Abstract The White House Station of the Paris metro Line 14 is part of Grand Paris Express, the largest metro project underway in Europe. It includes an underground station, a tunnel built by conventional tunnelling methods and a connection to the existing Paris metro Line 7. This paper describes its structural design, risk and structural analyses, construction and monitoring. The project is located in a dense urban environment with high risks relating to geology (fractured limestone, swelling clay) and sensitive neighbouring structures (high-rise buildings and an existing metro line). Based on past experience and geotechnical analysis of the site investigations results, the design of the station included overcut diaphragm walls (1.5 m wide, 47 m deep), cross-walls (0.63 m wide, 6 m high) and slabs (20 m wide, 120 m long and 1.5 m thick). To understand the soil-structure interaction for the existing and new structures, a three-dimensional finite element model was developed and parametric studies were performed. Owing to planning restrictions, construction works were phased concurrently with a significant amount of demolition. To observe the real-time behaviour of soils and structures, a substantial monitoring system was utilised and continuous geotechnical observations were carried out.

中文翻译：

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大巴黎快车项目白宫站

摘要 巴黎地铁14号线白宫站是欧洲最大的地铁项目——大巴黎快车的一部分。它包括一个地下车站、一条通过传统隧道方法建造的隧道以及与现有巴黎地铁 7 号线的连接。本文描述了其结构设计、风险和结构分析、施工和监测。该项目位于密集的城市环境中，与地质（破碎的石灰岩、膨胀的粘土）和敏感的邻近结构（高层建筑和现有地铁线路）相关的风险很高。根据以往的经验和对现场勘察结果的岩土分析，车站的设计包括超挖隔墙（1.5 m 宽，47 m 深）、横墙（0.63 m 宽、6 m 高）和板（20 m 宽） , 120 m 长和 1.5 m 厚）。为了了解现有结构和新结构的土壤-结构相互作用，开发了一个三维有限元模型并进行了参数研究。由于规划限制，建筑工程与大量拆除工程同时分阶段进行。为了观察土壤和结构的实时行为，我们利用了一个重要的监测系统，并进行了连续的岩土工程观测。