Bridge deflection detection method

Abstract

The invention provides a bridge deflection detection method comprising the following steps that a. multiple inclination angle values corresponding to multiple specified points on a bridge are acquired; b. fitting of an inclination angle function f(x) is performed based on the multiple inclination angle values; and c. a deflection value I of a point to be detected is acquired according to the formula (which is expressed in the specification), wherein the interval [a, b] is an interval formed by the initial point of the inclination angle function and the point to be detected. The cross section inclination angle values measured by an inclinometer are processed by adopting an immediate integration method so that the mechanical concept is clear, the method is easy and convenient, the accuracy is better than that of a least square method, and other bridge information is not required apart from the cross section rotating angle and the cross section position.

Description

technical field [0001] The invention belongs to the field of bridge detection, and in particular relates to a bridge deflection detection method. Background technique [0002] The deflection of the bridge is used to measure the bending deformation of the bridge. By detecting the deflection of the bridge, you can experience the design and construction quality of the bridge. At the same time, by monitoring the deflection changes at specific positions of the bridge on a regular or real-time basis, you can also understand the changes in the stiffness of the bridge, so as to monitor Health status of the bridge structure. [0003] The traditional bridge deflection measurement methods mainly include GPS method, total station method, traditional leveling method, connecting pipe or pressure transmitter method. In recent years, the inclinometer method has been gradually applied to bridge deflection detection. Several inclination values ​​of several sections of the bridge are measured...

AI Technical Summary

Problems solved by technology

[0005] 2. The above-mentioned methods all involve complex mathematical calculations. First, they need to solve the eigenvalues ​​and eigenvectors of the bridge under test, which increases the difficulty of popularizing the inclinometer method to a certain extent.

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