Pushing system and method for PLC multipoint synchronous three-dimensional hydraulic bridge

Abstract

The invention discloses a pushing system and method for a PLC multipoint synchronous three-dimensional hydraulic bridge. The pushing system comprises a pushing monitoring system and multiple groups ofwalking-type three-dimensional hydraulic pushing devices for pushing pushed steel box beams, and each pushing buttress is provided with a left temporary supporting base and a right temporary supporting base which are symmetrically distributed. The pushing method includes the steps of 1, constructing assembly jig frames and temporary buttresses; 2, constructing a three-dimensional adjusting device, the pushing devices and the temporary supporting bases; 3, carrying out steel-box-beam assembling and synchronous pushing; 4, carrying out steel-box-beam pushing. According to the pushing system andmethod for the PLC multipoint synchronous three-dimensional hydraulic bridge, steel box beams are synchronously pushed forwards multiple times through the multiple groups of walking-type three-dimensional hydraulic pushing devices, pushing controlling is easy and convenient, synchronous action of the multiple groups of walking-type three-dimensional hydraulic pushing devices can be easily and conveniently achieved, pushing positions are flexibly distributed, guide beams and sliding rail beams for longitudinal pushing are not required, self-balancing pushing is really achieved, and the pushingprocess is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a PLC multi-point synchronous three-dimensional hydraulic bridge jacking system and a jacking method. Background technique [0002] With the continuous improvement of my country's bridge design and construction technology, a large number of continuous steel box girder bridges have emerged in the fields of highways, urban transportation, and railways. The jacking method is widely used in its construction due to the advantages of less land occupation, no impact on the traffic under the bridge, no need for large lifting equipment, safety and reliability, and low cost. The jacking method construction is to set up a prefabricated field behind the abutment along the bridge axis direction, and set up steel guide beams, temporary piers, slideways, horizontal jacks (also called jacking force devices or jacking force devices), etc., the actual During construction, ...

AI Technical Summary

Problems solved by technology

However, the multi-point jacking method and the corresponding jacking system currently used have the following defects and deficiencies to varying degrees: First, the synchronization accuracy of the existing jacking equipment is not enough, and there are inevitably multiple jacking machines in the jacking process The action error of the equipment; second, the existing jacking construction method and jacking system are difficult to control the closing accuracy of the jacking under large slopes and linear complex situations; third, without fully automatic digital control, it is difficult to grasp the accuracy of the force value ; Fourth, more operators are required, labor input is large, labor-intensive and time-consuming, and construction efficiency is low; Fifth, part of the multi-point push construction also needs to use guide beams for traction, the construction investment is large, and the construction process is complicated

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