CAJ | 학술논문

根据弹塑性反应谱理论,按照非线性恢复力模型的等效阻尼比和位移延性的关系,以单质点弹塑性反应分析结果为依据,建立基于等效阻尼比的隔震结构弹塑性反应谱.进一步比较弹塑性反应谱和我国规范得到的反应谱,结果显示规范的加速度反应谱在长周期段谱值过大,阻尼衰减系数也较大.基于单质点弹塑性地震分析的结果,在我国规范反应谱公式的基础上提出的隔震结构弹塑性反应谱公式.最后通过对5层钢框架隔震结构模型进行振动台试验、数值时程分析、规范反应谱计算、以及用弹塑性反应谱进行计算.结果表明,时程分析法的分析结果和振动台试验的结果比较接近,而按照规范反应谱的等效线形化方法计算出的结果与振动台试验的结果有一些偏差,弹塑性反应谱的地震反应更加接近试验实测的结果,表明了新提出的弹塑性反应谱进行隔震结构的地震反应分析时具有良好的计算精度.
근거탄소성반응보이론,안조비선성회복력모형적등효조니비화위이연성적관계,이단질점탄소성반응분석결과위의거,건립기우등효조니비적격진결구탄소성반응보.진일보비교탄소성반응보화아국규범득도적반응보,결과현시규범적가속도반응보재장주기단보치과대,조니쇠감계수야교대.기우단질점탄소성지진분석적결과,재아국규범반응보공식적기출상제출적격진결구탄소성반응보공식.최후통과대5층강광가격진결구모형진행진동태시험、수치시정분석、규범반응보계산、이급용탄소성반응보진행계산.결과표명,시정분석법적분석결과화진동태시험적결과비교접근,이안조규범반응보적등효선형화방법계산출적결과여진동태시험적결과유일사편차,탄소성반응보적지진반응경가접근시험실측적결과,표명료신제출적탄소성반응보진행격진결구적지진반응분석시구유량호적계산정도.
Based on the theory of elastic-plastic response spectrum and the relationship between displacement ductility and equivalent damping ratio of a non-linear restoring force model, according to the results of a single-mass elasto-plastic response analysis, the elasto-plastic response spectrum of an isolated structure was established. Further, compared with the standard response spectrum of our country, the results showed that the values of the elasto-plastic acceleration response spectra in the long period cycles are overhigh, damping attenuation coefficients are also larger. Based on the results of a single-mass elasto-plastic seismic analysis, the elasto-plastic response spectrum formula of isolated structures was established. At last, shaking table tests of a 5-story steel isolated structure, the earthquake responses of the isolated structure using the new suggested acceleration response equation and the time history analysis method were compared, and the results obtained by using the modified long period response spectrum were consist with those from time history analyses and tests; the results by using the proposed equation of response spectrum had a higher precesion for isolated structures.