水泥混凝土路面接缝传荷能力的研究现状和发展趋势

Current Status and Development Trend for Study on Load Transfer Efficiency at Joints for Cement Concrete Pavement

接缝是水泥混凝土路面结构最薄弱的部位,其传荷能力直接影响路面结构设计和使用性能。通过广泛的资料调研和分析,在回顾有关水泥混凝土路面结构力学响应研究的基础上,对接缝传荷作用的模拟、接缝剪切刚度的确定和接缝传荷能力的评价等内容的研究现状进行了系统总结。最后指出有关接缝传荷能力研究中存在的问题和发展趋势,提出应重点考虑接缝传荷与板底脱空的耦合作用和分离方法。

Joints are the weakest part of rigid pavement system,and the load transfer efficiency at joints is primary concern in rigid pavement design and performance.By means of detail investigation and analysis,the study on structural response of cement concrete pavement is reviewed,and a systematic summarization on the model for joint load transfer,the determination of joint stiffness and the evaluation of load transfer efficiency are made.Furthermore,the existing problems and development trend for the study on load transfer efficiency are presented,and the coupling effect and separation method of joint load transfer and local void beneath slabs are suggested to be further studied.