地震管道的横向平稳随机振动

针对地震作用对埋地管道的影响程度，应用数值计算方法得到振型函数的解析解。该计算方法假设埋地管道的平稳随机振动是线性振动的问题，即管—土系统的激励和响应都具有零均值，以此得到的协方差函数和相关函数是等同的。根据求解埋地管道平稳振动解析解的方法，分析管道的横向振动情况。结果表明，对于横向振动，管道中部应力和位移趋于恒定，边界区域的应力和位移是变化的，埋地管道的横向平稳振动的最大应力发生在滑动边界上。

Horizontal Stationary Random Vibrations of Earthquake Pipelines

According to influence degree of earthquake action on the buried pipelines, applying the method of numerical calculation to obtain analytic solutions of vibration mode function. Stationary random vibrations of buried pipeline in the calculation method of hypothesis is linear vibration problem, has zero mean and response pipe soil system incentive, co-variance function and correlation function to get is the same. According to the analytic solution for buried pipeline stationary vibrationsolution, lateral vibration analysis of pipeline. The results show that: the horizontal vibration of the pipeline, the central stress and displacement tends to a constant, the boundary region of the stress and displacement change, the lateral ride vibration of buried pipeline in the maximum stress occurs in the slip boundary.