| 软土深基坑开挖地表沉降估算方法的分析 |
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| 引用本文： | 刘小丽,周贺,张占民.软土深基坑开挖地表沉降估算方法的分析[J].岩土力学,2011,32(Z1):90-94. |
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| 作者姓名： | 刘小丽 周贺 张占民 |
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| 作者单位： | 中国海洋大学海洋环境与生态教育部重点实验室;中国海洋大学建设监理公司; |
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| 基金项目： | 山东省自然科学基金资助项目(No.ZR2009FQ028) |
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| 摘 要： | 将地表沉降曲线视为正态和偏态分布模式分别对地表沉降进行估算,是当前软土地区深基坑开挖地表沉降计算中两种较为有效的方法,但由于均需要计算地表沉降曲线的包络面积,从而使其计算过程较复杂,同时也增加了计算结果的不确定性。基于上述原因,在以上两种计算方法的基础上,利用经验关系式对现有的计算方法进行了改进,改进后的地表沉降计算方法的计算过程更加简便。利用改进后的地表沉降计算方法对4个工程实例进行了计算分析,并在此基础上对两种计算方法的适用性进行了比较。结果表明,改进后的基坑开挖地表沉降估算方法更加简便实用,地表沉降曲线为偏态分布模式时的计算结果更合理。
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| 关 键 词： | 软土 深基坑 地表沉降 开挖 |
| 收稿时间： | 2010-06-22 |
Analysis of surface settlement estimation of deep foundation pit excavation in soft soil |
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| LIU Xiao-li,ZHOU He,ZHANG Zhan-min.Analysis of surface settlement estimation of deep foundation pit excavation in soft soil[J].Rock and Soil Mechanics,2011,32(Z1):90-94. |
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| Authors: | LIU Xiao-li ZHOU He ZHANG Zhan-min |
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| Institution: | 1. Key Laboratory of Marine Environment and Ecology of Ministry of Education, Ocean University of China, Qingdao, Shandong 266100, China; 2. Construction Supervision Company, Ocean University of China, Qingdao, Shandong 266071, China |
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| Abstract: | At present,the surface settlements of deep foundation pit excavation in soft soil can be estimated by regarding the surface settlement curves as normal distribution and skew distribution respectively.The two methods mentioned above are suitable but complicated due to computing the envelope areas of the surface settlement curves.The uncertainties of the results increase at the same time.Thus,improvement has been made for the two methods based on empirical relations to simplify the computation process.The sur... |
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| Keywords: | soft soil deep foundation pit surface settlement excavation |
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