ABSTRACT

Currently, punchout distress in continuously reinforced concrete pavement (CRCP) frequently occurs even if the reinforcement design strictly adheres to specifications. In this study, a new concept called reinforced concrete pavement with large spacing joints (RCPS) is proposed, and a new isolation layer is applied to the RCPS on the basis of laboratory results. Finally, a test road is constructed to verify the rationality of the structure of RCPS. The results show that reducing the friction and bonding strength between the isolation layer and pavement is the key to implement RCPS. The design method of RCPS not only retains the good bearing capacity of CRCP but also overcomes the problem in which the dry shrinkage and temperature stresses of CRCP cannot be released, which leads to punchouts.

摘要

当前，即使钢筋设计严格遵守规范，连续钢筋混凝土路面（CRCP）上的打孔也会频繁发生。在这项研究中，提出了一种新的概念，即带有大间距缝的钢筋混凝土路面（RCPS），并根据实验室结果将新的隔离层应用于RCPS。最后，构建了一条测试路以验证RCPS结构的合理性。结果表明，降低隔离层与人行道之间的摩擦和粘结强度是实施RCPS的关键。RCPS的设计方法不仅保持了CRCP的良好承载能力，而且克服了CRCP的干缩和温度应力无法释放而导致打孔的问题。