摘要
武汉黄孝河综合管廊上穿地铁3号线区间盾构隧道,采用顶管法施工。为保证地铁运营安全,采用数值模拟计算对地表沉降和管片隆起规律进行分析,同时对水泥土搅拌桩的加固作用进行研究。结果表明,采用水泥搅拌桩进行地基加固后,顶管法施工对地表沉降和盾构管片的影响满足规范要求,为类似工程提供参考。
The utility tunnel near Huangxiaohe River in Wuhan cross above the shield tunnel of Metro Line3 and is constructed by pipe jacking method.In order to ensure the safety of Metro operation, this paper uses numerical simulation to studythe law of settlement of surface and uplift of shield segment and the effect of cement soil mixing pile.The results show that the construction of pipe jacking method is feasibleafter using cement soil mixing pile, and the influence on settlement of surface and uplift of shield segment meet the requirements of technical standard,and a reference for similar projects is provided.
作者
程宁
CHENG Ning(China Railway SIYUAN Survey and Design Group Co.,Ltd WuHan 430063)
出处
《铁道勘测与设计》
2019年第3期58-61,共4页
Railway Survey and Design
关键词
综合管廊
顶管隧道
上穿地铁隧道
水泥土搅拌桩
Utility tunnel
Pipe jacking tunnel
cross above metro tunnel
Cement soil mixing pile
