JP3693893B2 - Structure construction method and construction apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction method and a construction apparatus for a structure such as a large roof structure in which a truss material obtained by joining upper chord material and lower chord material via a web material is assembled in a mesh shape, for example. It can also be applied to girder structures.
[0002]
[Prior art]
Structures such as large roof structures are usually constructed by assembling them divided into an appropriate number of blocks, but since there are many members and types that make up the structure, sorting and selection work is required at the time of construction. It took a lot of time and effort. In addition, if the blocks divided at the time of assembling cannot be reliably joined, the structure itself cannot be self-supported, so that temporary support is required for construction.
A conventional example of a structure construction method using such a temporary support will be described with reference to FIG.
[0003]
The number of temporary supports 22 erected on the foundation in the lower structure (frame) 23 that becomes the periphery of the structure is the number required on the foundation G on the ground where the structure 21 is built in advance. Only standing up. A jack 29 and a laminated liner 31 are fixed to the top of the temporary support 22, and the structure assembled by being divided into blocks on the ground is lifted on the temporary support 22 using an assembly crane or the like, and a jack receiving portion 30 is placed and fixed on the jack 29 and the laminated liner 31. The support 24 on the periphery of the structure is fixed to the lower structure 23.
When the assembly by joining the framework of the block-like structure on the temporary support 22 and the lower structure 23 is completed, the jacks 29 on the temporary support 22 are all loosened at the same time in order to make the structure 21 independent. Down, and finally the total load of the structure is transferred to the lower structure 23 by the peripheral support portion 24.
[0004]
[Problems to be solved by the invention]
However, in such a conventional construction method, in order for the structure 21 to be independent, the jack 29 on the temporary support 22 that supports each part of the intermediate part of the structure 21 that is not so strong compared to the peripheral part. It is necessary to loosen all the jacks at the same time and to jack down. It is necessary to place workers (manual jack adjustment work) at all points or to operate all jacks 29 ... simultaneously by automatic control. The arrangement of a large number of workers at high places is not practical due to safety problems, and there is a possibility that efficiency may deteriorate. In addition, for complete automatic control, the device becomes complicated and expensive, and when automatic control is performed without placing a supervisor, there remains a safety problem in a specific construction form called a structure. However, the improvement of the monitoring system diminished the advantages of automatic control, and it was not practical because it would require extra construction costs for the installation of the automatic control device.
[0005]
Therefore, in the present invention, it is possible to solve the problems of the conventional construction method of the structure and perform a jack operation in which a load is borne at a peripheral portion having a relatively high strength, so that even simple equipment and a small number of personnel can be used. An object of the present invention is to provide a construction method and construction device that can be constructed safely.
[0006]
[Means for Solving the Problems]
For this reason, the present invention provides a structure comprising a large number of jacks placed on a lower structure serving as a peripheral edge of a structure, a number of jacks on temporary supports erected on a foundation in the lower structure, and a laminated liner. After the structure of the structure is completed by supporting the structure, all jacks on the lower structure are pushed up, and the total load of the structure is borne through the laminated liner. After lowering the position and removing the laminated liner one after another to make it unloaded , then following the support of the full load by the laminated liner when the jack on the lower structure is tilted, the correction of the jack swing and the jack performs removal of the laminated liner after performing the support of full load, hereinafter, by sequentially repeating the jack and alternating operation of lamination liner on the lower structure, removing all of the laminated liner Yakki stepwise lowered, is characterized in that the supporting and fixing the bearing structure on the lower structure.
The present invention also relates to a construction apparatus used in the construction method of the structure, wherein the lower structure is a peripheral edge of the structure constructed on the foundation, and is erected on the foundation in the lower structure. It is composed of a number of temporary supports, a combination of these lower structures and jacks and laminated liners placed on the temporary supports, and these are used as means for solving the problems. It is.
[0007]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and FIG. 2 show an embodiment of a structure construction method and construction apparatus according to the present invention. FIG. 1 (A) is a half-cut plan view of the structure being constructed, and FIG. ) Is a front view thereof and an enlarged view of a support portion to the lower structure, and FIG. 2 is a detailed front view showing a temporary support under construction and a jack state on the lower structure.
The construction method of the structure of the present invention will be described in detail. As shown in FIG. 1 (B), the lower structure (casing) 3 which is the periphery of the structure 1 and the foundation G in the lower structure 3 are set up. A structure 1 is constructed on a number of temporary supports 2, 2... Which are provided, jacks 5 and 5 on the lower structure 3, and jacks 9 and 9 and a laminated liner on the temporary support 2. 11 and 11 are mounted in combination (see FIG. 2 for the lower structure 3 part), and the structure 1 divided into an appropriate number of blocks and assembled on the foundation G is not shown for each block. Lift with a lifting machine such as an assembly crane.
[0008]
Next, the skeleton of the structure 1 is completed by being supported by the jacks 5 and 5 on the lower structure 3 and the jacks 9 and 9 on the temporary support 2 and the laminated liners 11 and 11, as shown in FIG. As shown in the figure, all jacks 5, 5... On the lower structure 3 are pushed up to bear the full load of the structure 1 through the lower laminated liners 7, 7, and then the temporary supports 2, 2,. The upper jacks 9, 9... Are lowered stepwise and the laminated liners 11, 11... Are sequentially removed, and then all the jacks on the lower structure 3 as shown in FIG. 5, 5,... Are lowered to support and fix the support portion 4 of the structure 1 on the lower structure 3 while sequentially removing the lower laminated liners 7 and 7.
[0009]
When all the jacks 5, 5... On the lower structure 3 are pushed up and the lower structure 3 bears the total load of the structure 1 via the lower laminated liner 7 in detail, 2A, that is, when all the jacks 5, 5... On the lower structure 3 are pushed up, the intermediate portion of the structure 1 becomes a jack receiving portion 10 on each temporary support 2, 2. ..., the structure 1 is slightly expanded by its own weight, and the outer peripheral edge of the structure 1 moves radially outward. Accordingly, each jack 5 on the lower structure 3 swings slightly outward with the bottom as a center.
A lower liner 7 is stacked and added to a gap between the lower support portion 4 at the lower periphery of the structure 1 raised by extension of the jack 5 on the lower structure 3. Thereby, even if the jack 5 is lowered, the lower laminated liner 7 can bear the full load of the structure 1. At this time, the swinging and tilting jacks 5 and 5 are configured to be restored to normal positions by manual or automatic control or an automatic correction device configured by placing the jack on the rail.
[0010]
From this state, the upper laminated liners 11 and 11 on the temporary supports 2 in the no-load state are sequentially removed step by step in combination with the expansion and contraction operation of the jack 9. Following the support of the upper laminated liners 11, 11 by the lowering of the jack 9 on the temporary support 2, the removal of the lower liner 7 after the support by the jack 5 on the lower structure 3, and then the jack on the temporary support 2. Removal of the upper laminated liners 11 and 11 after the extension of 9, 9 and support by the upper laminated liners 11 and 11 after the lowering of the jacks 9 and 9 and the alternate operation by the jack and the laminated liner on the lower structure 3 hereinafter. And the alternate operation by the jack and the laminated liner on the temporary support 2 are sequentially repeated, so that the structure 1 is gradually jacked down, and finally the support portion 4 of the structure 1 is lowered onto the lower structure 3. Support and fix.
[0011]
As described above, each embodiment of the present invention has been described. Within the scope of the present invention, the shape of the structure (not limited to a circle, a triangle, a rectangle, a polygon, etc.), a form (in addition to a truss structure, Girder structure, etc.), the shape of the lower structure, the form, the shape of the temporary support, the form and its installation form, the number, the lifted form of the divided and blocked structure and the joint form between them, the structure The support form to the lower structure and the temporary support, the shape and form of the jack and the laminated liner, the arrangement form, and the related configuration between them can be appropriately adopted.
[0012]
【The invention's effect】
As described above in detail, according to the present invention, by performing the jack operation by transferring the load of the structure borne by the temporary support to the lower structure which is the peripheral portion having a relatively high strength. It is possible to jack down the structure, and even with simple equipment and a small number of personnel, the structure can be constructed at a low cost and safely and with a shortened construction period.
In addition, the jacking work while bearing the load of the structure can be performed on the secure lower structure of the scaffolding that is strong and close to the ground, so that the safety of the work can be ensured.
Furthermore, the number of jacks can be greatly reduced as compared with the conventional jackdown on the temporary support, and the equipment cost and the labor can be reduced.
Thus, according to the present invention, a construction method and a construction apparatus for a structure that can be constructed safely even with simple equipment and a small number of personnel by performing a jack operation that bears a load at a peripheral portion having a relatively high strength. Is provided.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a structure construction method and construction apparatus according to the present invention. FIG. 1 (A) is a plan view in which a structure is being cut halfway, and FIG. It is the front view and the enlarged view of the support part to a lower structure.
FIG. 2 is a detailed front view showing a state of a temporary support under construction and a jack on a lower structure.
FIG. 3 is a front view showing a conventional construction method for a roof structure.
[Explanation of symbols]
1 ··· Structure 2 ··· Temporary support 3 · · · Lower structure (frame)
4... Lower support part 5... Lower jack 6... Lower jack receiving member 7 .. Lower laminated liner 8. Jack receiving part 11 ... Upper laminated liner G ... Basic (ground)

Claims (2)

The structure is supported by a large number of jacks placed on the lower structure serving as the peripheral edge of the structure, and a number of jacks on the temporary support and a laminated liner that are erected on the foundation in the lower structure. After completing the framework of the object, push up all the jacks on the lower structure, bear the full load of the structure through the laminated liner, lower the jack on the temporary support and laminate the liner After removing the load sequentially and removing the load, the load on the lower structure is supported by the laminated liner when the jack is tilted. Then, the tilt of the jack is corrected and the load is supported by the jack. performs removal of the laminated liner on the following, by sequentially repeating the jack and alternating operation of lamination liner on the lower structure, stepwise every jack and removal of the laminate liner Tassel so, the method for constructing a structure characterized by supporting and fixing the bearing structure on the lower structure.   A construction apparatus for use in the construction method for a structure according to claim 1, wherein the lower structure is a peripheral edge of the structure constructed on the foundation, and is erected on the foundation in the lower structure. An apparatus for constructing a structure comprising a plurality of temporary supports and a combination of a lower liner and a jack and a laminated liner placed on the temporary supports.

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