A Framework for Sustainable Seismic Design of Earthquake-Resisting Structures: Foundational Principles of Plasticity, Sequential Yielding, and Post-Earthquake Realignment and Repair
Abstract
Abstract This paper introduces a foundational framework for Sustainable Seismic Design (SSD) of structures to address a critical gap in the development of repairable earthquake-resisting structures. Although recent advances have led to the emergence of resilient structural systems, the field has lacked a unified set of guiding principles. The proposed framework addresses this need by establishing three fundamental pillars: plasticity, sequential yielding, and an explicit focus on enabling Post-Earthquake Re-alignment and Repair (PERR). Through the development of simplified analytical models, this study establishes the theoretical basis for considering the capacity for PERR as a fundamental prerequisite for achieving truly sustainable seismic performance. The framework defines the primary objectives of SSD and illustrates how purpose-specific plastic design can be employed to develop low-damage structural systems that promote both recenterability and repairability, thereby moving beyond conventional seismic design approaches that often rely on accepting significant structural damage following major earthquakes. Although the proposed principles are established and examined using a simplified Single-Degree-of-Freedom (SDOF) model, they provide a conceptual basis for the development and evaluation of advanced resilient systems, including post-tensioned self-centering frames and rocking wall systems. The framework further identifies the key considerations, preconditions, and…
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