框架——桩筏基础空间共同作用机理

将上部结构、基础与地基三者视为统一整体，上部结构考虑空间框架形式，筏板计算采用亨奇中厚板８节点等参数单元，桩土体系采用剪切位移法，考虑群桩效应进行共同作用的空间分析并编制了相应的程序。采用的方法是一种空间分析方法，可推广到框筒及框－剪结构的空间分析，在求解时利用波前法使得效率极大提高，所编制程序具有一定通用性，适用于工程实践。

Spatial Analysis of Space Frame-Pile/Raft-Foundation-Soil Mass Interaction

The paper presents a novel modeling of super-structure-pile/raft-soil mass system.The superstructure members have been represented by means oftvvo-node space beam elements with six degrees of freedom per node which, take into account the effect of axial-flexural interaction.The plate bending element with three degrees of freedem per node l;as been employed to represent the raft.The pile vertexes flexural matrix can be obtained if pile-soil me .system is analyzed by shearing uisplaoment method.The interaction equation and the miversal program of the whole system were established,which makes it possible to accomplish the spatial analysis of the superstruarture-pile/rafu foundation-soil mass intciaction.