Tests for vertical tension and horizontal hysteretic load of assembled steel
ZHOU Jing1,2, LI Peng1
1.College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China;
2.State Key Laboratory of Subtropical Architecture Science, South China University of Technology, Guangzhou 510640, China
Abstract：Quasi-static tests of 6 assembled concrete-filled steel tube (CFST) composite shear wall specimens with shear span ratio of 1.62 were conducted to study effects of CFST core column content ratio, out of plane eccentricity and initial axial tension on the aseismic performance of assembled composite shear walls. Failure characteristics, hysteretic performance, deformation and ductility, load-bearing capacity, stiffness degradation and energy consumption of specimens were analyzed.The results showed that the overall failure mode of assembled composite shear wall specimens is bending-shear composite failure, they still have higher load-bearing capacity under the combined action of vertical tension and horizontal bending-shear hysteresis, the hysteretic curve is full, deformation and energy consumption are better, and their residual stiffness is large during failure; the shear deformation component is linearly related to the total deformation, it is about 21% of the total displacement; the average ultimate displacement angle of specimens is 1/42, their average ductility coefficient is 5.0, so the assembly integrity of composite shear walls is good; their shear-bearing capacity increases with increase in concrete-filled steel tube content ratio, while their deformation curvature decreases; their shear-bearing capacity decreases with increase in initial axial tension and out of plane eccentricity, the appropriate axial tension can increase the cross-section deformation capacity, but the out of plane eccentricity is unfavorable to deformation.
周靖1,2，李鹏1. 装配式钢套管混凝土组合剪力墙竖向受拉-水平滞回荷载试验研究[J]. 振动与冲击, 2021, 40(11): 48-57.
ZHOU Jing1,2, LI Peng1. Tests for vertical tension and horizontal hysteretic load of assembled steel. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(11): 48-57.
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