苏州轨道交通2号线盾构区间隧道设计的特点与难点

发布时间：2018-06-16 16:45

本文选题：盾构隧道 + 下穿房屋　；参考：《铁道标准设计》2014年11期

【摘要】：结合苏州轨道交通2号线盾构区间隧道的设计,针对盾构隧道下穿沿线大量房屋,深入研究不同房屋建筑的沉降控制标准、盾构同步注浆和二次注浆参数、盾构掘进参数、监控方案等,提出了明确的保护实施方案;对线路绕避桥梁、桥梁拆除和盾构机直接切割桥桩方案做了技术比选,重点介绍盾构机切割桥桩的实施要求如盾构机刀盘改造、桥梁截桩保护、掘进施工和盾构隧道加强措施等;对盾构隧道下穿铁路站场,根据城际高速铁路和普速铁路不同的沉降控制标准,研究制定了不同的加固方案,结合铁路站场改造协调制定了具体的加固实施方案。
[Abstract]:Combined with the design of shield tunnel of Suzhou Rail Transit Line 2, aiming at a large number of houses passing through the tunnel under shield tunnel, the settlement control standards of different building buildings, the parameters of synchronous grouting and secondary grouting of shield tunneling, the parameters of shield tunneling are studied in depth. The monitoring scheme and so on are put forward, and the technical comparison and selection of the route around the bridge, the bridge removal and the direct cutting of the bridge pile by the shield machine are made, and the implementation requirements of the shield machine cutting bridge pile such as the transformation of the shield machine cutter head are introduced emphatically. According to the different settlement control standards of intercity high speed railway and common speed railway, different reinforcement schemes are studied and worked out for the shield tunnel under the railway station yard, such as bridge truncated pile protection, tunneling construction and shield tunnel strengthening measures, and so on, and according to the different settlement control standards of the inter-city high-speed railway and the common speed railway, Combined with the railway station yard reconstruction coordinated the formulation of specific reinforcement implementation plan.
【作者单位】：中铁第四勘察设计院集团有限公司;
【分类号】：U452.2

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