Continuously Reinforced Concrete Base Structure Design Method

Recently ,because of surcharge load and heavy load the service performance of the pavement attenuated very fast, life also shrinked heavierly.Continuously reinforced concreate base asphalt pavement not only has better comfortable riding but also lower maintain cost during its life-cycles. The steel in sub base concreate reinforce the durability of the structure significantly, and has a applied foreground in high grade highway of heavy transportation.According to the establishment of reinforced-concrete desrete models through the finite element method for continuously reinforced concreate base this paper stated that with the different distance between crackings the two critical load position was found, and the stress variety law of the slab bottom effected by these parameters, such as modules, thickness of the subase.By the analysis method, it was deduced that the structural stress formula of continuously reinforced concreate panel under the temperrature and desiccation shrinkage etc. and its displacement formula effected by the parameters of the temperature, the steel rate etc.Combining the theoretical analysis and the experiences of domestic and international, this paper put forwards the structural design method of continuously reinforced concrete base, presents the recommended design standard such as longitudinal steel rate of 0. 3%~0.6%, max crack width of 1. 5mm and so on. At last, the trial segment of continuously reinforced concrete base was built for its construction technology.