摘要
在有限元分析的基础上,采用三维Mohr-Coulomb非线性弹塑性模型对嵌岩方桩垂直荷载作用下的承载性状做了较全面的探讨。计算结果表明,随着嵌岩深度的增加,嵌岩方桩的极限承载力也逐渐增加,当嵌岩深度超过h/B=3.0后,方桩的承载力变化不大。随着嵌岩桩岩石弹性模量和内摩擦角的增大,嵌岩方桩的极限承载力也随之增加。文中结论可为方形桩基工程的科研、设计和施工提供参考。
Based on finite element analysis, this thesis makes a comprehensive study on the bearing capacity of square rock-socketed piles under vertical load using the three dimensional non-linear elastic-plastic Mohr-Coulomb models. The result shows that the bearing capacity of square rock-socketed piles increases while rock-socketed length, elastic modulus of rock and friction angle of rock increase. But when rock-socketed length more than h/B = 3.0, the continued increase of rock-socketed length has little effect on improving the bearing capacity of square rock-socketed piles. These conclusions can be used as a reference in research, design and construction of square pile foundation.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第A02期1597-1601,共5页
Chinese Journal of Underground Space and Engineering
关键词
嵌岩桩
方桩
竖向承载力
有限元
rock-socketed pile
square pile
vertical bearing capacity
finite element
