【摘要】 以大型火力电厂300 MW机组脱硫塔结构为原型,对该结构缩尺比例为1∶15的模型进行室内振动台试验,通过输入不同加速度峰值的正弦波与地震波,研究了脱硫塔模型结构的流固耦合动力特性,并与不考虑流固耦合的情况进行了对比。结果表明:在相同加速度峰值的正弦波作用下,考虑流固耦合的塔体加速度峰值反应小于无液体时的情况;随着输入地震波曲线与种类的改变,结构的动力反应也会随之改变,同时流固耦合情况下结构的反应与无液体时有明显区别;所得结论为深入研究薄壁开口结构在各种地震波作用下的流固耦合动力特性和制定相关规范提供了科学依据。更多还原

【Abstract】 Based on the desulfurization tower of 300 MW unit,authors studied the fluid-solid coupling dynamic characteristics of the large thin-wall structure by inputting the sine wave and earthquake wave in different acceleration peak values.A 1∶15 scaled steel model of desulfurization tower was tested on shaking table and authors compared the results with the non-liquid states.The results show that the responds of fluid-solid coupling acceleration peak values of the desulfurization tower is less than the case without liquid under the same acceleration peak values of sine wave.With the change of the input dynamic wave,the dynamic responses of the structure will change correspondingly.The fluid-solid coupling responses of structure are different from the non-liquid obviously.It provides an experimental basis for further studying of fluid-solid coupling dynamic characteristics of thin-wall openings structure under different seismic waves and the establishment of related specifications.更多还原