Residential buildings in most cities, which make up the most significant percentage of buildings, generally contain the most financial and human losses in the face of strong earthquakes. The purpose of this study is to investigate the possibility of the collapse of intermediate and unique steel moment frames against maximum ground excitations. In this study, through the first two steps of PEER methodology, using four steel structural frames with intermediate and unique moment frames, after designing according to the codes of national building regulations of Iran and standard 2800, this probabilistic evaluation was used to ensure their safety against collapse. In the next step, to deepen the results, 7 other sites from Tehran were selected. Their hazard spectrum was used to calculate the probability of collapse. In the end, it was observed that, with the reduction of the number of structural floors, the IDA curves at the lower IM level become horizontal in this project. The results showed that some of the 5-story steel structures under study in some parts of Tehran have a higher probability of collapse than acceptable.

中文翻译：

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MCE 下德黑兰直接和特殊矩框架的坍塌概率

大多数城市中的住宅建筑占建筑物的最大比例，通常在强震面前承受最大的经济和人员损失。这项研究的目的是调查中间和独特的钢力矩框架在最大地面激励下倒塌的可能性。在本研究中，通过 PEER 方法的前两个步骤，使用具有中间和独特弯矩框架的四个钢结构框架，根据伊朗国家建筑法规和标准 2800 进行设计后，使用这种概率评估来确保它们的安全反对崩溃。在下一步中，为了深化结果，选择了来自德黑兰的其他 7 个站点。他们的危险谱被用来计算倒塌的概率。最后观察到，随着结构层数的减少，本项目下IM层的IDA曲线变得水平。结果表明，德黑兰某些地区正在研究的一些 5 层钢结构的倒塌概率高于可接受的水平。