摘要
基于非线性有限元计算,分析了桩的尺寸效应对嵌岩桩承载性状的影响。结果表明:在其他条件一定时,随着桩径的增加,嵌岩深径比减小,桩的承载力有增大的趋势,其主要原因是增强了桩端承载力;另一方面,嵌岩深度也对桩的承载性状有影响,桩嵌入深度越短,桩端承担的荷载就越大。设计时可适当考虑通过增大桩径的办法来提高桩的承载力。
Based on nonlinear finite element calculation, the influence of size effect of pile on load-bearing behaviour of rock-socketed pile is analyzed. The results show that the rock-socketed depth-diameter ratio decreases with increasing diameter of pile while other conditions are invariable, bearing capacity of pile takes on increscent trend due to chiefly bearing pressure of pile tip enhancing. Additionally, socketed depth influences the bearing properties, the shorter socketed depth, the more strength load-bearing of pile tip. So the bearing capacity can be enchanced by enlarging pile diameter in course of design.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第6期1221-1224,共4页
Rock and Soil Mechanics
关键词
嵌岩桩
承载性状
尺寸效应
有限元
rock-socketed pile
load-bearing behaviour
size effect
finite element method
