›› 2012, Vol. 26 ›› Issue (3): 81-83.

• 工程实录 • 上一篇    下一篇

复合地基中桩土面积置换率的理解及应用

张小礼   

  1. (广西水利电力职业技术学院,南宁 530023)
  • 收稿日期:2011-12-25 出版日期:2012-06-20 发布日期:2012-06-25
  • 作者简介:张小礼(1978-),男,甘肃天水人,广西水利电力职业技术学院水利与建筑工程系,讲师,工学硕士,研究方向为岩土工程。

Application of SoilColumn Area Replacement Ratio in the Composite Grounds

ZHANG Xiaoli   

  1. (Guangxi College of Water Resources and Electric Power, Nanning  530023)
  • Received:2011-12-25 Online:2012-06-20 Published:2012-06-25

摘要: 桩土面积置换率就是一根桩的横截面积除以一根桩分担的处理地基的面积,《建筑地基处理技术规范》规定了桩土面积置换率的计算公式,但是只适用于等边三角形、正方形、矩形布桩的情况。当布桩型式不属于以上三种时,就不能通过规范计算出桩土面积置换率。介绍了利用计算简图计算各种布桩形式时的桩土面积置换率的方法。

关键词: 复合地基, 桩土面积置换率, 等效直径

Abstract: "Soil Improvements Specifications for Building Foundations" recommends formulas for the soilcolumn area replacement ratio, but these formulas are only valid for columns with triangular, square, or rectangular distributions. When the column distribution does belong one of the above distributions, the area replacement ratio cannot be calculated from the code recommended formulas. It is understood that the replacement ratio is ratio of cross section of the column and the area of the tributary. The area replacement ratio can be obtained from the graphical solutions.

Key words: Composite ground, Soil-column area replacement ratio, Equivalent diameter