Design Indexes For Continuously Reinforced Concrete Pavements Using Glass Fiber Reinforced Polymer Rebars

Continuously reinforced concrete pavement with no seams, steel corrosioncracking is the most important factor in the pavement. GFRP bars continuouslyreinforced concrete pavement instead of ordinary means of continuously reinforcedconcrete pavement reinforced with GFRP bars. Due to poor corrosion resistance ofordinary steel,and GFRP bars with good corrosion resistance,the use of GFRP barsinstead of ordinary steel has good practical value. Although the road has been used, butstill in the experimental phase of the road, but the choice of the design specificationsare directly used ordinary continuously reinforced concrete pavement designspecifications for the study of the design of the road is still in the blank stage.This thesis experimentally derived bond strength of GFRP bars and concrete aswell as ultimate tensile strength and elastic modulus, obtained GFRP bars is a lowmodulus, high-strength materials, is a more than ordinary steel suitable for continuousmaterial reinforced concrete pavement. Then through research at home and abroad inthe form of the destruction of continuously reinforced concrete pavement found thatthe main thrust of the failure modes are continuously reinforced concrete pavement,and thrust the average crack spacing and has no direct relationship with the majority ofthrust cracks occur in dense;mechanism thrust generated by the analysis and controlmethods of the study pointed out the direction of design specifications.By loweringthe temperature and shrinkage stress analysis, the continuously reinforced concretepavement with GFRP bars and stress common variation of continuously reinforcedconcrete pavement is similar, but the former concrete stress and stress better than theGFRP bars the latter is much smaller;then studied the crack spacing, affect GFRP barsdiameter, GFRP reinforcement spacing and the thickness of the concrete and otherfactors such as stress. Allows for load stress and the role of the number of loads wereanalyzed, compared and analyzed with a load of GFRP bars continuously reinforcedconcrete pavement and continuously reinforced concrete pavement ordinary actionpermitted number, found the number of times the role of the former than the latterallowing the load to be bigger, but the advantage is not obvious, selected through acomparative study of GFRP bars fit with continuously reinforced concrete pavementdesign specifications. Finally, at home and abroad mainly introduced continuouslyreinforced concrete pavement design methods,as well as a numerical example toverify the reasonableness of the design specifications of this article.Through comparative analysis, proposed for continuously reinforced concretepavement with GFRP bars in the design specifications of continuously reinforcedconcrete pavement with GFRP bars in the design and construction of important guidingsignificance.