Temperature Warping Stress Study on Continuously Reinforced Concrete Pavement

Abstract:

Temperature warping stress of plain concrete plate calculated by Westergaard formula and finite element method (FEM) was comparatively analyzed.It demonstrates the applicability of plain concrete plate model,and an important conclusion is drawn that body weight produces no effect on warping stress.Based on threedirection spring simulating the bondslip relation between steel and concrete,warping stress alteration of feature points before and after reinforcement was calculated.Influence of the following parameters on the change of warping stress before and after reinforcement could be neglected,such as reinforced layer location,bondslip stiffness coefficient,temperature gradient,plate length,plate thickness and reinforcement ratio.The results show that temperature warping stress calculation method of separate plate of continuously reinforce concrete parement (CRCP) under Winkler foundation is the same as its size of ordinary Portland cement concrete slab.