Performance Based Plastic Design (PBPD) method overcomes implicit consideration of inelastic behavior of structural system designed by existing force/strength based approach. The effectiveness of PBPD for various Lateral Load Resisting Systems (LLRS) is ascertained through research in the past decade. However, the validated PBPD designs of these LLRS are still based on elastic design spectra which lead to a conservative estimate of seismic demands. Hence, there is need to develop the inelastic constant ductility response spectra for such structural systems. This paper aims to propose use of inelastic constant ductility response spectra for PBPD of Steel Moment Resisting Frame (SMRF). 20 Large Magnitude Small Radial -distance (LMSR) ground motion records are used to develop these inelastic constant ductility response spectra for various PBPD cases of 3 and 9-storey SAC-steel project buildings. The seismic performance of these PBPD cases using both inelastic constant ductility response spectra, as well as elastic design spectra, are evaluated by carrying out Nonlinear Static Pushover Analysis (NSPA) and Nonlinear Time History Analysis (NTHA). The results show that PBPD cases using inelastic constant ductility response spectra are more efficient and effective in achieving the target ductility and pre-selected yield mechanism as the performance objectives over elastic design spectra.

基于性能的塑性设计（PBPD）方法克服了现有基于力/强度的方法设计的结构系统非弹性行为的隐式考虑。过去十年的研究已经确定了 PBPD 对各种横向负载抵抗系统 (LLRS) 的有效性。然而，这些 LLRS 的经过验证的 PBPD 设计仍然基于弹性设计谱，这导致对地震需求的估计保守。因此，需要开发此类结构系统的非弹性恒定延展性响应谱。本文旨在提出使用非弹性恒延性响应谱来研究钢抗弯框架（SMRF）的 PBPD。使用 20 个大震级小径向距离 (LMSR) 地震动记录来开发 3 层和 9 层 SAC 钢项目建筑的各种 PBPD 案例的非弹性恒定延性响应谱。通过执行非线性静态 Pushover 分析 (NSPA) 和非线性时程分析 (NTHA)，使用非弹性常延性响应谱和弹性设计谱来评估这些 PBPD 案例的抗震性能。结果表明，与弹性设计谱相比，使用非弹性恒定延性响应谱的 PBPD 案例在实现目标延性和预选屈服机制作为性能目标方面更加高效和有效。