摘要
文章为研究北京砂卵石地层某小净距暗挖区间下穿施工对京张高铁路基的影响,以下穿既有京张高铁路基段的新建小净距暗挖区间工程为背景,对小净距暗挖区间工程施工进行了设计,并用MIDAS/GTS有限元软件对下穿既有高铁路基段的新建小净距暗挖区间施工过程进行了有限元分析;研究了小净距暗挖区间施工过程中既有高铁路基位移变化特征;并收集相关监测数据总结位移变化规律,实际监测数据验证了数值计算的可行性。
In order to study the influence of underpass construction on the subgrade of Beijing-Zhangjiakou High-speed Railway with small clear spacing in sand-gravel stratum in Beijing,in view of the project of the newly-built small clear spacing excavation section under-crossing the existing subgrade of Beijing-Zhangjiakou High-speed Railway,the construction of small clear spacing excavation section is designed,and the construction process under-crossing the existing high-speed railway subgrade is analyzed by MIDAS/GTS finite element software.The characteristics of the displacement variation of the existing high-speed railway subgrade during the construction of small clear spacing excavation section are studied,and the displacement variation regularity is summarized by collecting the relevant monitoring data.The monitoring data verifies the feasibility of the numerical calculation.
作者
易领兵
杜明芳
朱东东
YI Lingbing;DU Mingfang;ZHU Dongdong(CCCC Railway Consultants Group Co.,Ltd.,Beijing 100089,China;School of Civil Engineering and Architecture,Henan University of Technology,Zhengzhou 450001,China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2020年第12期1652-1656,共5页
Journal of Hefei University of Technology：Natural Science
基金
郑州交通重点工程建设管理中心横向委托资助项目(51000128)。
关键词
砂卵石地层
小净距暗挖区间
下穿施工
MIDAS/GTS软件
京张高铁路基
sand-gravel stratum
small clear spacing excavation section
underpass construction
MIDAS/GTS software
Beijing-Zhangjiakou High-speed Railway subgrade
