昆明新国际机场主航站楼A区隔震效能分析
|
摘要
昆明新国际机场主航站楼A区为复杂大跨钢-混凝土组合结构,位于抗震设防烈度为8度的昆明市,经多方论证最终对该结构采用了基础隔震技术,建成后它将成为目前世界上最大的单体隔震建筑。本文采用ANSYS有限元程序建立结构分析模型,模型主要由非线性杆单元、壳单元和非线性的隔震单元组成。首先介绍了隔震方案的论证过程及隔震支座的布置对结构隔震效能的影响,然后介绍了用于时程分析的地震波的选取过程,最后通过多遇和罕遇烈度下的弹性时程分析,研究了该结构的变形、内力和隔震效果。计算结果表明,该结构不仅可以实现小震下"降一度"的减震目标,还可以满足大震下隔震层最大剪切位移的控制指标,隔震层的设计是合理的,结构在隔震后的抗震性能是可以满足要求的。
Building No.A of Kunming New International Airport is a complex steel-concrete hybrid structure.The airport is located in Kunming which seismic fortification intensity is 8 degree.By multi-analysis,base isolation technique is applied to the structure,and the building of airport will be the biggest monomer building in the world after its accomplishment.Using ANSYS,the structural analysis model,mainly composed of linear beams,linear shells and nonlinear isolators,is established.Demonstration of isolation scheme and influence of isolator's layout to the isolation efficiency is firstly introduced.And the selection processes of earthquake waves are introduced.Finally,the elastic time history analysis is carried out to study the seismic behavior and isolation efficiency of the structure under the frequent and rare intensity earthquakes.The results show that not only the cushioning goal of 'reduce 1 degree'under frequent earthquakes is achieved,but also the maximal shear displacement of isolator under rare earthquakes can pass the code requirements.The design of isolation layer is appropriate.The seismic performance of the structure after applying isolation technique can meet the challenge.
Building No.A of Kunming New International Airport is a complex steel-concrete hybrid structure.The airport is located in Kunming which seismic fortification intensity is 8 degree.By multi-analysis,base isolation technique is applied to the structure,and the building of airport will be the biggest monomer building in the world after its accomplishment.Using ANSYS,the structural analysis model,mainly composed of linear beams,linear shells and nonlinear isolators,is established.Demonstration of isolation scheme and influence of isolator's layout to the isolation efficiency is firstly introduced.And the selection processes of earthquake waves are introduced.Finally,the elastic time history analysis is carried out to study the seismic behavior and isolation efficiency of the structure under the frequent and rare intensity earthquakes.The results show that not only the cushioning goal of 'reduce 1 degree'under frequent earthquakes is achieved,but also the maximal shear displacement of isolator under rare earthquakes can pass the code requirements.The design of isolation layer is appropriate.The seismic performance of the structure after applying isolation technique can meet the challenge.
引文
[1]束伟农,朱忠义,柯长华,等.昆明新机场航站楼工程结构设计介绍[J].建筑结构,2009,39(5):12-17(ShuWeinong,Zhu Zhongyi,Ke Changhua,et al.Introductionof structural design of the Kunming new airport terminalbuilding[J].Building Structure,2009,39(5):12-17(inChinese))
[2]周锡元,韩淼,李大望,等.并联和串联基础隔震体系地震反应的某些特征[J].工程抗震,1995,12(4):1-5
[3]欧进萍,丁建华.油缸间隙式粘滞阻尼器理论与性能试验[J].地震工程与工程振动,1999,19(04):82-89(OuJinping,Ding Jianhua.Theory and performance experimentof viscous damper of clearance hydrocylinder[J].Earthquake Engineering and Engineering Vibration,1999,19(4):82-89(in Chinese))
[4]曾聪,陶忠,潘文,等.PTFE-不锈钢摩擦滑移隔震支座摩擦系数的影响因素研究[J].工程抗震与加固改造,2009,31(1):58-63(Zeng Cong,Tao Zhong,Pan Wen,etal.Research of the influence factors of the frictioncoefficient between PTFE and stainless steel plate of FPE[J].Earthquake Resistant Engineering and Retrofitting,2009,31(1):58-63(in Chinese))
[5]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010
[6]吴晓涵,原中晋,吕西林.上海浦东国际机场T2航站楼弹塑性时程分析[J].地震工程与工程振动,2008,28(8):70-75(Wu Xiaohan,Yuan Zhongjin,Lu Xilin.Elasto-plastic time history analysis of T2 building ofShanghai Pudong International Airport[J].EarthquakeEngineering and Engineering Vibration,2008,28(8):70-75(in Chinese))
[7]曾聪.昆明新机场航站楼关键减隔震技术——上柔下刚结构的隔震效能分析[D].昆明:昆明理工大学,2008
[2]周锡元,韩淼,李大望,等.并联和串联基础隔震体系地震反应的某些特征[J].工程抗震,1995,12(4):1-5
[3]欧进萍,丁建华.油缸间隙式粘滞阻尼器理论与性能试验[J].地震工程与工程振动,1999,19(04):82-89(OuJinping,Ding Jianhua.Theory and performance experimentof viscous damper of clearance hydrocylinder[J].Earthquake Engineering and Engineering Vibration,1999,19(4):82-89(in Chinese))
[4]曾聪,陶忠,潘文,等.PTFE-不锈钢摩擦滑移隔震支座摩擦系数的影响因素研究[J].工程抗震与加固改造,2009,31(1):58-63(Zeng Cong,Tao Zhong,Pan Wen,etal.Research of the influence factors of the frictioncoefficient between PTFE and stainless steel plate of FPE[J].Earthquake Resistant Engineering and Retrofitting,2009,31(1):58-63(in Chinese))
[5]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010
[6]吴晓涵,原中晋,吕西林.上海浦东国际机场T2航站楼弹塑性时程分析[J].地震工程与工程振动,2008,28(8):70-75(Wu Xiaohan,Yuan Zhongjin,Lu Xilin.Elasto-plastic time history analysis of T2 building ofShanghai Pudong International Airport[J].EarthquakeEngineering and Engineering Vibration,2008,28(8):70-75(in Chinese))
[7]曾聪.昆明新机场航站楼关键减隔震技术——上柔下刚结构的隔震效能分析[D].昆明:昆明理工大学,2008
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心