武汉工程大学学报2016，Vol.38Issue(3)：268-272,5.DOI:10.3969/j.issn.1674⁃2869.2016.03.013
基于五维光纤传感器的沥青路面动水压力测量的研究
Measurement of Dynamic Water Pressure of Asphalt Pavement by Five-Dimensional Optical Fiber Sensor
摘要
Abstract
Based on domestic and foreign studies, a method used for measuring the dynamic water pressure of asphalt pavement by five-dimensional optical fiber sensor was proposed. According to the sensing principl, a five dimensional fiber optic sensor was prepared by fixing four optical fiber sensors on a crossbeam. In addition, the concrete cement was used to stabilize and protect the sensor. Test of dynamic water pressure was conducted by embedding the sensor in the asphalt pavement, which was kept in water-saturated state. When the vehicles passed the test section at different speeds, the signals of compressive strain could be transferred to the modulator demodulator by the fiber grating. Therefore, the dynamic water pressure in different directions could be collected during the whole process. It can be concluded that dynamic water pressure presents a continuing exchanging process of positive and negative pressure. The maximum positive pressure is about 0.115 MPa and the maximum negative pressure is about 0.073 MPa. The dynamic water pressure in all directions varies much, but it all increase with the increase of the vehicle speed.关键词
沥青路面/五维光纤传感器/动水压力/现场测量Key words
asphalt pavement/five-dimensional optical fiber sensor/dynamic water pressure/field measure⁃ment分类
交通工程引用本文复制引用
吕栋,胡小弟,周永莲,王富..基于五维光纤传感器的沥青路面动水压力测量的研究[J].武汉工程大学学报,2016,38(3):268-272,5.基金项目
国家自然科学基金资助项目(51278389) （51278389）
湖北省交通厅科技项目(2013-731-1-3) （2013-731-1-3）
武汉市科技计划项目(2014010202010098) （2014010202010098）
