利用承受时间方法评估钢框架的结构损伤

在持续时间方法中，结构受到逐渐加强的地面加速度影响，并根据其在预定耐力标准中所能承受的最长时间判断其抗震性能。承受时间方法是将损伤指数作为耐力准则。将钢框架非线性时程分析中得到的各种损伤指数的数值，与同样加速度水平下持续时间方法中得到结果相对比。

Estimating Structural Damage of Steel Moment Frames by Endurance Time Method

In Endurance Time (ET) method,structures are subjected to gradually intensifying accelerograms and their performance is judged based on the maximum time duration in which they can satisfy the predefined endurance criteria. Damage indexes are used in ET method as the endurance criteria. In this paper,correlation between the values of various damage indexes as obtained from nonlinear time-history analysis of steel moment frames subjected to scaled earthquakes are compared with those from ET method at the same...