摘要
重庆曾家岩大桥工程南隧道和北隧道位于重庆主城核心区,隧址区地表建筑密集,隧道先后近接市政府办公楼等多座高层建筑、近接多座国家级保护文物单位、多次上跨下穿轨道交通并共建、多次下穿既有道路回填土层及挡护结构,隧道围岩以软质泥岩为主,隧道结构形式多样,涵盖分离式、小净距、连拱、分岔式,建设环境极其复杂,隧道工程设计难度大、施工风险高。详细介绍该工程重难点结构设计和施工方案,可为类似交通隧道新建、改扩建及地下空间开发提供参考。
The south and the north tunnel of Zengjiayan-bridge project are located in the main urban built-up area of Chongqing. The density of building is high in the selected site of the tunnel. They are near government office and other high-rise buildings as well as many state-level cultural relics protection units,repeatedly crossing and passing the rail transport construction, many times through existing roads＇ backfill soil and retaining structure. The tunnel爷 s surrounding rock is soft mudstone. The tunnel has diverse structures including separating type, small spacing type, arch type and split plane layout type, resulting in extremely complex construction environment. Thus, tunnels design is of great difficulty and the construction process is of high risk. This paper gives a detailed introduction to the design and construction scheme of the important and difficult parts of the project, which can provide some references for the construction, reconstruction and expansion of similar traffic tunnels, and the development of underground space.
作者
黄伦海
肖博
吴梦军
HUANG Lunhai;XIAO Bo;WU Mengjun
出处
《公路交通技术》
2018年第B09期89-97,共9页
Technology of Highway and Transport
关键词
隧道
主城区
近接
共建
方案
tunnels
downtown
proximity
co-build
solution
