地铁盾构施工对既有拱桥的变形影响规律与控制技术  

Deformation Law and Control Technology of the Existing Arch Bridge Influenced by Subway Shield Construction

作　　者：任建喜[1] 史景阳[1] 占有名[1] 孙杰龙[1] 李龙[1] 贺小俪[1] 郭颖[1] 

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054

出　　处：《施工技术》2014年第18期61-65,共5页Construction Technology

摘　　要：采用FLAC3D软件研究了2种不同工况下盾构隧道下穿护城河拱桥施工引起的拱桥变形规律,研究表明只有在对护城河拱桥采取一定的加固措施后方能保证其变形在允许范围内。提出了盾构下穿护城河拱桥施工的变形措施,制定了监测方案。实践表明,提出的变形控制措施保证了拱桥沉降变形在允许范围内,提出的变形控制措施合理有效。The arch bridge deformation law, caused by the shield tunnel construction under the arch bridge, was studied by FLAC3D under two different working conditions, which indicates that its deformation scope is controlled effectively only by taking some reinforcement measures to the moat arch bridge. The measures to control deformation of the arch bridge construction were put forward, and monitoring plan was formulated. The practice shows the deformation control measures which were put forward successfully ensured the arch bridge settlement deformation within the scope of the permission. It was proved to be reasonable and effective.

关 键 词：隧道工程 盾构 FLAC模拟 拱桥 监测 变形控制 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]