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Title: Experimental Evaluation of Seismic Residual Performance for Deteriorated Rubber Bearings in Highway Bridges
Authors: Hayashi, Kunihiro
Adachi, Yukio
Sakamoto, Naota
Igarashi, Akira  kyouindb  KAKEN_id  orcid (unconfirmed)
Dang, Ji
Author's alias: 五十嵐, 晃
Keywords: Rubber bearing
Aging deterioration
Seismic residual performance
Issue Date: 2015
Journal title: Proceedings of Joint 6th International Conference on Advances in Experimental Structural Engineering (6AESE) and 11th International Workshop on Advanced Smart Materials and Smart Structures Technology (11ANCRiSST)
Thesis number: 220
Abstract: Aging deterioration of rubber bearings (elastomeric bearings) in highway bridges is an issue of great significance for bridge management, in view of the influence to the seismic performance and functionality during regular condition of the bridges. In Japan, the use of rubber bearings in the construction of bridges started in early 1980’s, and also an extensive number of conventional bearings of existing bridges have been extensively replaced with rubber bearings since 1995. As a consequence of the duration of service exceeding 20 years, a considerable number of surface rubber cracks of rubber bearings due to aging deterioration have been found by inspection of highway bridges. In this study, seismic residual performance of rubber bearing samples with aging deterioration taken from a highway bridge site was evaluated by shear loading tests and the material tests. The reduction of the load bearing capacity and that of the stiffness obtained by the test are indicative measures of the aging deterioration effect on the rubber bearings. A particular feature of debonding between rubber and steel layers are found in the deteriorated bearings.
Description: [6th International Conference on Advances in Experimental Structural Engineering/11th International Workshop on Advanced Smart Materials and Smart Structures Technology (2015 Joit Coference AESE/ANCRiSST)] August 1-2, 2015; University of Illinois, Urbana-Champaign, United States
Rights: The organizer of '6AESE/11ANCRiSST' approved uploadong the file into this repository.
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