Distress Analysis of Asphalt Pavements on a Steel Deck
With the increasing use of steel deck on major bridges, pavement engineers are faced with difficulties in the selection of suitable asphalt mix on top of the steel deck. Traditional flexible pavement analysis models, typically developed based on multi-layer elastic theory, are judged not applicable to the analysis of pavements sitting on the steel deck of bridges. In this paper, a finite element analysis model was developed for the analysis of pavement responses on a steel deck. In order to investigate the possible causes of pavement distress on a steel deck, critical stresses/strains in the pavement under truck traffic loads were determined and categorized into various types in terms of fatigue cracking and permanent deformation of asphalt mixes, respectively. Analytical results showed that fatigue cracking of asphalt mix on steel bridge deck appears in 4 possible locations, which exhibit maximum tensile strain in the asphalt material. Permanent deformation of the pavement tends to accumulate at the layer that is directly in contact with tire loading, rather than the supporting layer underneath. Based on the distress analysis results obtained from the model, S combinations of surface/base asphalt mixes, namely, dense-graded asphalt concrete/Guss asphalt mix, modified asphalt concrete/Guss asphalt mix, Porous asphalt concrete/Guss asphalt mix, Stone mastic asphalt concrete/Guss asphalt mix and Guss asphalt mix/Guss asphalt mix, were evaluated for their suitability as pavement materials on a steel deck. Results of a comparison on maximum stresses/strains in the pavement surface/base indicate that the use of full-depth Guss asphalt mix is expected to produce the best performance on a steel deck.
Steel deck pavement distress Guss asphalt mix
Yi-Wei Weng Jyh-Dong Lin Wei-Hsing Huang Ming-Chin Yeh
Dept. of Civil Engineering, National Central University
国际会议
2010 International Conference on Construction and Project Management(2010年IEEE建设与项目管理国际会议 2010ICCPM)
成都
英文
370-377
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）