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Asphalt pavement continuous vertical deformation monitoring sensor based on optical fiber sensing technology
The invention relates to an asphalt pavement continuous vertical deformation monitoring sensor based on an optical fiber sensing technology, and belongs to the technical field of road equipment. The asphalt pavement continuous vertical deformation monitoring sensor is characterized in that the asphalt pavement continuous vertical deformation monitoring sensor is arranged on the bottom portion of an asphalt pavement to be detected, the sensor is placed on a position to be detected after the lower layer of the arrangement layer is pressed and flattened, and then road paving and rolling is directly performed. According to the present invention, the sensor can be used for the static and dynamic loading forms, the spiral steel pipe is close to the road structure layer so as to consequently produce bending deformation, the strain values of each optical fiber grating are real-timely measured, the whole continuous strain curve of the sensor position is fitted by using the polynomial fitting and other methods and by using the optical fiber grating strain values of each discrete point, and the static and dynamic change curve of the road structure layer bottom portion is calculated by using the cross section shape of the curvature strain conversion strip; with the long term data collection, the vertical permanent deformation of the pavement structure can be monitored; and the sensor has effects of low cost, easy use, convenient arrangement, no influence on normal pavement construction, high precision, large measuring range, and capability of testing under the static state and the dynamic state.
Asphalt pavement continuous vertical deformation monitoring sensor based on optical fiber sensing technology
The invention relates to an asphalt pavement continuous vertical deformation monitoring sensor based on an optical fiber sensing technology, and belongs to the technical field of road equipment. The asphalt pavement continuous vertical deformation monitoring sensor is characterized in that the asphalt pavement continuous vertical deformation monitoring sensor is arranged on the bottom portion of an asphalt pavement to be detected, the sensor is placed on a position to be detected after the lower layer of the arrangement layer is pressed and flattened, and then road paving and rolling is directly performed. According to the present invention, the sensor can be used for the static and dynamic loading forms, the spiral steel pipe is close to the road structure layer so as to consequently produce bending deformation, the strain values of each optical fiber grating are real-timely measured, the whole continuous strain curve of the sensor position is fitted by using the polynomial fitting and other methods and by using the optical fiber grating strain values of each discrete point, and the static and dynamic change curve of the road structure layer bottom portion is calculated by using the cross section shape of the curvature strain conversion strip; with the long term data collection, the vertical permanent deformation of the pavement structure can be monitored; and the sensor has effects of low cost, easy use, convenient arrangement, no influence on normal pavement construction, high precision, large measuring range, and capability of testing under the static state and the dynamic state.
Asphalt pavement continuous vertical deformation monitoring sensor based on optical fiber sensing technology
LIU WANQIU (author) / ZHOU HONGMEI (author) / WANG BOSHI (author) / ZHOU ZHI (author)
2015-11-18
Patent
Electronic Resource
English
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