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《Chinese Journal of Underground Space and Engineering》 2012-03
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Numerical Simulation Analysis of a New Pressured Multi-Branch Bored Pile

Zhang Mingyi1,Kou Hailei1,Bai Xiaoyu1,Zhao Yingqun2(1.College of Civil Engineering,Qingdao Technological University,Qingdao 266033,China;2.Rail Transit Co.,Ltd.Zhengzhou,Zhengzhou 450000,China)  
The pressured multi-branch bored pile is a new pile type improved on the basis of squeezed branch reaming pile with a new pile technology which possesses many advantages of the jacked pile,driven cast-in-place pile,enlarged toe pile and multi-branch bored pile.The pressured multi-branch bored pile has advantages of high bearing capacity,small settlement and cost-effective.The ANSYS finite element analysis software is used to simulate the properties of pressured double-branch pile on the vertical load and obtain the change of the shaft resistance and tip resistance of pile under the vertical load.The multi-pivot friction and end-bearing pile is made up of pile branches,so the bearing branches mainly bear the vertical load and the force of the above branch is greater than that of the below one.The recommended value of branch vertical critical spacing and the pile minimum spacing of pressured branch pile is proposed in this paper.
【Fund】: 山东省自然科学基金资助项目(NO.50678086)
【CateGory Index】: TU473.1
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