盾构隧道下穿高速铁路运营线路路基段的施工技术

Construction Technology of Subway Schield Tunneling Crossing under High-speed Railway

结合苏州广济路地下空间人防配套设施工程(火车站站至三医院站区间隧道)成功穿越运营中沪宁城际高速铁路和京沪普速铁路工程实例,从组织机构保障、施工方案编审、地基加固、沉降控制标准确定、土仓压力控制等15个方面,论述了盾构穿越高速铁路施工过程中的关键控制点,总结得出盾构隧道下穿运营中高速铁路技术的几个重要结论,包括对高速铁路的保护措施、沉降控制标准的确定、盾构土仓压力的控制、同步注浆及二次注浆等。

Based on the construction project tor civil air defense facilities in underground space of GuangJi Road in Suzhou City, that crosses under Shanghai-Nanjing Intercity High-speed Railway and Beijing-Shanghai normal railway, the vital control points during the process of shield tunne- ling are described from 15 aspects, including organization guarantee, construction scheme, foundation stabilization, earth pressure control, etc., some important conclusions are drawn about shield tunneling crossing under high-speed railway technology, such as the protection of high-speed railway, con- trol of settlement standards, pressure of shield soil storage con- trol, synchronic and second grouting, and so on.