摘要
通过现场试验对水平激振下层状地基中混凝土波阻板的实际隔振效果及波阻板埋深对隔振效果的影响进行了研究,并将实测位移振幅随距离变化曲线与以薄层法格林函数作为基本解的半解析边界元计算结果进行了比较。研究结果表明,水平激振情况下,具有合理埋深的混凝土波阻板可以有效减少振动输出,获得理想的隔振效果;减小波阻板埋深是提高隔振效果的一项有效措施;半解析边界元法的计算结果与实测结果较为一致,证明了该数值方法的可靠性。
In this paper, an investigation was addressed to evaluate the actual vibration isolation effect of concrete wave impeding block （ WIB ） and the influence of WIB embedded depth on the vibration screening effect in different directions under the continuous horizontal loading. Furthermore, the displacement of measuring points were predicted with a semi - analytical boundary element method （ BEM ） and validated by the measured records. It was revealed that a concrete WIB with a reasonable embedded depth was able to decrease the output of vibration effectively. It was also found that decreasing the embedded depth is an efficient measure for WIB to reduce the ground motion. Besides, the good consistency between the simulation and the observed data proved the reliability of the numerical method.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第1期90-95,共6页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金资助项目(50878155
50678128
50538010)
上海市重点学科建设资助项目(B308)
关键词
波阻板
埋深
隔振
现场试验
半解析边界元法
wave impeding block
embedded depth
vibration isolation
field experiment
semi -analytical boundary element method
