JPS584043A - Construction of dome type large roof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing a large dome-shaped roof in an all-weather stadium or the like.

Diameter approximately -〇QW1. Large-scale steel-framed dome-shaped roofs with a height of 70 m have not yet been constructed in Japan, and there are only a few examples of construction outside Japan. These large dome-shaped roofs were constructed using the nine methods of constructing human-scale shoring across the entire area of the roof, then lifting and assembling steel frames using cranes.

Therefore, many large temporary supports are required, and a huge amount of materials and
In addition to requiring labor and construction costs, a large ridge is required to lift heavy objects to a high position, and this may result in large-scale temporary construction◆, which may impede the progress of other work. As a result, the overall construction period was long, and since there was a lot of work to be done at heights, not only was large-scale curing (safety measures against N2) required, but there were also major problems in terms of work efficiency and quality assurance.

The present invention proposes a method for constructing a large dome-shaped roof that can solve these problems.

That is, the method for constructing a large dome-shaped roof according to the present invention is #1.
The central gantry assembled in the center of the dyeing area and the outer stand assembled in the outer part are equipped with rounded ring-shaped rails that support the dome-shaped large roof steel frame in a manner that allows it to pivot around the central gantry. At the same time, a stationary gantry is assembled between the central gantry and the outer end stands, multiple large trusses and roof trusses are assembled between them on the stationary gantry, and the assembled portion is placed at a predetermined angle along the rail. After turning, assemble the next large truss and the roof truss between the large truss and the assembled part on the stationary gantry, and then repeat the turning of the assembled part and the assembly of the large truss and roof truss in sequence. It is unique in that it has a large dome-shaped roof.

Below, ij! of the present invention! Examples will be reviewed based on the wJ orientation.

First, as shown in Figures 1 and 2), the upper part of the central gantry 1 is assembled in the center of the construction site, and the external platform 1 is assembled in the outer girder. At the top of the stand 2, ring-shaped rails A15 and 4 are installed to support the dome-shaped large roof steel frame so that it can pivot around the central gantry 1, while between the central gantry 1 and the outer end stand 2 there are , A stationary gantry 5 in the form of a planar, substantially trunk-shaped structure that takes a reaction force to these elements 1 and 2 is assembled in advance.

In this embodiment, the outer end stand 2, the central gantry 1, and the stationary gantry 5 are assembled together, but the assembly steps for the outer end stand 2 and the central gantry 1 may be reversed. Further, a self-climbing type tower crane 6 is provided on the central gantry 1, and a welfare crane (for example, a Kroetz crane) 7 is mounted on the stationary gantry 5.

A compression ring 8, which becomes a part of the dome-shaped large roof steel frame, is supported on the central gantry 1 so as to be able to rotate along the rail δ. A shoe (not shown) corresponding to the rail black is provided on the compression ring 8, and one of the surfaces of both is treated with Teflon (trade name).

Next, the assembled large truss unit was moved to the tower crane 6.
The crane 7 on the stationary gantry 5 is hoisted onto the stationary gantry 5 using a Kroetz crane (not shown) placed on the ground. One big truss! Assemble ... and fix the inner end glue of the double hole truss 9 ... to the compression ring 8, while the area near the outer end of the double hole truss 9 ... becomes a part of the dome-shaped large roof steel frame. The tension ring units 10- are connected, and the unit units 10- are rotatably supported on the rail 4 via shoes similar to those described above, and then double-hole trusses 9-- are connected.
- Assemble the roof truss 11 in between. Furthermore, roof truss 11
In this method, a plurality of units are assembled on the ground, and each crane is used to lift and assemble the units. First, the roofing work is carried out following the assembly of the roof trusses 11.

Next, as shown in Fig. 2e, the assembled parts (one large truss 9..., tension ring unit 10# , the nine roof parts assembled by the roof truss 11, etc.) are turned along the predetermined angle rail 6°4, and then the next large trussor is assembled on the stationary gantry 5, and the large truss 9 and the assembled part are The tension ring unit 1 is connected between 9 large trusses of
0# and assemble the roof truss 11.

In addition, in this embodiment, large trusses 9, which are constructed radially,
The total number of... is one, and the square tomb between the large trusses 9... is WJ degree, so the distance between the completed parts is y.
It is rotated by j degrees.

(See Fig. 2 below for the turning of the completed part of the large truss)
As shown in FIG. 2, a dome-shaped large roof steel frame having a tension ring 10 and a roof truss 11 that are continuous over the entire circumference is assembled, and roofing work inside the combined V-shaped ring 8 is performed. Then, the large dome-shaped roof steel frame is rotated by 2 circles, and the stationary gantry 5 is used as a work floor to carry out finishing work and equipment work on the underside of the roof. They will be dismantled in order.

The present invention has the following effects due to the rounding structure described above.

■ Labor saving is possible.

Rather, a fixed gantry was installed between the central gantry and the external stand,
Since the large truss, roof truss, etc. are assembled on a stationary gantry, and the same assembly work is performed by sequentially turning the trusses at a predetermined angle, the number of temporary supports for steel frame work is reduced, which is rational.

Since the stationary gantry is assembled between the central gantry and the outer pigeon stand, the foundations of the central gantry and the main structure (outer pigeon stand) can be used, and a special foundation for the stationary gantry is not required.

There is no need for safety measures such as large-scale work scaffolding or fall protection over the entire area of the large roof.

Since work can be done close to the large roof construction location, the large roof steel frame can be erected using a small crane.

Since the stationary gantry can be used as a work floor for facility work and finishing work◆, temporary construction work is significantly reduced.

Therefore, it has become possible to save labor.

■ Can be constructed in a short construction period.

Preparation work for large roof steel frame work is relatively small, so
Large roof steel frame work can be started quickly, and since large-scale temporary construction work is not required, there are fewer restrictions on flat areas, and the work can often be done concurrently with other work. Therefore, it can be constructed in a short period of time.

■ Easy to manage, easy to ensure quality, and very safe.

Since there is a work floor (stationary gantry) near the cape and the work location, inspection, confirmation, and adjustment are easy, and there is less work at heights, which increases safety.

■ Cost reduction is possible.

That is, it is possible to reduce the total cost by saving labor, shortening the construction period, reducing the need for temporary precious materials, and using a small crane.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an enlarged schematic four-sided view;
Figures 2 (1), (u), (c), and (c) are schematic plan views showing the steps. . 1...Central gantry, 2-・Outer stand, 3゜4・
・Ring down rail, 5. Stationary gantry, 11.
...Roof truss. Procedural amendment; 'F (i' female) Director General of the Patent Office 1 - Indication of II '1 tl? f l+I 5 fl 'l patent vm h+ 10
2889 Y:3 Relationship with person making amendment 131-1'l Patent applicant 4 Agent
Person 5 Weight of amendment order 6 Number of inventions to be increased by amendment

Claims (1)

[Claims] The central gantry assembled in the center of the construction site and the outside P! 11g
On the external stand assembled in step 6, a rounded ring-shaped rail is installed to support the large dome-shaped roof steel frame so that it can pivot around the central gantry, while a stationary gantry is assembled between the central gantry and the external station stand. Then, assemble multiple large trusses and the roof truss between them on the stationary gantry, turn the assembled part of the roof at a predetermined angle along the first rail, and then assemble the next large truss on the stationary gantry. and a dome characterized by assembling the roof truss between the large truss and the assembled part, and then sequentially turning the assembled part and returning the assembly of the large truss and the roof truss to construct a dome-shaped large roof. How to construct a molded J11 root.