| 软土某深基坑开挖的实测性状和环境效应分析 |
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| 引用本文： | 应宏伟,杨永文,胡安峰,谢康和.软土某深基坑开挖的实测性状和环境效应分析[J].土木工程学报,2011(Z2):90-93. |
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| 作者姓名： | 应宏伟 杨永文 胡安峰 谢康和 |
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| 作者单位： | 浙江大学软弱土与环境土工教育部重点实验室;浙江大学岩土工程研究所; |
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| 基金项目： | “十一五”国家科技支撑项目(2008BAJ06B01); 浙江省重点创新团队支持计划(2009R50050) |
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| 摘 要： | 介绍杭州某深大基坑工程的支护设计、施工和监测方案,并对主要监测结果作了分析。实测结果表明:深厚软土地基大型基坑的水平位移偏大,基坑开挖引起的围护结构变形及对周边环境的影响具有明显的三维空间效应,基础底板施工期间基坑的"蠕变"现象明显;坑外地表沉降呈抛物线型分布,沉降影响范围大于开挖深度的1.5倍,最大沉降位于坑外约0.62倍挖深处,最大沉降值约0.37倍挖深,最大沉降约为最大水平位移的0.3倍。
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| 关 键 词： | 深基坑 水平位移 地表沉降 软土 杭州 |
Analysis on observed performance and environmental effect of a deep excavation in soft clay |
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| Ying Hongwei, Yang Yongwen, Hu Anfeng, Xie Kanghe.Analysis on observed performance and environmental effect of a deep excavation in soft clay[J].China Civil Engineering Journal,2011(Z2):90-93. |
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| Authors: | Ying Hongwei Yang Yongwen Hu Anfeng Xie Kanghe |
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| Affiliation: | Ying Hongwei1,2 Yang Yongwen1,2 Hu Anfeng1,2 Xie Kanghe1,2(1.Key Laboratory of Soft Soil and Environmental Geotechnical Engineering of the Ministry of Education,Zhejiang University,Hangzhou 310058,China,2.Institute of Geotechnical Engineering,China) |
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| Abstract: | The design,construction and monitoring scheme of a deep excavation in Hangzhou soft clay is presented,and the main monitoring results are discussed in detail.It shows that the maximum horizontal deformations of large scale excavations were far larger than those narrow ones.Space effects affected the deflections of the excavation greatly.Creep deformation occurred apparently during the curing of the bottom slab of the basement.The distribution of the surface settlements seemed to be of parabola,and the settl... |
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| Keywords: | deep excavation horizontal deformation ground settlement soft clay Hangzhou |
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