防屈曲支撑在大型火力发电厂结构中的应用研究
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摘要
防屈曲支撑(BRB)作为一种金属屈服耗能支撑构件,克服了普通支撑受压屈曲的缺点,在地震中具有良好的耗能能力和延性。为了研究防屈曲支撑大型火力发电厂主厂房结构中的耗能减震效果,采用非线性分析软件ABAQUS对设置防屈曲支撑的某大型火力发电厂主厂房结构进行了罕遇地震作用下的有限元分析,对比了不同地震波作用下的结构弹塑性分析结果。分析结果表明:设置防屈曲支撑以后,结构的抗震性能显著提高,在7度罕遇地震作用下主厂房结构能够满足"大震不倒"的设防要求。研究为防屈曲支撑在大型火力发电厂主厂房结构中的应用提供了成功的工程案例,其设计思路可以为大型火力发电厂主厂房结构的减震控制提供有益的借鉴和参考。
As an energy dissipation brace member made from the yielding of metal,a Buckling Restrained Brace( BRB) can overcome shortcomings that a common brace has,which then provide the building good energy dissipation capacity and ductility in earthquakes. To study the BRB effect in the main hall building,a nonlinear finite element analysis software ABAQUS was adopted to analyze seismic performances of a main hall building BRBs under rare earthquakes. Elastic-plastic analysis results under different seismic waves were discussed in this paper. The results show the structural seismic performance has been improved significantly.A successful engineering case was provided for the application of BRB in the damping design of main hall building industrial structures.
As an energy dissipation brace member made from the yielding of metal,a Buckling Restrained Brace( BRB) can overcome shortcomings that a common brace has,which then provide the building good energy dissipation capacity and ductility in earthquakes. To study the BRB effect in the main hall building,a nonlinear finite element analysis software ABAQUS was adopted to analyze seismic performances of a main hall building BRBs under rare earthquakes. Elastic-plastic analysis results under different seismic waves were discussed in this paper. The results show the structural seismic performance has been improved significantly.A successful engineering case was provided for the application of BRB in the damping design of main hall building industrial structures.
引文
[1]陈云,吕西林,蒋欢军.减轻框架结构地震反应的新型消能减震装置[J].结构工程师,2012,28(2):95-100.Chen Yun,Lu Xilin,Jiang Huanjun.New energy dissipation device for mitigating seismic responses of frame structures[J].Structural Engineers,2012,28(3):74-81.(in Chinese)
[2]李宏男,霍林生.结构多维减震控制[M].北京:科学出版社,2008.Li Hongnan,Huo Linsheng.Multidimensional structure vibration control[M].Beijing:Science and Technology Press,2008.(in Chinese)
[3]Curadelli R O,Riera J D.Design and testing of a lead damper for seismic applications[C].Proceeding of the Institution of Mechanical Engineers,Part C:Journal of Mechanical Engineering Science,2007,221(2):159-165.
[4]Robinson W H,Monti M D.Seismic isolation and passive damping—the New Zealand experience on isolation[C].Energy Dissipation Post-Smart Conference on Isolation,Energy Dissipation and Control of Vibration of Structures,Taormina,Sicily,Italy,August 25-27,1197.
[5]Monti M D,Robinson W H.A lead shear damper for reducing the motion induced by wind and earthquake[C].Proc.11th WCEE,1996.
[6]付仰强,王维凝.剪切型防屈曲支撑在高层钢结构中的应用[J].工业建筑,2011,41:382-385.Fu Yangqiang,Wang Weining.Application of lead shear damper in high-rise steel building’s shock absorption[J].Industrial Construction,2011,41:382-385.(in Chinese)
[7]彭凌云,闫维明.板式剪切型防屈曲支撑的试验研究及有限元分析[J].振动与冲击,2010,29(1):183-187.Peng Lingyun,Yan Weiming.Finite element analysis and testing of a plate type shear lead damper[J].Journal of Vibration and Shock,2010,29(1):183-187.(in Chinese)
[8]闫维明,张春科.一种剪切型防屈曲支撑及其在某火电厂房中的应用[J].工业建筑,2008,38(7):41-44.Yan Weiming,Zhang Chunke.A new type of shearing lead damper and its application in mill buildings for a thermal power plant[J].Industrial Construction,2008,38(7):41-44.(in Chinese)
[9]中华人民共和国住房和城乡建部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.GB 50011—2010Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[10]Zhou Y,Lu X L,Weng D G,et al.A practical design for reinforced concrete structures with viscons dampers[J].Engineering Structures,2012,(39):187-198.
[11]郭彩娟,何斌,刘成清,等.某博物馆结构防屈曲支撑减震分析[J].土木工程学报,2013,46(S1):38-44.Guo Caijuan,He Bin,Liu Chengqing,et al.The damping analysis of a museum structure with Buckling Restrained Braces[J].China Civil Engineering Journal,2013,46(S1):38-44.(in Chinese)
[12]侯双军,朱奇云,卢文胜,等.大底盘大空间复杂结构的抗震性能分析[J].结构工程师,2012,28(3):74-81.Hou Shuangjun,Zhu Qiyun,Lu Wensheng,et al.Analysis of seismic performance of a structure with large podium[J].Structural Engineers,2012,28(3):74-81.(in Chinese)
[2]李宏男,霍林生.结构多维减震控制[M].北京:科学出版社,2008.Li Hongnan,Huo Linsheng.Multidimensional structure vibration control[M].Beijing:Science and Technology Press,2008.(in Chinese)
[3]Curadelli R O,Riera J D.Design and testing of a lead damper for seismic applications[C].Proceeding of the Institution of Mechanical Engineers,Part C:Journal of Mechanical Engineering Science,2007,221(2):159-165.
[4]Robinson W H,Monti M D.Seismic isolation and passive damping—the New Zealand experience on isolation[C].Energy Dissipation Post-Smart Conference on Isolation,Energy Dissipation and Control of Vibration of Structures,Taormina,Sicily,Italy,August 25-27,1197.
[5]Monti M D,Robinson W H.A lead shear damper for reducing the motion induced by wind and earthquake[C].Proc.11th WCEE,1996.
[6]付仰强,王维凝.剪切型防屈曲支撑在高层钢结构中的应用[J].工业建筑,2011,41:382-385.Fu Yangqiang,Wang Weining.Application of lead shear damper in high-rise steel building’s shock absorption[J].Industrial Construction,2011,41:382-385.(in Chinese)
[7]彭凌云,闫维明.板式剪切型防屈曲支撑的试验研究及有限元分析[J].振动与冲击,2010,29(1):183-187.Peng Lingyun,Yan Weiming.Finite element analysis and testing of a plate type shear lead damper[J].Journal of Vibration and Shock,2010,29(1):183-187.(in Chinese)
[8]闫维明,张春科.一种剪切型防屈曲支撑及其在某火电厂房中的应用[J].工业建筑,2008,38(7):41-44.Yan Weiming,Zhang Chunke.A new type of shearing lead damper and its application in mill buildings for a thermal power plant[J].Industrial Construction,2008,38(7):41-44.(in Chinese)
[9]中华人民共和国住房和城乡建部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.GB 50011—2010Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[10]Zhou Y,Lu X L,Weng D G,et al.A practical design for reinforced concrete structures with viscons dampers[J].Engineering Structures,2012,(39):187-198.
[11]郭彩娟,何斌,刘成清,等.某博物馆结构防屈曲支撑减震分析[J].土木工程学报,2013,46(S1):38-44.Guo Caijuan,He Bin,Liu Chengqing,et al.The damping analysis of a museum structure with Buckling Restrained Braces[J].China Civil Engineering Journal,2013,46(S1):38-44.(in Chinese)
[12]侯双军,朱奇云,卢文胜,等.大底盘大空间复杂结构的抗震性能分析[J].结构工程师,2012,28(3):74-81.Hou Shuangjun,Zhu Qiyun,Lu Wensheng,et al.Analysis of seismic performance of a structure with large podium[J].Structural Engineers,2012,28(3):74-81.(in Chinese)