摘要
综述了推覆分析的发展历史、基本原理及研究现状,明确阐释在线弹性阶段,推覆分析等同于第1振型的反应谱分析。屈服后,使用经过动力非线性分析校准的经验系数和线性等效,把反应谱理论推广到非线性分析中。分析得到的目标位移及层位移曲线等具有统计意义上平均地震反应的数学意义。讨论了推覆分析的局限性及其对策。结合中国规范的实际情况,给出推覆分析的实施要点。最后,借鉴美国性能设计的研究成果,使用PERFORM-3D成功地应用推覆分析对高烈度设防区超限高层建筑的抗震性能作出评估。
After briefly reviewing the development history, basic principle and current state of Push-over analysis, it directly pointed out that the Push-over analysis is equivalent in the elastic range to the response spectrum analysis only by using the first mode. After yielding, it can be interpreted as an extension of response spectrum analysis for linear structures to the non-linear range, by virtue of the empirical coefficients calibrated by a large number of dynamic non-linear analysis and equivalent linearization. The target displacement and story displacement pattern along the height of the building obtained by the Push-over analysis are the mean of the seismic responses in the statistical meaning. The limitations of Push-over and the measures to be taken were also discussed. In combination of the current Chinese codes, guidelines for implementation of the Push-over analysis were given. Finally, the seismic performance of an irregular tall building in high seismicity zone was successfully estimated by using the Push-over analysis procedure compiled in PERFORM-3D in accordance with the acceptance criteria provided in ASCE 41.
出处
《建筑结构》
CSCD
北大核心
2012年第11期1-10,共10页
Building Structure
