Study on Performance Objective for Performance Based Seismic Design
Date Issued
2005
Date
2005
Author(s)
Wen, Tai-Hsin
DOI
zh-TW
Abstract
Through the concept of seismic hazard assessment and the damage index criteria, a new approach to assess the performance of the structure with respect to the level of earthquake excitation is developed in this research. Through Fajfar’s hysteretic energy model and Park and Ang damage index, the damage-related hazard curves are generated. The parameters to be considered in these hazard curves include capacity and demand of system ductility, hysteretic dissipation energy capacity of the structural system, and structural period. Similarly, through the concept of dissipated energy during a sequence of earthquakes and the proposed damage consistent hazard curves, the residual energy capacity of a “pre-damaged” structure can be estimated, too. Re-estimation on the performance objective after a series of earthquake excitation can be conducted. Seismic ground motion data collected from Taiwan were used to generate the regression model in this study. In addition, the benefit of a structure during its life cycle can be estimated with the concept of performance objective. Through the economy parameter (B/C ratio), life cycle and expected damage level during its life cycle, the platform is established for client and designer to discuss what performance the structure should reach. It’s the major mechanism in performance based design.
Subjects
生命週期
損害度
性能設計
damage index
life cycle
performance based design
Type
thesis
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