| 深基坑开挖对周边地表沉降变形的影响 |
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| 引用本文： | 赵延林,张春玉,姜封国,景海河. 深基坑开挖对周边地表沉降变形的影响[J]. 黑龙江科技学院学报, 2009, 19(2): 97-100 |
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| 作者姓名： | 赵延林 张春玉 姜封国 景海河 |
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| 作者单位： | 黑龙江科技学院,建筑工程学院,哈尔滨,150027 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目，哈尔滨市科技创新人才研究专项资金项目 |
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| 摘 要： | 为有效控制基坑周边地表的沉降变形,应用弹塑性大变形理论与有限差分理论,对哈尔滨地区桩-锚支护形式下深基坑开挖引起的周边地表沉降进行了数值模拟,分析了开挖深度、锚杆层数、建筑物距离对基坑周边地表沉降变形的影响规律及基坑周边地表沉降变形的量化范围。结果表明,基坑周边地表的沉降量与沉降范围随锚杆层数的增加而减小;建筑物的存在不仅增大了地表的沉降量,而且使基坑周围地表的最大沉降区向基坑方向移动;当建筑物与基坑的距离小于1.0倍基坑设计开挖深度时,建筑物距离对地表沉降变形的影响较明显;基坑开挖对周边地表的影响范围基本在与基坑边缘相距1.5倍基坑设计开挖深度范围之内。
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| 关 键 词： | 深基坑 地表 沉降变形 数值模拟 |
Effect of excavation on sedimentation deformation of surrounding ground surface in deep foundation pit |
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| ZHAO Yanlin,ZHANG Chunyu,JIANG Fengguo,JING Haihe. Effect of excavation on sedimentation deformation of surrounding ground surface in deep foundation pit[J]. Journal of Heilongjiang Institute of Science and Technology, 2009, 19(2): 97-100 |
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| Authors: | ZHAO Yanlin ZHANG Chunyu JIANG Fengguo JING Haihe |
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| Affiliation: | College of Civil Engineering;Heilongjiang Institute of Science and Technology;Harbin 150027;China |
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| Abstract: | Aimed at effectively controlling the sedimentation deformation of ground surface surrounding foundation pit,this paper introduces the application of elastic-plasticity large deformation theory and finite difference theory to model the sedimentation deformation of surrounding ground surface created by excavation of foundation pit supported with pile-anchor in Harbin,and analyze the rules of sedimentation deformation of ground surface nearby foundation pit affected by excavation depth,anchor layer,building sp... |
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| Keywords: | deep foundation pit ground surface sedimentation deformation numerical modeling |
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