隧道水泥混凝土路面抗滑构造设计与应用研究

隧道水泥混凝土路面抗滑性能是影响行车安全的重要因素。为了改善隧道水泥混凝土路面抗滑摩擦力,在参考国内外刻槽技术成果的基础上,基于依托工程的使用环境与线形特征,分别从槽形、刻槽方向、槽宽、槽间距、槽深等参数开展设计。根据室内试验开展不同刻槽参数的抗滑性能研究,分析路面构造深度与摩擦系数的主要影响因素。路面抗滑摩擦力主要由路表宏观构造与微观纹理共同提供,拉毛可以有效改善路面抗滑构造的微观纹理,刻槽可以塑造路面宏观构造,二者的结合能够最大限度发挥路面的抗滑性能。混凝土施工过程中,应从拉毛与刻槽两阶段分别开展混凝土路面构造施工质量控制。

Research on Design and Application of Skid Resistance Texture of Tunnel Cement Concrete Pavement

The skid resistance of tunnel cement concrete pavement is an important factor affecting traffic safety. In order to improve the skid resistance friction of tunnel cement concrete pavement, the pavement texture is designed based on the domestic and foreign achievements of grooving technology. According to the project environment and alignment characteristics, the design is carried out from the parameters of groove shape, groove direction, groove width, groove spacing and groove depth. The skid resistance performance of different groove parameters was studied by the laboratory test, and the main factors influencing pavement texture depth and friction coefficient were analyzed. The skid resistance performance of pavement is mainly provided by the macro and micro texture of pavement. The reasonable roughening can effectively improve the micro-texture and the groove can shape the macro-texture of the pavement. The combination of roughening and groove can maximize the anti-sliding performance of the road. In the process of concrete construction, the quality control of concrete pavement construction should be carried out in roughening and grooving stage.