美國耐震性能導向設計之發展
Development of Performance-Based Seismic Design Guidelines
in the United States
Speaker:
Chia-Ming Uang
Professor, Department of Structural Engineering,
University of California, San Diego,
La Jolla, CA 92093-0085, USA
ASBTRACT
Model building codes are written to cover a wide range of building types.
These codes usually intend to achieve the Basic Safety objective for new
construction through a thoughtful balance of strength and ductility defined
as prescriptive requirements. Since a direct application of these codes to
existing buildings quite often will result in costly strengthening,
performance-based design procedures which rely on advanced evaluation
techniques have been developed in the 1990s in response to the need for
seismic rehabilitation. This alternative approach also finds its application
to seismic design of tall building, which according to building codes might
have been prohibited due to height and other limitations. These
first-generation procedures use discrete performance levels, and the seismic
risks are still evaluated in an implicit manner. The next-generation
performance-based design procedures are been developed such that the outcome
can be better related to the decision-making needs of stakeholders.
Host : Prof. 周中哲
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