同板弯沉差比较值脱空评定标准研究  

Research on Evaluation Standard of Void in Comparison Value of Same Slab Deflection Difference

作　　者：朱春福[1,2] 程培峰 ZHU Chun-fu;CHENG Pei-feng(College of Civil Engineering,Northeast Forestry University,Harbin 150040,China;College of Horticulture and Landscape Architecture,Northeast Agricultural University,Harbin 150030,China)

机构地区：[1]东北林业大学土木工程学院,哈尔滨市150040 [2]东北农业大学园艺园林学院,哈尔滨市150030

出　　处：《公路》2022年第4期46-55,共10页Highway

基　　金：黑龙江省自然科学基金项目,项目编号LH2019C072。

摘　　要：依据水泥混凝土路面使用寿命的衰减程度划分脱空程度,在同板弯沉差的基础上以同板弯沉差比较值作为脱空评定的标准,符合路面结构的实际工作状况,并能减小道路差异、检测方法对脱空评定的影响,提高标准的适用性。该标准在鹤大高速、烟威高速公路上的应用效果表明:对板底脱空的识别率达100%,对脱空程度的识别准确率可达92.3%。The void degree is divided according to the attenuation degree of service life of cement pavement.Based on the deflection difference of the same slab,the comparison value of deflection difference of the same slab is taken as the void evaluation standard,which accords with the actual working condition of pavement structure,reduces the influence of road difference and detection method on void evaluation,and improves the applicability of the standard.The application effect of this standard on the Hegang-Dalian Expressway and Yantai-Weihai Expressway shows that the recognition rate of slab bottom void is 100%,and the recognition accuracy rate of void degree is 92.3%.

关 键 词：水泥混凝土路面 脱空程度 同板弯沉差 比较法 评定 

分 类 号：U416.216[交通运输工程—道路与铁道工程]