流固耦合对大型脱硫塔动力特性的影响
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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 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.
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.
引文
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[12]HARRIS H G,SABNIS G M.Structural Modelingand Experimental Techniques[M].Englewood Cliffs:Prentice Hall Inc,1983:48-62.
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[14]樊永宁,解盘石,来兴平,等.深部复杂应力环境下巷道破坏固-流耦合数值模拟分析[J].西安科技大学学报,2007,27(1):1-4.FAN Yong-ning,XIE Pan-shi,LAI Xing-ping,et al.Numerical Simulation on Solid-fluid Couple Charac-teristics of Roadway in Deep-mine and Complex Con-ditions[J].Journal of Xi an University of Science andTechnology,2007,27(1):1-4.
[15]郭健,刘伟庆.钢筋混凝土异形柱框架-短肢剪力墙结构振动台试验与理论分析[J].西安建筑科技大学学报:自然科学版,2007,39(5):610-615.GUO Jian,LIU Wei-qing.Shaking Table Test andTheoretical Analysis on RC Frame-short Pier ShearWall Structure with Special-shaped Columns[J].Journal of Xi an University of Architecture&Tech-nology:Natural Science Edition,2007,39(5):610-615.
[2]HOUSNER G W.Dynamic Pressure on AcceleratedFluid Containers[J].Bulletin of the Seismological So-ciety of America,1957,47(1):15-35.
[3]SHAABAN S H,NASH W A.Finite Element Analy-sis of a Seismically Excited Cylindrical Storage Tank,Ground Supported,and Partially Filled with Liquid[R].Amherst:University of Massachusetts,1976.
[4]BALENDRA T,NASH W A.Seismic Analysis of aCylindrical Liquid Storage Tank with a Dome by theFinite Element Method[C]//ASME.Century 2 Pres-sure Vessels and Piping Conference.San Francisco:ASME,1980:12-15.
[5]VELETSOS A S.Seismic Effects in Flexible LiquidStorage Tanks[C]//WCEE.Proceeding of the 5thWorld Conference on Earthquake Engineering.Rome:WCEE,1974:630-639.
[6]VELETSOS A S,YANG J Y.Dynamics of Fixed-baseLiquid Storage Tanks[J].Earthquake Engineering&Structural Dynamics,1979,7(1):587-601.
[7]HOROUN M A.Vibration Studies and Tests of Li-quid Storage Tanks[J].Earthquake Engineering&Structure Dynamics,1983,11(2):179-206.
[8]蔡国琰,曲乃泗,赖国璋.贮液罐结构水弹性抗震分析[J].大连工学院学报,1979(3):86-100.CAI Guo-yan,QU Nai-si,LAI Guo-zhang.The Earth-quake Hydroelastic Response Analysis of the LiquidStorage Tanks[J].Journal of Dalian University ofTechnology,1979(3):86-100.
[9]仇伟德,蔡强康.地震力作用下刚性旋转壳贮液罐液体的动力反应[J].地震工程与工程振动,1983,3(1):38-53.QIU Wei-de,CAI Qiang-kang.Dynamic Response ofLiquid in a Rigid Axisymmetrical Tank Excited byGround Motion[J].Earthquake Engineering and En-gineering Vibration,1983,3(1):38-53.
[10]王翎羽,何玉敖,陈冠卿.储液罐在地震作用下的“象足”失稳分析[J].天津大学学报,1992(4):78-85.WANG Ling-yu,HE Yu-ao,CHEN Guan-qing.The“Elephant Foot”Instability Analysis of Liquid Stor-age Tanks Subjected to Earthquake Excitations[J].Journal of Tianjin University,1992(4):78-85.
[11]张云峰,周利剑.立式储罐动力反应谱分析[J].世界地震工程,2005,21(1):55-60.ZHANG Yun-feng,ZHOU Li-jian.Dynamic ResponseSpectrum Analysis of Standing Tank Systems[J].World Information on Earthquake Engineering,2005,21(1):55-60.
[12]HARRIS H G,SABNIS G M.Structural Modelingand Experimental Techniques[M].Englewood Cliffs:Prentice Hall Inc,1983:48-62.
[13]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bo-long.Structural Seismic Test[M].Beijing:Seismic Press,1989.
[14]樊永宁,解盘石,来兴平,等.深部复杂应力环境下巷道破坏固-流耦合数值模拟分析[J].西安科技大学学报,2007,27(1):1-4.FAN Yong-ning,XIE Pan-shi,LAI Xing-ping,et al.Numerical Simulation on Solid-fluid Couple Charac-teristics of Roadway in Deep-mine and Complex Con-ditions[J].Journal of Xi an University of Science andTechnology,2007,27(1):1-4.
[15]郭健,刘伟庆.钢筋混凝土异形柱框架-短肢剪力墙结构振动台试验与理论分析[J].西安建筑科技大学学报:自然科学版,2007,39(5):610-615.GUO Jian,LIU Wei-qing.Shaking Table Test andTheoretical Analysis on RC Frame-short Pier ShearWall Structure with Special-shaped Columns[J].Journal of Xi an University of Architecture&Tech-nology:Natural Science Edition,2007,39(5):610-615.
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