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    Seismic performance of Alaskan structures

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    Cherlopalle_V_2004.pdf
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    Author
    Cherlopalle, Dileep
    Chair
    Hulsey, J. Leroy
    Committee
    Carlson, Robert
    Shur, Yuri
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/5908
    Abstract
    Alaska is the most earthquake prone area in the United States. On October 23, 2002 a 6.7 magnitude earthquake occurred in interior Alaska. This was followed by a magnitude 7.9 earthquake that occurred near Denali on November 3, 2002. The Denali earthquake was the largest inland earthquake in North America in almost 150 years. Only minimal structural damage was reported. Subsequently, structural engineers should question why minimal damage. As a part of an investigation to evaluate this unusual phenomenon, two structures were selected for seismic analysis, a building and a bridge. The building is at Alyeska Pump Station # 10 (3 miles from the epicenter) and only non-structural damage occurred. A 3 span truss bridge near Tok, Alaska was selected as the second. This structure experienced only minimal damage. Seismic analysis was performed on these two structures for horizontal excitations. A corrected seismic data from Pump Station # 10 was used as the earthquake excitation record. The maximums for displacements, member forces and member stresses were studied. The results show that no structural damage should have occurred for the building and minimal damage for the bridge. These findings compare favorably with field inspection results reported by others.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2004
    Table of Contents
    Alaska earthquake history -- Seismic zones of the United States -- Alaska earthquake history -- Denali earthquake -- Literature survey and data collection -- Seismic analysis -- Tanana bridge -- Structural steel building -- Results and conclusions -- Tanana river bridge at Tok, Alaska -- References.
    Date
    2004-08
    Type
    Thesis
    Collections
    Engineering

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