轴压比与剪跨比对部分包覆钢-混凝土组合剪力墙抗震性能影响研究

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摘要与传统钢筋混凝土剪力墙相比，部分包覆钢-混凝土组合剪力墙（PEC剪力墙）具有自重小、延性好和施工方便等特点。本文通过低周反复加载试验，探究6个PEC剪力墙试件在不同轴压比和剪跨比下的抗震性能，试验结果表明：PEC剪力墙试件均表现为典型的压弯破坏，滞回曲线较为饱满，耗能性能良好。试件极限层间位移角达1/56，超过罕遇地震下规范限值要求，具有良好的变形能力。随着轴压比的增大，试件的刚度和耗能能力呈先增大后减小的趋势，延性降低明显；随着剪跨比的减小，试件的承载力和刚度有较大幅度提高，但其耗能能力降低、刚度退化速度加快。
关键词：部分包覆钢-混凝土组合剪力墙；轴压比；剪跨比；拟静力试验；抗震性能

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	杨宇焜1
	赫约西1
	2
	蒋路1
	徐国军1
	黄亚男3

关键词 ：部分包覆钢-混凝土组合剪力墙, 轴压比, 剪跨比, 拟静力试验, 抗震性能

Abstract：Partially encased composite (PEC) shear walls possess lower self-weight, higher ductility and more convenient construction than conventional reinforced concrete ones. In this paper, a comprehensive experimental program consisted of 6 specimens was carried out to investigate the seismic behavior of PEC shear walls with different axial compression ratios and shear-span ratios. The test results show that PEC shear walls are the typical compression-bending failure. The hysteretic curves are full, and the energy dissipation capacity is good. The ultimate displacement angle between stories was 1/56, which exceeded the code limit under rare earthquakes, indicating that the prefabricated partially encased composite shear walls have good deformability. With the increase of axial compression ratio, the stiffness and energy dissipation capacity of the specimens show a trend of first increasing and then decreasing, and the ductility decreases significantly. With the decrease of shear-span ratio, the bearing capacity and stiffness of the specimens are rapidly increased, while the energy dissipation capacity of the specimens is decreased and the rate of stiffness degradation is increased.
Keywords: partially encased composite shear wall; axial compression ratio; shear-span ratio; pseudo-static test; seismic performance

Key words： partially encased composite shear wall axial compression ratio shear-span ratio pseudo-static test seismic performance

收稿日期: 2021-08-21 出版日期: 2022-12-15

引用本文:

杨宇焜1,赫约西1,2,蒋路1,徐国军1,黄亚男3. 轴压比与剪跨比对部分包覆钢-混凝土组合剪力墙抗震性能影响研究[J]. 振动与冲击, 2022, 41(23): 265-274.
YANG Yukun1, HE Yuexi1,2, JIANG Lu1, XU Guojun1, HUANG Yanan3. Effects of axial compression ratio and shear span ratio on aseismic performance of PEC shear wall. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 265-274.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I23/265

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