利用4片足尺单层单跨页岩烧结保温砌块框架填充墙试件平面外模拟地震试验，研究在El-Centro波、Taft波、天津宁河波及Double El-Centro波等地震波作用下试件反应特点；通过频率、加速度、位移、钢筋应变反应分析填充墙与框架结构间连接构造措施对试件平面外地震反应影响。结果表明，试件墙梁或墙柱刚性连接较柔性连接频率下降慢，加速度放大系数及位移小，试件平面外地震反应小；用两条拉结带试件可明显减小其平面外地震反应。通过综合加权平均法正交分析知，对框架填充墙平面外地震反应影响因素中拉结带数量影响最大，其次为墙梁连接方式，最后为墙柱连接方式。两条拉结带、墙梁及墙柱均采用刚性连接方案试件平面外地震反应最小。
Abstract
Through out-of-plane shaking table experiment of 4 full scale frame infilled walls with shale fired heat-insulation block, the characteristics of the model structure reaction were studied in the El-Centro wave, Taft wave, Tianjing wave and Double El-Centro wave. It was analyzed that the construction measures between the filling wall and frame structure influenced out-of-plane seismic response of model structure by frequency, acceleration, relative displacement and rebar strain response. The results showed that frequency of the specimen for wall-beam or wall-column rigid connection fall slower than flexible connection, meanwhile the acceleration amplification coefficient and relative displacement are smaller, and using two binding belts can obviously reduce the out-of-plane seismic response of model structure. By synthetic weighted mark method, in the factors of out-of-plane seismic response for the frame infilled walls, firstly is the quantity of binding belts, secondly is the wall-beam connection, finally is the wall-column connection.
关键词
页岩烧结保温砌块 /
框架填充墙 /
振动台试验 /
平面外地震反应 /
刚性连接 /
柔性连接
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Key words
shale fired heat-insulation block /
frame infilled wall /
shaking table experiment /
out-of-plane seismic response /
rigid connection /
flexible connection
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