DMTC消散试验探求软黏土固结系数研究

涂启柱

DMTC消散试验探求软黏土固结系数研究 English Version

涂启柱

中铁第四勘察设计院集团有限公司，湖北武汉 430063

详细信息

作者简介:
涂启柱 (1982 – ),男，安徽宣城人，硕士，助理工程师，主要从事于地质路基设计与研究工作。

中图分类号: TU443
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出版历程
- 发布日期: 2012-05-19

Determination of consolidation coefficient for soft clay from DMTC dissipation tests

TU Qi-zhu

China Railway Siyuan Survey and Design Group Ltd., Wuhan 430063, China

摘要

摘要: 基于扁铲侧胀试验（ DMT ）的基本原理，简要地介绍了利用 DMT 的 C 值消散试验求解水平向固结系数的理论与方法。结合商丘—合肥—杭州（商合杭）铁路工程湖州试验段与上海—南通（沪通）铁路工程常熟试验段的 DMTC 消散试验进行了实例分析研究。结果表明： DMTC 消散试验与孔压静探消散试验获取水平向固结系数较为接近，二者在均质土层中相关性较好，在非均质土层中相关性较差；与 DMTC 消散试验及孔压静探消散试验获取的水平向固结系数相比，室内试验获取的水平向固结系数明显偏小，与其他研究者的成果一致。
- 铁路工程 /
- 扁铲侧胀试验 /
- 软黏土 /
- DMTC 消散试验 /
- 水平向固结系数
Abstract: Based on the flat dilatometer test (DMT) theory, the method for deriving the coefficient of horizontal consolidation from DMTC dissipation tests is introduced. The DMTC test results of saturated soft clay ground in Shangqiu-Hefei-Hangzhou railway and Shanghai-Nantong railway are presented, and the coefficient of horizontal consolidation is obtained from the DMTC dissipation data. The results of the coefficient of horizontal consolidation are compared with CPTU dissipation test data and laboratory odometer test data. The comparison shows that the coefficients of horizontal consolidation determined by DMTC tests and CPTU tests are very close. The correlation is good for homogeneous soil, but bad for non-homogeneous soil. The coefficients of horizontal consolidation from laboratory odometer tests are smaller than those obtained by DMTC and CPTU tests, as reported by other researchers.
- railway engineering /
- flat dilatometer test /
- soft clay /
- DMTC dissipation test /
- coefficient of horizontal consolidation

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参考文献(17)

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