American Society of Civil Engineers

User Losses in Earthquake-Damaged Roadway Networks

by Chris Hendrickson, A.M.ASCE, (Asst. Prof. of Civ. Engrg., Carnegie-Mellon Univ., Pittsburgh, Pa.), Krishnaswami Siddharthan, (Graduate Student, School of Urban and Public Affairs, Carnegie-Mellon Univ., Pittsburgh, Pa.), and Irving J. Oppenheim, A.M.ASCE, (Assoc. Prof. of Architecture & Civ. Engrg., Carnegie-Mellon Univ., Pittsburgh, Pa.)

Journal of the Technical Councils of ASCE
, Vol. 106, No. 1, August 1980, pp. 117-127

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Document type: Journal Paper
Abstract: Network analysis of an earthquake-damaged arterial system is performed using a highly efficient traffic assignment algorithm. The reduced trip volume and increased average trip time can be obtained for any simulated earthquake; the (hourly) loss in total net user benefit is obtained, and is labelled the user loss. The analysis is repeated for a set of discrete earthquakes which model the seismic hazard. The end result is the annual expected user loss; this is a direct measure of “seismic risk.” In one example the user loss increases more rapidly with intensity than does the repair-replacement costs.

ASCE Subject Headings:
Earthquake resistant structures
Economic factors
Highway and road conditions