流固耦合对大型脱硫塔动力特性的影响  

Influence of Fluid-solid Coupling on Dynamic Characteristics of Large Desulfurization Tower

作　　者：盛朝晖[1,2] 宋波[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]河北工程大学水电学院,河北邯郸056021

出　　处：《建筑科学与工程学报》2010年第1期36-42,共7页Journal of Architecture and Civil Engineering

基　　金："十一五"国家科技支撑计划项目(2006BAJ13B04)

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。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 nonliquid 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.

关 键 词：脱硫塔 流固耦合 振动台试验 动力特性 薄壁结构 

分 类 号：TU33[建筑科学—结构工程]