Anchorage structure displacement monitoring device and method based on inductance change

Abstract

The invention provides an anchorage structure displacement monitoring device and method based on inductance change. In the technical scheme, the anchorage structure displacement monitoring device comprises an anchoring detection bar and an error detection bar which are arranged in parallel in an anchorage chamber, wherein one end of the anchoring detection bar is connected to an anchoring surface,the anchoring detection bar can move in the axis direction of the anchoring detection bar along with deformation of the anchoring surface, and a magnet is mounted at the other end of the anchoring detection bar; the end, close to the anchoring surface, of the error detection bar is connected with the side wall of the anchorage chamber through a fixed rod, an inductance coil bracket is mounted atthe other end of the error detection bar, an inductance coil is mounted on the inductance coil bracket, the magnet is located in the inductance coil, the inductance coil is connected with an inductance change monitoring device which is connected with a displacement monitoring computer, and the displacement monitoring computer is used for calculating anchorage structure displacement on the basis ofthe inductance value measured by the inductance change monitoring device. Compared with the prior art, deformation of the anchoring surface in the anchorage chamber can be monitored precisely in a long period of time without being affected by depth of the anchorage chamber.

Description

technical field [0001] The invention relates to the technical field of bridge safety monitoring, in particular to an anchor structure displacement monitoring device and method based on changes in inductance. Background technique [0002] Suspension bridge is one of the most commonly used extra-large and large-scale bridge types. These large-scale bridges are located in various traffic arteries, and the investment is huge, and the investment and maintenance costs are the highest among all bridge types. During the operation process, the traffic flow is very large and the load is heavy, which is of great significance to the construction of the national economy that cannot be underestimated. Once a safety accident occurs on these bridges, it will have serious consequences for the country's economic construction and social stability. Since the anchorage of the suspension bridge bears the horizontal force and vertical reaction force from the main cable, it is one of the main bear...

AI Technical Summary

Problems solved by technology

In the existing patent, the method of using laser to monitor the displacement of the anchorage structure (201210399733.8) has the problem that the laser will be twisted as time goes on, resulting in changes in the shape and position of the spot, which will cause large errors in the monitoring results. The method of monitoring the displacement of the anchor spindle structure (201210394633.6) is not suitable for deeper anchor chambers. When the pressure difference range increases, the monitoring accuracy will decrease accordingly

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