振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2015年
16期
195-199,218
,共6页
等位移准则%多联连续梁桥%多模态推倒分析%目标位移
等位移準則%多聯連續樑橋%多模態推倒分析%目標位移
등위이준칙%다련련속량교%다모태추도분석%목표위이
equal displacement rule%multiple multi-span continuous bridges%rapid modal pushover analysis rapid (MPA)%target displacement
提出针对多联连续梁桥的快速 MPA 方法。通过等位移准则计算控制点目标位移，结合 MPA 方法进行多联连续梁桥快速多模态推倒分析，能极大简化多模态推倒分析步骤。以某3联连续梁桥为例，将等位移准则计算的控制点位移近似作为多模态推倒分析目标位移，用快速 MPA 方法对其抗震性能进行评估。与非线性动力时程分析结果对比表明，快速 MPA 方法可有效评估多联连续梁桥抗震性能。
提齣針對多聯連續樑橋的快速 MPA 方法。通過等位移準則計算控製點目標位移，結閤 MPA 方法進行多聯連續樑橋快速多模態推倒分析，能極大簡化多模態推倒分析步驟。以某3聯連續樑橋為例，將等位移準則計算的控製點位移近似作為多模態推倒分析目標位移，用快速 MPA 方法對其抗震性能進行評估。與非線性動力時程分析結果對比錶明，快速 MPA 方法可有效評估多聯連續樑橋抗震性能。
제출침대다련련속량교적쾌속 MPA 방법。통과등위이준칙계산공제점목표위이，결합 MPA 방법진행다련련속량교쾌속다모태추도분석，능겁대간화다모태추도분석보취。이모3련련속량교위례，장등위이준칙계산적공제점위이근사작위다모태추도분석목표위이，용쾌속 MPA 방법대기항진성능진행평고。여비선성동력시정분석결과대비표명，쾌속 MPA 방법가유효평고다련련속량교항진성능。
Rapid MPA method was proposed for multiple multi-span continuous bridges.In the rapid MPA,target displacements at control points were computed according to the rule of equal displacement,so the rapid MPA method can greatly simplify the procedure of MPA.For multiple multi-span continuous bridges,the control points'displacements computed in accordance with the equal displacement rule were used as the approximation of modal pushover target displacements.The rapid MPA proposed has been carried out for seismic performance evaluation of the bridges.Compared with the time-history analysis,it turns out that the rapid MPA is capable of providing reasonable seismic responses of multiple multi-span continuous bridges.
