| 某地铁车站出入口结构病害原因分析 |
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| 引用本文： | 刘庭金,周书扬,蔡仁贤.某地铁车站出入口结构病害原因分析[J].岩土力学,2014,35(Z2):370-378. |
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| 作者姓名： | 刘庭金 周书扬 蔡仁贤 |
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| 作者单位： | 1.华南理工大学 土木与交通学院，广州 510640；2.华南理工大学 亚热带建筑科学国家重点实验室，广州 510640 |
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| 摘 要： | 受邻近的深基坑施工影响，某地铁出入口结构出现了整体倾斜、变形缝部位水平错位以及密封胶和衬垫板脱落等严重病害，可能危及到行人安全。为从中吸取教训，为今后类似的地铁安全保护工程实践提供参考，详细介绍该出入口结构病害事故案例：主要包括相关工程概况，如出入口结构、南侧深基坑的设计和工程地质条件；归纳总结了出入口结构的主要病害情况；综合出入口场地周边的施工情况、出入口结构和基坑位移监测数据、地连墙施工和基坑开挖的三维模拟分析、地连墙施工扰动预应力锚索的概念分析和数值模拟分析以及水位下降诱发出入口结构沉降的计算分析，探讨了诱发出入口结构病害的主要原因；从地铁保护角度出发，总结了事故教训。
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| 关 键 词： | 地铁保护 基坑 出入口结构 病害 诱发原因 |
| 收稿时间： | 2014-06-18 |
Analysis of damage causes of a metro station passageway |
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| LIU Ting-jin,ZHOU Shu-yang,CAI Ren-xian.Analysis of damage causes of a metro station passageway[J].Rock and Soil Mechanics,2014,35(Z2):370-378. |
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| Authors: | LIU Ting-jin ZHOU Shu-yang CAI Ren-xian |
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| Institution: | 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; 2. State Key Laboratory of Subtropical Architecture Science, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Some damages such as overall incline, horizontal misalignment in the movement joint, spalling of sealant and liner in the movement joint etc. of a metro station passageway have been found, which caused by excavation of adjacent deep foundation. In order to provide guidance for the metro security, the passageway accidents and damage cases have been described as follows: the project’s overview of the accident case is introduced including the design and engineering geology of the passageway and deep foundation; the main damage of the passageway is summarized detailedly; the main cause for the passageway’s damage is discussed based on circumstances surrounding, the passageway construction site, actual displacement data, pit monitoring data. Numerical simulations are carried out for the underground diaphragm wall and excavation construction of the foundation pit, prestressed anchorages are disturbed by the underground diaphragm wall construction and the computed passageway’s displacement is induced by drawdown. Finally, from the perspective of metro protections, the successful experience and accident protection lessons are summarized. |
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| Keywords: | metro protection foundation pit passageway structure damage induced causes |
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