RBSN Analysis Model of Asphalt Pavement Retrofitted with Civil Fiber

토목섬유로 보강된 아스팔트 포장의 RBSN 해석 모델

  • Han, Sang-Hoon (Department of Civil Engineering, Chungbuk National University) ;
  • Kwak, So-Shin (Department of Civil Engineering, Chungbuk National University) ;
  • Kwon, Yong-Kil (Korea Institute of Water and Environment) ;
  • Hong, Ki-Nam (Department of Civil Engineering, Chungbuk National University)
  • Received : 2010.02.10
  • Accepted : 2010.04.07
  • Published : 2010.04.30

Abstract

This paper presents a simple and efficient two-dimensional rigid-body-spring network model able to accurately estimate the fractural behavior of civil fiber reinforced pavements. The proposed rigid-body-spring network model, denoted as RBSN model, considers civil fiber reinforcing materials using the beam elements and link spring elements. The RBSN method is able to model collapse due to asphalt crushing and civil fiber slip. The RBSN model is used to predict the applied load-midspan deflection response of civil fiber retrofitted asphalt specimen subjected to the three-point bending. Numerical simulations and experimental measurements are compared to based on tests available in the literature. The numerically simulated responses agree significantly with the corresponding experimental results until the maximum load. However, It should be mentioned that, in order to more accurately predict the postpeak flexural behavior of the civil fiber retrofitted asphalt pavement, development of the advanced model to simulate the slip relationship between civil fiber and asphalt is required.

Acknowledgement

Supported by : 충북대학교

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