兰州市某深基坑支护坡体变形分析与处理

叶帅华; 朱彦鹏; 周勇

兰州市某深基坑支护坡体变形分析与处理 English Version

叶帅华^{1, 2},
朱彦鹏^{1, 2},
周勇^{1, 2}

1. 兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州 730050; 2. 兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州 730050

基金项目: 国家科技支撑计划项目（2011BAK12B07）

详细信息

作者简介:
叶帅华(1983- )，男，河南巩义人，副教授，主要从事黄土及湿陷性黄土地区柔性支挡结构的设计与研究。E-mail: yeshuaihua@163.com。

中图分类号: TU476
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出版历程
- 收稿日期: 2013-06-06
- 发布日期: 2013-11-24

Analysis and treatment for deformation of supporting slope of a deep foundation pit in Lanzhou

YE Shuai-hua^{1, 2},
ZHU Yan-peng^{1, 2},
ZHOU Yong^{1, 2}

1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China; 2. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China

摘要

摘要: 以兰州市安宁区一深基坑工程为背景,对该基坑在开挖过程中支护坡体的变形原因进行了全面地分析,并及时采取临时处理措施防止坡体继续变形,待变形控制后,通过验算给出了合理的基坑支护方案。通过有限元软件建立有限元计算分析模型,对比分析了锚杆未施加预应力和施加预应力的工况下基坑的变形,计算表明预应力对控制基坑变形有明显的效果,计算分析结果为给出合理的支护方案提供了可靠的依据。经过对比分析找出了基坑变形产生的原因,为了避免类似工程事故的发生,给出了类似基坑工程的设计、施工和管理方面的建议。
- 深基坑 /
- 支护坡体 /
- 变形 /
- 分析与处理 /
- 建议
Abstract: Based on a deep foundation pit project in Anning, District of Lanzhou in China, the reasons for the deformation of its supporting slope under excavation process are comprehensively analysed. The further slope deformation is prevented by the temporary treatment measures promptly. Through calculationg, the reasonable supporting schemes of the foundation pit are given after the deformation is controled. A finite element model is established by means of the finite element software. The deformation of the foundation pit under no prestress and prestress conditions on anchors is comparatively analyzed. The calculation shows that the deformation of the foundation pit is significantly controled by the pre-stress. The reliable basis for reasonable support scheme is provided through the calculation and analysis results. Through comparative analysis, the reasons for the deformation are obtained. In order to avoid similar engineering accidents, some suggestions for the design, construction and management of foundation pits are proposed.
- deep foundation pit /
- supporting slope /
- deformation /
- analysis and treatment /
- suggestion

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参考文献(11)

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