摘要
在双排桩支护结构中,尺寸效应(文中主要考虑桩距和开挖宽度)是一个需要考虑的重要因素．为此．采用有限元程序ABAQUS建立双排桩支护结构的有限元模型,以接触面的形式考虑了桩土的相互作用,分析了深基坑开挖中双排桩的桩距和开挖宽度等对双排桩支护结构的影响,并且比较了同等桩距条件下的双排桩和单排桩．研究结果表明,比较合理的桩距为(2～2．5)d(d为桩径),基坑的开挖宽度对支护结构内力和变形的影响不可忽略．
The dimensional effect （ the pile distance and the width of excavation are the main points of this paper） is an important factor for the double-row piles retaining structure. Based on the finite element program ABAQUS, finite element model of the double-row piles was established. By treating the pile-soil interaction as the contact surface, the pile distance and the width of excavation were considered in the deep excavation. The differences between the double-row piles and the single-row piles were compared with the same pile distance. It is found that the pile distance should be set as 2-2.5 times the diameter of the pile, and the influence of width of excavation is remarkable to the internal force and the deformation.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2006年第8期963-967,共5页
Journal of Tianjin University(Science and Technology)
关键词
双排桩
尺寸效应
接触面
桩土相互作用
修正剑桥模型
double-row piles
dimensional effect
contact surface
pile-soil interaction
modified clay plasticity model
