安装有自复位耗能摇摆柱的RC框架动力弹塑性分析
|
摘要
根据Roh提出的摇摆柱具有耗能能力较小且框架中附加对角阻尼器可能会影响建筑使用功能的特点,提出在摇摆柱的上下端安装一种自复位及耗能于一体的小型隅撑,构成自复位耗能摇摆柱,并将其应用于传统框架中构成一种新型的自复位框架结构.利用有限元软件OpenSees分别对建立的5个钢筋混凝土单榀框架模型在多遇、设防、罕遇地震作用下进行弹塑性动力时程分析计算.分析结果表明,带有自复位耗能摇摆柱的RC框架的层间加速度及残余位移与传统框架相比,明显减小了;罕遇地震下层位移及层间位移角略小于传统框架.
According to the view point presented by Roh that the rocking columns have less energy dissipation ability and additional diagonal damper in the frame may affect the utility function of the construction, it is presented to install a small-size corner brace at the upper and lower ends of the rocking column forming a self-centering energy-dissipative rocking column, which will gather the self-centering and energy dissipation into a unity and will be used in the traditional frame to form a new kind of self-centering framed structure. Dynamic time-history analysis and calculation of five reinforced concrete single-piece frame models established is carried out for the case of common, preventive, and rare earthquake by using finite element software OpenSees. Analysis result shows that storey acceleration and residual displacement of RC frame with self-centering energy-dissipative rocking column will be significantly reduced when compared to conventional structures. In the case of rare earthquake, the storey displacement and storey drifts will be slightly less than that of traditional frame.
According to the view point presented by Roh that the rocking columns have less energy dissipation ability and additional diagonal damper in the frame may affect the utility function of the construction, it is presented to install a small-size corner brace at the upper and lower ends of the rocking column forming a self-centering energy-dissipative rocking column, which will gather the self-centering and energy dissipation into a unity and will be used in the traditional frame to form a new kind of self-centering framed structure. Dynamic time-history analysis and calculation of five reinforced concrete single-piece frame models established is carried out for the case of common, preventive, and rare earthquake by using finite element software OpenSees. Analysis result shows that storey acceleration and residual displacement of RC frame with self-centering energy-dissipative rocking column will be significantly reduced when compared to conventional structures. In the case of rare earthquake, the storey displacement and storey drifts will be slightly less than that of traditional frame.
引文
[1] PRIESTLEY M J N,TAO J.Seismic response of precast prestressed concrete frames with partially debonded tendons [J].PCI Journal,1993,38(1):58-69.
[2] EI-SHEIKH M T,SAUSE R,PESSIKI S,et al.Seismic behavior and design of unbounded post-tensioned precast concrete frames [J].PCI Journal,1999,44(3):54-71.
[3] ROH H.Seismic behavior of structures using rocking column and viscous dampers [D].Buffalo,US: University at Buffalo,The State University of New York,2007.
[4] ROH M,REINHORN A M.Analytical modeling of rocking elements [J].Engineering Structure,2009,31(5):1179-1189.
[5] ROH M,REINHORN A M.Nonlinear static analysis of structures with rocking columns [J].Journal of Structural Engineering,2010,136(5):532-542.
[6] ROH M,REINHORN A M.Modeling and seismic response of structures with concrete rocking columns and viscous dampers [J] .Engineering Structures,2010,32(8):2096-2107.
[7] ROH M,CIMELLARO G P.Seismic fragility evaluation of RC frame structures retrofitted with controlled concrete rocking column and damping technique [J].Journal of Earthquake Engineering,2011,15(7):1069-1082.
[8] KAM W Y,PAMPANIN S,PALERMO A,et al.Self-centering structural systems with combination of hysteretic and viscous energy dissipations [J].Earthquake Engineering & Structural Dynamics,2010,39(10):1083-1108.
[9] 武大洋.近场地震作用下轻型自复位消能摇摆刚架减震性能分析 [D].兰州:兰州理工大学,2013.
[10] CHRISTOPOULOS C,TREMBLAY R,KIM H J,et al.Self-centering energy dissipative bracing system for the seismic resistance of structures:development and validation [J].Journal of structural Engineering,2008,134(1):96-107.
[11] 谢钦,周臻,卢璐,等.自复位摩擦耗能支撑的套管长度误差对多层结构地震响应的影响 [J].土木工程学报,2014,47(1):96-101.
[12] Federal Emergency Management Agency.Quantification of building seismic performance factors:P695 [R].Washington DC:Federal Emergency Management Agency,2009.
[13] 中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010 [S].北京:中国建筑工业出版社,2010.
[2] EI-SHEIKH M T,SAUSE R,PESSIKI S,et al.Seismic behavior and design of unbounded post-tensioned precast concrete frames [J].PCI Journal,1999,44(3):54-71.
[3] ROH H.Seismic behavior of structures using rocking column and viscous dampers [D].Buffalo,US: University at Buffalo,The State University of New York,2007.
[4] ROH M,REINHORN A M.Analytical modeling of rocking elements [J].Engineering Structure,2009,31(5):1179-1189.
[5] ROH M,REINHORN A M.Nonlinear static analysis of structures with rocking columns [J].Journal of Structural Engineering,2010,136(5):532-542.
[6] ROH M,REINHORN A M.Modeling and seismic response of structures with concrete rocking columns and viscous dampers [J] .Engineering Structures,2010,32(8):2096-2107.
[7] ROH M,CIMELLARO G P.Seismic fragility evaluation of RC frame structures retrofitted with controlled concrete rocking column and damping technique [J].Journal of Earthquake Engineering,2011,15(7):1069-1082.
[8] KAM W Y,PAMPANIN S,PALERMO A,et al.Self-centering structural systems with combination of hysteretic and viscous energy dissipations [J].Earthquake Engineering & Structural Dynamics,2010,39(10):1083-1108.
[9] 武大洋.近场地震作用下轻型自复位消能摇摆刚架减震性能分析 [D].兰州:兰州理工大学,2013.
[10] CHRISTOPOULOS C,TREMBLAY R,KIM H J,et al.Self-centering energy dissipative bracing system for the seismic resistance of structures:development and validation [J].Journal of structural Engineering,2008,134(1):96-107.
[11] 谢钦,周臻,卢璐,等.自复位摩擦耗能支撑的套管长度误差对多层结构地震响应的影响 [J].土木工程学报,2014,47(1):96-101.
[12] Federal Emergency Management Agency.Quantification of building seismic performance factors:P695 [R].Washington DC:Federal Emergency Management Agency,2009.
[13] 中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010 [S].北京:中国建筑工业出版社,2010.