土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (3): 326-328.

• 专题论述 • 上一篇    下一篇

室内土工试验指标与杭州软粘土结构的关系

陈丽平1，高燕妙1，贾海栋2   

  1. （1.浙江省地矿勘察院有限公司，杭州 310023;2.信息产业电子第十一设计研究院科技工程股份有限公司，杭州 310020）
  • 收稿日期:2019-06-26 修回日期:2019-07-29 出版日期:2020-06-20 发布日期:2020-06-21
  • 作者简介:陈丽平（1979-），女，工程师，研究方向为岩土测试。

Relations Between the Index Properties and Compressibility of Hangzhou Structured Soft Clay

CHEN Liping1, GAO Yanmiao1, JIA Haidong2   

  1. (1.Institute of Geology and Mineral Resources Exploration Zhejiang; Hangzhou310023;
    2.The IT Electronics Eleventh Design & Research Institute Scientific and Technological Engineering Co. Ltd., Hangzhou 310020)
  • Received:2019-06-26 Revised:2019-07-29 Online:2020-06-20 Published:2020-06-21

摘要： 杭州地区广泛分布着海相沉积的软弱粘性土层，这层土压缩性高，透水性差，承载力低，并且具有一定的结构性，对工程施工影响较大。选取杭州萧山地区的土层进行压缩性试验，检测土样的基本物理指标以及相应的压缩指标，比较不同软硬程度的结构土，讨论其物理指标和压缩指标之间的关系，尤其是表征软粘土软硬状态的液性指数与压缩曲线的关系，以期宏观力学指标与微观结构建立联系，探讨土的结构性强弱和液性指数的关系。

关键词: 软粘土, 结构土, 液性指数, 压缩性

Abstract: The soft clay of marine originis widely deposited in Hangzhou area. The marine clay is characterized as high compressibility, poor permeability, low bearing capacity, and specific structural properties. The soft clay depositions are adversely affected theengineering construction, so that it is necessary to study engineering properties of this type of soil. This paper first summarizes the microstructure and chemical compositions of type of soil, then a series of laboratory onedimensional consolidation tests were performed on undisturbed soil samples from Xiaoshan District of Hangzhou City. Other index properties of this type of soft soils were also tested and the relationship between the compressibility and index properties were statistically established, especially, the relationship between liquid index and the compressibility.

Key words: Soft Clay, Structured Clay, Liquid Index, Compression Index

中图分类号: