (D) Assembly of beam structure and top structure to this beam structure
Assemble the object and the traction mechanism near the ground.
, Construction can be performed at a position sufficiently higher than the ground.
Supply of materials required for assembly and
Easy to move and therefore more efficient
The safety can be further improved.

Further, the roof structure of the present invention and the roof structure
Construction method is simple and the number of components is small.
Less man-hours in assembly and weight
The work efficiency of roof construction is reduced due to the decrease
Not only improve materials, but also save material and reduce construction costs.
Can be.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing one embodiment of the present invention.

FIG. 2 is the enlarged side view.

FIG. 3 is the enlarged plan view.

FIG. 4 is an enlarged side view of the roof structure.

FIG. 5 is an enlarged plan view showing the vicinity of the first hinge.

FIG. 6 is an enlarged side view showing the vicinity of the first hinge.

FIG. 7 is an enlarged front view showing the vicinity of the second hinge.

FIG. 8 is an enlarged plan view showing the traction mechanism.

FIG. 9 is an enlarged side view showing the traction mechanism.

FIG. 10 is a side view showing the assembly of the roof structure.

FIG. 11 is a plan view showing the assembly of the roof structure.

FIG. 12 is a side view showing floating of the roof structure.

FIG. 13 is a plan view showing floating of the roof structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Roof structure 1b Attachment part 2 Beam structure 2a 1st beam material 2b 2nd beam material 2c 3rd beam material 3 Traction cable 4 Interposition member 5 Traction mechanism 6 Top structure

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akira Taga 3-13 M-404, Odashimachi, Tokorozawa-shi, Saitama (72) Inventor Ikuo Tatemichi 3-27-22, Shimizu, Suginami-ku, Tokyo (56) References JP Hei 1-137035 (JP, A) JP-A-60-226944 (JP, A) Japanese Utility Model Application No. 3-84320 (JP, U) Japanese Utility Model Application Utility Model No. 3-58507 (JP, U) (58) Field surveyed (Int) .Cl. ⁷ , DB name) E04B 1/34 E04B 1/32 102 E04B 7/14

Claims (3)

(57) [Claims] 1. A roof structure of a large building such as an indoor stadium, comprising a roughly bow-shaped beam structure forming an outer shape of the roof, and the beam structure.
A top structure that is surrounded by objects and forms a central portion of the roof;
A traction mechanism disposed below the top structure, and the traction mechanism;
Traction cable provided between the beam structure and the outer end of the beam structure
Between the traction cable and the beam structure
And an intervening member that holds a predetermined distance between them.
Becomes, the beam structure comprises a plurality of beam members formed rigidly,
So that these beams can rotate up and down with respect to each other.
The outermost beam that is connected and configured
Is rotatable vertically with respect to the base end of the roof
And a beam connected to the top structure is provided on the top structure.
The traction cable is attached so as to be rotatable vertically with respect to the structure, and the traction cable is pulled by the traction mechanism.
Therefore, it is stretched between the traction mechanism and the outer end of the beam structure.
A roof structure characterized by being made . 2. The method for constructing a roof structure according to claim 1, wherein the outermost beam body of the beam structure is moved relative to a base end of the roof.
To be rotatable up and down, and another beam at the top
Beam structure attached to the structure so that it can rotate vertically
Assembling the body and then pulling the traction cable by said traction mechanism,
The distance between the base of the roof and the top structure is bent by bending the beams.
The separation is adjusted to a predetermined distance, and the
Maintaining a predetermined distance between the traction cable and the beam structure
A method of constructing a roof structure, characterized in that the pulling cable exerts tension as described above. 3. The method for constructing a roof structure according to claim 2, wherein
The assembly of the beam structure and the top structure to this beam structure
A method of constructing a roof structure, comprising: assembling an object and a traction mechanism near the ground .