上海交通大学学报

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (02): 220-226.

• 交通运输 • 上一篇    下一篇

基于路面变形速度的弯沉测量方法

张德津1，李清泉1，曹民2，林红2   

  1. （1. 深圳大学 海岸带地理环境监测国家测绘地理信息局重点实验室；空间信息智能感知与服务深圳市重点实验室， 广东 深圳 518060；2. 武汉武大卓越科技有限责任公司， 武汉 430223）
  • 收稿日期:2014-05-04 出版日期:2015-02-28 发布日期:2015-02-28
  • 基金资助:

    国家高技术研究发展计划（863）项目（2012AA112503）资助

Deflection Measurement Methods Based on Velocities of Pavement Deflections

ZHANG Dejin1,LI Qingquan1,CAO Min2,LIN Hong2   

  1. (1. Key Laboratory for GeoEnvironment Monitoring of Coastal Zone of the National Administration of Surveying, Mapping and GeoInformation;  Shenzhen Key Laboratory of Spatial Smart Sensing and Services, Shenzhen University, Shenzhen 518060, China; 2. Wuhan Wuda Zoyon Science and Technology Co. Ltd., Wuhan 430223, China)
  • Received:2014-05-04 Online:2015-02-28 Published:2015-02-28

摘要：

摘要：  为了实现在正常交通速度20~80 km/h下的连续弯沉测量，提出了采用测量路面变形速度反演弯沉的方法.研究利用激光多普勒测振仪测量路面在标准载荷作用下的路面变形速度的方法和路面变形速度提取算法，结合弹性地基上的欧拉伯努利梁理论，推导弯沉盆曲线的两参数方程，采用牛顿迭代法利用路面变形速度反演路面弯沉.基于此方法设计的原型设备已在新疆、陕西、甘肃、天津、湖北等省市进行了近8×104 km的路测实验.结果显示，数据自重复性达到95%以上；与贝克曼梁测量数据对比，数据相关性达到90%以上.该方法一次测量只需要一次采样，测量与路面曲率无关，相对于传统测量方法，其适合于高速、无损测量.实验证明，该方法能满足路网级、逐车道的路面弯沉连续、无损、高密度、高速度测量的要求，具有广阔的使用推广价值.
关键词：  路面； 弯沉测量； 变形速度； 弹性地基梁
中图分类号：  U 418.4+3，TP 23，TP 319文献标志码：  A

Abstract:

Abstract： To meet the demands of continuous deflection measurement at a traffic speed of 20~80 km/h, a novel method was proposed which substituted velocities of pavement deflections for absolute deflection. The measurement method and retrieve algorithm of velocities of pavement deflections with the standard loads were studied by using Doppler laser sensor. Based on the BernoulliEuler beam theory on an elastic foundation, the twoparameter solutions of deflection basin curve were deduced. Pavement deflection was inversed using velocities of pavement deflections with Newton Iteration method. The prototype system based on this method was applied to totally 40 000 km in Xinjiang, Shaanxi, Gansu, Tianjin, Hubei and other provinces in 2014. A large number of experimental data showed that the data repeatability could reach more than 95%. Compared with experimental data by Benkelman beam, its dependency was more than 90%. The method requires only a single measurement sampling and is independent to the curvature of the road, which is suitable for highspeed, nondestructive measurement. The proposed method can meet the requirements of lane by lane, continuous, non-destructive, high-density, high-speed measurement at road network level,  and has extensive promotion value.

Key words: pavement, deflection measurement, velocity of deflection, beam on an elastic foundation