摘要
以在建的阳平关—安康铁路二线工程为依托,采用解析法和数值模拟方法对新型深路堑支护结构H形路堑桩板墙进行结构受力和变形分析,并与明洞结构进行对比。结果表明:H形路堑桩板墙通过横向支撑将支挡结构连接成整体,横向支撑起到减少桩的侧向位移的作用;H形路堑桩板墙结构受力均匀,整体变形协调,稳定性较高,能达到常规挡土墙难以达到的支撑高度;H形路堑桩板挡土墙与明洞结构相比,较易施工且可缩短工期,节约工程成本。
Based on the second line project of Yangpingguan Ankang railway under construction,the structure stress and deformation analysis was made for H-shaped cutting pile sheet wall which is a new type of deep cutting retaining structure by adopting analytical method and numerical simulation method,and the results were compared with that of open cut tunnel structure.The results show that H-shaped cutting pile sheet wall connects the retaining structure into a whole through the transverse support,which plays a role in reducing the lateral displacement of pile.The structure of H-shaped cutting pile sheet wall has the uniform structural force,coordinated whole deformation and higher stability,which can reach the unapproachable support height of conventional retaining wall,and H-shaped cutting retaining wall could be constructed easily,shorten the construction period and save the project cost compared with the open cut tunnel structure.
作者
刘春刚
LIU Chungang(China Railway First Survey and Design Institute Group Co. Ltd.,Xian Shaanxi 710043,China)
出处
《铁道建筑》
北大核心
2017年第11期82-85,共4页
Railway Engineering
关键词
铁路路基
H形桩板挡土墙
数值计算
支挡结构
明洞
变形
稳定性
支撑高度
Railway subgrade
H-shaped pile sheet retaining wall
Numerical calculation
Retaining structure
Open cut tunnel
Deformation
Stability
Support height
