Construction method of large space building

Abstract

A construction method of a large space structure (1) in which the stress remaining after construction due to deformation during a lift up can be reduced. The construction method of a large space structure is characterized in that truss columns (21, 21) becoming the columns of a gate truss (2) are erected on the front (F) side at an interval in the lateral direction, a back side portion (4) is constructed on the rear (R) side, a truss beam (22) becoming the beam of the gate truss and a roof structure (3) extending from the truss beam toward the rear side are assembled in the vicinity of the ground, the truss beam and the rear end portion of the roof structure are lifted up to a predetermined height, the truss beam and the truss column are joined in such a state that the rear end portion is lifted to a higher position than the truss beam, and then the rear end portion is lowered and joined to the back side portion.

Description

technical field [0001] The present invention relates to a method for constructing a large-space building such as a hangar for an airplane, a sports arena with a roof, and a warehouse where columns or walls cannot be provided in the middle. Background technique [0002] In the past, as disclosed in Patent Document 1 (Japanese Patent No. 2945917) and Patent Document 2 (Japanese Patent No. 2979039), a large-space building was built by erecting a roof frame composed of trusses on columns erected at the four corners. methods are known. [0003] Various methods have been proposed and implemented as a method of erecting the roof frame between the columns. [0004] For example, there is a "descending construction" in which temporarily installed brackets are assembled in advance to the height of the roof frame, a lifting device is installed on the temporarily installed bracket, and the roof frame is assembled on the elongated lifting device, and then the lifting device is lowered. ...

AI Technical Summary

Problems solved by technology

[0006] However, in the conventional "drop construction method", the scale of temporarily installed supports becomes large in proportion to the area and height of the roof frame. Therefore, when constructing a large-space building, the installation and removal of temporarily installed supports Time-consuming becomes the reason for the extension of the construction period and the increase of the cost

[0007] On the other hand, if you want to use the "lifting construction method" to build a structure with a large span that cannot be equipped with columns in the front, such as an aircraft hangar, when the roof structure is lifted, the planar roof structure will be broken due to its own weight. bend, twist

[0008] Moreover, if the deformation of such a roof frame during hoisting is not corrected and combined with the column, this stress state will continue after construction, and the roof frame must be reinforced as a long-term acting load, thereby increasing manufacturing cost

[0009] In addition, if the deformation of the roof frame during erection increases, misalignment of the relative position of the column to be combined will occur, and it will take time to align the joint and reduce work efficiency.

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