The Study On Mechanical Properties Of Oblique-reinforced Continuously Concrete Pavement

Oblique-reinforced concrete pavement is a new structure style with steel bars installed in the concrete slab in different directions, it can resist the transverse contraction of the fracture, improve the deformation capacity, improve the durability of concrete pavement and increase the whole stiffness of the pavement. This new structure has better bearing capacity, durability, economical features, which become a new development of pavement structure in future.According to the road structure and the mechanical characteristics of concrete slab, with fully considering of crack of the pavement and interactions between structure layers in practical engineering, a finite element model is created in this paper. This model can effectively simulate stress status of the pavement structure under both traffic loads and environmental factors (temperature, humidity).Aiming at the effect of the traffic load, a numerical calculation is carried out in this paper, which simulates the principle of the pavement and analyses the impact of the thickness of the concrete slab, concrete strength, elastic modulus, traffic load, bar diameter, load action positions, crack width and crack spacing to the mechanical properties. With calculated data, the corresponding load - stress curve is drawn accordingly.Aiming at the effect of temperature load, an numerical calculation is carried out in this paper, which simulates the principle of the pavement and analyses the impact of the temperature grade, the thickness of concrete slab, concrete strength, crack width, crack spacing, the thermal expansion coefficient, the bar diameter, bar spacing and reforcement forms to the mechanical properties. With calculated data, the corresponding load - stress curve is drawn accordingly.In the light of the elastic layered software, the interfacial stress between layers is calculated, it has also analyzed and discussed the impact of the temperature, the thickness of the concrete slab and traffic load to maximum shear stress and maximum compressive stress. Based on the analysis and regression of the data, an interface stress bearing capacity formula is created in the paper.