Upgrade Decision-Making for Earthquake-Vulnerable Wooden Houses Using Probabilistic Damage Index Functions
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 4, Issue 1
Abstract
There is widespread awareness in seismic-prone countries of the necessity to improve the seismic performance of old buildings and houses for disaster mitigation. To support the decision making of house owners regarding upgrades, appropriate seismic risk information should be conveyed to them; such information would allow them to compare the effects of seismic upgrade strategies on risk reduction. This study develops probabilistic damage index functions for wooden houses in Japan, taking site conditions into account. Three existing 2-story wooden houses with traditional seismic resistance elements typical of 1960s and 1970s construction are virtually upgraded or downgraded by adding or removing walls and/or braces to model houses with a range of load-carrying capacities. Then time history analyses are conducted by using simulated ground motions and the maximum interstory drift ratio to develop the damage index functions. Finally, the validity of the proposed functions is demonstrated by using field survey results.
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Acknowledgments
The first author is grateful for the financial support provided by the Japanese Ministry of Education, Science, Sports, and Culture (MEXT) through a Grant-in-Aid for Scientific Research (B) (No. 25282100) and by the Japan Society for the Promotion of Science (JSPS). The authors also thank Mokutaikyo for providing the results of the seismic diagnosis of old houses.
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Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 4 • Issue 1 • March 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Oct 24, 2015
Accepted: Jul 31, 2017
Published online: Nov 29, 2017
Published in print: Mar 1, 2018
Discussion open until: Apr 29, 2018
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