TI层状场地中单桩对入射SH波的响应分析
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摘要
采用横观各向同性(以下简称TI)层状弹性体模型模拟半空间之上的层状场地,用梁单元模拟桩的运动。结合单桩的动力阻抗函数和TI自由场地在入射SH波下的响应,建立了TI层状场地中单桩对入射SH波响应的计算模型。研究了入射SH波作用下单桩沿桩身的剪力和弯距分布,表明场地中单桩在地震作用下也可能破坏,应当引起重视。
A model of transversely isotropic stratified strata is used to simulate the soil layers. At the bottom of the strata,dampers are used to absorb the vibration energy. A pile is embedded in this strata. The method for calculation of the dynamic impedance of single pile is developed. Combining the impedance and the response of the strata to incident SH waves,the response of single pile is obtained. The numerical examples indicate that the maximal moment of pile may cause the pile to fail,and more attention should be paid to the phenomena.
引文
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