2016年4月上 施工技术 第45卷第7期 CONSTRUCTION TECHNOLOGY 113 D0I:10.7672/8js2016070113 浅埋隧道围岩位移及应力变化规律研究* 邓洪亮，陈鸽，郭洋，王思森，武胜林2 (1.北京工业大学建筑工程学院，北京100124；2.北京工业职业技术学院，北京100042) [摘要]采用有限元软件MIDAS/GTS对黄董坡隧道的开挖过程进行了数值模拟，分析了浅埋隧道的围岩变形规律 和受力情况.同时结合现场监测数据，最后得出围岩位移最大值和应力最大值分别出现在拱顶部位和拱腰部位的 结论，因此控制隧道拱顶沉降和缓解拱腰部位的应力集中现象是浅埋隧道施工中的重要环节，这就要求进行必要 的超前支护、及时施做初期支护以及密切监测危险区域，确保施工安全. [关键词]地下工程：隧道；浅埋隧道；数值模拟：围岩；位移；应力 [中图分类号]U456.3 [文献标识码]A [文章编号]1002-8498(2016)07-0113-05 The Research on Displacement and Stress Variation Rule of Surrounding Rock in the Shallow Buried Tunnel Excavation Deng Hongliang' Chen Ge' Guo Yang' Wang Simiao' Wu Shenglin2 (1.College of Architecture and Ciril Engineering Beijing University of Technology Beijing 100124 China: 2.Beijing Polytechnic College Beijing 100042 China) Abstract:Using finite element analysis software MIDAS/GTS to numerically simulate the excavation process of Huangdongpo shallow buried tunnel analyze the surrounding rock deformation and stress distribution of the shallow buried tunnel.At the same time bined with the field monitoring data finally it is concluded that the maximum displacement and the maximum stress of surrounding rock appeared in the vault and the arch waist position respectively so it is important to control the subsidence of the tunnel vault and alleviate the stress concentration of the arch waist in the shallow buried tunnel construction which requires the necessary support in advance the primary support in a timely manner and the close monitoring of...
浅埋隧道围岩位移及应力变化规律研究.pdf
