基于流固耦合的顶管法施工对已建隧道安全性的影响分析  

Analysis on the Influences of Pipe Jacking Construction on the Safety of Existing Tunnel Based on the Fluid-solid Coupling

作　　者：陈璟璟[1] 冯琪敏 林本海[3] CHEN Jing-jing;FENG Qi-min;LIN Ben-hai(School of Civil Engineering ,Guangzhou University ,Guangzhou 510006,China;School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006,China;Research Center of Underground Engineering and Geological Hazard, Guangzhou University, Guangzhou 510006,China)

机构地区：[1]广州大学土木工程学院,广州510006 [2]广东工业大学土木与交通工程学院,广州510006 [3]广州大学地下工程与地质灾害研究中心,广州510006

出　　处：《建筑监督检测与造价》2016年第1期19-24,共6页Supervision Test and Cost of Construction

摘　　要：地下管线是城市基础设施中很重要的一部分,随着城市的密集化,地下管线的增加,顶管法也得到了空前的发展。广州地区降水量丰富且地下水位较高,隧道经常处于富水状态,顶管法施工过程中很容易出现塌方,造成地铁隧道的大变形,带来安全隐患。当前,关于顶管法施工对周边土体变形、房屋建筑及地铁隧道影响的研究很多,但都没有考虑流体和固体的共同作用机理。因此必须深入研究在考虑流固耦合作用下顶管法施工对运营地铁盾构隧道的影响,尽可能准确地预测隧道结构的应力和变形情况,同时,也为类似工程的施工提供理论依据和实践经验,以确保周边环境的安全和盾构隧道顺利施工。Underground pipelines play an important part in city infrastructure. Pipe jacking method has met it sunprecedented development with city densification and increasing underground pipelines. Abundant precipitation and high ground water level in Guangzhou area often cause the tunnels in a state of water-rich. Therefore, it would be easily cause landslides during the pipe jacking construction, resulting in large deformation of metro tunnels and potential safety hazard.There are many existing research on the effects of surrounding soil deformation, buildings and Metro tunnels causing by pipe jacking construction, whereas, none of them consider the interactions between fluid and solid. Therefore, the pipe jacking construction's effect on operating Metro shield tunnels under the Fluid-Solid Coupling action must be consider and profoundly study, as accurately as possible to predict the stress and deformation of tunnel structure. It also provides a theoretical basis and practical experience for the construction of similar projects, to ensure the safety of the surrounding environment and the smooth construction of shield tunnel.

关 键 词：渗流-应力耦合 排水边界 三维数值模拟 沉降分析 

分 类 号：TU714[建筑科学—建筑技术科学]