Inelastic Earthquake-Resistant Design of Bridges—Application to Concrete Cable-Stayed Bridges

by Hirokazu Iemura, Kyoto Univ, Japan,
Yoshikazu Yamada, Kyoto Univ, Japan,

Document Type: Proceeding Paper

Part of: Structural Design, Analysis and Testing


Various methods of earthquake-resistant design of bridges use in both the U.S. and Japan are summarized and reviewed. Among them, principles of approximate and rigorous inelastic earthquake design methods are compared. Problems arising from the use of approximate methods are pointed out and rigorous inelastic response analysis is recommended. Using inelastic response analysis of concrete towers of cable-stayed bridges as examples, a stress-strain based method is proposed, which can take into account of effects of variation of axial force to inelastic flexure response.

Subject Headings: Concrete bridges | Cable stayed bridges | Bridge design | Cables | Elasticity and Inelasticity | Seismic design | Earthquake resistant structures | Bridge towers | Japan | Asia

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