土工基础

›› 2018, Vol. 32 ›› Issue (3): 335-337.

• 工程实录 • 上一篇    下一篇

厦门花岗岩风化残积土物性指标与压缩特性研究

许黎明   

  1. （厦门轨道交通集团有限公司,福建厦门 361000）
  • 收稿日期:2018-03-16 修回日期:2018-03-21 出版日期:2018-06-22 发布日期:2018-06-26
  • 作者简介:许黎明（1962-），男，高级工程师，研究方向为城市轨道交通建设管理与技术。

Index and Compressibility Properties of Xiamen Completely Weathered Granitic Residual Soils

XU Liming   

  1. (Xiamen Rail Transit Group Co., Ltd., Xiamen 361000)
  • Received:2018-03-16 Revised:2018-03-21 Online:2018-06-22 Published:2018-06-26

摘要： 对厦门市地铁某站点基坑的未扰动原状土土工试验数据的统计规律进行分析，并结合传统的回归分析方法研究了该地区花岗岩风化土层物性指标（含水率、孔隙比与天然密度）与变形指标之间的相关关系，给出了指标之间的关系式及相关系数，并从花岗岩残积土的属性对结果进行了评价与解析；研究表明，采用常规物性指标预估压缩系数具有一定的可靠性，但仍需考虑花岗岩残积土的结构强度对压缩系数的影响。研究成果可为花岗岩残积土地区资料欠缺的工程提供参考，为基础设计、土性判断等方面提供依据。

关键词: 厦门, 花岗岩, 残积土, 工程特性

Abstract: The geotechnical properties of the undisturbed completely weathered granitic residual soils at a metro station in Xiamen were statistically analyzed. The conventional regression methods were applied in establishing relationships among the index properties (moisture content, void ratio and unit weight) and compressibility of residual soils. The correlations formulations and their correlation coefficients are also presented in the paper. The results indicate that, using the index properties for the estimation of compressibility have some reliability, but the influence of the structural strength of the completely weathered granitic residual soils should also be considered.

Key words: Xiamen, Granite, Residual Soil, Engineering Properties