瑞利波作用下考虑桩土相互作用的单桩竖向动力响应计算研究  

COMPUTATIONAL RESEARCH ON VERTICAL DYNAMIC RESPONSE OF SINGLE-PILE CONSIDERING PILE-SOIL INTERACTION DURING PASSAGE OF RAYLEIGH WAVES

作　　者：王海东[1] 尚守平[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《工程力学》2006年第8期74-78,共5页Engineering Mechanics

基　　金：国家自然科学基金资助(50278033);教育部科学技术研究重点项目(重点03122)

摘　　要：在前人对瑞利波作用下考虑桩土相互作用的单桩动力响应简化算法研究的基础上,将采用Novak薄层法计算地基土动力阻抗的方法引入到该领域的研究中,得到了单桩竖向动力响应的计算公式。在此计算公式的基础上分析了长径比、桩土刚度比、地基土的泊松比对单桩竖向响应的影响,并与原简化公式的结果进行了对比。On the basis of the research of simple analytical computation on vertical dynamic response of single-pile during the passage of Rayleigh waves, Novak layer method which is applied to compute the dynamic impedance of soil is introduced to analyze the vertical dynamic pile-soil interaction. The computing formula of vertical dynamic response of single-pile is obtained. Based on the computing formula, the effect of pile length, stiffness ratio of pile to soil, Poisson＇s ratio on vertical dynamic response of single-pile during the passage of Rayleigh waves is studied. Furthermore, the comparison between the results of the formula of this paper and that of the old simple method is made.

关 键 词：瑞利波 桩土相互作用 Novak薄层法 阻抗 动力响应 

分 类 号：TU435[建筑科学—岩土工程]