Seismic Ground-Motion Design Criteria for Highway Bridges from the Perspective of Design Engineers

Author:

(Po) Lam Ignatius1,Law Hubert1,Maroney Brian2

Affiliation:

1. Earth Mechanics, Inc., Fountain Valley, CA

2. Retired, Caltrans, Davis, CA

Abstract

This paper presents the history and development of criteria for both the design response-spectrum method for ordinary, common bridges analyzed by the modal-superposition method, and the ground-motion time-history analysis method and inputs for designing major, important long-span bridges. This paper addresses various challenges encountered by the designers related to implementation of ground-motion design criteria.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Civil and Structural Engineering

Reference18 articles.

1. The Continuing Challenge: Report on the Performance of State Bridges in the Northridge Earthquake

2. Geomatrix. Adjustments to Rock Response Spectra for Caltrans Toll Bridges in Northern California. Project Report. Report prepared for California Department of Transportation, Division of Structures, 1995.

3. Modification of Empirical Strong Ground Motion Attenuation Relations to Include the Amplitude and Duration Effects of Rupture Directivity

4. Caltrans Seismic Advisory Board. The Race to Seismic Safety: Protecting California’s Transportation System. Submitted to Director California Department of Transportation, California Department of Transportation, December 2003.

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