Integral two-way partial one-way steel-concrete slab composite floor and its construction method

Abstract

The invention relates to an integral two-way partial one-way steel-concrete composite floor and a construction method thereof, belonging to the field of structural engineering. The invention consists of an integral two-way steel main girder, a local one-way steel secondary girder and a concrete slab. The two-way steel main girder is an I-shaped section or a box-shaped section; the local one-way steel secondary beam is an I-shaped section; The upper flanges of main beams and unidirectional steel secondary beams cover the grids between steel beams. The overall two-way partial one-way steel-concrete composite floor of the present invention can fully exert the material characteristics through the combination effect, and realize the force effect of the overall two-way support. On the basis of ensuring the mechanical performance of the structure, the number of nodes is reduced to further facilitate the construction of the steel structure.

Description

technical field [0001] The invention relates to a novel long-span floor structure (15m≤span L≤70m), which belongs to the field of structural engineering. Background technique [0002] In traditional building structures, reinforced concrete rib beam floors, reinforced concrete well-shaped floors or unidirectionally supported steel-concrete composite beam floors are usually used. However, when the plane size and column distance of the building are significantly increased or vertical support members are not allowed indoors, these floor structures cannot meet the requirements of the development of long-span structures in terms of bearing capacity and seismic performance. The developed two-way steel-laminated slab concrete composite floor has solved the above problems, but the number of nodes is large, which increases the workload of node connection, and the amount of steel used is too large due to the large number of cross-shaped intersection nodes. Contents of the invention ...

AI Technical Summary

Problems solved by technology

However, when the plane size and column spacing of the building are significantly increased or vertical support members are not allowed indoors, these floor structures can no longer meet the requirements of the development of long-span structures in terms of bearing capacity and seismic performance.

The two-way steel-laminated slab concrete composite floor that has been developed has solved the above problems, but the number of nodes is large, which increases the workload of node connection, and the steel consumption is too large due to the large number of cross-shaped cross nodes

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