有限元法和M法在桩土动力相互作用分析中的比较与探讨  

Comparison and disscussion of soil-pile dynamical interaction analysis between FEM and M method

作　　者：张育乐[1] 黄志文[2] 

机构地区：[1]西北电力设计院,陕西西安710000 [2]江西省水利科学研究院,江西南昌330029

出　　处：《江西水利科技》2009年第3期189-192,203,共5页Jiangxi Hydraulic Science & Technology

摘　　要：建立了能反映桩体与土体相对运动和其实际几何尺寸的非线性桩土动力相互作用的分析模型,重点研究了渡槽结构桩土动力相互作用的数值分析方法,并以南水北调中线穿黄河渡槽结构桩土动力相互作用问题为对象,分别采用传统的M法和非线性有限元法进行了数值模拟计算.The numerical method of soil-pile dynamical interaction of large-scale group-piles toundatlons is studied, The model which can display the relative displacement between soil and piles and can consider the real measurement of piles and soil is established. This paper adopts m method and the finite element method （FEM） respectively to simulate the engineering, the results are compared under earthquake load. The results showed that whether the displace of the top of the pier or the stress of the piles, the results of m method is 1-2 times of that of FEM. Although m method is not accurate enough, the m method is safer. Because the m method is simple, efficient and safer, it is feasible to use the m method.

关 键 词：桩土动力相互作用 非线性有限元 M法 

分 类 号：TU435[建筑科学—岩土工程]