复杂地质条件下超大断面地下综合管廊接头响应数值模拟研究

摘要

当前地下综合管廊接头响应数值模拟方法,得到的分析结果与实测结果之间存在较大的误差,提出复杂地质条件下超大断面地下综合管廊接头响应数值模拟方法,根据土体运动方程和地下综合管廊接头运动方程构建整个体系的运动方程,并在体系运动方程的基础上通过设置土体参数及物理模型、边界条件、材料阻尼和地震波输入,完成复杂地质条件下超大断面地下综合管廊接头响应的数值模拟分析.所提方法可准确的在复杂地质条件下模拟地下综合管廊接头在地震波作用下的边界效应、位移响应和加速度响应.%A numerical simulation method for the joint response of super-large cross-section underground-integrated pipe joints under complex geological conditions is proposed, according to the soil motion equation and underground The motion equation of the joint pipe joint is used to construct the equation of motion of the whole system. Based on the equation of motion of the sys-tem, the soil parameters and physical models, boundary conditions, material damping and seismic wave input are set to complete the super-large cross-section underground integrated pipe gallery under complex geological conditions. Numerical simulation a-nalysis of joint response was proposed. The experimental results show that the proposed method can accurately simulate the bound-ary effect, displacement response and acceleration response of underground-integrated pipe joints under seismic waves under complex geological conditions.