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Investigation for crack on base-isolated rubber bearing subjected to environmental degradation factors and external loads

 Investigation for crack on base-isolated rubber bearing subjected to environmental degradation factors and external loads
Author(s): , ,
Presented at IABSE Conference: Elegance in structures, Nara, Japan, 13-15 May 2015, published in , pp. 410-411
DOI: 10.2749/222137815815775655
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For investigating the effect of environmental degradation factors and external loads on the crack occurrence on the surface of rubber bearing and to develop a countermeasure, a series of accelerate...
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Bibliographic Details

Author(s):


Medium: conference paper
Language(s): English
Conference: IABSE Conference: Elegance in structures, Nara, Japan, 13-15 May 2015
Published in:
Page(s): 410-411 Total no. of pages: 8
Page(s): 410-411
Total no. of pages: 8
Year: 2015
DOI: 10.2749/222137815815775655
Abstract:

For investigating the effect of environmental degradation factors and external loads on the crack occurrence on the surface of rubber bearing and to develop a countermeasure, a series of accelerated exposure experiments was carried out. The accelerated exposure experiment was performed on large size rubber bearing specimens under the condition that the temperature was 40 degrees Celsius and the ozone density was 100 pphm. The crack was observed on the surface of rubber bearing by 384 hours, especially in the large tensile strain region. The crack simulated the actual one observed in the real base-isolated rubber bearing. After the experiments, the load carrying capacity and the stiffness of damaged rubber bearing were examined. However, the performance of damaged rubber bearing was not deteriorated compared with those of virgin state.

Keywords:
crack temperature strain base-isolated natural rubber bearing ozone