论文部分内容阅读
为了研究水下悬浮隧道锚索在随机激励作用下的响应,考虑锚索的垂度效应,建立水下悬浮隧道锚索非线性随机振动方程,采用蒙特卡罗数值模拟法对随机激励作用下锚索的振动响应进行研究。研究结果表明:在零均值高斯白噪声激励作用下锚索的位移和速度均方根响应经过一定时间后将趋于定值;随着激励荷载均方根的增大,锚索位移和速度均方根响应也随之增大;由于水体阻尼力的作用,锚索的位移和速度均方根响应比空气中的锚索大幅减小。
In order to study the response of underwater suspended tunnel anchor cable under random excitation, considering the dip effect of anchor cable, the nonlinear stochastic vibration equation of underwater suspension tunnel anchor cable is established. By using Monte Carlo numerical simulation method, Vibration response of the cable was studied. The results show that the root mean square response of displacement and velocity of tendon tends to be constant after a certain period of time under zero-mean Gaussian white noise excitation. As the root mean square of excitation load increases, the displacement and velocity of anchor cable The root-square response also increases; due to the damping effect of water body, the root mean square response of displacement and velocity of anchor cable is much smaller than that of anchor cable in air.