JPH0718743A - Construction method for large span domelike roof - Google Patents

Abstract

PURPOSE:To promote construction efficiency of a dome-like roof to shorten a construction period, to reduce the number of bent working platforms to promote work efficiency by reduction of a construction cost and securement of an internal working space, to miniaturize heavy machines used for erecting and raving temporary toss and to reduce the number of heavy machines. CONSTITUTION:A plurality of temporary towers 12 used for suspending a roof frame 13 13 are installed in the area A inside the peripheral surface structural body 11 forming the circumference of a large-scale facility S. In the case of field assembly of the roof frame 13, the roof frame 13 is assembled in a field in a state that the temporary towers 12 pass through the the roof frame 13 vertically. The roof frame 13 assembled in the field is suspended by means of the temporary towers 12 and is constructed on the upper part of the peripheral surface structural body 11. After the temporary towers 12 are removed, penetration sections of the temporary towers 12 of the roof frame 13 are repaired.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-span dome roof suitable as a technique for constructing a dome-type roof in a stadium such as a baseball or soccer field or other large-scale facility having a dome-type roof. Regarding the erection method.

[0002]

2. Description of the Related Art In recent years, large-scale fixed dome type roofs have been adopted in large-scale facilities. A steel truss structure is widely known as a structural type of the fixed dome type roof. This steel truss structure consists of a multi-layer truss dome in which the structural steel aggregates are connected in a three-dimensional truss shape and relatively good structural stability is obtained, and a single-layer truss dome in which the structural steel aggregates are connected in a planar truss shape. It is classified.

By the way, in the prior art, for example, when a fixed dome type roof is constructed by adopting a steel truss structure type, a large span steel truss necessary for a roof frame is preliminarily divided into a plurality of unit steel trusses, After framing the building, a method of constructing a roof frame by constructing a large span steel truss by welding the unit steel trusses at the position where the roof should be erected while sequentially hoisting them with a large heavy machine was adopted. .

[0004]

However, in such a conventional method for constructing a large-span dome roof, the work period is prolonged because a large number of unit steel frame trusses are individually lifted and assembled. In addition, most of the erection work is done at high places, so the workability is poor. In addition, during the construction period of the dome roof, a considerable number of vent gantry and jack devices that have the function of supporting work to support the roof frame from the inside are required, and these are installed inside the dome. There is also a problem that the internal work space cannot be taken large. Furthermore, in order to construct a dome roof with such a large span by the conventional construction method, the roof itself will be of a considerable scale and height, so it will be necessary to build and remove heavy equipment that is extremely large. Therefore, there has been a problem that the construction cost is increased accordingly.

The present invention has been made in consideration of the above points. The workability of the dome roof is improved to shorten the construction period, and the amount of vent gantry and jack device used is reduced to reduce the construction cost. It is intended to provide a method for constructing a large-span dome roof that can reduce workability and improve workability by securing an internal work space, and can also reduce the size and amount of heavy equipment for construction and removal. Is.

[0006]

The invention according to claim 1 is
This is a method of constructing a large-span dome roof in which a dome-type roof frame is erected in the inner area of the outer structure that forms the periphery of a large-scale facility, and the entire roof structure is hoisted and erected on the outer structure. Then, in the inner region of the outer peripheral structure,
A step of installing a plurality of temporary towers used for lifting the roof frame; a step of erecting the roof frame in a form in which the temporary tower vertically penetrates when the roof frame is erected; A step of hoisting the roof frame using the temporary tower and erection on the upper part of the outer peripheral structure; and a step of repairing a penetrating part of the temporary tower of the roof frame after removing the temporary tower. Is characterized by.

According to a second aspect of the present invention, in the method for constructing a large-span dome roof according to the first aspect, a finishing material necessary for a dome roof such as a ceiling material and a roof exterior material is preliminarily used in a grounding step of the roof frame structure. The feature is that it is given.

[0008]

In the method for constructing a large-span dome roof according to claim 1, since the dome type roof frame is erected within the inner region of the outer peripheral structure which constitutes the periphery of the large-scale facility, the vent for supporting the roof frame is constructed. The usage of gantry and jacks will inevitably decrease. Further, since the number of vent gantry, jacks, etc. is reduced, the internal work space is widened and the workability is improved.
Also, when the roof frame is erected, the roof frame is erected so that the temporary tower penetrates vertically, so it is possible to use the temporary tower to lift the entire roof frame. The efficiency of construction work of the frame can be improved.

In the method of constructing a large-span dome roof according to claim 2, since the dome roof such as a ceiling material and a roof exterior material is provided with necessary finishing materials in advance in the process of assembling the roof frame, the roof frame is lifted. Most of the dome roof is constructed just by erection. Further, since the finishing material is applied to the roof frame structure which is a work on the ground, workability is improved accordingly.

[0010]

EXAMPLE A method for constructing a large-span dome roof according to the present invention will be described below with reference to the accompanying examples shown in FIGS. In FIG. 1, reference sign S is a large-scale facility having a large-span dome roof 10 constructed by applying the erection method of the present invention, and the large-scale facility S has an outer peripheral structure 11 forming the periphery thereof. The interior is constructed as a large space by the dome roof 10 erected thereon. Here, the outer peripheral structure 11 has a height of a plurality of stories and is constructed in a so-called donut shape with a height of several tens of meters as a whole.

Next, a specific example of a method for constructing the dome roof 10 on the outer peripheral structure 11 will be described with reference to FIGS. 2 to 4. First, the outer peripheral structure 1 of the large-scale facility S
After the construction of 1 or in parallel with the construction of the outer peripheral structure 11, a plurality of temporary towers 12 ... Are installed on the ground G in the inner area A surrounded by the outer peripheral structure 11 as shown in FIG. To do.

The temporary tower 12 has such a height that the roof frame 13 which constitutes the main body of the dome roof 10 to be erected can be lifted and has sufficient strength to withstand it, as shown in FIG. 3 in the embodiment. As described above, six groups are constructed radially from the center O of the roof frame 13, that is, at equal intervals on the circumference of the radius R separated from the center O by a predetermined distance. In this temporary tower 12, if necessary, a pile 14 is driven into the ground G as shown in the drawing, and the pile 1
A base 15 is provided integrally with the base 4 so as to be stably supported by the base. The temporary tower 12 is of a so-called telescopic tower type having a convenient function for assembling and disassembling and capable of self-descent and elevating / lowering by an existing hydraulic jack, for example.

Next, on the ground G in the inner area A,
As shown by a virtual line in FIG. 2, the roof frame 13 of the dome roof 10 is erected. As a structural form of the roof frame 13, a method of hoisting the entire roof frame 13 and erection is adopted. Therefore, in order to obtain good structural stability in the roof frame 13 itself, in the embodiment, the structural truss is made of a three-dimensional truss. A multi-layer truss dome type steel frame truss structure is used.

Incidentally, in the process of assembling the roof frame structure 13, since a plurality of temporary towers 12 already exist on the ground G, as shown in FIG.
2 so that the roof frame 13 does not interfere with the roof frame 13
Is erected so that the temporary tower 12 penetrates. Further, in the process of assembling the roof frame 13, finishing materials such as ceiling materials and roof exterior materials (not shown) are also applied. Here, since a finishing material such as a ceiling material or a roof exterior material cannot be provided in a portion where the temporary tower penetrates the roof frame 13, it is left as an opening. Incidentally, in the process of assembling the roof frame 13, the temporary tower 12 itself may be used as a support work or a gantry, if necessary.

After the process of assembling the roof frame structure 13 is completed, next, the roof frame structure 13 is hoisted by using each temporary tower 12, the outer peripheral structure body 11 and the roof frame structure 13 are connected, and the roof frame structure 13 is surrounded. It is installed above the structure 11. Here, as a method of hoisting the roof frame 13, the roof frame 1
In consideration of the balance and strength of No. 3, one end of each of the plurality of wire ropes 16 is extended from the upper part of each temporary tower 12 to a necessary node of the roof frame 13 and tied, and a hoisting winch or the like (not shown) is used. A method is adopted in which the other end of each wire rope 16 is wound and lifted. Since it is necessary to wind each wire rope 16 evenly or while balancing the roof frame 13, it is desirable that the winding control of the winding winch is performed by computer control.

After the roof frame 13 has been erected in this way, each wire rope 16 is removed, and then each temporary tower 12 is dismantled while descending by one step, and then the temporary tower of the roof frame 13 is penetrated. The opening of the existing part is repaired with finishing materials such as ceiling materials and roof exterior materials to complete the process. In the repair process using the finishing material, when the temporary tower 12 is lowered by itself and dismantled, the lowering of the temporary tower 12 is stopped immediately after the upper end of the temporary tower 12 has passed through the roof frame 13 downward. Alternatively, the temporary tower 12 in that state may be used as a gantry or scaffold during repair work.

According to the method of constructing the large-span dome roof according to the above-mentioned embodiment, the dome type roof frame 13 is erected on the ground G in the inner area A of the outer peripheral structure 11 which constitutes the periphery of the large-scale facility S. As compared with the conventional method of directly assembling the roof frame at the high position where the roof frame is installed, the roof frame 1
It is possible to inevitably reduce the amount of use of the vent gantry, the jack, etc. that support the 3. Further, by reducing the number of vent gantry, jacks, etc., the internal work space becomes wider and the workability can be improved. Also, the roof frame 1
3 is erected, and at that time, the roof frame 13 is erected in a form in which the temporary tower 12 penetrates vertically, so that the entire roof frame 13 can be hoisted by the wire rope 16 using the temporary tower 12. This makes it possible to improve the efficiency of the work for constructing the roof frame 13. Further, since the roof frame 13 is assembled to the ground and then suspended and erected by the temporary tower, it is possible to reduce the size and weight of the heavy machine for removing the building as compared with the conventional method.

In addition, since the necessary finishing materials are applied to the dome roof such as the ceiling material and the roof material in advance in the process of assembling the roof frame 13, most of the dome roof can be installed by simply hoisting the roof frame 13. Can be installed. In addition, since the finishing material is applied to the ground structure of the roof frame 13 which is a work on the ground, the workability can be improved accordingly.

In the embodiment, as the roof frame 13,
Although an example of a multi-layer truss dome type steel truss structure in which constituent steel aggregates are connected in a three-dimensional truss shape has been shown, in the present invention, a plurality of temporary towers 12 are used to hang and erect by a wire rope 16. Since it is a method, for example, if it is a roof structure that can appropriately increase or decrease the number of temporary towers 12 and wire ropes 16 and can be lifted in a well-balanced manner, a single-layer truss dome type steel truss structure, a cable structure, etc. Needless to say, it is also applicable to.

[0020]

As described above, according to the method for constructing the large span dome roof of the present invention, the following excellent effects can be obtained.

In the method for constructing a large-span dome roof according to claim 1, a step of installing a plurality of temporary towers used for hoisting a roof frame in an inner area of an outer peripheral structure which constitutes a periphery of a large-scale facility. And a step of erecting the roof frame in a form in which the temporary tower penetrates vertically when the roof frame is erected, and the outer peripheral structure is constructed by hoisting the erected roof frame using the temporary tower. Since it has a step of erection on the top and a step of repairing the penetration part of the temporary tower of the roof frame after removing the temporary tower, the workability of the dome roof is improved and the construction period is shortened. In addition, the amount of vent gantry and jack equipment is reduced to reduce the construction cost and improve the workability by securing the internal working space, and the heavy equipment for erection and removal is downsized and downsized. It is possible to achieve.

According to the method for constructing a large-span dome roof according to claim 2, since the necessary finishing materials are applied to the dome roof such as the ceiling material and the roof material in advance in the process of assembling the roof frame, the roof frame is constructed. Most of the dome roof can be constructed simply by hoisting and erection, and finishing materials are applied when constructing the roof frame, which is work on the ground, so workability can be improved accordingly. You can

[Brief description of drawings]

FIG. 1 is an external view of a large-scale facility showing an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing an embodiment of the erection method of the present invention.

FIG. 3 is a schematic plan view showing an embodiment of the erection method of the present invention.

FIG. 4 is a schematic cross-sectional view showing an embodiment of the erection method of the present invention.

[Explanation of symbols]

 S Large-scale facility A Inner area G Ground 10 Dome roof 11 Peripheral structure 12 Temporary tower 13 Roof frame 16 Wire rope

Claims (2)

[Claims] 1. A large-span dome roof in which a dome-type roof frame is erected within an inner region of an outer peripheral structure forming the periphery of a large-scale facility, and the entire roof frame is hung to be erected on the outer peripheral structure. A step of installing a plurality of temporary towers used for hoisting the roof frame in the inner region of the outer peripheral structure, and the roof frame when the roof frame is erected. A step of erection in a form in which the tower penetrates vertically, a step of hoisting the erected roof frame using the temporary tower and erection on the upper part of the outer peripheral structure, and a roof after removing the temporary tower And a step of repairing a penetrating portion of the temporary tower of the frame. 2. The method for constructing a large-span dome roof according to claim 1, wherein necessary finishing materials are applied to the dome roof such as a ceiling material and a roof exterior material in advance in the process of assembling the roof frame. How to construct a large span dome roof.