An Anchorage Structure Displacement Monitoring Device Based on Capacitance Change

Abstract

The invention discloses an anchorage structure displacement monitoring device based on capacitance change. The anchorage structure displacement monitoring device comprises an anchorage detection rod and an error detection rod which are arranged in an anchorage chamber in parallel; one end of the anchorage detection rod is connected to an anchorage surface, the anchorage detection rod can move in the axial direction of the anchorage detection rod along with the deformation of the anchorage surface, and the other end of the anchorage detection rod is provided with a first capacitor plate perpendicular to the axis of the anchorage detection rod; the end, close to the anchorage surface, of the error detection rod is connected with the side wall of the anchorage chamber through a fixing rod, and the other end of the error detection rod is provided with a second capacitor plate opposite to the first capacitor plate; the first capacitor plate and the second capacitor plate form a capacitor and are connected with a capacitance change monitoring device, and the capacitance change monitoring device is further connected with a displacement monitoring computer. Compared with the prior art, theanchorage structure displacement monitoring device can accurately monitor the deformation of the anchorage surface in the anchorage room in a long time without the influence of the 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 based on capacitance change. 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 bearing structures...

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

Images