层状场域内桩-土-上部结构的整体动力有限元模拟  

THE SIMULATION OF INTERACTIVE EFFECT ON PILE-SOIL-STRUCTURE BY WHOLE DYNAMIC FINITE-ELEMENT METHOD IN LAYERED SOIL-FIELD

作　　者：熊辉[1] 邹银生[1] 许振宇 

机构地区：[1]湖南大学土木学院 [2]广州发展北三环高速公路有限公司

出　　处：《土木工程学报》2004年第9期55-61,共7页China Civil Engineering Journal

摘　　要：利用整体动力有限元方法 ,在考虑了模型的边界效应和桩土界面的滑移、接触非线性行为的基础上 ,较全面地研究了层状土域中桩基上下部结构的惯性相互作用和运动相互作用两种基本效应。通过实例计算表明 :土的分层和桩土非线性共同作用可以明显降低体系的动力加速度峰值和层间位移反应 。Inertial and kinematical interaction,the tow basic eff ec t of pile structure in layered soil field,were studied more roundly using the ho listic dynamic finite element method considering boundary effect and nonlinear b ehavior of slippage and contact in interface between soil and pile.It was shown by computed example that the dynamic acceleration peak value and displacement re action in layers of system could be reduced markedly by conjunct action of soil stratifying and nonlinearity of soil-pile,and interaction of rigid body of soil- pile could be affected by soil-pile disjoining or closing much more.

关 键 词：分层土 桩基-结构相互作用 动力有限元 桩-土非线性 

分 类 号：TU473[建筑科学—结构工程]