A Study on Permit Vehicle Weight for Highway Bridges

도로교의 중차량 통과허용하중 설정에 관한 연구

  • 김상효 (연세대학교 사회환경건축공학부) ;
  • 양남석 (㈜다산컨설턴트 구조부) ;
  • 김종학 (연세대학교 토목공학과) ;
  • 전귀현 (시설안전기술공단)
  • Published : 2000.04.01

Abstract

Malty bridges are severely damaged by the overloaded heavy vehicle and tile trend will become more serious because the traffic volume is continuously increasing. Currently, the vehicles with gross weights over 40 tons or axle weight over 10 tons are not allowed on the public road. However, this regulation is not based on a systemetic study on the bridge capacityand assumed to be much too conservative depending on the vehicle types ans bridge types. In this study, the permit weights of heavy vehicles of diverse axle spacings and axle load distribution are calculated considering the structural characteristics of bridge superstructures. In order to consider the various load effects of heavy weight vehicle crossings, three conditions are considered in the calculation of permit vehicle load. From the results, the permit vehicle weights of bridges are calculated and simplified formulas which can be used in the case when only the vehicle dimension are known are presented.

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