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This study introduces a simple and efficient method to determine the peak floor acceleration (PFA) at different performance levels for three types of plane reinforced concrete (RC) structures: moment-resisting frames (MRFs), infilled–moment-resisting frames (I-MRFs), and wall-frame dual systems (WFDSs). By associating the structural maximum PFA response with the deformation response, the acceleration-sensitive nonstructural components, and the building contents, can be designed to adhere to the performance-based seismic design of the supporting structure. Thus, the proposed method can accompany displacement-based seismic design methods to design acceleration-sensitive nonstructural elements to comply with the deformation target of the supporting structure. The PFA response shape is represented by line segments defined by key points corresponding to certain floor levels. These key points are defined by explicit empirical expressions developed herein. The maximum PFA response is correlated with the maximum interstory drift ratio (IDR) and other vital characteristics of the supporting structure such as the fundamental period. The proposed expressions are established based on extensive nonlinear dynamic analyses of 19 MRFs, 19 WFDSs, and 19 I-MRFs under 100 far-fault ground motions scaled to capture different deformation targets. Realistic examples demonstrate the efficiency of the proposed method to assess the PFA response at a given IDR, making the method suitable in the framework of performance-based design.

A performance-based hybrid force-displacement (HFD) seismic design method is proposed for three types of reinforced concrete structures, i.e., moment resisting frames, frame with infills and wall-frame dual systems. HFD is a force-based method which controls with high accuracy both structural and non-structural deformation limits, since, both limits are input variables for the initiation of the design. This is accomplished by constructing explicit empirical expressions for a behavior (strength reduction) factor, which incorporates target non-structural and structural deformation metrics such as inter-storey drift ratio and member plastic rotation. Use of this factor in conjunction with an elastic acceleration spectrum can produce designs in one-step, by just conducting a strength checking, since the deformation restrictions are automatically satisfied. Those expressions for the behavior factor in terms of target deformation metrics, number of storeys, column to beam strength ratios, beam to column and column-to-wall stiffness ratios, respectively, are derived through extensive parametrical studies involving non-linear dynamic analysis of the above appropriately modeled structures under 100 ground motions scaled for different deformation targets. The proposed HFD method is demonstrated and validated with realistic design examples, which show its advantages over the force-based design method of the European seismic design code, Eurocode 8.