振动与冲击
振動與遲擊
진동여충격
Journal of Vibration and Shock
2015年
21期
162-169
,共8页
相邻结构%地震易损性%Maxwell 阻尼器%增量动力分析%性能水平
相鄰結構%地震易損性%Maxwell 阻尼器%增量動力分析%性能水平
상린결구%지진역손성%Maxwell 조니기%증량동력분석%성능수평
adjacent structures%seismic fragility%Maxwell damper%incremental dynamic analysis (IDA )%performance level
对连接Maxwell模型的两相邻钢筋混凝土框架结构建立二维模型，考虑了梁柱单元及阻尼器单元在大震作用下的非线性行为，通过大量的增量动力分析（IDA），研究了 Maxwell 阻尼器优化参数理论表达式在结构经历初始弹性、屈服直至倒塌全过程的适用性，并基于 IDA 分析的结果，对结构未控和控制情况下的地震易损性曲线进行了比较分析，从性能评估的角度研究了 Maxwell 阻尼器对相邻结构在不同地震波及不同地震动强度水平下的控制效果。通过相邻结构在不同地震动强度水平下的顶层位移时程发现，Maxwell 阻尼器在小震作用下对两结构顶层位移控制效果均较好，但是在大震作用下，仅对结构2有明显的控制效果；由控制和未控时的相邻结构的地震易损性曲线亦可看出，Maxwell 阻尼器对结构2在各性能水平下的控制效果均优于结构1。最后，通过大量的参数化分析，基于相邻结构地震易损性最小原则提出了合适的阻尼器参数值。
對連接Maxwell模型的兩相鄰鋼觔混凝土框架結構建立二維模型，攷慮瞭樑柱單元及阻尼器單元在大震作用下的非線性行為，通過大量的增量動力分析（IDA），研究瞭 Maxwell 阻尼器優化參數理論錶達式在結構經歷初始彈性、屈服直至倒塌全過程的適用性，併基于 IDA 分析的結果，對結構未控和控製情況下的地震易損性麯線進行瞭比較分析，從性能評估的角度研究瞭 Maxwell 阻尼器對相鄰結構在不同地震波及不同地震動彊度水平下的控製效果。通過相鄰結構在不同地震動彊度水平下的頂層位移時程髮現，Maxwell 阻尼器在小震作用下對兩結構頂層位移控製效果均較好，但是在大震作用下，僅對結構2有明顯的控製效果；由控製和未控時的相鄰結構的地震易損性麯線亦可看齣，Maxwell 阻尼器對結構2在各性能水平下的控製效果均優于結構1。最後，通過大量的參數化分析，基于相鄰結構地震易損性最小原則提齣瞭閤適的阻尼器參數值。
대련접Maxwell모형적량상린강근혼응토광가결구건립이유모형，고필료량주단원급조니기단원재대진작용하적비선성행위，통과대량적증량동력분석（IDA），연구료 Maxwell 조니기우화삼수이론표체식재결구경력초시탄성、굴복직지도탑전과정적괄용성，병기우 IDA 분석적결과，대결구미공화공제정황하적지진역손성곡선진행료비교분석，종성능평고적각도연구료 Maxwell 조니기대상린결구재불동지진파급불동지진동강도수평하적공제효과。통과상린결구재불동지진동강도수평하적정층위이시정발현，Maxwell 조니기재소진작용하대량결구정층위이공제효과균교호，단시재대진작용하，부대결구2유명현적공제효과；유공제화미공시적상린결구적지진역손성곡선역가간출，Maxwell 조니기대결구2재각성능수평하적공제효과균우우결구1。최후，통과대량적삼수화분석，기우상린결구지진역손성최소원칙제출료합괄적조니기삼수치。
A two-dimensional model of two adjacent reinforced concrete frames connected with Maxwell dampers was set up considering the nonlinear behavior of beam-column elements and damper ones under major earthquakes. Through a lot of incremental dynamic analysis (IDA),the applicability of Maxwell damper optimal parameters theoretical expressions in the whole process from initial elastic,yield to final collapse of the structures was investigated.Based on the results of IDA,the comparative analysis of seismic fragility curves of the structures with control and without control was done.From the perspective of performance evaluation,the control effects of Maxwell dampers on the two adjacent structures were studied under different seismic waves and different seismic intensities.Through time history analysis of top floor displacements of the adjacent structures under different seismic intensities,it was shown that the control effects of Maxwell dampers on the top floor displacements of the two adjacent structures are good under small earthquakes;however, under big earthquakes,only the second structure can be controlled significantly;the control effects of Maxwell dampers on the second structure under each performance level are superior to those on the first structure.Finally,through a large number of parametric analyses and based on the principle of the minimum seismic fragility of adjacent structures,the suitable parameter values of Maxwell dampers were proposed.
