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Damage Estimation of Steel Moment-Resisting Frames by Endurance Time Method Using Damage-Based Target Time

机译:使用基于损伤的目标时间的耐久时间方法估算钢制耐弯框架的损伤

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摘要

In endurance time method, seismic performance of structures under artificial intensifying accelerograms is investigated. In this method, the time duration of excitation (target time) will be assigned on the basis of linear response spectra. Damage spectra, which are the variation of a damage index versus the system period, can be used effectively to modify the target time of the excitations. In this research, various damage indices for a number of steel moment frames are estimated using the endurance time method with two types of target time, and the results are compared with those corresponding to the scaled real earthquakes. It is observed that damage estimation of the frames via the endurance time method with initial target time is not always acceptable and can be considerably improved by applying the modified target time, obtained on the basis of damage spectra.
机译:在耐力时间法中,研究了人工增强加速度作用下结构的抗震性能。在这种方法中,激发的持续时间(目标时间)将基于线性响应谱进行分配。损伤谱是损伤指数相对于系统周期的变化,可以有效地用于修改激发的目标时间。在这项研究中,使用耐久时间方法和两种目标时间,估算了多个钢矩框架的各种破坏指数,并将其结果与按比例缩放的真实地震进行了比较。可以看出,通过耐久时间方法对具有初始目标时间的框架进行的损伤估计并不总是可以接受的,并且可以通过应用基于损伤谱获得的修改后的目标时间来显着改善。

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