基于气动弹性模型的曼型干式煤气柜风致响应风洞试验研究
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摘要
为了对煤气柜进行风致响应分析,根据风洞试验相似准则,设计制作了曼型干式煤气柜气动弹性模型,并对煤气柜模型动力特性进行试测。在此基础上,详细分析了煤气柜在不同工况下的风致响应。结果表明:煤气柜气动弹性模型能够准确模拟原型结构动力特性;活塞位置对煤气柜位移响应的影响显著,位移响应最大值发生在活塞处于低位时,迎风面柜体的2/3高度处;试验风速对活塞邻近测点位移响应的影响有限,对与活塞相距较远测点位移响应的影响明显;活塞的存在对柜体风振系数起到抑制作用,但总体而言煤气柜风振系数沿子午向从上至下逐渐增大。结合试验结果给出了煤气柜风振系数计算式。
In order to analyze the wind-induced response of the gas tank,the areoelastic model of MAN-type dry gas tank was designed and manufactured,which was based on the similarity criterion of wind tunnel tests.The dynamic characteristics of the gas tank model were tested.On this basis,through the areoelastic model test of the gas tank,the wind-induced response of the tank in different load conditions was analyzed in detail.The test results show that the areoelastic model of gas tank can accurately simulate the dynamic characteristics of the prototype structure.The position of gas tank piston has a significant effect on the wind vibration response of the cabinet.The maximum displacement response occurred on the windward side at 2/3 height of the cabinet body when the piston was at the low location.The wind speed has little influence on the displacement response of the measuring points which were close to the location of piston,but had a great influence on the displacement response of those which are far away from the piston.The existence of the piston led to significant reduction of the wind vibration coefficient of the cabinet.Overall,from the top of the gas tank to the bottom,the wind vibration coefficient increased gradually along the meridian.According to the test results,the calculation formula of the wind vibration coefficient of the gas tank is established in this paper.
In order to analyze the wind-induced response of the gas tank,the areoelastic model of MAN-type dry gas tank was designed and manufactured,which was based on the similarity criterion of wind tunnel tests.The dynamic characteristics of the gas tank model were tested.On this basis,through the areoelastic model test of the gas tank,the wind-induced response of the tank in different load conditions was analyzed in detail.The test results show that the areoelastic model of gas tank can accurately simulate the dynamic characteristics of the prototype structure.The position of gas tank piston has a significant effect on the wind vibration response of the cabinet.The maximum displacement response occurred on the windward side at 2/3 height of the cabinet body when the piston was at the low location.The wind speed has little influence on the displacement response of the measuring points which were close to the location of piston,but had a great influence on the displacement response of those which are far away from the piston.The existence of the piston led to significant reduction of the wind vibration coefficient of the cabinet.Overall,from the top of the gas tank to the bottom,the wind vibration coefficient increased gradually along the meridian.According to the test results,the calculation formula of the wind vibration coefficient of the gas tank is established in this paper.
引文
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[11]邹良浩,梁枢果,徐金虎,等.大型煤气柜风振响应与抗风性能分析[J].振动、测试与诊断,2011,31(1):41-44.(ZOU Lianghao,LIANG Shuguo,XUJinhu,et al.Analysis of wind-induced displacement response and wind-resistant capability of huge gas tank[J].Journal of Vibration,Measurement&Diagnosis,2011,31(1):41-44.(in Chinese))
[12]但堂波.曼型干式煤气柜的受力性能研究[D].杭州:浙江大学,2007:67-68.(DAN Tangbo.Study on the structural behavior of MAN type dry gas holder[D].Hangzhou:Zhejiang University,2007:67-68.(in Chinese))
[13]刘欣鹏,李正良,陈俊帆,晏致涛.曼型干式煤气柜气弹模型设计与模态参数识别[J].西南交通大学学报,2016,51(4):1-6.(LIU Xinpeng,LIZhengliang,CHEN Junfan,YAN Zhitao.Full aeroelastic model design and modal test for MAN type dry gas[J].Journal of Southwest Jiaotong University,2016,51(4):1-6.(in Chinese))
[14]ASCE.Manuals and repots on engineering practice:No.67:wind tunnel models studies of buildings and structures[M].Reston,VA:ASCE,1987:29-36.
[15]李正良,刘欣鹏,晏致涛,等.曼型干式煤气柜动力特性分析及风振响应主要贡献模态识别[J].振动与冲击,2015,34(19):79-86.(LI Zhengliang,LIUXinpeng,YAN Zhitao,et al.Analysis of dynamic characteristic and identification of natural modes with significant contributions to wind-induced vibration of MAN type dry gas storage tank[J].Journal of Vibration and Shock,2015,34(19):79-86.(in Chinese))
[16]李星.大型圆筒形煤气柜风致响应实测研究[M].长沙:湖南大学,2014:31-35.(LI Xing.Researches on full-scale measurements of wind-induced response in large cylinder gas tank[M].Changsha:Hunan University,2014:31-35.(in Chinese))
[2]ISYUMOV N,ABU-SITT S H.Approaches to the design of hyperbolic cooling towers against the dynamic action of wind and earthquakes[J].Bulletin of the International Association of Shell Structures,1972,48(3):3-22.
[3]鲍侃袁.大型双曲冷却塔的风荷载和风致响应理论分析与试验研究[D].杭州:浙江大学,2009:42-56.(BAO Kanyuan.Theoretical and experimental research on wind load and wind induced response of large hyperbolic cooling towers[D].Hangzhou:Zhejiang University,2009:42-56.(in Chinese))
[4]KAWAMUR T,TAKAMI H,KUWAHARA K.Computation of high Reynolds number flow around a circular cylinder with surface roughness[J].Fluid Dynamics Research,1986,1(2):145-162.
[5]斯坎特罗伯特·H·埃米尔西缪.风对结构的作用:风工程导论[M].刘尚培,项海帆,谢霁明,译.上海:同济大学出版社,1992:121-125.
[6]李鹏飞,赵林,葛耀君,黄志龙.超大型冷却塔风荷载特性风洞试验研究[J].工程力学,2008,25(6):60-67.(LI Pengfei,ZHAO Lin,GE Yaojun,HUANGZhilong.Wind tunnel investigation on wind load characteristics for super large cooling towers[J].Engineering Mechanics,2008,25(6):60-67.(in Chinese))
[7]刘天成,赵林,丁志斌.圆形截面冷却塔不同表面粗糙度时绕流特性的试验研究[J].工业建筑,2006,36(增刊1):301-304.(LIU Tiancheng,ZHAO Lin,DING Zhibin.Test research of flow feature for hyperbolic circular section cooling tower with different super facial roughness[J].Industrial Construction,2006,36(Suppl.1):301-304.(in Chinese))
[8]ZASSO A,GIAPPINO S,MUGGIASCA S.Wind tunnel study of a cone-like shaped roof:Reynolds number effects[J].Journal of Wind Engineering&Industrial Aerodynamics,2006,94(5):431-444.
[9]郑史雄.大型储气结构设计风荷载的确定[J].福州大学学报(自然科学版),2005,33(增刊1):90-94.(ZHENG Shixiong.Study on the wind load for huge gas tank[J].Journal of Fuzhou Univercity(Natural Science),2005,33(Suppl.1):90-94.(in Chinese))
[10]张冬兵,梁枢果,陈寅,李茂新.大型煤气柜风荷载的风洞试验及数值模拟[J].实验流体力学,2010,24(6):47-51.(ZHANG Dongbing,LIANG Shuguo,CHEN Yin,LI Maoxin.Wind tunnel test and numerical simulation of wind loads on huge gas tank[J].Journal of Experiments in Fluid Mechanics,2010,24(6):47-51.(in Chinese))
[11]邹良浩,梁枢果,徐金虎,等.大型煤气柜风振响应与抗风性能分析[J].振动、测试与诊断,2011,31(1):41-44.(ZOU Lianghao,LIANG Shuguo,XUJinhu,et al.Analysis of wind-induced displacement response and wind-resistant capability of huge gas tank[J].Journal of Vibration,Measurement&Diagnosis,2011,31(1):41-44.(in Chinese))
[12]但堂波.曼型干式煤气柜的受力性能研究[D].杭州:浙江大学,2007:67-68.(DAN Tangbo.Study on the structural behavior of MAN type dry gas holder[D].Hangzhou:Zhejiang University,2007:67-68.(in Chinese))
[13]刘欣鹏,李正良,陈俊帆,晏致涛.曼型干式煤气柜气弹模型设计与模态参数识别[J].西南交通大学学报,2016,51(4):1-6.(LIU Xinpeng,LIZhengliang,CHEN Junfan,YAN Zhitao.Full aeroelastic model design and modal test for MAN type dry gas[J].Journal of Southwest Jiaotong University,2016,51(4):1-6.(in Chinese))
[14]ASCE.Manuals and repots on engineering practice:No.67:wind tunnel models studies of buildings and structures[M].Reston,VA:ASCE,1987:29-36.
[15]李正良,刘欣鹏,晏致涛,等.曼型干式煤气柜动力特性分析及风振响应主要贡献模态识别[J].振动与冲击,2015,34(19):79-86.(LI Zhengliang,LIUXinpeng,YAN Zhitao,et al.Analysis of dynamic characteristic and identification of natural modes with significant contributions to wind-induced vibration of MAN type dry gas storage tank[J].Journal of Vibration and Shock,2015,34(19):79-86.(in Chinese))
[16]李星.大型圆筒形煤气柜风致响应实测研究[M].长沙:湖南大学,2014:31-35.(LI Xing.Researches on full-scale measurements of wind-induced response in large cylinder gas tank[M].Changsha:Hunan University,2014:31-35.(in Chinese))