Behavior of Continuously Reinforced Concrete Pavement under Moving Vehicle Loads and Effecct of Steel Ratio

이동차량하중에 대한 연속철근콘크리트포장의 거동 및 철근비의 영향

  • 김성민 (경희대학교 토목건축대학) ;
  • 조병휘 (경희대학교 토목공학과) ;
  • 권순민 (한국도로공사 도로교통기술원)
  • Published : 2006.03.01

Abstract

The behavior of continuously reinforced concrete pavement (CRCP) and the effect of the steel ratio on the behavior under moving wheel loads were investigated in this study. The CRCP sections having different steel ratios of 0.6, 0.7, and 0.8% were considered to evaluate the load transfer efficiency (LTE) at transverse cracks and to investigate the strains in CRCP when the system is subjected to moving vehicle loads. The LTEs were obtained by conducting the falling weight deflectometer (FWD) tests and the tests were performed at three different times of a day to find the curling effect due to the daily temperature changes in CRCP. The strains in the concrete slab and the bond braker layer of the CRCP system under moving vehicle loads were obtained using the embedded strain gages. The results of this study show that the LTEs at transverse cracks are very high and not affected by the time of testing and the steel ratio. The strains in CRCP under vehicle loads become smaller as the vehicle speed increases or as the wandering distance increases; however, the strains are not clearly affected by the steel ratio.