土工基础

›› 2011, Vol. 25 ›› Issue (2): 65-.

• 工程实录 • 上一篇    下一篇

水平荷载作用下软土地基上桶形基础承载力分析

李华銮   

  1. (山东大学土建与水利学院，济南 250061)
  • 收稿日期:2010-07-18 出版日期:2011-04-20 发布日期:2012-01-13
  • 作者简介:李华銮,男,1959年生,学士,主要从事岩土工程教学、试验等方面的研究。

Analysis on Bearing Capacity of Bucket Foundation in Soft Soil Ground under Horizontal Load

LI  Hua  luan   

  1. (College of Civil Engineering and Water Resources, Shandong University, Jinan  250061, China)
  • Received:2010-07-18 Online:2011-04-20 Published:2012-01-13

摘要： 桶形基础作为一种新型基础形式是近几年国际上出现的海洋石油开发的先进技术。采用ABAQUS大型有限元程序和极限平衡理论，运用位移控制法，通过三维有限元的数值模拟，对土性参数、桶体的高径比对桶形基础水平承载力、桶体外侧土压力分布规律的影响进行了研究。结果表明，桶形基础在水平荷载作用下产生以距桶体底部1/3处为中心的旋转，并且对应于此处的桶体外侧土压力最大；土性参数对水平承载力影响较小，而桶体的高径比对水平承载力影响较大。

Abstract: The bucket foundation is an advanced technology in coastal and offshore engineering recently. The three\|dimension finite element model of bucket foundation was established by using the finite element analysis software ABAQUS and the limit equilibrium theory. The horizontal bearing capacity of bucket foundation and the distributions of earth pressure along outside of bucket foundation under horizontal load were studied by using the displacement controlled method, in which some factors were considered such as soil characteristics and length to diameter ratio of bucket foundation. Results show that the bucket foundation rotates with the center of one\|third bucket length to the bottom, meanwhile the earth pressure is maximum outside of the bucket at this point. And the influence of soil characteristics is not greater than that of length to diameter ratio on the horizontal bearing capacity of bucket foundation.