【摘要】 层状剪切模型箱是土-结动力相互作用振动台试验中的重要设备。针对地下结构非一致地震作用振动台阵试验,设计了能够在相互垂直的两个方向上均满足层间剪切变形的模型箱,并利用自由场振动台试验结果对模型箱性能进行了检验,提出采用2-范数偏差方法对模型箱边界效应进行了定量分析和对比。结果表明,所研制的模型箱性能良好,能够正确模拟原型场地的水平地震动特性,采用2-范数偏差方法能够较好地描述模型箱的边界效应。更多还原

【Abstract】 Laminar shear box is an important facility for shaking table test of soil-structure interaction.Two laminar shear boxes were designed and manufactured in this study to investigate the effect of non-uniform earthquake wave excitation.Each box is so designed that it can move freely in two directions.The performance of the box is checked by free field tests on shaking table.The boundary effect of the box is quantitatively analyzed by 2-Norms deviation index.The result demonstrates that the performance of the box is quite well and it can properly represent the characteristic of prototype ground under earthquake excitation.The proposed 2-Norms deviation is a good factor for boundary effect analysis.更多还原