两边连接暗支撑预制墙板抗震性能分析

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摘要本文提出了一种适用于多、高层装配式钢框架结构的两边连接暗支撑预制墙板，并对6个2/3缩尺的暗支撑预制墙板试件进行低周往复循环水平剪力加载试验，分析了几种典型的破坏模型，并对不同试件的抗剪承载力、延性和耗能能力进行研究。试验结果表明：暗支撑预制墙板具有良好的延性和耗能能力，减小剪跨比、增大墙厚能有效提高预制墙板抗剪承载力，但其峰值位移会降低至原来的1/2；设置暗柱构有效提高预制墙板抗剪承载力；试件的上部连接、T型件与暗支撑骨架下部焊缝为薄弱位置，应对其局部加强，上部连接宜采用长圆孔构造，防止螺栓剪切破坏。有限元参数化分析的结果表明：提高混凝土强度，对预制墙板的峰值荷载影响较小，但采用C30以上混凝土能有效提高屈服荷载；当钢支撑用钢量相同时，相较于增大其截面厚度，增大截面宽度对墙板抗剪承载力提升更为显著。

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	李彬1
	王湛1
	2
	王鹏2
	3
	潘建荣1
	2
	范延静1
	覃健桂1

关键词 ：两边连接预制墙板, 暗支撑, 拟静力试验, 有限元分析, 抗震性能

Abstract：A beam-connected prefabricated wall with concealed brace was proposed for precast steel frame structures. Six 2/3-scale prefabricated walls with concealed brace were designed to be tested under horizontal shear cyclic loading, respectively. Several typical failure modes, the shear capacity, ductility, and energy dissipation capacity of specimens were investigated. The test results show that the prefabricated wall with concealed brace has excellent ductility and energy dissipation capacity. Reducing the shear-span ratio and increasing the thickness of prefabricated wall can effectively increase its shear capacity, but the peak displacement will be reduced to 1/2 of the original. The concealed column can effectively improve the shear capacity. The lower weld of the bottom T-stub and the skeleton should be strengthened, and the upper connection should be set as slotted holes to prevent bolt shear failure. The finite element software ABAQUS was used to analyze the experimental model. The parametric analysis results of prefabricated wall with concealed brace was carried out. The analysis show that increasing the strength of concrete has little effect on the peak load of prefabricated wall, but when the strength of concrete used is above C30, it can effectively increase the yield load. When the weight of concealed brace is the same, increasing the section width is a more efficient way of improving the shear capacity of prefabricated wall.

Key words： beam-connected prefabricated wall concealed brace quasi-static test numerical simulation seismic performance

收稿日期: 2021-01-20 出版日期: 2022-05-15

引用本文:

李彬1，王湛1,2，王鹏2,3，潘建荣1,2，范延静1，覃健桂1. 两边连接暗支撑预制墙板抗震性能分析[J]. 振动与冲击, 2022, 41(9): 9-17.
LI Bin1, WANG Zhan1,2, WANG Peng2,3, PAN Jianrong1,2, FAN Yanjing1, QIN Jiangui1. Aseismic performance analysis of prefabricated wallboard with concealed braces connected on both sides. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(9): 9-17.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I9/9

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