Impact of a large San Andreas fault earthquake on tall buildings in southern California

Swaminathan Krishnan, Chen Ji, Dimitri Komatitsch, Jeroen Tromp

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In 1857 a large earthquake of magnitude 7.9 (Sieh 1978b) occurred on the San Andreas fault with rupture initiating at Parkfield in Central California and propagating in a southeasterly direction over a distance of more than 360 km. Such a unilateral rupture produces significant directivity toward the San Fernando and Los Angeles basins. Indeed, newspaper reports (Agnew and Sieh 1978; Meltzner and Wald 1998) of sloshing observed in the Los Angeles river point to long-duration (1.2 min) and long-period (2.8 s) shaking, which could have a severe impact on present-day tall buildings, especially in the mid-height range. Using state-of-the-art computational tools in seismology and structural engineering, validated using data from the Northridge earthquake, we determine the damage in 18-story steel moment-frame buildings in southern California due to ground motion from a hypothetical magnitude 7.9 earthquake on the San Andreas fault. Our study indicates that serious damage occurs in these buildings at many locations in the region, leading to wide-spread building closures and seriously affecting the regional economy.

Original languageEnglish (US)
Title of host publication8th US National Conference on Earthquake Engineering 2006
Pages8966-8977
Number of pages12
StatePublished - 2006
Externally publishedYes
Event8th US National Conference on Earthquake Engineering 2006 - San Francisco, CA, United States
Duration: Apr 18 2006Apr 22 2006

Publication series

Name8th US National Conference on Earthquake Engineering 2006
Volume15

Other

Other8th US National Conference on Earthquake Engineering 2006
Country/TerritoryUnited States
CitySan Francisco, CA
Period4/18/064/22/06

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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