Combined structural-welding contracting connection structure and construction process

Abstract

The invention relates to a steel-concrete combined structure, and discloses a combined structural-welding contracting connection structure and a construction process. The structure comprises a corrugated steel web, flange plates, and a concrete; one surface of the flange plate is welded with the corrugated steel web, and the other surface is combined with the concrete; the flange plates comprise a left flange plate and a right flange plate; a connection approach slab is welded between the left flange plate and the right flange plate; and the left flange plate is connected with the right flange plate through welding. The process comprises: A. respectively welding the left flange plate and the right flange plate with the approach slab; B. welding the flange plates with the corrugated steel web; C. constructing concrete; D. directly welding the left flange plate with the right flange plate. According to the invention, through the arrangement of the approach slab, adjacent flange plates are welded after concrete pouring, and thus the welding contraction of the flange plates occurs simultaneously with the concrete creep and contraction; the vertical telescoping performance of connection keys is added to adapt concrete contraction and creep in the combined structure, and thus to prevent contraction crack of the concrete.

Description

technical field [0001] The invention relates to a steel-concrete composite structure, in particular to a welded shrinkage connection structure and construction technology of the composite structure. Background technique [0002] At present, the concrete in the composite structure has shrinkage and creep, but the connecting key cannot be strained during the shrinkage and creep of the concrete. For example, the flange plate made of a straight steel plate cannot shrink when the concrete shrinks, and it also bears the burden of the concrete shrinkage. The longitudinal compressive stress transmitted at the same time, this patent can change the flange plate and the concrete synergistically, and use the shrinkage effect during welding to make the flange plate have a certain strain shrinkage when the concrete shrinks, reducing the concrete shrinkage cracks and the stress redistribution of the combined structure Phenomenon. Contents of the invention [0003] The invention aims at ...

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Problems solved by technology

[0003] The invention aims at the fact that the flange plate made of straight steel plates in the prior art cannot shrink when the concrete shrinks, and also bears the longitudinal compressive stress transmitted when the concrete shrinks. When the concrete shrinks and creeps after pouring, the steel plate and concrete Shelling occurs, and even leads to cracks in the concrete, which affects the overall structural strength of the combined structure. A method is provided by setting the connecting plate and welding the adjacent flange plates after the concrete is poured to make the welding of the flange plates Shrinkage and concrete creep and shrinkage occur at the same time, reducing the phenomenon of concrete shrinkage cracks and composite structure stress redistribution. The composite structure welded shrinkage connection structure and construction technology

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