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Impact of a Large San Andreas Fault Earthquake on Tall Buildings in Southern California

Krishnan, Swaminathan and Ji, Chen and Komatitsch, Dimitri and Tromp, Jeroen (2006) Impact of a Large San Andreas Fault Earthquake on Tall Buildings in Southern California. California Institute of Technology , Pasadena, CA. (Submitted)

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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.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription's website
Krishnan, Swaminathan0000-0002-2594-1523
Ji, Chen0000-0002-0350-5704
Tromp, Jeroen0000-0002-2742-8299
Record Number:CaltechAUTHORS:20130305-144306529
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37320
Deposited By: Tony Diaz
Deposited On:19 Jul 2013 21:59
Last Modified:09 Mar 2020 13:19

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