Stratified Settlement Characteristics of the Soil Strata in Shanghai due to Dewatering
Stratified Settlement Characteristics of the Soil Strata in Shanghai due to Dewatering
复制标题
上海地区土层脱水分层沉降特征
DOI：
10.1061/(asce)as.1943-5525.0000453
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发表时间：
2015
影响因子：
2.4
通讯作者：
Chen Jin-Jian
中科院分区：
文献类型：
--
作者：
Zhu Yan-Fei;Huang Yi-zhang;Tan Yan-Pei;Chen Jin-Jian
摘要降水引起的地面沉降是一个重要的问题，分层土体的沉降具有累积效应。对分层地基沉降的深入研究有助于更好地评价地基沉降。为了更好地研究降水引起的上海地区土层分层沉降特性，对上海某地铁车站基坑工程进行了现场监测。监测结果分析表明，地下水位持续下降。地表沉降量随着距基坑距离的增加而减小，最大沉降量小于允许值。分层沉降监测结果表明，地面沉降小于软粘土层底部沉降，说明在降水过程中，下卧土层中的粘土层发生了膨胀。这个特殊的phe…
AbstractDewatering-induced ground settlement is an important issue, and there a cumulative effect in stratified soil settlement. Detailed research of the stratified soil settlement devotes to a better evaluation of ground settlement. To better investigate the dewatering-induced stratified settlement characteristics of the soil strata in Shanghai, an intensive field-monitoring program was carried out for the excavation of an underground metro station, which involved the dewatering of confined aquifers in urban areas. Analyses of monitoring results suggest that the groundwater tables dropped steadily. The ground settlement decreased with an increasing distance from the excavation, and the maximum ground settlement was less than the allowable value. The results for stratified settlement monitoring showed that the ground settlement was less than the settlement at the bottom of the soft soil clay layer, which indicates that the clay layer swelled during dewatering in the underlying soil layer. This special phe...