Modifications to risk-targeted seismic design maps for subduction and near-fault hazards

By: , and 
Edited by: Terje Haukaas

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Abstract

ASCE 7-10 introduced new seismic design maps that define risk-targeted ground motions such that buildings designed according to these maps will have 1% chance of collapse in 50 years. These maps were developed by iterative risk calculation, wherein a generic building collapse fragility curve is convolved with the U.S. Geological Survey hazard curve until target risk criteria are met. Recent research shows that this current approach may be unconservative at locations where the tectonic environment is much different than that used to develop the generic fragility curve. This study illustrates how risk-targeted ground motions at selected sites would change if generic building fragility curve and hazard assessment were modified to account for seismic risk from subduction earthquakes and near-fault pulses. The paper also explores the difficulties in implementing these changes.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Modifications to risk-targeted seismic design maps for subduction and near-fault hazards
DOI 10.14288/1.0076228
Year Published 2015
Language English
Publisher Civil Engineering Risk and Reliability Association
Contributing office(s) Geologic Hazards Science Center
Description 8 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Proceedings of the 12th international conference on applications of statistics and probability in civil engineering (ICASP12)
Conference Title ICASP12: 12th International Conference on Applications of Statistics and Probability in Civil Engineering
Conference Location Vancouver, Canada
Conference Date July 12-15, 2015