在山东某高速公路路段柔性基层埋设光纤光栅传感器,以进行柔性基层结构的应变场测试.根据高速公路铺设中的实际情况提出传感器埋设方案,成活率达100%.当汽车通过时,对应变场进行监测,测试结果表明:监测结果与路基所受应力相符,光纤光栅传感器用来测量高速公路柔性基层应变具有明显优势. A fiber grating sensor was embedded in the flexible grass-roots of a highway in Shandong Province to carry out the strain field test of the flexible grass-roots structure.According to the actual situation in the highway laying, the sensor buried scheme was put forward with 100% survival rate.When the car passed, The test results show that the monitoring results are consistent with the stress of the subgrade, and the FBG sensor has obvious advantages for measuring the strain of the flexible grass-roots of the expressway.