Bridge loading test deflection testing instrument

Abstract

The invention relates to the technical field of bridge deflection tests, in particular to a bridge loading test deflection testing instrument. The technical scheme is that the bridge loading test deflection testing instrument comprises an instrument tank box and a leveling instrument which is arranged on the top face of the instrument tank body and used for measuring the levelness of the top face of the instrument tank body, and side face opening holes are formed in the side faces of the tank body. Three springs are fixedly hung on the upper portion of the tank body, a testing platform is connected at the lower ends of the springs, a testing instrument support is fixedly arranged above the testing platform, and the deflection testing instrument is fixedly arranged on the testing instrument support. A turn buckle which is used for adjusting the lengths of the springs before a deflection test is hung below the testing platform. The upper end of a deflection testing rope is fixedly arranged at the lower end of the turn buckle, and the lower end of the deflection testing rope is connected with a counterweight block placed on the ground. A large hang ring is arranged on the top face of the outer portion of the tank body. The bridge loading test deflection testing instrument is reasonable in structural design, convenient to manufacture, mount and arrange, high in deflection test precision, capable of effectively solving the problems that labor and materials are consumed, working at heights is needed, mounting and dismounting are troublesome, the test precision is hard to guarantee and the like of an existing deflection test system in load tests.

Description

technical field [0001] The invention relates to the technical field of bridge deflection testing, in particular to an instrument for bridge load test deflection testing. Background technique [0002] Bridge structure deflection test is one of the important parameters for bridge superstructure detection and technical condition assessment. At present, the bridge load test is generally used to collect the change of bridge deflection under a specific load, so as to reflect the overall stiffness of the bridge structure, so as to judge the health status of the bridge in service. [0003] At present, in the bridge load test, the commonly used deflection test method is the dial indicator test method. That is to set up a bracket under the bridge structure, fix the dial indicator on the bracket, and the contact pin of the dial indicator is in contact with the bottom of the beam. The deflection test of the beam body under various working conditions is realized by the above method. W...

AI Technical Summary

Problems solved by technology

When this method is tested, it needs to be tested point by point, and multiple testers are required to complete the operation; and the test process is slow, which affects the test efficiency

In addition, due to the limitation of the accuracy of the level instrument, this method is only suitable for the deflection test of long-span bridge structures

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