Arch bridge deflection measuring apparatus

Abstract

The invention relates to an arch bridge deflection measurement device, comprising two arch steel tubes, a tensional suspension girder and a displacement meter, wherein, the two arch steel tubes are symmetrically arranged at two sides of an arch bridge, and are parallel with axle wires of the two sides of the arch bridge; arch bases of the steel tubes can either be rigid mounts or hinge mounts andbe fixed on the riverside; the arch of each steel tube is supported on the lateral of the arch bridge through a directional support; a plurality of vertical hanging sticks are extracted from the archofeach steel tube, and the hanging sticks at corresponding positions of two sides are connected with each other through the tensional suspension girder passing through the bottom of the bridge; and the displacement meter is supported on the tensional suspension girder to measure the deflection on the point. The arch bridge deflection measurement device is mainly used for measuring displacement ofth e point on the arch bridge. The device avoids the effect on the deflection measurement generated when a bridge pier is declined; the displacement meter supported by the tensional suspension girderstructure acquires and converts signals, reads at the riverside, thereby avoiding errors because of different observing methods and experience of an observer; the device is not restricted by climate conditions and solves the problem that a measurement instrument can not be fixed over a river. With the adoption of the tensional suspension girder, the device has the advantages of light deadweight ofthe structure and economization.

Description

technical field [0001] The present invention relates to a structure and, more particularly, to a device for measuring the deflection of an arch bridge. Background technique [0002] Most of the long-span railway bridges span large rivers and canyons. The deflection measurement of traditional railway bridges mostly adopts the method of spring steel wire. When there is water under the bridge or there is no fixed point, rulers, theodolites or total stations are often used. Take measurements. These methods are still widely used in my country's bridge inspection and acceptance appraisal. In the long-term measurement work, many professional inspectors have issued and innovated the measurement technology based on the above methods. However, in practical applications, the above There are still many unsatisfactory points in the method, roughly as follows: [0003] 1. The spring wire drawing method is used to measure the deflection of bridges on land. The measured value includes the ...

AI Technical Summary

Problems solved by technology

The use of this device is not limited by climatic conditions; regardless of whether the bottom of the arch bridge is a river or not, this structural system can measure, which solves the problem that the measuring instrument cannot be fixed on the river

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