【摘要】 山岭隧道一般都处于高水压环境中,衬砌损伤特性需要考虑水压渗透作用。采用Weibull统计分布函数,建立混凝土整体初始渗透系数及损伤场变量计算公式;求解外水压力下圆形衬砌内渗透孔隙水压力;在此基础上,建立混凝土圆形衬砌渗流-应力-损伤耦合模型,并通过ABAQUS有限元分析软件进行算例分析,说明承水压山岭圆形混凝土衬砌损伤与渗流及应力之间关系密切。更多还原

【Abstract】 Mountain tunnels are usually subjected to high hydraulic pressure.The hydraulic osmosis should be taken into account when analyzing the damage of tunnels.To build the formula of initial permeability of concrete and the damage field variations,Weibull distribution function is adopted.The pore water pressure of concrete circle lining is solved under the high hydraulic condition.Furthermore,the model of penetration-stress-damage is build and verified by ABAQUS through a case analysis,whose result suggests a close relationship among the three factors under high hydraulic pressure for circle mountain concrete lining.更多还原