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Numerical Simulation on Seismic Performance of Reinforced Concrete Shear Wall with Irregular Openings(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年03期
Page:
154-164
Research Field:
Publishing date:

Info

Title:
Numerical Simulation on Seismic Performance of Reinforced Concrete Shear Wall with Irregular Openings
Author(s):
LI Zhi1; 2;  XUE Tian-qi2;  ZHU Jie2;  YUAN Xiao-lan2;  ZENG Rong1; 2
(1. Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin University of Technology, Guilin 541004, Guangxi, China; 2. College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, Guangxi, China)
Keywords:
irregular opening;  shear wall;  numerical simulation;  seismic performance;  load-displacement curve
PACS:
TU392
DOI:
10.19815/j.jace.2021.07092
Abstract:
In order to study the seismic performance of shear wall with irregular openings, the seismic test of shear wall with irregular openings was numerical simulated by ABAQUS software, and the finite element model was verified through test results. Based on the validated finite element model, the parameter analysis was carried out to study the influences of shear span ratio, axial compression ratio, opening rate and additional longitudinal reinforcement on the seismic performance of shear walls with irregular openings. The results show that when the axial compression ratio is not considered, the shear wall with large shear span ratio is mainly destroyed in the bottom of flange and wall. The increase of shear span ratio will decrease the peak load and increase ductility of shear wall. With the increase of axial compression ratio, the ductility will be poorer, and the peak load of the shear wall firstly increases and then decreases, and the turning point of the peak load is between 0.2 and 0.5 of axial compression ratio. The peak load and ductility of the shear wall will decrease with the increase of the opening rate. When considering the additional longitudinal reinforcement, the bearing capacity of the shear wall with irregular openings can be estimated as the shear wall without openings if the opening rate is small and meets the basic requirement of the code. The shear wall with irregular openings considering the influence of additional longitudinal reinforcement has better bearing capacity and ductility. The stress concentration is more serious for shear wall with irregular openings without additional longitudinal reinforcement. The weak area appears at the bottom of the shear wall and mainly destroys with shear failure when the opening rate is small. The shear wall is damaged by uncoordinated deformation if the opening rate is large.

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Last Update: 2022-05-30