A Measuring Device for Vertical Displacement of Bridge Beam Body

Abstract

The invention discloses a measuring apparatus for vertical displacement of a bridge beam body. The measuring apparatus for the vertical displacement of the bridge beam body comprises a ruler body, a transverse rotating disc and a transverse positioning plate from top to bottom; the ruler body is fixed on the transverse rotating disc, and the transverse rotating disc is connected with the transverse positioning plate by virtue of a rotating shaft; and the ruler body, the transverse rotating disc and the rotating shaft are coaxial and can rotate relative to the axial direction of the transversepositioning plate. The transverse positioning plate provides a two-level axial rotation degree of freedom by adding a rubber strip, so that the installation condition of uneven bottom surfaces of different bridge bodies can be satisfied; and the ruler body is formed by connecting different numbers of ruler components, and the length of the ruler body can be adjusted according to different bridge types and the geographical environment. When in actual application, the measuring apparatus is integrally inversely fixed on the bottom surface of a beam body, and is convenient for rapidly and accurately measuring the vertical displacement of the beam body as a novel leveling staff. By adopting the measuring apparatus for the vertical displacement of the bridge beam body, the technical difficulties in the conventional measuring technology that the measuring and preparation time is long, an additional support is needed, the manpower requirement is high, and the error is large can be solved.

Description

technical field

[0001] The invention relates to the field of bridge displacement measuring tools, in particular to a measuring device for the vertical displacement of a bridge girder body. Background technique

[0002] In the process of bridge inspection, it is often necessary to set up instruments under the bridge to measure the vertical deflection of the bridge and evaluate the deformation of the bridge. The commonly used measurement method is to erect multiple temporary supports along the width direction of the bridge at the bottom of the bridge, and arrange displacement gauges on the top of the temporary supports, and obtain the vertical displacement of the bridge girder by manually reading the data. However, such a measurement method is often limited by the environment of the lower part of the bridge. For example, it is difficult to implement if it passes through water or is required to open to traffic. At the same time, this solution will consume a lot of preparation t...

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