【摘要】 目的研究浮放设备在实际地震波输入下摆动反应特性.方法根据浮放设备摆动反应分析理论,分析了浮放设备在地震作用下发生摆动的初始条件、发生倾倒的临界条件,给出了浮放设备在地震作用下摆动反应计算分析方法,采用Runge-Kutta法求解浮放设备地震摆动反应运动微分方程,编制了相应的计算软件进行了浮放设备地震摆动反应数值模拟研究,得到了浮放设备在真实地震波输入下摆动反应时程及计算结果.结果算例分析结果表明(1)浮放设备宽高比越大,地震摇摆反应越小,反之则易于发生倾倒现象;(2)当浮放设备的宽高比相同时,浮放设备尺寸越小摆动反应越大,越容易倾倒,尺寸越大越稳定;(3)设备宽高比相同的情况下,设备尺寸越大发生倾倒用时越长;宽高比相对较小的设备,当尺寸较大时,发生倾倒所用时间也相对较长.结论由于输入了真实地震波,计算得出浮放设备反应时程及结果是可靠的.更多还原

【Abstract】 Based on the oscillation response theory of free-standing equipment,the initial condition for occurrence of oscillation and the critical condition for falling down of free-standing equipment under seismic excitations are analyzed.The calculation method for seismic oscillation response analysis is presented.The differential equation of oscillation of free-standing equipment under seismic excitations is resolved by Runge-Kutta algorithm,the software is developed,and the reliability of the software is validated by numerical illustrations.The oscillation response characteristics of free-standing equipment are investigated by using the developed software,and the oscillation response time history and some reasonable results of free-standing equipment under seismic excitations are also obtained.更多还原