Control system for integrated synchronous jacking of cut pier and control method

Abstract

The invention discloses a control system for integrated synchronous jacking of a cut pier and a control method. The control system comprises two hydraulic jacking devices for providing jacking power, two hydraulic circuits connected with the two hydraulic jacking devices respectively, two oil feeding amount adjusting devices and a jacking balancing state monitoring device, wherein the two oil feeding amount adjusting devices are installed on the two hydraulic circuits respectively, and the jacking balancing state monitoring device performs real-time monitoring to a balancing state of a structure needing to be jacked in the jacking process and controls the two oil feeding amount adjusting devices according to monitoring results. The control method comprises the steps of jacking preparation and jacking, upward jacking is performed to the structure through the two hydraulic jacking devices in actual jacking until the structure is jacked to a preset height, and timely dynamic deviation rectification is carried out to the structure. The control system for integrated synchronous jacking of the cut pier and the control method are reasonable in design, high in automation, good in coordinating performance and safety performance and simple and convenient to control, enables the jacking process to be smooth and efficient, and can effectively solve the construction problem that unbalanced elevation discrepancy limitation in the pier cutting integration jacking process cannot be automatically controlled.

Description

technical field [0001] The invention belongs to the technical field of bridge structure jacking construction, in particular to a control system and a control method for the integral synchronous jacking of cutting bridge piers. Background technique [0002] The use of multiple jacks to achieve synchronous jacking of the structure is a commonly used construction method with relatively high technical difficulty in bridge construction. In actual construction, the key to construction control is to realize the simultaneous operation of multiple jacks and the stable jacking of the jacked structure. At present, the construction control of synchronous jacking mainly controls the jacking speed of each jack through the method of on-site geometric measurement combined with manual switching of the oil pump. This traditional control method has high requirements for structural geometry measurement, and the measurement operation and switching oil pump need to be lifted and suspended, result...

AI Technical Summary

Problems solved by technology

[0004] Nowadays, in the overall jacking construction process of cutting piers, the above-mentioned unbalanced height difference limit control method is widely used, but due to the cross operation of geometric measurement and jacking work, the overall jacking work of cutting piers is discontinuous

At the same time, since it is difficult to continuously monitor the unbalanced height difference on both sides of the cover beam during the jacking process, the unbalanced height difference will exceed the limit; and because the geometric measurement generally needs to stop the jacking operation, Therefore, the jacking speed is slow, which has a great impact on the construction efficiency; in addition, the oil pump operation control adopts manual control methods, and the entire operation process is subject to greater subjectivity, so the process control accuracy is low

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