Prefabricated steel-encased concrete column and concrete beam joint and construction process

Abstract

The invention discloses a prefabricated steel-encased concrete column and concrete beam joint and a construction process. The prefabricated steel-encased concrete column and concrete beam joint is divided into three forms, the first form is composed of a prefabricated steel-encased concrete column, a prefabricated reinforced concrete beam pre-buried in the column and a prefabricated reinforced concrete beam; the second form is composed of a prefabricated steel-encased concrete column, a prefabricated steel-encased concrete beam pre-buried in the column and a prefabricated steel-encased concrete beam; the third form is composed of a prefabricated steel-encased concrete column and a prefabricated reinforced concrete beam; and in order to overcome the defect of insufficient bearing capacity of a fabricated frame structure column, the steel-encased concrete column is adopted to replace a common reinforced concrete column. According to the steel-encased structure, loads of components and the structure are basically not increased, an originally designed structure system and a stress form are not changed, on one hand, the steel-encased reinforcement supplements the defects of steel bars of the original components and effectively improves the bearing capacity of the original components, on the other hand, through large-area steel plate adhesion, concrete of the original components is effectively protected, crack development is limited, and the rigidity and the crack resistance of the original components are improved.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to prefabricated steel-clad concrete columns and concrete beam joints and construction techniques. Background technique [0002] At present, most of the building structures in my country are traditional cast-in-place concrete structures. The construction procedures of cast-in-place concrete structures are complicated, the construction period is long, and the seismic performance and ductility are poor. In the case of large-volume concrete or poor maintenance, it is easy to cause large-area structures Cracking is restricted by factors such as construction space, climatic conditions, and environmental protection. Practice has proved that the ductility and bearing capacity of the columns seriously affect the seismic performance of the prefabricated frame structure, and there are disadvantages in the prefabricated frame structure such as poor column bearing capacit...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the building structures in my country are traditional cast-in-place concrete structures. The construction procedures of cast-in-place concrete structures are complicated, the construction period is long, and the seismic performance and ductility are poor. In the case of large-volume concrete or poor maintenance, it is easy to cause large-area structures Cracking and restricted by construction space, climate conditions, environmental protection and other factors

Practice has proved that the quality of column ductility and bearing capacity seriously affects the seismic performance of prefabricated frame structures, and there are disadvantages in prefabricated frame structures such as poor column bearing capacity and integrity, insufficient seismic capacity of nodes, and complicated construction procedures.

Moreover, in most prefabricated frame structures, the connection between beams and columns is mainly through the use of mechanical sleeves, welded connections or wet connections. indirect

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