盾构下穿火车站区域关键施工技术

Application of Key Construction Technology for Shield Undercrossing Railway Station Area

苏州市轨道交通4号线下穿苏州火车站区域盾构施工风险较高、难度较大。为了保证火车站区域结构物安全及施工顺利进行,施工前对下穿火车站区域结构物、地层特性及土压平衡盾构施工的主要技术进行分析,并结合试验段盾构掘进参数,总结出盾构下穿火车站区域关键施工技术。结果证实有效地保证了构筑物的安全,施工效果良好,尤其是通过理论计算与实践相结合的研究手段总结出相关盾构掘进参数,为苏州地区此类工程施工提供很好的借鉴。

In order to ensure the safety of the regional structure and the smooth construction of the railway station, the main requirements of the area structure, the stratum characteristics and the earth pressure balance shield construction are analyzed before the construction, and the tunneling parameters of the shield is combined with the test section for the construction of the regional shield construction at the Suzhou Railway Station. The key construction technology of the shield undercrossing railway station is summed up, which effectively guarantees the safety of the structure and the construction effect is good. In particular, it summarizes the relevant shield tunneling parameters through the combination of theoretical calculation and practice, and provides a good reference for this kind of construction in Suzhou.