斜坡路基基底台阶的数学模型分析  

Analysis on Mathematical Model of Slope Roadbed Bench

作　　者：陈云[1] 

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》2011年第3期117-119,共3页Subgrade Engineering

摘　　要：鉴于现行规范关于斜坡路基基底台阶宽度的经验性规定,对潜在滑移面力学参数与台阶宽度的关系进行理论研究。介绍滞水层的形成机理,分析滞水层与填土体的共同作用,从力学角度建立了数学模型,推导出基底台阶合理宽度的计算式。建议修改相关规范条文,按推荐计算式确定台阶宽度,且要求台阶宽度不小于2 m,以更有效地提高边坡稳定性。According to the current specification on empirical regulations of slope roadbed bench width,the relationship between mechanical parameters of potential sliding face and bench width is studied theoretically in this paper.Besides,mathematical model is established from the point of mechanics through introducing the formation mechanism of aquifer and analyzing the interaction between aquifer and filling soil,and thus the formula of roadbed bench reasonable width is educed.It is recommended to modify the relevant provisions to determine bench width according to the recommended formula,which shall be no less than 2 m in order to more effectively improve slope stability.

关 键 词：斜坡路基 台阶 滞水层 复合抗剪强度 

分 类 号：U416.11[交通运输工程—道路与铁道工程]