Journal of Structural and Construction Engineering (Transactions of AIJ)
Online ISSN : 1881-8153
Print ISSN : 1340-4202
ISSN-L : 1340-4202
A THREE-DIMENSIONAL MULTI-SPRING MODEL FOR SQUARE LEAD-RUBBER BEARINGS UNDER LARGE SHEAR DEFORMATIONS
Masaru KIKUCHISachie YAMAMOTOTakahito NAKAMURATakuya NISHIMURAKazuo TAMURA
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2009 Volume 74 Issue 638 Pages 647-655

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Abstract

The paper describes a new analytical model for predicting the large displacement behavior of square lead-rubber isolation bearings. The present model is developed by extending to three dimensions an existing model for elastomeric isolation bearings under severe axial loads and shear deformations. Static loading tests of square lead-rubber bearings are performed to investigate the effect of loading direction on bearing behavior. The test results showed that the ultimate behavior is strongly influenced by loading direction, especially for large shear deformation and high axial load. The results of analyses using the new model show very good agreement with the experimental results.

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© 2009 Architectural Institute of Japan
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