| 地基加固控制开挖对附近桩基影响有限元分析 |
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| 引用本文： | 钱建固,曲文婷,李伟伟,黄茂松. 地基加固控制开挖对附近桩基影响有限元分析[J]. 土木工程学报, 2011, 0(Z2): 69-72 |
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| 作者姓名： | 钱建固 曲文婷 李伟伟 黄茂松 |
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| 作者单位： | 同济大学;同济大学岩土及地下工程教育部重点实验室; |
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| 摘 要： | 采用有限元手段分析开挖施工对临近建筑物桩基影响规律,侧重于评估坑外地基加固控制开挖影响的有效性。对基坑开挖、地基加固以及邻近建筑桩基进行整体建模,以临近桩基承台水平位移为控制指标,对6种不同地基加固方案进行对比分析,研究复杂施工环境下地基加固控制开挖对已建和拟建建筑物影响的不同机理。研究表明,地基加固控制开挖对临近桩基的影响很大程度上取决于二者施工的前后性,开挖在临近桩基承载之后,则选择靠近临近桩基侧地基区段进行重点加固,反之,若开挖在临近桩承载之前,则选择近基坑侧地基区段进行重点加固。
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| 关 键 词： | 基坑开挖 地基加固 桩基位移 数值模拟 |
Finite element analysis for estimating influence of excavation on adjacent pile foundations with considerations of soil improvements |
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| Qian Jiangu, Qu Wenting, Li Weiwei, Huang Maosong. Finite element analysis for estimating influence of excavation on adjacent pile foundations with considerations of soil improvements[J]. China Civil Engineering Journal, 2011, 0(Z2): 69-72 |
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| Authors: | Qian Jiangu Qu Wenting Li Weiwei Huang Maosong |
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| Affiliation: | Qian Jiangu1,2 Qu Wenting1,2 Li Weiwei1,2 Huang Maosong1,2 (1.Tongji University,Shanghai 200092,China,2.Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education,Tongji University,China) |
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| Abstract: | This paper aims to investigate the effects of soil improvements on controlling the influence induced by excavation on adjacent pile foundations.The investigation is carried out using the finite element method(FEM),and the numerical model includes the excavation,treated soils and adjacent pile foundations.The criterion for estimating the effectiveness of soil improvement is based on the horizontal deformation of pile foundation during the construction.With full consideration of construction conditions,six op... |
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| Keywords: | excavation soil improvement pile foundation numerical simulation |
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