总弯沉比及其在机场刚性道面板底脱空判定中的适用性  

Total Deflection Ratio and Its Applicability in Void Identification of Airport Rigid Pavement

作　　者：凌建明[1,2] 刘海伦[1,2] 马正好[3] 唐龙 LING Jianming;LIU Hailun;MA Zhenghao;TANG Long(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China;Key Laboratory of Infrastructure Durability and Operation Safety in Airfield of CAAC,Tongji University,Shanghai 201804,China;East China Civil Aviation Engineering Quality Supervision Station,Shanghai 200335,China;China Airport Planning and Design Institute Co.,Ltd,Shengyang 110041,China)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]同济大学民航飞行区设施耐久与运行安全重点实验室,上海201804 [3]民航专业工程质量监督总站华东地区监督站,上海200335 [4]民航机场规划设计研究总院有限公司,辽宁沈阳110041

出　　处：《同济大学学报（自然科学版）》2023年第7期1085-1093,共9页Journal of Tongji University:Natural Science

摘　　要：提出了一种板底脱空判定弯沉指标——总弯沉比(RTD),分析了其理论特征;为探究RTD在机场刚性道面板底脱空判定中的适用性,基于Abaqus有限元软件建模,以弯沉比和截距为对比对象,计算分析了道面结构参数、接缝传荷能力和脱空参数等对指标的影响。结果表明:相比弯沉比和截距,RTD与道面结构参数相关性更高,可据此建立相对精确的判定标准;此外,RTD在对脱空参数敏感的同时可避免接缝传荷能力与板底脱空的耦合影响。综合而言,RTD在机场刚性道面板底脱空判定中具有更好的适应性。A new deflection index,total deflection ratio(RTD),was proposed for v oid identification,whose theoretical characteristics were analyzed.To investigate the applicability of RTD in void identification of airport rigid pavement,finite element models were built using Abaqus.The influences of pavement structure parameters,joint load transfer capacity and void parameters on deflection indexes were analyzed.The results show that,compared with the deflection ratio and intercept,RTD has a higher correlation with pavement structure parameters,and a relatively accurate criterion can be established based on the higher correlation.In addition,RTD is sensitive to void parameters and can avoid the coupling effect of joint load transfer capacity and void beneath slab.Overall,RTD is more applicable in the void detecting of airport rigid pavement.

关 键 词：机场工程 刚性道面 弯沉 板底脱空 

分 类 号：V315.11[航空宇航科学与技术—航空宇航推进理论与工程] U416.2[交通运输工程—道路与铁道工程]