Device and method for judging critical balance of rotation of bridge and computing method

Abstract

The invention discloses a device for judging the critical balance of the rotation of a bridge, a method for judging the critical balance of the rotation of the bridge, and a method for calculating thestatic friction coefficient of a rotating spherical hinge in the rotation construction of the bridge. The device comprises a beam body, the rotating spherical hinge and a control device. A first jackand a second jack for loading the beam end of the beam body are arranged under the beam end of the beam body. One end, close to the rotating spherical hinge, of the beam body is symmetrically provided with a first adapter plate and a second adapter plate. The first adapter plate and the second adapter plate are respectively connected with a first displacement sensor and a second displacement sensor for measuring displacement. The critical balance state of the rotation of the beam body and the e rotating spherical hinge are searched out during loading, and the measurement of the static friction coefficient of the rotating spherical hinge in the key technology in the rotation construction of the bridge is achieved. The objective of the invention aims at improving the testing efficiency andconstruction safety, and finally achieving the improvement of the rotation construction of the bridge and the decrease of the safety risk of construction.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a device for judging the critical balance of bridge rotation, a method for judging the critical balance of bridge rotation and a method for calculating the static friction coefficient of rotating spherical hinges for bridge swivel construction. Background technique [0002] With the rapid development of traffic road network and urban construction, there are more and more bridges spanning railways, highways, rivers and urban roads. The operation of the road has a great impact, resulting in long-term traffic congestion or even paralysis. In recent years, the total tonnage and span of swivel bridge construction in China have been developed and improved in a breakthrough way, and the research technology of swivel bridge construction control has become more and more mature and reliable. However, most swivel bridges are characterized by large tonnage , large span, and straight line,...

AI Technical Summary

Problems solved by technology

This method of manually recording the loading force and estimating the critical force based on experience is not very accurate, and the safety risk of the site environment is high, and the estimated critical value leads to a larger or smaller maximum static friction torque and friction coefficient in the final calculation. Standardized operations cannot be realized, and the construction quality is greatly affected by human factors

In addition, during the recording process, the data cannot be processed in real time and the loading of the control force can be fed back. This is very likely to cause overload, resulting in out-of-control rotation, and the overturning of the beam body. The control of safety risks is very limited.

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