地震荷载下桩土相互作用简化计算方法及参数分析  

Simplified method and parametric analysis for pile-soil dynamic interaction under seismic loading

作　　者：肖晓春[1] 迟世春[1] 林皋[1] 约翰.艾法罗 

机构地区：[1]大连理工大学土木工程系,辽宁大连116024 [2]康乃尔大学土木与环境工程系,纽约伊萨卡10543

出　　处：《大连理工大学学报》2002年第6期719-723,共5页Journal of Dalian University of Technology

基　　金：海岸与近海工程国家重点实验室资助项目(9907).

摘　　要：针对水平地震荷载下桩土相互作用体系,建立了简化计算模型.与有限元分析结果对比验证了简化模型的有效性,并运用此模型就桩土弹模比、地震动输入以及桩的几何特性进行了参数敏感性分析.对计算结果的统计分析表明,桩土弹模比对桩土动力相互作用的影响较为显著.A simplified model for pile\|soil dynamic interaction under seismic loading is presented. The validity of the simplified model is calibrated by comparing the calculations with FEM results. Multiple factors and levels parametric sensitivity analysis of pile\|soil system are conducted. Among these factors, pile soil stiffness ratio, pile slenderness ratio and earthquake design level are taken into consideration. The calculation results indicate that the pile soil stiffness ratio is the most sensitive one among three factors.

关 键 词：地震工程 正交试验 桩土相互作用 时域分析 参数分析 

分 类 号：TU473.1[建筑科学—结构工程]