Development of Analysis-Design-Assessment Framework for Performance Based Seismic Design of Building Structures

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The objective of the proposed research is to develop a framework for elastic analysis, design, and inelastic performance assessment for performance based seismic design of building structures. In the conventional design approach life safety (i.e. force capacity) and serviceability (i.e. drift limit) are considered in the design process. Because the conventional design method is based on the linear elastic analysis, the method cannot realistically assess the performance of a structure subjected to earthquake excitation. In addition, the conventional code-complying prescriptive design is limited in meeting an owner's various performance needs such as expected economic loss associated with a certain intensity of earthquake event. In the performance-based design (PBD) approach, on the other hand, target performance requirements for various seismic hazard scenarios are defined, and a structure is designed to meet the requirements. In this process, the performance of the structure needs to be assessed based upon a realistic numerical model of the structure that can capture the inelastic behaviour of the structure up to failure. The proposed research aims at facilitating the PBD by carrying out three major research tasks: 1) develop a novel analysis-design-assessment framework for performance based seismic design, 2) implement the framework by incorporating nonlinear analysis tools with a conventional analysis-design tool, and 3) develop a document with verification and validation examples for the adopted nonlinear numerical models. The research project will significantly impact the industry partner, the structural engineering industry, and Canada. The research development which will be implemented in the industry partner's main product will allow the company to lead the market in the next five years. For Canada, there will be economic benefits by improving the competitiveness of the industry partner and by training HQPs. In addition, building structures designed using the framework will be safe and economical which will minimize the societal loss in the event of major earthquakes.