JPH05179707A - Truss manufacturing method and dome construction method using truss - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to a method of manufacturing an arch truss and a method of constructing a dome using the same, which enables safe and easy installation work, and can reduce manufacturing cost and work time. An object of the present invention is to provide a method for manufacturing a truss and, in addition, a method for constructing a dome that can easily construct a dome with a high effective ceiling height. [Structure] A truss 16 having an upper chord member 10, a lower chord member 12 at least a part of which can be shortened, and a lattice member 14 is assembled, and columns 18 and 18 are laid down and placed.
The upper ends of the columns are joined to the ends of the truss 16 by pins, the truss 16 is lifted upward by the hoist 22, and the lower ends of the columns 18 are moved inward to build up both columns 18, 18, The lower end of each of the columns is supported on the foundation, the upper ends of the columns 18 and the truss 16 are fixed, the lower chord member 12 is shortened, the truss 16 is curved in an arc shape, and the central portion is pushed upward, thereby arching. Forming a truss.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an arch-shaped truss and a method of constructing a dome using the arch-shaped truss.

This type of construction method is adopted when constructing a sports facility, a leisure facility, an event facility, a terminal building or the like with a dome-shaped structure.

[0003]

2. Description of the Related Art In recent years, a dome-shaped structure is a typical example of a facility that provides a large space for performing various events, sports, etc., whose number has increased significantly.

When constructing this structure, there are (a) a method of assembling with a space truss, (b) a method of forming with an air film, (c) a method of constructing with an RC structure shell.

However, the construction method (a) requires a large amount of temporary materials such as scaffolds, and since there is a lot of work in high places, there is a high risk of falling accidents.

Further, in the above method (b), since it is necessary to constantly send air into the interior after the construction to expand the air film, it is difficult to maintain and the inside of the room is liable to dry, so that dust is not generated. Easy to dance.

In addition, since the concrete is used in the method (c), the weight is increased and the proportion of the foundation work is increased, which increases the construction cost. In addition, it is necessary to attach a formwork and shoring for placing concrete.
Economic efficiency is poor because the construction period is prolonged.

In view of the above circumstances, Japanese Patent Laid-Open No. 62-
As shown in Japanese Patent No. 220636, a plurality of trusses composed of shortenable lower chord members are laterally arranged at regular intervals, and the lower chord members of each truss are shortened to bend the truss into an arch shape and build up in an arch shape. A construction method has been proposed. According to this construction method, it is possible to reduce the construction cost and shorten the construction period.

[0009]

However, in the above construction method, since the columns are rigidly joined to both ends of the truss, it is difficult to keep the height of the truss at the time of ground assembly below a certain level. It is necessary to perform installation work, installation work of beam and brace between trusses, roof material, etc. at a high place.

Therefore, it takes time and labor to transport the material, which not only causes high cost and a long construction period, but also
It is difficult to ensure work safety. Therefore, it was not suitable for constructing a structure with a high effective ceiling height.

The present invention was devised in view of the above-mentioned conventional circumstances, and a first object of the present invention is to perform installation work safely and easily by reducing work at high places, thereby reducing manufacturing cost and work. It is to provide a method of manufacturing a truss that can reduce the time.

A second object of the present invention is to minimize the amount of temporary materials such as scaffolds and to reduce the work at high places, so that the work can be carried out safely and easily, resulting in a reduction in construction cost and a construction period. An object of the present invention is to provide a dome construction method capable of shortening and easily constructing a dome having a high effective ceiling height.

[0013]

In order to achieve the above object, a manufacturing method or a construction method according to the present invention is configured as follows.

In the manufacturing method according to the first aspect of the invention, first, the truss 16 having the upper chord member 10, the lower chord member 12, and the lattice member 14 is assembled in a factory or the like. At least a part of the lower chord member 12 constituting the truss 16 can be shortened by a predetermined length in the axial direction.

Next, the assembled truss 16 is placed at a predetermined position, and the columns 18 and 1 are placed in a lying state.
The upper end of 8 is pin-joined to both ends of the truss 16.

Thereafter, the truss 16 is lifted upward by the hoist 22 and the lower ends of the columns 18 are moved inward to build both columns 18, 18. Then, the lower ends of the columns 18 are supported on the foundation, and the upper ends of the columns 18 and the truss 16 are fixed.

Further, the lower chord member 12 is shortened and the truss 16 is
The arch-shaped truss is formed by curving the arch and pushing the central part upward.

In the manufacturing method according to the second invention, first, the truss 16 having the upper chord member 10, the lower chord member 12, and the lattice member 14 is assembled in a factory or the like.

At least a part of the lower chord member 12 constituting the truss 16 can be shortened by a predetermined length in the axial direction,
A tension cable 20 is slidably attached to the lower chord member 12.

Next, the assembled truss 16 is placed at a predetermined position, and the columns 18 and 1 are placed in a lying state.
The upper end of 8 is pin-joined to both ends of the truss 16.

After that, the truss 16 is lifted up by the hoist 22 and the lower ends of the columns 18 are moved inward to build up both columns 18, 18. Then, the lower ends of the columns 18 are supported on the foundation, and the upper ends of the columns 18 and the truss 16 are fixed.

Further, by tensioning the tension cable 20 and shortening the lower chord member 12, the truss 16 is curved in an arc shape and the central portion is pushed upward to form an arch-shaped truss.

In the manufacturing method according to the third invention, first, the truss 16 having the upper chord member 10, the lower chord member 12, and the lattice member 14 is assembled in a factory or the like.

At least a part of the lower chord member 12 constituting the truss 16 can be shortened by a predetermined length in the axial direction.

Next, the assembled truss 16 is placed at a predetermined position, and the columns 18 and 1 are placed in a lying state.
8 is pin-joined to both ends of the truss 16. Both struts 18,
The lower end of 18 is pin-supported.

Thereafter, the lower chord member 12 is shortened and the truss 16
Is curved in an arc shape and the central portion is pushed upward, both props 18 are rotated inward to build both props 18, 18, and at the same time, the prop 18 and the truss 16 are fixed to form an arch-shaped truss. Form.

In the manufacturing method according to the fourth aspect of the invention, first, the truss 16 having the upper chord member 10, the lower chord member 12 and the lattice member 14 is assembled in a factory or the like.

At least a part of the lower chord member 12 constituting the truss 16 can be shortened by a predetermined length in the axial direction,
A tension cable 20 is slidably attached to the lower chord member 12.

Next, the assembled truss 16 is placed at a predetermined position, and the columns 18 and 1 are placed in a lying state.
8 is pin-joined to both ends of the truss 16. Both struts 18,
The lower end of 18 is pin-supported.

Then, the tension cable 20 is tensioned to shorten the lower chord member 12, the truss 16 is curved in an arc shape, and the central portion is pushed upward. At that time, both columns 18 are rotated inward to build up both columns 18, 18,
The truss 16 is fixed to the truss 16 to form an arch-shaped truss.

In the dome construction method according to the fifth aspect of the invention, first, a plurality of trusses 16 each having the upper chord member 10, the lower chord member 12, and the lattice member 14 are assembled in a factory or the like.

At least a part of the lower chord member 12 constituting the truss 16 can be shortened by a predetermined length in the axial direction,
A tension cable 20 is slidably attached to the lower chord member 12.

Next, a plurality of these trusses 16 are arranged in parallel at predetermined positions, and the pillar 1 is arranged in a lying state.
The upper ends of 8 and 18 are pin-joined to both ends of each truss 16.

The space between the trusses 16 and 16 and the column 1
Attach a beam or roofing material between 8 and 18.

After that, each truss 16 is lifted up by a hoist 22, and the lower ends of the columns 18 joined to each truss 16 are moved inward to build both columns 18, 18. Further, the lower ends of the columns 18 are supported on the foundation, and the upper ends of the columns 18 and the truss 16 are fixed.

Finally, by tensioning the tension cable 20 to shorten the lower chord member 12, each truss 16 is curved in an arc shape and the central portion thereof is pushed upward to construct a substantially kamaboko-shaped dome.

In the dome construction method according to the sixth aspect of the invention, first, a plurality of trusses 16 each having an upper chord member 10, a lower chord member 12, and a lattice member 14 are assembled in a factory or the like.

At least a part of the lower chord member 12 constituting the truss 16 can be shortened by a predetermined length in the axial direction,
A tension cable 20 is slidably attached to the lower chord member 12.

Next, a plurality of these trusses 16 are arranged in parallel at predetermined positions, and the pillar 1 is arranged in a lying state.
Pins 8 and 18 are attached to both ends of each truss 16. The lower ends of both columns 18 are supported by pins.

The space between the trusses 16 and 16 and the column 1
Attach a beam or roofing material between 8 and 18.

Then, by tensioning the tension cable 20 to shorten the lower chord member 12, each truss 16 is curved in an arc shape and the central portion is pushed upward, and at the same time, both columns 18 and 18 are rotated inward. After building, each prop 1
An arch-shaped dome is constructed by fixing 8 and the truss 16.

[0042]

In the method of manufacturing a truss according to the present invention, the truss 1
The columns 18 are joined to each other by pins in a state where the columns 18 are laid down, and the assembly position thereof can be made extremely low as compared with the conventional construction method (see FIG. 4A) (FIG. 4B).
reference).

Further, in the construction method of the dome according to the present invention, since the work of mounting the girder / roofing material between the trusses 16 and 16 can be performed on the ground, temporary materials such as scaffolding can be minimized, Easy transportation of materials. Therefore, it is possible to safely and easily construct a dome having a high effective ceiling height.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a method for manufacturing a truss according to the present invention.

A truss 16 having an upper chord member 10, a lower chord member 12, and a lattice member 14 is supported by a plurality of hoists 22 as shown in FIG. The columns 18 arranged at are joined by pins.

The lower chord member 12 constituting the truss 16 can be shortened in the axial direction. That is, the lower chord material 12
2 and 3, as shown in FIGS. 2 and 3, is composed of an outer pipe 28 and an inner pipe 30, and one end of the inner pipe 30 is welded to one outer pipe 28.
The other end of the inner pipe 30 is slidably connected to the other outer pipe 28.

The space 1 between the outer tubes 28, 28 is opened as shown in the figure, and the inner tube 30 is exposed.

Further, inside the lower chord member 12, the tension cable 2 is provided.
0 is slidably inserted. One end of the tension cable 20 is fixed to one end of the truss 16 and the other end is supported by a hydraulic jack 32 provided on the other end of the truss 16. Alternatively, the hydraulic jacks 32 may be provided on both sides of the truss 16 to support the tension cable 20 from both sides.

After the installation work of the truss 16 and the pillar 18 is completed, as shown in FIG.
Can be lifted with. As a result, the lower ends of the columns 18 are moved inward to build up both columns 18, and the columns 18 and the truss 16 are fixed.

At this time, the lower end of one of the columns 18 is pin-joined to a base plate (not shown), and the lower end of the other column 18 is a guide rail 24 (FIG. 1) installed on the supporting ground.
(See (B)).

A base plate 26 is provided at the end of the guide rail 24, and the support column 18 movably supported by the guide rail 24 is pin-supported by the base plate 26 when the building work is completed.

After that, the tension cable 20 is tensioned by the operation of the hydraulic jack 32. Tension cable 20
Is pulled, the length of the lower chord member 12 constituting the truss 16 is shortened and the truss 16 is curved in an arc shape, which pushes the central portion upward as shown in FIG. -Shaped truss is formed.

As described above, according to this embodiment, the columns 18 are pin-joined to both ends of the truss 16 in a state of being laid down, which is different from the conventional construction method (see FIG. 4A). The assembly position can be extremely low (Fig. 4
(See (B)), so there is very little work in high places. Therefore, the installation work can be performed safely and easily, and the manufacturing cost and the working time can be shortened.

Next, FIG. 11 shows a second embodiment of the truss manufacturing method. In this embodiment, columns 18, 18 which are pin-joined to both ends of the truss 16 are pin-supported by the base plate 26, and these columns 18 are the first.
Contrary to the embodiment, they are arranged so as to be inclined outward.

The lower chord member 12 constituting the truss 16 can be shortened in the axial direction as shown in FIG. 3, and the tension cable 20 is slidably inserted into the lower chord member 12.

One end of the tension cable 20 is fixed to the end of the truss 16, and the other end is supported by a hydraulic jack 32 provided at the other end of the truss 16.

After the installation work of the truss 16 and the column 18 is completed, the tension cable 20 is tensioned to shorten the lower chord member 12, and the truss 16 is curved in an arc shape to push the central portion upward. At this time, both columns 18 are rotated inward to build up both columns 18, 18 and the columns 18 and truss 16 are fixed to form an arch-shaped truss.

According to this embodiment, since it is not necessary to move the column 18 in parallel, it is possible to easily assemble and install even in a limited space.

5 to 10 show the first embodiment of the dome construction method using the truss 16 described above.

As shown in FIGS. 5 and 1 (A), a plurality of trusses 16 are arranged in parallel on a plurality of hoists 22, and columns at both ends of each truss 16 are arranged in a lying state. Pins 18 and 18 are joined.

Assembling of the truss 16 is carried out at the factory in principle, as long as it can be transported.

Next, as shown in FIGS. 6 and 7, ground work is carried out between the trusses 16 and 16 and between the struts 18 and 18, and joists, braces, roofing materials and the like are attached.

Furthermore, various installation work to the truss beam is performed, and at this time, piping work, wiring work, installation work of lighting equipment and the like can be performed.

After the installation work is completed, the truss 16 is lifted by a plurality of hoists 22 as shown in FIG. 8 and FIG. 1 (B), whereby both columns 18 move inward and the columns 18 are built up. After that, the lower ends of the columns 18 are supported on the foundation, and the columns 18 and the truss 16 are fixed.

After removing the hoist 22 for lifting the truss 16 as shown in FIG. 9, the tension cable 20 is tensioned by the operation of the hydraulic jack 32.

When the tension cable 20 is pulled, the length of the lower chord member 12 constituting each truss 16 is shortened and the truss 16 is curved in an arc shape.
As shown in (C), the central portion is pushed upward, and a dome-shaped dome is constructed.

As described above, according to this embodiment, since the work of attaching the beam or roof material between the trusses 16 and 16 can be performed on the ground, it is possible to minimize temporary materials such as scaffolds. In addition, the material can be easily transported, and therefore, the dome having a high effective ceiling height can be safely and easily constructed.

Further, since the dome can be constructed only by constructing the columns after attaching the roofing material and the like and tensioning the tension cable, the construction is simple and the construction period can be shortened and the construction cost can be reduced.

11 to 13 show a second embodiment of the dome construction method using the truss 16 described above.

In this embodiment, the columns 18, 18 pin-joined to both ends of the truss 16 are pin-supported by the base plate 26. These columns 18 are formed in an inverted Y shape as shown in FIGS. 12 and 13, and are arranged in a state of being inclined outward, contrary to the first embodiment.

After the installation work of the truss 16 and the support column 18 is completed, a beam or roofing material is attached between the trusses 16 and 16.

Thereafter, the tension cable 20 is tensioned and the lower chord member 12 is shortened, whereby each truss 16 is curved in an arc shape and the central portion is pushed upward, and at the same time, both columns 18 and 18 are rotated inward. It is built and built up.

After that, the columns 18 and the truss 16 are fixed to each other, and the beam and the outer wall material are attached between the columns 18 and 18 to construct an arch-shaped dome.

According to this embodiment, since it is not necessary to move the column 18 in parallel, the work of constructing the dome can be easily performed even in a limited space. Further, since the support column 18 is formed in an inverted Y shape, it is excellent in appearance.

[0075]

As described above, according to the method of manufacturing a truss of the present invention, the columns are joined to each other by the pins in a state of being laid on both ends of the truss. Since it can be lowered, work in high places is extremely small. Therefore, the installation work can be performed safely and easily, and the manufacturing cost and the work time can be shortened.

Further, according to the construction method of the dome of the present invention, the work of attaching the beam or roof material between the trusses can be performed on the ground, so that the temporary materials such as scaffolding can be minimized, Materials can be easily transported, and therefore, a dome with a high effective ceiling height can be constructed safely and easily.

Further, since the dome can be constructed only by constructing the columns after attaching the roofing material and tensioning the tension cable, the construction is simple, the construction period can be shortened, and the construction cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a truss manufacturing method.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an enlarged view of part D in FIG.

FIG. 4 is a schematic diagram showing the operation of the present invention.

FIG. 5 is a perspective view (No. 1) showing a dome construction process.

FIG. 6 is a perspective view (No. 2) showing the dome construction process.

FIG. 7 is a perspective view (No. 3) showing the process of constructing the dome.

FIG. 8 is a perspective view (No. 4) showing the process of constructing the dome.

FIG. 9 is a perspective view (No. 5) showing the process of constructing the dome.

FIG. 10 is a perspective view (No. 6) showing the process of constructing the dome.

FIG. 11 is a front view showing a second embodiment of the method for manufacturing the truss or the method for constructing the dome.

FIG. 12 is a plan view showing a second embodiment of the dome construction method.

FIG. 13 is a side view showing a second embodiment of the dome construction method.

[Explanation of symbols]

 10 Upper chord material 12 Lower chord material 14 Lattice material 16 Truss 18 Strut 20 Tension cable 22 Hoisting machine 24 Guide rail 26 Base plate 28 Outer pipe 30 Inner pipe 32 Hydraulic jack

Claims (6)

[Claims] 1. An upper chord member (10), a lower chord member (12) at least a part of which can be shortened, and a lattice member (14).
Assembling the truss (16) having, and connecting the upper ends of the struts (18, 18) that are laid down and arranged to the ends of the truss (16) by pins, respectively, and the truss (16) to the hoist (22) Lift up, move the lower end of each strut (18) inward to build up both strut (18, 18), and support the lower end of each strut (18) on the foundation,
The upper end of each column (18) is fixed to the truss (16), the lower chord member (12) is shortened, the truss (16) is curved in an arc shape, and the central portion is pushed upward, whereby an arch-shaped truss. Forming a truss. 2. An upper chord member (10), a lower chord member (12) at least a part of which can be shortened, and a lattice member (14).
And, and the lower chord member (12) has a tension cable (20).
Assemble the truss (16) slidably attached to the truss (16), and attach the upper ends of the columns (18, 18) lying down to the ends of the truss (16) by pin-joining the truss (16). (22) lifts upward, moves the lower end of each strut (18) inward to build up both strut (18, 18), and supports the lower end of each strut (18) on the foundation,
By fixing the upper end of each strut (18) to the truss (16), the tension cable (20) is tightened to shorten the lower chord member (12), and thus the truss (16) is curved in an arc shape so that the central portion thereof is curved. Push upwards to form an arched truss,
A method of manufacturing a truss, which is characterized in that 3. An upper chord member (10), a lower chord member (12) at least a part of which can be shortened, and a lattice member (14).
And a truss (16) having the
After the ends of the truss (16) are pin-joined to the upper end of the truss (16), the lower chord (12) is shortened, the truss (16) is curved in an arc shape, and the central portion is pushed upward. A method for manufacturing a truss, characterized in that an arch-shaped truss is formed by rotating the struts (18, 18) to be built up and fixing the struts (18) and the truss (16). 4. An upper chord member (10), a lower chord member (12) at least a part of which can be shortened, and a lattice member (14).
And, and the lower chord member (12) has a tension cable (20).
Assemble the truss (16) slidably attached to the strut (1), which is placed and laid down, and the lower end of which is supported by a pin (1).
After the ends of the truss (16) are pin-joined to the upper ends of the truss (16), the tension cable (20) is tightened to shorten the lower chord member (12), thereby bending the truss (16) in an arc shape. And push the center part upward, and at the same time
8) A method of manufacturing a truss, characterized in that an arch-shaped truss is formed by rotating and building up and supporting the column (18) and the truss (16). 5. An upper chord member (10), a lower chord member (12) at least a part of which can be shortened, and a lattice member (14).
And, and the lower chord member (12) has a tension cable (20).
Assemble a large number of trusses (16) slidably attached to each other, arrange these trusses (16) in parallel, and place the upper ends of the two columns (18, 18) that are laid down. After connecting the trusses (16) arranged in parallel to the ends of the trusses (16) and installing the beams and roofing materials between the trusses (16, 16) and the columns (18, 18), ) With a hoist (22),
While moving the lower ends of the columns (18) joined to the trusses (16) inward to build up both columns (18, 18), the lower ends of the columns (18) are supported on the foundation,
By fixing the upper end of each strut (18) to the truss (16) and tightening the tension cable (20) to shorten the lower chord member (12), each truss (16) is curved in an arc shape and the central portion thereof. The dome construction method is characterized in that the dome is pushed up to construct a dome with a substantially kamaboko shape. 6. An upper chord member (10), a lower chord member (12) at least a part of which can be shortened, and a lattice member (14).
And, and the lower chord member (12) has a tension cable (20).
Assembling a large number of trusses (16) slidably attached to each other, arranging a plurality of these trusses (16) in parallel, laying them down, and placing two columns (18, 18, Pins are connected to the ends of the trusses (16) that are arranged in parallel with each other, and after the beam and roof material are attached between the trusses (16, 16) and between the columns (18, 18), the tension cable By tensioning (20) and shortening the lower chord (12), each truss (16) is curved in an arc shape and the central portion is pushed upward, and at the same time, both columns (18,
18) The dome is constructed by rotating and building it, and by fixing the pillar (18) and the truss (16), an arch-shaped dome is constructed.