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带钢板耗能键的钢管混凝土排柱组合剪力墙抗震性能研究*
魏华,吕丛丛,王海军
摘 要

(沈阳工业大学建筑工程学院, 沈阳 110870)

[摘要]采用ABAQUS软件,建立4个带钢板耗能键的钢管混凝土排柱组合剪力墙模型,在验证建模方法可靠的基础上,对不同试件进行低周反复荷载下滞回特性、耗能能力、骨架曲线、延性、强度退化及刚度退化的对比研究,得出试件骨架曲线、滞回曲线,计算出承载力和位移延性系数,并分析剪跨比、钢管套箍率、材料强度等级三个不同参数对组合剪力墙的影响。结果表明,该组合剪力墙的承载力高、耗能能力强、后期刚度稳定、抗震性能良好;组合结构的承载力、耗能能力均随钢板数量增加而提高,但延性下降,外包混凝土能够大大提高结构的承载力和耗能能力;随剪跨比的增大,组合剪力墙承载力下降,但变形能力增强;随钢管套箍率增大,组合剪力墙的承载力和延性系数比增大,钢管套箍率宜取1-01;钢管内部的混凝土对整体结构强度影响的效果不明显。

[关键词]钢板耗能键; 钢管混凝土排柱; 骨架曲线; 滞回曲线; 耗能能力

中图分类号:TU398+.2文献标识码:A文章编号:1002-848X(2017)07-0057-06

 

Study on seismic performance of composite shear walls and concrete filled steel tube columns in row with steel plate energy-dissipated bonds

Wei Hua, Lü Congcong, Wang Haijun

(Institute of Civil Engineering, Shenyang University of Technology, Shenyang 110870, China)

Abstract:Four models of composite shear walls and concrete filled steel tube columns in row with steel plate energy-dissipated bonds were established by ABAQUS finite element analysis software. The hysteretic characteristics, energy dissipation capacity, skeleton curve, ductility, strength degradation and stiffness degradation of different specimens under low cyclic loading were compared and studied on the basis of reliable and verificated modeling methods. The skeleton curve and hysteretic curve were obtained, and the bearing capacity and displacement ductility ratio were calculated. The effects of shear span ratio, steel ferrule rate  and material strength grade on composite shear walls were analyzed. Results show that the composite wall has high bearing capacity, energy dissipation capacity,  stable later-stage stiffness and good seismic performance. With the increase of steel plate number, the bearing capacity and energy dissipation capacity of the structure are improved, but the ductility decreases, and the encased concrete can greatly improve the bearing capacity and energy dissipation capacity of the structure. With the increase of shear span ratio, the bearing capacity of the composite shear wall declines, but the deformation capacity enhances. With the increase of steel ferrule rate, bearing capacity and ductility ratio increase, and the steel ferrule rate has the appropriate value of 1-01. Effect of the concrete inside the steel tube on the overall structural strength is not obvious.

Keywords:steel plate energy-dissipated bond; concrete filled steel tube columns in row; skeleton curve; hysteresis curve; energy dissipation capacity

 

*沈阳市科技计划项目(F13-316-1-43)。

 

作者简介:魏华,博士,副教授,Email: wang_navy@hotmail.com。

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