Bridge deflection measurement system and method based on close-range photogrammetry
A technology for bridge deflection and close-up photography, which is used in measuring devices, elasticity testing, and machine/structural component testing. , reduce the effect of field work
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[0119] The bridge deflection measurement system based on close-range photogrammetry described above in the present invention is used for measurement. The object of this measurement is a wooden material with low rigidity and easy to bend and deform to simulate a concrete beam, and a cylindrical steel cylinder is used to simulate a bridge pier. During the measurement process, a load is applied to the wooden board to make it reach a certain deformation, so that the overall deflection curve is similar to that of conventional concrete. The deflection curves of the beams after deformation are almost the same; the target point 11, the control point 12 placed on the pier, and the control point 13 placed on the pole are installed at a higher position in combination with the camera position, so that the No. 1 single-lens reflex camera 6 and No. 2 No. single-lens reflex camera 7 is used to perform overhead imaging, which is similar to the actual bridge position; simulate the actual situat...
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