Abstract：Aiming at the structure characteristics and the flaws of the existing continuously reinforced concrete pavement (CRCP), a new CRCP structure is developed and optimized. Gravel is used for the bedding course, and rolled compacted concrete for the base course. The wearing course includes two layers, with the surface layer adopting rubber cement concrete. Asphalt concrete anti-erosion layer is set between the wearing course and the base course. Continuously reinforcing steel bars are set on movable bearing in both longitudinal and transverse directions within the traffic lane and inner half of the hard shoulder. The outer half of the hard shoulder is lean cement concrete. A longitudinal joint is set between the inner and outer half of the hard shoulder. Transverse inducing slots are cut at the surface. Steel bars are coated with epoxy grout, and the angles between the longitudinal and transverse direction are about 30°~60°. Fracture mechanics, damage mechanics, and numerical simulation are used to analyze the fatigue damage and cracking characteristics of asphalt overlay on CRCP. Results show that the fatigue life of the asphalt layer is greatly improved, and the crack propagation is greatly reduced. Pavement performance is effectively enhanced, and economic benefits are significant. Applied in real construction, the design theory and method can not only provide a theoretical basis and reference for the design of CRCP, but also provide a useful reference for the development of road design theory.
李盛 杨帆 曹前 刘朝晖. 连续配筋混凝土路面结构优化及性能评价[J]. 土木工程学报, 2017, 50(7): 122-128.
Li Sheng Yang Fan Cao Qian Liu Zhaohui. Structure optimization and performance evaluation of continuously reinforced concrete pavement. 土木工程学报, 2017, 50(7): 122-128.
