SRC shear walls constrained by steel sleeves at the root regions at both ends

Abstract

The invention provides a profile-steel concrete shear wall with two end root areas restrained by steel sleeves. The steel sleeves are respectively arranged on two ends of the shear wall to be close to the root part of profile steel, wherein the steel sleeves form constraint areas for concrete at the bottom at two ends of a wall body, the root part of the profile steel is disposed in the concrete of the constraint area, and the lateral constraint effect improves the limit compressive strength and limit compressive strain of the concrete, so that the integral bending deformation capacity of the shear wall can be improved. The bottom of each steel sleeve stretches into the foundation of the wall body, and the stretching length is about half of the thickness of the wall body, so that the anti-shear capacity of the wall body is improved, and the root part of the wall body is prevented from being damaged due to penetrating shear. The part, stretching into the foundation, of each steel sleeve can be isolated from the peripheral concrete by utilizing oil paper and the like, so that the sleeves are prevented from being pulled, and the deformation capacity of the profile steel at the pulled side is prevented from being influenced. The profile-steel concrete shear wall has the characteristics of convenience in construction, high anti-seismic capacity and low cost, and is particularly applicable to the profile-steel concrete medium-high shear wall with a linear section and with vertical profile steel arranged in a concealed column area at the end of the wall.

Description

technical field [0001] The invention relates to a steel concrete shear wall and belongs to the technical field of structural engineering. Background technique [0002] A shear wall is a wall used to bear vertical loads and lateral loads in a building structure. When flanges or exposed columns are not allowed at the end of the wall, an inline wall section is usually used. Ordinary reinforced concrete medium-high shear walls with straight cross-sections tend to produce oblique cracks in the web area under vertical pressure and horizontal loads, and the crushing and spalling of concrete near the oblique cracks in the web under reciprocating loads lead to brittle failure. The shear failure mode makes Such walls exhibit poor seismic performance. In order to improve the seismic performance of ordinary reinforced concrete walls, concealed steel-concrete columns or concrete-filled steel tube columns are arranged on both sides of the shear walls to form a constraint frame. For mid-...

AI Technical Summary

Problems solved by technology

Ordinary reinforced concrete medium-high shear walls with straight cross-sections tend to produce oblique cracks in the web area under vertical pressure and horizontal loads, and the crushing and spalling of concrete near the oblique cracks in the web under reciprocating loads lead to brittle failure. The shear failure mode makes This type of wall exhibits poor seismic performance

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