粘弹性阻尼器消能结构基于位移设计
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摘要
现有粘弹性阻尼结构设计方法比较繁琐,精度有限.根据粘弹性阻尼器阻尼系数和刚度的相关性,提出简单的迭代方法,基于结构顶点位移,直接确定所需粘弹性阻尼器的附加阻尼比,使粘弹性阻尼结构设计得到有效的简化.该方法适应于新建消能结构和准备用粘弹性阻尼器加固改造的已建结构,对其设计步骤分别进行了归纳.选用1栋5层的新建结构和1栋10层已建结构对该方法进行了验证.时程分析和振型Pushover分析(MPA)结果表明该方法在Pushover适用范围内可以取得满意的精度.
The existing design methods for passive energy dissipation systems with visco-elastic dampers are either complex or of biggish errors.This paper presents a displacement-based design method for energy dissipation systems with visco-elastic dampers.According to the correlativity between the damping coefficient of visco-elastic dampers and their stiffness,the paper directly determines the expected supplemental damping ratio through simple iteration,thus simplifying the structure design of visco-elastic dampers.This method can be applied to new energy dissipation systems and seismic retrofitting of buildings.After the design steps are summed up,the presented method is applied to a 5-story new building and the seismic retrofitting of a 10-story building for verification.The results of time history analysis and mode Pushover analysis show that the method can help to achieve satisfactory accuracy within the range suitable for Pushover.
The existing design methods for passive energy dissipation systems with visco-elastic dampers are either complex or of biggish errors.This paper presents a displacement-based design method for energy dissipation systems with visco-elastic dampers.According to the correlativity between the damping coefficient of visco-elastic dampers and their stiffness,the paper directly determines the expected supplemental damping ratio through simple iteration,thus simplifying the structure design of visco-elastic dampers.This method can be applied to new energy dissipation systems and seismic retrofitting of buildings.After the design steps are summed up,the presented method is applied to a 5-story new building and the seismic retrofitting of a 10-story building for verification.The results of time history analysis and mode Pushover analysis show that the method can help to achieve satisfactory accuracy within the range suitable for Pushover.
引文
[1]中华人民共和国国家标准.建筑抗震设计规范(GB50011-2001)[S].北京:中国建筑工业出版社,2001.
[2]NEHRP-National Earthquake Hazard Reduction Program.NEHRP Recommended Provisions for Seismic Regulations for New Buildings andOther Structures[R].Washington D C:Federal Emergency Management Agency,1994.
[3]NEHRP-National Earthquake Hazard Reduction Program.NEHRP Recommended Provisions for Seismic Regulations for New Buildings andOther Structures[R].Washington D C:Federal Emergency Management Agency,2000.
[4]Building Seismic Safety Council.NEHRP Guidelines for the Seismic Rehabilitation of Buildings[S].Washington D C:Federal EmergencyManagement Agency,1997.
[5]Soong T T,Dargush G F.结构工程中的被动消能体系[M].董平译.北京:科学出版社,2005:92-124.
[6]Kim J K,Choi H H.Displacement-Based Design of Supplemental Dampers for Seismic Retrofit of a Framed Structure[J].Journal ofStructural Engineering,ASCE,2006,132(6):873-883.
[7]Chopra A K,Goel R K.Evaluation of NSP to Estimate Seismic Deformation:SDF System[J].Journal of Structural Engineering,ASCE,1999,126(4):482-490.
[8]邹银生,陈敏,冯承辉.粘滞阻尼器消能减震结构的简化设计[J].湖南大学学报,2005,32(6):1-5.
[9]陈敏,邹银生,冯承辉,等.粘滞阻尼器被动消能体系基于位移设计方法[J].铁道科学与工程学报,2006,3(5):75-81.
[10]Ramirez O M.Development and Evaluation of Simplified Procedures for the Analysis and Design of Buildings with Passive Energy Dissipation Systems[D].Buffalo:State University of New York at Buffalo,2000.
[11]Kasai K,Fu Y M,Watanabe A.Passive Control Systems for Seismic Damage Mitigation[J].Journal of Structural Engineering,1998,124(5).
[12]马东辉,李虹,苏经宇,等.阻尼比对设计反应谱的影响分析[J].工程抗震,1995(4):35-40.
[13]欧进萍,吴波.被动耗能器减振系统的研究与应用进展[].地震工程与工程振动,1996,16(3):72-96.
[14]Krawinkler H,Senerviratna G D P K.Pros and cons of a push-over analysis of seismic performance evaluation[J].Engineering Structures,1998,20(4-6):452-464.
[15]杨溥.基于位移的结构地震反应分析方法研究[D].重庆:重庆建筑大学建筑工程学院,1999.
[16]Valles R E,Reinhorn A M,Kunnath S K,et al.IDARC2D Version 6.0:A computer program for the inelastic damage analysis of buildings[R].Buffalo:StateUniversity of New York at Buffalo,2004.
[17]Chopra A K,Goel R K.A modal pushover analysis procedure for estimating seismic demands for buildings:Theory and Preliminary Evaluation[R].PacificEarthquake Engineering Research Center,University of California,Berkeley,2001.
[2]NEHRP-National Earthquake Hazard Reduction Program.NEHRP Recommended Provisions for Seismic Regulations for New Buildings andOther Structures[R].Washington D C:Federal Emergency Management Agency,1994.
[3]NEHRP-National Earthquake Hazard Reduction Program.NEHRP Recommended Provisions for Seismic Regulations for New Buildings andOther Structures[R].Washington D C:Federal Emergency Management Agency,2000.
[4]Building Seismic Safety Council.NEHRP Guidelines for the Seismic Rehabilitation of Buildings[S].Washington D C:Federal EmergencyManagement Agency,1997.
[5]Soong T T,Dargush G F.结构工程中的被动消能体系[M].董平译.北京:科学出版社,2005:92-124.
[6]Kim J K,Choi H H.Displacement-Based Design of Supplemental Dampers for Seismic Retrofit of a Framed Structure[J].Journal ofStructural Engineering,ASCE,2006,132(6):873-883.
[7]Chopra A K,Goel R K.Evaluation of NSP to Estimate Seismic Deformation:SDF System[J].Journal of Structural Engineering,ASCE,1999,126(4):482-490.
[8]邹银生,陈敏,冯承辉.粘滞阻尼器消能减震结构的简化设计[J].湖南大学学报,2005,32(6):1-5.
[9]陈敏,邹银生,冯承辉,等.粘滞阻尼器被动消能体系基于位移设计方法[J].铁道科学与工程学报,2006,3(5):75-81.
[10]Ramirez O M.Development and Evaluation of Simplified Procedures for the Analysis and Design of Buildings with Passive Energy Dissipation Systems[D].Buffalo:State University of New York at Buffalo,2000.
[11]Kasai K,Fu Y M,Watanabe A.Passive Control Systems for Seismic Damage Mitigation[J].Journal of Structural Engineering,1998,124(5).
[12]马东辉,李虹,苏经宇,等.阻尼比对设计反应谱的影响分析[J].工程抗震,1995(4):35-40.
[13]欧进萍,吴波.被动耗能器减振系统的研究与应用进展[].地震工程与工程振动,1996,16(3):72-96.
[14]Krawinkler H,Senerviratna G D P K.Pros and cons of a push-over analysis of seismic performance evaluation[J].Engineering Structures,1998,20(4-6):452-464.
[15]杨溥.基于位移的结构地震反应分析方法研究[D].重庆:重庆建筑大学建筑工程学院,1999.
[16]Valles R E,Reinhorn A M,Kunnath S K,et al.IDARC2D Version 6.0:A computer program for the inelastic damage analysis of buildings[R].Buffalo:StateUniversity of New York at Buffalo,2004.
[17]Chopra A K,Goel R K.A modal pushover analysis procedure for estimating seismic demands for buildings:Theory and Preliminary Evaluation[R].PacificEarthquake Engineering Research Center,University of California,Berkeley,2001.
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