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Case History: Complex Design and Construction of Tunnel and SOE to Accommodate Challenging Site Conditions

机译:案例历史:复杂的设计和隧道和SOE建设,以适应具有挑战性的场地条件

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The Narragansett Bay Commission Combined Sewer Overflow (CSO) Project includes the deep-storage Main Spine CSO Tunnel, a pump station, shafts, and near-surface facilities. This paper presents a case history of the complex design and construction of a tunnel for the installation of a Consolidation Conduit, as well as the support of excavation (SOE) for a 12.2-m (40-ft) deep Diversion Structure that also served as a tunnel receiving shaft during construction. This shaft consists of an innovative combination of secant piles, soilcrete walls, and bracings, and also supported a 259-cm (102-in.) pipe that maintained the existing sewer flow during construction.
机译:Narragansett Bay委员会联合下水道溢出(CSO)项目包括深仓主脊柱CSO隧道,泵站,轴和近表面设施。本文介绍了隧道复杂设计和构造的案例历史,用于安装整合导管,以及为12.2米(40英尺)的深度导流结构的挖掘(SOE)的支撑也是如此施工期间的隧道接收轴。该轴由剪辑桩,污垢墙和支架的创新组合组成,并且还支持259厘米(102英寸)的管道,在施工期间保持现有的下水道流动。

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