土工基础

›› 2016, Vol. 30 ›› Issue (6): 718-720.

• 工程实录 • 上一篇    下一篇

地基承载力特征值的试验确定法分析

赵  翀，李  键，太  俊   

  1. （天津市市政工程设计研究院岩土勘察分院，天津 300051）
  • 收稿日期:2016-01-07 修回日期:2016-01-19 出版日期:2016-12-20 发布日期:2016-12-22
  • 作者简介:赵 翀（1988-），男，硕士研究生，研究方向为岩土勘察、设计。

The Study of the Bearing Capacity of the Foundation Soils

ZHAO Chong, LI Jian, TAI Jun   

  1. (Division of Geotechnical Investigations, Tianjin Municipal Engineering Design & Research Institute, Tianjin 300051)
  • Received:2016-01-07 Revised:2016-01-19 Online:2016-12-20 Published:2016-12-22

摘要： 对“苏州轨道交通3号线”某车站内各个不同地基土层采用不同试验法确定其地基承载力特征值，研究不同试验方法条件下地基土地基承载力特征值的差异。试验表明，采用物理力学指标、旁压试验、螺旋板载荷试验、静力触探试验来确定地基承载力特征值得出的结果是不同的，且不同试验方法得出的结果试验数据差异较大；物理力学指标法和静力触探试验法确定的地基承载力特征值普遍偏大；旁压试验和螺旋板试验得出的地基承载力特征值更接近工程实际。

关键词: 地基承载力特征值, 地基土, 螺旋板试验, 旁压试验

Abstract: In order to determine the bearing capacity of the foundation soils, different test methods were applied to different layers of soil strata in a train station of No. 3 Line of Suzhou Transit Project. The following testing methods were applied: laboratory testing of index and mechanical properties; pressuremeter tests; screw plate loading tests and cone penetration tests. The differences of the bearing capacity value obtained from different testing methods are compared. The results indicates that the bearing capacity values from these testing methods vary significantly. Usually, higher bearing capacity values can be obtained from laboratory test and cone penetration test; whereas, the bearing capacity values obtained from the pressuremeter test and screw plate loading test are more close the values used in the design.

Key words: Bearing Capacity Values, Foundation Soils, Screw Plate Loading Tests, Pressuremeter Tests