(1. College of Architecture and Civil Engineering，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China； 2. School of Engineering and Technology，Haikou College of Economics，Haikou，Hainan 571127，China；3. Department of Civil Engineering，North China Institute of Science and Technology，Beijing 101601，China)
Abstract：Reference on lateral load test and numerical simulation of large diameter pipe pile by using cast-in-place concrete(PCC)，finite element model of a single pile with or without pile partner under lateral load is established. Comparison calculations show that pile partner can ensure lateral loads delivering from pile cap to foundation soil，and double reduce stress and displacement of pile. Pile partner can also make some improvement on lateral bearing characters for the pile foundation with low cap even though the modulus of foundation soil is small. When pile partner is equipped，and the connection mode between pile cap and pile changing from rigid connection to hinge joint，pile body internal force can also be drastically reduced；and pile and pile caps by distance can only be considered to meet the requirement of vertical bearing capacity or optimization design of pile foundation stiffness to reduce differential settlement. Pillow is not necessary and can be cancelled in composite foundation when pile partner is applied. The height of pile partner has little influence on internal force and displacement of pile. Under rare earthquake action，pile partner may sacrifice firstly to keep pile perform well.
薛江炜1，2，葛忻声1，杨 勇1，蔡景珞1，3. 水平静力荷载作用下桩伴侣工作性状有限元模拟及与无伴侣构造形式的比较分析[J]. 岩石力学与工程学报, 2013, 32(s2): 4073-4081.
XUE Jiangwei1，2，GE Xinsheng1，YANG Yong1，CAI Jingluo1，3. FINITE ELEMENT ANALYSIS OF COMPARATIVE PERFORMANCE OF LATERALLY LOADED PILE WITH OR WITHOUT PARTNER. , 2013, 32(s2): 4073-4081.
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2013, Vol. 32 
