Bottom steel bar connecting structure of key groove node precast frame beam

Abstract

The invention discloses a bottom steel bar connecting structure of a key groove node precast frame beam. The bottom steel bar connecting structure comprises precast beams and precast columns. The precast beams are erected on the precast columns, key grooves are formed in the precast beams in the node region, cast-in-place layers are cast in the key grooves, cast-in-place layer steel bars are arranged in the cast-in-place layers, the cast-in-place steel bars are anchored into the precast columns, the precast beams and the precast columns are connected into a whole through the cast-in-place layers, and bottom longitudinal bars of the precast beams are anchored into the precast columns in the node region. Compared with the prior art, the bottom steel bar connecting structure of the key groove node precast frame beam has the advantages that the problem that connection of bottom longitudinal bars of precast beams in the node region of a scope system does not meet the standard requirement is solved and the problems that manufacturing of components of a Ruentex system are complicated and construction of the node region is difficult are also avoided.

Description

technical field [0001] The invention belongs to the field of engineering construction, and relates to the improvement of the steel bar connection structure at the bottom of the prefabricated frame beam at the junction of beams and columns, in particular to a bottom steel bar connection structure of the prefabricated frame beam at keyway joints. Background technique [0002] The key to the prefabricated integrated frame structure is: how to effectively connect the prefabricated beams, prefabricated panels, prefabricated columns and other components produced in the factory to form an integral structural system after being hoisted on site. The ease of installation and the quality of concrete pouring in the connection node area will directly affect the construction progress and quality of the project. Therefore, on the premise of ensuring the safety of the structure, it is an urgent problem to be solved in the engineering field to find a connection method of the prefabricated mo...

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Problems solved by technology

[0006] The above-mentioned problems to be solved by the present invention are aimed at the problems in the above-mentioned prior art: the longitudinal reinforcement at the bottom of the prefabricated beam of the world structure system does not penetrate the prefabricated column and affects the connection strength; And provide a bottom longitudinal reinforcement of prefabricated beams through, the connection strength meets the requirements, the prefabricated parts are simple to manufacture, and the joint construction is convenient. The bottom steel bar connection structure of the prefabricated frame beam with keyway joints

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