| 刚柔长短桩复合地基模型实验研究 |
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| 引用本文： | 孔德志,雷艳杰,位俊俊.刚柔长短桩复合地基模型实验研究[J].河南大学学报(自然科学版),2012(5):654-657. |
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| 作者姓名： | 孔德志 雷艳杰 位俊俊 |
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| 作者单位： | 河南大学材料与结构研究所;郑州市马寨工业园区管委会 |
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| 基金项目： | 河南省青年骨干教师计划资助项目 |
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| 摘 要： | 对由四根水泥土短桩和一根混凝土长桩组成的复合地基模型进行了实验研究.分析了复合地基的荷载与沉降关系、桩身应力和桩间土应力变化情况,认为在弹性阶段刚柔桩和桩间土共同分担荷载,在塑性阶段柔性桩能够将荷载传递到更深的深度.由于短桩的端阻力作用,长桩在相应位置将出现负摩阻力,桩间土应力将出现两个峰值点.
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| 关 键 词： | 复合地基 桩身应力 桩间土应力 负摩阻力 |
Study by Test for Complex Ground Constituted of Different Rigid and Length Piles |
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| KONG De-zhi,LEI Yan-jie,WEI Jun-jun.Study by Test for Complex Ground Constituted of Different Rigid and Length Piles[J].Journal of Henan University(Natural Science),2012(5):654-657. |
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| Authors: | KONG De-zhi LEI Yan-jie WEI Jun-jun |
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| Institution: | 1(1.Institute of Material and Structure,Henan University,Kaifeng 475004,China; 2.Administrative Committee of Mazhai Industrial Park of Zhengzhou,Zhengzhou 450064,China) |
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| Abstract: | In this paper,the complex ground composed of one concrete pile and four cementing-soil piles has been tested and studied.The relation between load and settlement,stress of piles,stress of soil among the piles have been tested and analyzed.It is indicated that the piles and soil bear the load together in the elastic phase,the flexible pile can transfer the load to more deep in plastic phase.Because of the tip resistance of short piles,the negative friction appeared at the relevant location in the long pile,and the stress of soil among piles has two peak values. |
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| Keywords: | complex ground stress of pile stress of soil among piles negative friction |
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