基于弯沉盆几何形态指标的沥青路面裂缝病害定量表征研究  

Research on Quantitative Characterization of Asphalt Pavement Cracks Based on Geometric Index of Deflection Basin

作　　者：肖满哲 汪林 成豪杰 于晓贺 罗蓉[1,2] XIAO Manzhe;WANG Lin;CHENG Haojie;YU Xiaohe;LUO Rong(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;Hubei Provincial Highway Engineering Technology Research Center,Wuhan 430063,China;Wuhan Hanyang Municipal Construction Group Co.Ltd.,Wuhan 430050,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063 [2]湖北省公路工程技术研究中心,武汉430063 [3]武汉市汉阳市政建设集团有限公司,武汉430050

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第6期1085-1089,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：湖北省重点研发计划项目(2020BCA085);湖北省交通运输厅科技项目(2020-2-1-2)。

摘　　要：文中通过开展不同形式裂缝病害路段的代表弯沉盆指标计算,构建裂缝类病害在路面内部的量化指标,进而提出一种基于弯沉盆几何形态指标的裂缝病害定量表征方法,并结合依托工程进行了验证分析.结果表明:横向裂缝路段的Q_(r1)指标均位于1.4~2.1,Q_(d1)指标都大于50μm,而纵向裂缝的Q_(r1)指标均位于1.2~1.4,Q_(d1)指标相对较小,处于20~40μm;整体上,横纵向裂缝路段的Q_(r1)大致以1.4为界.因此,可采用Q_(r1)、Q_(d1)来定量表征横纵向裂缝病害的分布特征.Through the calculation of representative deflection basin indexes of different types of crack disease sections,the quantitative indexes of crack diseases in the pavement were constructed,and a quantitative characterization method of crack diseases based on the geometric shape indexes of deflection basin was proposed,which was verified and analyzed by the supporting project.The results show that the Q_(r1)indexes of the transverse cracked sections are all between 1.4 and 2.1.Q_(d1)indexes are all greater than 50μm,while Q_(r1)indexes of longitudinal fractures are all between 1.2 and 1.4.Q_(d1)index is relatively small,ranging from 20 to 40μm.On the whole,the Q_(r1)of transverse and longitudinal cracked sections is roughly bounded by 1.4.Therefore,Q_(r1)and Q_(d1)can be used to quantitatively characterize the distribution characteristics of transverse and longitudinal crack diseases.

关 键 词：道路工程 落锤式弯沉仪 弯沉差 弯沉比 裂缝表征 

分 类 号：U414.1[交通运输工程—道路与铁道工程]