High-altitude bulk accurate assembling method for non-full-distributed supporting large-span steel structure

Abstract

The invention relates to a high-altitude bulk accurate assembly method for a non-full support large-span steel structure. The high-altitude bulk accurate assembly method comprises the following stepsthat S1, structure pre-deformation positioning coordinates are determined, specifically, a space mechanical model is established, computational analysis is performed on a structure formation form by adopting a finite element method, and space coordinates X<0> of the pre-deformation structure meeting the use and specification requirements are determined; deepening design is carried out according tothe pre-deformation coordinates X<0>, and steel structure component blanking is carried out; S2, assembly partitions and construction sequence are divided, specifically, the assembly partitions are divided, and temporary supports are arranged; S3, assembling is carried out on site; and S4, the support is removed and unloaded. According to the high-altitude bulk accurate assembly method, deformation deviation in the construction process can be effectively avoided under the non-full-distribution supporting condition, so that temporary supporting materials are effectively saved, the constructionprecision is improved, and the comprehensive benefits of construction are improved.

Description

technical field [0001] The invention relates to the field of steel structure installation, in particular to a high-altitude bulk and precise assembly method for a large-span steel structure with non-full support. Background technique [0002] At present, large-span steel structures have been applied and developed unprecedentedly at home and abroad. Due to their advantages of beautiful shape, reasonable force, high stability, material saving, and good shape of building space, they are often used in building structures. Wide application space. [0003] For long-span steel structure projects, especially for single-layer reticulated shells with high spatial modeling accuracy and weak out-of-plane rigidity, the deflection and deformation control of the structure is one of the important links in the construction process. Generally, it is solved by the method of pre-deformation. Firstly, the spatial coordinates of the structure after pre-deformation are determined, and through the...

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Problems solved by technology

[0006] The present invention aims to overcome the defects of the prior art, and provides a high-altitude bulk accurate assembly method for large-span steel structures with non-full support, which solves the problem that it is difficult to set temporary supports for each node when constrained by on-site construction conditions. The assembly accuracy of the high-altitude loose assembly method brings difficulties, resulting in the problem that the cumulative deviation between the node coordinates at the unsupported position and the pre-deformed space coordinates continues to increase

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