水泥混凝土道面传力杆接缝传荷能力影响因素分析  

Analysis of Influencing Factors on Load Transfer Capacity of Doweled Joint in Cement Concrete Pavement

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作  者:王宇翔 WANG Yuxiang(Shanghai New Era Airport Design&Research Institute Co.,Ltd.,CAAC,Shanghai 200335,China)

机构地区:[1]上海民航新时代机场设计研究院有限公司,上海200335

出  处:《交通科技》2024年第3期24-29,共6页Transportation Science & Technology

基  金:上海民航新时代机场设计研究院有限公司科研项目(KJ-20230901)资助。

摘  要:为建立机场道面传力杆接缝的三维精细模型,采用单因子轮换法,对影响道面接缝传荷能力的诸多因素进行分析,结果表明,传荷系数LTE与传力杆直径、面层及基层模量呈现正相关关系;与道基反应模量、面层厚度及传力杆间距呈现负相关关系。采用方差分析进一步考察多因素的综合影响效果,影响程度由大到小依次为:道基反应模量、道面板厚度、传力杆间距、传力杆直径、杆-混凝土摩擦系数,而其余因素影响不显著。A high accuracy three-dimensional model of doweled joint in airport pavement was established.The single-factor rotation method was used to analyze the various influencing factor on load transfer capacity of pavement joints.The results showed that the LTE(load transfer efficiency)is positively correlated with dowel bar diameter and the modulus of the slab and base.Conversely,there is a negative correlation with foundation reaction modulus,slab thickness,and dowel bar spacing.For further research on comprehensive effect of multiple factors on load transfer capacity,variance analysis on test data were used.The results showed that the degree of influence on joint load transfer capacity in descending order is as follows:foundation reaction modulus,slab thickness,dowel bar spacing,dowel bar diameter,and friction coefficient between dowel and concrete,while other factors have no significant influence on load transfer capacity.

关 键 词:有限元模型 传荷能力 影响因子 正交试验 方差分析 

分 类 号:V351.11[航空宇航科学与技术—人机与环境工程] U416.01[交通运输工程—道路与铁道工程]

 

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