| 基坑开挖对邻近桥梁桩基的影响分析 |
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| 引用本文： | 李龙剑,杨宏伟,李政林,蔡永昌.基坑开挖对邻近桥梁桩基的影响分析[J].地下空间与工程学报,2011,7(Z2):1697-1701. |
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| 作者姓名： | 李龙剑 杨宏伟 李政林 蔡永昌 |
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| 作者单位： | 1. 同济大学土木工程学院地下建筑与工程系,上海 200092;同济大学岩土及地下工程教育部重点实验室,上海 200092
2. 上海市政工程设计研究总院(集团)有限公司,上海,200092 |
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| 摘 要： | 针对无锡市某下穿高架桥的地下通道基坑工程,采用弹塑性有限元方法模拟无支撑基坑开挖对邻近高架基础的影响,分析了不同加固方案对控制桥梁桩基变形的作用.结果表明,由开挖引起的高架桩基附加位移较小,所采取的加固措施有效控制了该基坑的变形,降低了对邻近高架基础的影响.
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| 关 键 词： | 基坑开挖 弹塑性分析 邻近施工 桥梁桩基 土体加固 |
Numerical Analysis of the Influence of Unsupported Excavation on Adjacent Viaduct Foundation |
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| Li Longjian,Yang Hongwei,Li Zhenglin,Cai Yongchang.Numerical Analysis of the Influence of Unsupported Excavation on Adjacent Viaduct Foundation[J].Chinese Journal of Underground Space and Engineering,2011,7(Z2):1697-1701. |
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| Authors: | Li Longjian Yang Hongwei Li Zhenglin Cai Yongchang |
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| Affiliation: | 1,2(1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China; 3.Shanghai Municipal Engineering Design Institute,Shanghai,200092,China) |
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| Abstract: | Based on a pit excavation project of underground passage undercrossing a viaduct in Wuxi city,an elasto-plastic finite element was applied in this paper to study the influence of unsupported excavation on adjacent viaduct foundation,and to analyse the displacement of viaduct pile foundation induced by different reinforcing condition.The research result shows that the additional displacement of viaduct pile foundation caused by excavation is very small,so the reinforcement measures used in the construction could effectively control the deformation of the excavation and reduce its influence on adjacent viaduct foundation.The experience and conclusions presented can be referred in the design and analysis of similar excavation. |
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| Keywords: | pit excavation elasto-plastic analysis adjacent construction pile foundation of bridge soil reinforcement |
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