摘要
为研究刚性桩复合地基的承载机理,利用有限元程序,对刚性桩复合地基在竖向荷载下的轴力、沉降特性进行了计算分析,着重讨论了桩身轴力、基础沉降等随垫层厚度、垫层模量、桩长、土体模量及桩间距等因素变化的规律,并在此基础上对刚性桩复合地基设计参数的选取原则进行了讨论。
The rigid pile composite foundation consists of the raft, the piles, the foundation soil and the cushion between the raft and the piles. Research on the rigid pile composite foundation is at present still inadequate, and the knowledge on its working mechanism is quite limited. In this paper, the working performance of rigid pile composite foundation was analyzed by using the finite element method. Factors influencing axial stress of piles and settlements of rigid pile composite foundation under vertical load were studied. The influence factors include cushion thickness, cushion modulus, pile length, soil modulus, pile spacing, etc. The design principles of composite foundation are proposed.
出处
《工程力学》
EI
CSCD
北大核心
2003年第4期9-14,共6页
Engineering Mechanics
基金
北京市自然科学基金资助项目(8982011)
关键词
刚性桩复合地基
沉降
有限元
Bearing capacity
Composite structures
Finite element method
Piles
Settlement of structures
Soils
