Batten plate constraint type I-shaped steel bone confined concrete column and fabrication method thereof

Abstract

The invention relates to a steel bone concrete column, and particularly relates to a batten plate constraint type I-shaped steel bone confined concrete column. The batten plate constraint type I-shaped steel bone confined concrete column disclosed by the invention comprises an I-shaped steel bone, constraint batten plates, longitudinal reinforcement, a composite stirrup and concrete, wherein the constraint batten plates are respectively welded and connected with two flanges, at the free edges of the flanges, of the I-shaped steel bone in a sectioning manner, so that the free extension length of each flange is effectively reduced, buckling deformation of the flanges is constrained, and meanwhile, the inspection capability of internal concrete of the steel bone is enhanced by existence of the constraint batten plates. The constraint batten plates are arranged at intervals, and the internal part of the steel bone is communicated with external concrete in series, so that the pouring quality of the concrete is ensured. Therefore, the concrete disclosed by the invention has the relatively high strength and the good elastic-plastic deformation capacity, and the formed steel bone concrete column has the relatively high bearing capacity, ductility and energy-dissipating capacity.

Description

technical field [0001] The invention relates to an I-shaped steel-frame-constrained concrete column and a method thereof, which are mainly used in the field of anti-seismic energy consumption in building structures. Background technique [0002] Steel-reinforced concrete structure refers to a composite structure system in which steel reinforcement is arranged in an ordinary reinforced concrete structure. In the steel reinforced concrete structure, the steel frame can be divided into two types: solid belly type and hollow type. The solid-web steel-reinforced concrete members have better seismic performance, while the seismic performance of the empty-web steel-reinforced concrete members is basically the same as that of ordinary reinforced concrete members. Therefore, at present, solid-web steel-reinforced concrete members are mostly used in earthquake-resistant structures. The solid-belly steel frame can be assembled by welding steel plates or directly using rolled steel. ...

AI Technical Summary

Problems solved by technology

Experimental research shows that when there is a large deformation in the later stage of loading, due to the large free extension length of the steel frame flange of the built-in steel concrete column with I-shaped steel frame, when the width-to-thickness ratio is large, a certain buckling deformation will occur, and the steel frame will not affect the load. The restraining capacity of concrete decreases, and then the bearing capacity of the entire steel concrete column decreases

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