振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2014年
5期
155-159,199
,共6页
地震动记录%增量动力方法%特征周期%地震持时
地震動記錄%增量動力方法%特徵週期%地震持時
지진동기록%증량동력방법%특정주기%지진지시
ground motion record%incremental dynamic method%characteristic period%earthquake duration
地震动记录的选择是增量动力分析的基础性工作。为了研究地震动记录的频谱特性和持时对增量动力分析结果的影响，总结了四种常用的计算地震动记录特征周期方法，建立了地震记录分组，进行了反应谱比较，以建立的地震记录分组为地震输入，结合算例进行了IDA分析，比较了IDA曲线和地震易损性曲线的差异。在此基础上，按两种地震持时原则输入进行IDA分析，分析了地震记录持时对IDA结果的影响。研究结果表明，地震记录频谱特性对IDA的数值大小和离散程度存在较大影响，足够的持时输入有助于获得稳定性好的IDA结果。
地震動記錄的選擇是增量動力分析的基礎性工作。為瞭研究地震動記錄的頻譜特性和持時對增量動力分析結果的影響，總結瞭四種常用的計算地震動記錄特徵週期方法，建立瞭地震記錄分組，進行瞭反應譜比較，以建立的地震記錄分組為地震輸入，結閤算例進行瞭IDA分析，比較瞭IDA麯線和地震易損性麯線的差異。在此基礎上，按兩種地震持時原則輸入進行IDA分析，分析瞭地震記錄持時對IDA結果的影響。研究結果錶明，地震記錄頻譜特性對IDA的數值大小和離散程度存在較大影響，足夠的持時輸入有助于穫得穩定性好的IDA結果。
지진동기록적선택시증량동력분석적기출성공작。위료연구지진동기록적빈보특성화지시대증량동력분석결과적영향，총결료사충상용적계산지진동기록특정주기방법，건립료지진기록분조，진행료반응보비교，이건립적지진기록분조위지진수입，결합산례진행료IDA분석，비교료IDA곡선화지진역손성곡선적차이。재차기출상，안량충지진지시원칙수입진행IDA분석，분석료지진기록지시대IDA결과적영향。연구결과표명，지진기록빈보특성대IDA적수치대소화리산정도존재교대영향，족구적지시수입유조우획득은정성호적IDA결과。
The selection of ground motion records is the basis of incremental dynamic analysis (IDA ).In order to study the influence of spectral characteristics and duration of ground motions on results of IDA,four conventional methods to calculate the characteristic period of ground motions were introduced,with these methods the record groups of ground motions were selected,and their response spectra were compared.IDA was performed taking the selected ground motions as imputs,then the IDA curves and the fragility curves of earthquake were compared.On this basis,the influnece of earthquake duration on IDA was analysed according to two duration principles.It was shown from the results that the spectral characteristics of ground motions influence evidently not only the magnitudes but also the level of dispersion of IDA,and sufficient duration time is good for the stability of results of IDA.
