ABSTRACT

This study is focussed on the collapse performance assessment of steel truss moment frames (STMFs) with Vierendeel panels. The main parameters varied in this numerical study are the height of structures, bay width, aspect ratio of special segments, and number of ductile panels within the special segments. Incremental dynamic analyses are performed on twenty number of STMF archetypes having the overall height and aspect ratio of special segments exceeding the limiting values recommended in the current design codes. Based on findings of this study, seismic performance factors, namely, overstrength factor, response modification factor, and deflection amplification factor for STMFs are recommended.

摘要

本研究的重点是对带有 Vierendeel 面板的钢桁架力矩框架 (STMF) 的倒塌性能评估。在这项数值研究中变化的主要参数是结构的高度、海湾宽度、特殊管段的纵横比以及特殊管段内的延性面板的数量。对 20 个 STMF 原型进行增量动态分析，这些原型的总高度和特殊节段的纵横比超过了当前设计规范中推荐的限制值。根据本研究的结果，推荐了STMFs的抗震性能因子，即超强度因子、响应修正因子和挠度放大因子。