列车荷载下浆砌片石拱形骨架护坡数值模拟分析  

Numerical simulation analysis of grouting masonry arch skeleton slope protection under train load

作　　者：张洪峰 赵亚东 宫凤梧[3] 张银铂 董捷[1,2] ZHANG Hongfeng;ZHAO Yadong;GONG Fengwu;ZHANG Yinbo;DONG Jie(Hebei University of Architecture,Zhangjiakou,Hebei 075000;Hebei Innovation Center of Transportation Infrastructure in Cold Region,Zhangjiakou 075000;Geological Brigade,Hebei Provincial Geological Prospec Ting Bureau,Zhangjiakou 075000)

机构地区：[1]河北建筑工程学院,河北张家口075000 [2]河北省寒冷地区交通基础设施工程技术创新中心,河北张家口075000 [3]河北省地矿局第三地质大队,河北张家口075000

出　　处：《河北建筑工程学院学报》2024年第3期37-43,共7页Journal of Hebei Institute of Architecture and Civil Engineering

基　　金：河北建筑工程学院硕士研究生创新基金项目(XY2024011)。

摘　　要：在工程领域,浆砌片石护坡对于维护边坡稳定,防治冲蚀、滑塌等路基病害有重要作用。以浆砌片石拱形骨架护坡为研究对象,采用三维数值模拟研究方法,利用MIDAS GTS软件进行三维建模及划分网格,导入FlAC3D进行数值模拟分析拱形骨架护坡在列车荷载条件下的位移及加速度响应分析。结论显示,浆砌片石拱形骨架护坡在列车荷载下坡顶位移相对最大,坡脚位移相对最小,上部拱形骨架位移整体大于下部拱形骨架位移,拱顶处位移小于拱脚处位移,且对应各点加速度峰值发展规律。因此浆砌片石拱形骨架施工时,应控制危险段的节点强度,防止发生严重破坏。In the field of engineering,slurry masonry slope protection plays an important role in maintaining slope stability and preventing subgrade diseases such as erosion and slump.In this paper,the arch skeleton slope protection of grout masonry is taken as the research object,and three-dimensional numerical simulation research method is adopted.MIDAS GTS software is used to conduct three-dimensional modeling and mesh division,and FlAC3Dis introduced to conduct numerical simulation to analyze the displacement and acceleration response of arch skeleton slope protection under train load.The results show that the displacement of slope top and slope foot is relatively maximum under train load,the displacement of upper arch skeleton is larger than that of lower arch skeleton,and the displacement of arch top is smaller than that of arch foot,which corresponds to the development law of peak acceleration at each point.Therefore,the joint strength of the dangerous section should be controlled to prevent serious damage during the construction of the arched skeleton.

关 键 词：浆砌片石 拱形骨架护坡 数值模拟 

分 类 号：U25[交通运输工程—道路与铁道工程]