Collision test between steel bars with shock absorbing rubber for bridge restrainer system using fricitonless impact testing apparatus

Takeshi Kitahara, Yukihide Kajita, Yasushi Nishimoto, Satoshi Katsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In the Japanese Specifications for Highway Bridges, shock absorbing rubbers should be required to reduce the impact load with the collision between a superstructure and a device which prevents a superstructure from falling off, or between two superstructures. However, the specification has no detail prescript regarding the thickness of shock absorbing rubbers. Therefore, it is very important to investigate the effect of the thickness of shock absorbing rubbers on the reduction of impact load. In this study, the collision test between two steel solid bars using a new experimental apparatus is carried out in order to assess the above effect. This new apparatus can levitate a steel bar by using compressed air so that there is little friction between a steel bar and a guide rail against the horizontal movement. We name this apparatus as “frictionless impact testing apparatus”. The steel bar has 1000mm long, 200mm wide, 200mm high and about 3.0kN weight and the thickness of shock absorbing rubbers ranges from 2mm to 40mm and the collision velocity ranges from 0.2m/sec to 1.0m/sec on 7 stages. From the test results, it is confirmed that the sliding friction force is very small. In addition, the qualitative influence of the rubber thickness and collision velocity on the reduction of the maximum impact load is clarified in collision between two steel bars with shock absorbing rubber for bridge restrainer system.

Original languageEnglish
Title of host publicationAESE 2005 - Proceedings of the 1st International Conference on Advances in Experimental Stuctural Engineering
PublisherEUCENTRE
Pages901-907
Number of pages7
ISBN (Electronic)4901887181, 9784901887182
Publication statusPublished - Jan 1 2005
Externally publishedYes
Event1st International Conference on Advances in Experimental Stuctural Engineering, AESE 2005 - Nagoya, Japan
Duration: Jul 19 2005Jul 21 2005

Publication series

NameInternational Conference on Advances in Experimental Structural Engineering
Volume2005-July
ISSN (Electronic)2522-2503

Conference

Conference1st International Conference on Advances in Experimental Stuctural Engineering, AESE 2005
CountryJapan
CityNagoya
Period7/19/057/21/05

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Kitahara, T., Kajita, Y., Nishimoto, Y., & Katsuki, S. (2005). Collision test between steel bars with shock absorbing rubber for bridge restrainer system using fricitonless impact testing apparatus. In AESE 2005 - Proceedings of the 1st International Conference on Advances in Experimental Stuctural Engineering (pp. 901-907). (International Conference on Advances in Experimental Structural Engineering; Vol. 2005-July). EUCENTRE.