非饱和土地基沉降计算参数试验研究

李安洪1姚裕春1蒋关鲁2

铁道工程学报 ›› 2012, Vol. 29 ›› Issue (1) : 6-10.

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PDF(432 KB)
铁道工程学报 ›› 2012, Vol. 29 ›› Issue (1) : 6-10.
地质与路基

非饱和土地基沉降计算参数试验研究

  • 李安洪1姚裕春1蒋关鲁2
作者信息 +

Testing Study on Design Parameter of Settlement for Unsaturated Soil Foundation

  • LI An - hong1,YAO Yu - chun1,JIANG Guan - lu2
Author information +
文章历史 +

摘要

研究目的: 提出非饱和土地基沉降计算参数确定的有效试验方法,可使地基沉降计算参数选择更加合理,对于以地基沉降为主要控制因素的高速铁路客运专线建设具有重要意义。
研究结论: 针对胶济客专非饱和粉质黏土、粉土开展了室内固结试验及多种现场原位试验,经过综合分析得出: 胶济客专非饱和粉质黏土、粉土饱和度一般在 46% ~80%之间; 建议采用室内固结试验、静力触探试验及标贯试验综合确定非饱和粉质黏土、粉土沉降计算压缩模量参数; 可按《建筑地基基础设计规范》计算当量模量对应的经验系数进行计算沉降修正。

Abstract

Research purposes: To propose an effective test method to get suitable Settlement calculation parameter for unsaturated soil,it is very practical to high - speed rail passenger line with strict settlement demand.
Research conclusions: Based on the unsaturated silty clay and floury soil of Qingdao - Ji'nan passenger special line,carried by the consolidation test and in - situ tests,the results show that the unsaturated silty clay and floury soil’s saturation is between 46% ~ 80% ,the compression modulus of which to calculate settlement can be comprehensively obtained through the consolidation test ,cone penetration test and standard penetration test; and the calculating settlement of which can be revised according to the empirical coefficient of the Code for design of building.

关键词

胶济客专 / 非饱和土 / 原位试验 / 地基反力系数

Key words

Qingdao - Ji'nan passenger special line / unsaturated soil / in - situ testing / modulus of subgrade reaction

引用本文

导出引用
李安洪1姚裕春1蒋关鲁2. 非饱和土地基沉降计算参数试验研究[J]. 铁道工程学报, 2012, 29(1): 6-10
LI An - hong1,YAO Yu - chun1,JIANG Guan - lu2. Testing Study on Design Parameter of Settlement for Unsaturated Soil Foundation[J]. Journal of Railway Engineering Society, 2012, 29(1): 6-10
中图分类号: TU443   

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