长江科学院院报 ›› 2012, Vol. 29 ›› Issue (11): 50-54.DOI: 10.3969/j.issn.1001-5485.2012.11.011

• 岩土工程 • 上一篇    下一篇

水平、弯矩荷载作用下桩基承载特性的离心模型试验研究

文松霖a,柴红涛a,顾 颖b   

  1. 长江科学院 a.水利部岩土力学与工程重点实验室; b.生态修复技术中心,武汉  430010
  • 收稿日期:2011-09-09 修回日期:2011-10-20 出版日期:2012-11-01 发布日期:2012-11-15
  • 作者简介:文松霖(1962-),男,湖南零陵人,教授级高级工程师,博士,主要从事桩基承载机制等方面的研究工作
  • 基金资助:

    国家自然科学基金资助项目(50978034)

Centrifugal Model Test on Resistance Behavior of Pile Foundation Under Horizontal Load and Moment Load

WEN Song-lin1, CHAI Hong-tao1, GU Ying2   

  1. 1. Key Laboratory of Geotechnical Mechanics and Engineering of the MWR, Yangtze River Scientific Research Institute, Wuhan 430010, China;  2. Technology Center of Ecological Restoration, Yangtze River Scientific Research Institute, Wuhan  430010, China
  • Received:2011-09-09 Revised:2011-10-20 Online:2012-11-01 Published:2012-11-15

摘要: 通过几组离心模型试验及成果分析,研究了桩基在水平、弯矩组合荷载作用下的承载机制和承载力屈服包络线特性。结果表明:桩基在水平、弯矩组合荷载作用下承载力屈服包络线形状近似为椭圆形,其承载力屈服包络线方程可用椭圆方程来近似表示;水平、弯矩组合荷载作用下桩基承载力屈服包络线方程为检验桩基在水平、弯矩组合荷载作用下桩基的安全性提供了依据;在桩基设计过程中必须要考虑水平荷载和弯矩荷载之间的相互影响作用。

关键词: 桩基, 离心模型试验, 组合荷载, 承载力, 屈服包络线

Abstract: The load-bearing mechanism and failure envelope behavior of pile foundation under combined horizontal load and moment load were investigated through centrifugal model tests. Analysis on the results revealed that the failure envelope shape of pile foundation under horizontal load and moment load is an ellipse approximately, and the failure envelope equation can be expressed by elliptic equation. The failure envelope, which can be used to inspect the limit instability of pile foundation, provides a basis to inspect the safety of pile foundation under horizontal load and moment load. The interaction between horizontal load and moment load must be considered in the design of pile foundation. 

Key words:  pile foundation, centrifugal model test,  combined load, bearing capacity, failure envelope

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