摘要
因受周边复杂环境的限制,人民路越江隧道浦东风井修建在已建成的圆形隧道上,然后在风井底板和隧道之间施工5个风口,完成隧道的通风系统。然而风口开挖中如何确保已建结构的正常使用,是施工中必须解决的关键问题。通过MIDAS-GTS软件,建立了隧道、风井结构及周边土体的三维有限元数值模型,对隧道管片、风井底板及已施工风口内衬结构受力变形进行了详细的分析,为风口开挖对周边环境的影响提供了理论依据,验证了该施工方案的可靠性。同时通过现场监测,验证了数值模拟的计算结果,为同类工程建设提供依据。
Restricted by the complex environment,the Pudong air shaft of Renmin Road crossing-river tunnel is built on the existing circle tunnel,and then five wind passages between the air shaft and tunnel are constructed so as to achieve the wind system for the tunnel.However,how to ensure the normal working of building structures when the wind passages are excavated is the key to be solved during the construction.A 3D model for the tunnel,air shaft structure and soils is established to provide theoretical evidence for influences on the environment when wind passages are excavated.The reliability of the construction method is proved,and the results of numerical simulation are validated through monitoring data.It is helpful to the construction of similar projects.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2010年第S1期415-419,共5页
Chinese Journal of Geotechnical Engineering
关键词
隧道
风口
数值模拟
tunnel
air shaft
numerical simulation
