期刊论文

Structure optimization and performance evaluation of continuously reinforced concrete pavement

中文

土木工程学报

1000-131X

2017

50

7

122-128

10.15951/j.tmgcxb.2017.07.013

51678078:国家自然科学基金 kfj150102:长沙理工大学公路养护技术国家工程实验室开放基金

本校为第一机构

针对目前连续配筋混凝土路面(CRCP)的结构特征和缺陷,对CRCP结构进行了研发及优化设计,垫层用碎石,基层采用碾压混凝土,面层分上下两层,上面层采用橡胶水泥混凝土,基层和面层之间设沥青混凝土抗冲刷层;行车道及硬路肩1/2宽度范围内的面层设纵横向连续钢筋以及可滑移支座,硬路肩另外1/2宽度范围的部分为素混凝土,在硬路肩1/2宽度处设纵向接缝,在面层设横向诱导切缝;钢筋采用环氧树脂净浆涂层处理,横向钢筋和纵向钢筋呈30°~60°角;运用断裂力学、损伤力学理论和数值仿真法,对CRCP加铺改造后沥青层的损伤开裂进行了研究,结果表明:新的CRCP结构沥青加铺层的疲劳损伤寿命大幅提高,裂缝扩展强度大大减...

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 th...