The diagrid structural systems are mainly used for their structural capabilities and architectural aesthetic possibilities which are provided by the unique geometric configurations of these systems. However, the seismic performance factors of these structural systems are not yet explicitly recommended in the existing building codes. In this study, the seismic performance factors (SPFs) of 6- to 24-story steel diagrid structures are determined considering the post-buckling behavior of diagonal members in compression. Also, the effect of change in span length and the diagonal angles on the SPFs of diagrid structures is studied. The ATC-19 coefficient method is used for calculating the SPFs while FEMA P-695 approach is adopted for evaluating the accuracy of the computed factors. Also, the seismic collapse capacity of these structures considering uncertainties in ground motion, modeling, design, and test data is evaluated based on the FEMA P-695 methodology. The OpenSees software is used for modeling and performing the numerical analyses. The obtained results indicate that by increasing the height of diagrid structures, the over-strength, the response modification factor and the median collapse intensity decrease while the ductility factor increases. It is also concluded that the adjusted collapse margin ratios of the diagrid archetypes are larger than the limits suggested by FEMA P-695.

中文翻译：

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使用FEMA P-695和ATC-19程序评估钢斜交结构系统的抗震性能因子

斜交结构系统主要用于其结构能力和建筑美学可能性，这些可能性是由这些系统的独特几何构造提供的。但是，现有建筑规范中尚未明确建议使用这些结构系统的抗震性能因素。在这项研究中，考虑到对角构件在压缩中的后屈曲特性，确定6至24层钢斜交结构的抗震性能因子（SPF）。此外，研究了跨距长度和对角线变化对斜交结构SPF的影响。ATC-19系数法用于计算SPF，而FEMA P-695方法用于评估计算因子的准确性。也，基于FEMA P-695方法，评估了考虑地面运动，建模，设计和测试数据不确定性的这些结构的地震倒塌能力。OpenSees软件用于建模和执行数值分析。所得结果表明，通过增加斜交结构的高度，超强度，响应修正因子和中值塌陷强度降低，而延性因子则增加。还得出结论，斜交原型的调整后坍塌裕度比大于FEMA P-695建议的极限。所得结果表明，通过增加斜交结构的高度，超强度，响应修正因子和中值塌陷强度降低，而延性因子则增加。还得出结论，斜交原型的调整后塌陷裕度比大于FEMA P-695建议的极限。所得结果表明，通过增加斜交结构的高度，超强度，响应修正因子和中值塌陷强度降低，而延性因子则增加。还得出结论，斜交原型的调整后的塌陷裕度比大于FEMA P-695建议的极限。