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首页> 外文会议>Rapid excavation and tunneling conference >CHALLENGES IN CONSTRUCTION OF URBAN ROAD TUNNELS: THE CASE HISTORY OF TOHID EXPRESSWAY TUNNELS IN CENTRAL TEHRAN
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CHALLENGES IN CONSTRUCTION OF URBAN ROAD TUNNELS: THE CASE HISTORY OF TOHID EXPRESSWAY TUNNELS IN CENTRAL TEHRAN

机译：城市道路隧道建设挑战：德黑兰中部托希高速公路隧道案例

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摘要

Tohid Tunnel project includes a set of twin tunnels to accommodate six lanes of traffic along the Chamran-Navab Highway in Central Tehran. The tunnel is 2.1 km long and is built under active highways, street traffic, and a subway station. Each tunnel is 12.5 m wide and 8.5 m high, separated by a series of concrete columns 1.5 m in diameter and 4 meters apart supporting the tunnel crown as well as the soil above at a maximum depth of about 23 m. The tunnels were constructed using sequential excavation method and lined with cast in place reinforced concrete using precast concrete segments as permanent forms and facade. The design-build contract was over $400M and included the geotech investigation, structural and tunnel design, construction, and fit outs including the paving of the road, lighting, ventilation, and traffic monitoring and control systems. The project started in 2006 and was inaugurated in February 2010. This paper discusses the ground conditions, design issues, many challenges that was addressed during the construction, and finally some of innovative approaches to the design and construction of the tunnel.
机译：Tohid Tunnel Project包括一套双隧道，可以在德黑兰中部夏尔兰纳米高速公路容纳六个车道。隧道长2.1公里，在主动高速公路，街道交通和地铁站下建造。每个隧道宽12.5米，高8.5米，由一系列混凝土柱分离，直径1.5米，相隔4米，支撑隧道冠和最大深度的土壤约为23米。使用顺序挖掘方法构造隧道，并用浇铸的钢筋混凝土排列，使用预制混凝土段作为永久形式和门面。设计 - 建造合同超过400万美元，包括土工学调查，结构和隧道设计，施工和装备，包括铺路道路，照明，通风和交通监控系统。该项目于2006年开始，于2010年2月落成。本文讨论了基础条件，设计问题，在建造期间解决的许多挑战，以及隧道设计和建设的一些创新方法。

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