上跨城市地铁高速铁路路基工程变形控制技术研究  

Research on Deformation Control Technology of Subgrade Project of Overcrossing Urban Subway High-speed Railway

作　　者：郭在旭[1] 胡会星[1] 周和祥 秦谢宇 GUO Zaixu;HU Huixing;ZHOU Hexiang;QIN Xieyu(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《路基工程》2020年第6期162-166,共5页Subgrade Engineering

基　　金：四川省科技计划:川藏铁路重大工程风险识别与对策研究(2019YFG0460)。

摘　　要：以某高速铁路路基上跨城市地铁为背景,采用三维有限元数值计算手段,分析采用轻质混凝土与传统A,B组填料填筑路基和不同软基加固措施对下伏地铁以及高铁路基沉降的影响。通过计算分析,提出了轻质混凝土填筑路基+水泥搅拌桩软基加固技术方案,并对水泥搅拌桩设计参数给出了优化建议。Taking a high-speed railway subgrade crossing urban subway as an engineering example,using three dimensional finite element numerical calculation,the influence of filling subgrade with light concrete and traditional group A and B fillers and the different soft foundation reinforcement measures on the settlement of the underlying subway and high-speed railway subgrade were analyzed.Through calculation and analysis,the technical scheme of light concrete filling subgrade+cement mixing pile soft foundation reinforcement was put forward for the first time and the optimization suggestions for design parameters of cement mixing pile were given.

关 键 词：高速铁路 轻质混凝土 水泥搅拌桩 数值计算 沉降变形 下伏地铁 

分 类 号：U213.11[交通运输工程—道路与铁道工程]