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水泥混凝土道面接缝是刚性道面结构中最容易产生应力集中从而引起病害的部位,接缝处的传荷能力对减小道面板边缘应力集中,确保道面结构使用性能和延长道面寿命具有重要作用。结合大量资料分析,总结刚性道面接缝构造、传荷机理以及表征接缝传荷能力指标的研究现状,讨论接缝传荷刚度和挠度传荷系数关系的研究模型存在的问题,指出板底脱空对接缝传荷能力的影响以及后续改进的方法。
Cement concrete pavement joints are the parts of rigid pavement structure that are most likely to cause stress concentration and thus cause disease. The load carrying capacity of seams reduces the stress concentration on the edge of pavement slabs, ensures the pavement structure serviceability and prolongs the pavement life Has an important role. Combining with a large amount of data analysis, this paper summarizes the research status of rigid pavement joint structure, transmission mechanism, and characterization of joint load transmission capacity. The problems existing in the research model of joint load transmission stiffness and deflection load coefficient are discussed. The influence of void on the joint load transfer capacity and the subsequent improvement methods.