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现代隧道技术 2017, Vol. 54 Issue (3) :17-25    DOI:
研究与探讨 最新目录 | 下期目录 | 过刊浏览 | 高级检索 << Previous Articles | Next Articles >>
公路运营隧道衬砌裂缝长期监测及分析
(1青岛理工大学土木工程学院, 青岛 266033; 2北京交通大学城市地下工程教育部重点实验室, 北京 100044)
Long-Term Monitoring and Analysis of Lining Cracks in Operating Highway Tunnels
(1 School of Civil Engineering, Qingdao University of Technology, Qingdao 266033; 2 Key Laboratory for Urban UndergroundEngineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044)
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摘要  裂缝在公路运营隧道衬砌结构中普遍存在, 其稳定与否直接关乎隧道的运营安全, 而通过监测手段分析预测裂缝的发展态势是一种最为直观和有效的手段。文章针对目前衬砌裂缝监测成果偏少这一现状, 依托某二级公路隧道工程, 主要对以下内容进行研究: 从裂缝类型、 所处位置及围岩级别、 裂缝的几何特征 3个方面分析了衬砌裂缝的分布规律; 采用光栅光线传感器对选取的 12条典型衬砌裂缝进行了为期 2年的监测工作, 监测成果表明衬砌裂缝发展规律可大致分为平稳型、 周期性变化型、 增长型及闭合型 4种, 且从裂缝几何特征参数的监测数据可以看出, 多数裂缝处于一种相对稳定的可控状态, 对隧道结构稳定性影响较小; 从勘查设计、 施工以及运营管理 3个环节对隧道衬砌裂缝成因进行了系统分析, 并据此提出了隧道衬砌裂缝预防措施; 对衬砌裂缝的治理, 建议采用 “先监测、 后分类、 再选择治理措施” 的治理理念。研究成果可为国内外类似隧道工程衬砌裂缝评估及防治提供参考与借鉴。
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Abstract: Cracks are generally distributed in the linings of operating highway tunnels, for which stability directly affects the operational safety of the tunnels. Monitoring tools are an intuitive and effective method for analyzing and predicting the development of cracks. However, because there is a lack of monitoring documentation regarding lining cracks, the following study was carried out based on a second-class highway tunnel: the lining crack distribution laws were analyzed from 3 aspects—crack types, location and surrounding rock grades of cracks and geometric features of cracks—and 12 selected typical lining cracks have been monitored for 2 years using fiber grating sensors.The monitoring results show that the lining crack development laws can be divided into 4 types: stable, periodically changing, increasing and closed. Most of the cracks are correspondingly stable and controllable based on the monitoring data of the crack′s geometric features, which slightly affects the stability of tunnel structure. After systematic analysis of the causes of tunnel lining cracks from the aspects of survey and design, construction and operation management, countermeasures for the tunnel lining cracks are proposed. The treatment principle of“monitoring first, followed by classification and then selection of treatment measures”is suggested to treat the lining cracks. The results provide a useful reference for the assessment and treatment of cracks in similar tunnels both at home and abroad.
KeywordsHighway tunnel under operation,   Lining crack,   Long-term monitoring,   Fiber grating sensor,   Cause of cracking,   Countermeasures for cracks     
基金资助:基金项目: 国家自然科学基金资助项目 (51408554); 中央高校基本科研专项资金资助项目(2013G1502027); 河南省教育厅科学技术研究重点项目 (14B560026) .
作者简介: 作者简介: 张素磊 (1983-), 男, 讲师, 工学博士, 主要从事隧道及地下工程结构健康诊断方面的研究工作,E-mail: zhangsulei@zzu.edu.cn.
引用本文:   
.公路运营隧道衬砌裂缝长期监测及分析[J]  现代隧道技术, 2017,V54(3): 17-25
.Long-Term Monitoring and Analysis of Lining Cracks in Operating Highway Tunnels[J]  , 2017,V54(3): 17-25
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