摘要
论述了国内外计算隧道衬砌外水压力的折减系数法和渗流场计算方法。分析了公路隧道围岩渗流场-应力场的耦合机理,并以此建立了计算外水压力的数学模型。同时提出了一种简化模型来表示两场的耦合本构关系,并给出了计算公路隧道衬砌外水压力的有限元方法步骤。
The paper discusses the methods of the coefficient reduction in determining tunnel lining＇s external water pressure in the world. It also analyses the mechanics of coupled seepage and stress fields. Then it establishes the mathematics model to calculating the external water pressure. This paper puts forward a new simple model of coupled field constitutive relation and expounds the FEM process to calculating the external water pressure.
出处
《中南公路工程》
2007年第1期55-59,共5页
Central South Highway Engineering
关键词
渗透系数
渗流场
应力场
耦合模型
外水压力
coefficient of permeability
seepage field
stress field
coupled model
external water
pressure
