Analysis and Control of Ground Buildings Safety Risk in Complex Urban Tunnel Excavation

摘要：

As is well-known, strata disturbance occurs inevitably due to urban shallow tunnel construction, which may cause adjacent ground buildings to subside, incline and even craze. In complex urban environment, all these results will have bad influence on the safety and normal operation of buildings more or less. Consequently, safety risk analysis and control of ground buildings during tunnel construction is very important to protect structures as well as decrease adverse impact on urban environment. Based on the project of Xiamen Airport Road Tunnel passing through complex ground buildings, and by using insitu monitoring and numerical simulation method, deformation control standard of ground buildings mainly involving building maximum settlement, differential settlement and crack width was put forward; furthermore, three-level management method- Early Alarm, Alarm, Utmost for building deformation was proposed. For important 34＃ building, numerical simulation is applied to predict and analyze tunnel construction influence, and reasonable risk control measures are presented correspondingly. Especially the schemes of strata reinforcement and building uplift depending on grouting are introduced.

关键词： urban tunnel engineering buildings deformation safety risk control standard risk control grouting

作者: HOU Yanjuan ZHANG Dingli ZHANG Bingyin

作者单位: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China Eng Engineering Research Center of Tunnel and Underground Engineering of Ministry of Education, Beijing State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 2090-2096

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）