沥青混凝土路面纵向反射裂缝研究  

Study on Longitudinal Reflection Crack of Asphalt Concrete Pavement

作　　者：史奇彬 王芮文[2,3] 曹妍 赵蔚蔚[3] SHI Qi-bin;WANG Rui-wen;CAO Yan;ZHAO Wei-wei(Liyang Traffic Engineering Construction Development Center,Changzhou,Jiangsu 213000,Chia;Jiangsu Senmiao Engineering Quality Inspection Co.,Ltd.,Zhenjiang,Jiangsu 212028,China;Jiangsu Jiaotong College,Zhenjiang,Jiangsu 212028,China)

机构地区：[1]溧阳市交通工程建设事业发展中心,江苏常州213000 [2]江苏省交通技师学院,江苏镇江212000 [3]江苏森淼工程质量检测有限公司,江苏镇江212000

出　　处：《黑龙江交通科技》2023年第3期39-41,共3页Communications Science and Technology Heilongjiang

摘　　要：S341一级公路跨S456东桥头在交工验收后1年后出现了纵向裂缝。课题组通过沉降观测、位移观测、横坡判断等方式进行裂缝稳定性判断,除横坡度有变化外,位移和沉降数据均显示路基稳定。通过使用千分尺对裂缝宽度变化进行精准量测,并使用时间序列判断方法,分析时间序列的拟合直线斜率,得出裂缝发展后并未及时出现稳定的结论,经持续观测,时间序列拟合直线斜率趋向于平缓,判定裂缝已经稳定。据此对裂缝进行加固处理。Longitudinal cracks appeared at the east bridgehead of one first-class highway crossing S456 one year after handover and acceptance.The research group judges the crack stability through settlement observation,displacement observation and cross slope judgment.Except for the change of cross slope,the displacement and settlement data show that the subgrade is stable.By accurately measuring the change of crack width with a micrometer and using the time series judgment method,the slope of the fitting straight line of the time series is analyzed.It is concluded that the stability does not appear in time after the crack development.After continuous observation,the slope of the fitting straight line of the time series tends to be gentle,which determines that the crack has been stable.The cracks are reinforced accordingly.

关 键 词：路基纵向裂缝 反射裂缝 时间序列分析 沉降观测 

分 类 号：U416.217[交通运输工程—道路与铁道工程]