Hydraulic creeping formwork construction device for hollow high pier of expressway bridge and using method of hydraulic creeping formwork construction device

Abstract

The invention discloses a hydraulic creeping formwork construction device for a hollow high pier of an expressway bridge. The device comprises a pressure adjusting device, a driving device and a driven device, the pressure adjusting device is arranged on the driven device, and the driving device is arranged on the driven device. The invention belongs to the technical field of bridge pier construction, and particularly relates to the hydraulic creeping formwork construction device for the hollow high pier of the expressway bridge and a using method. Pressure of the external driven device is adjusted through the pressure adjusting device, on one hand, errors of pre-tightening force of piers with different diameters and the internal pre-tightening device are compensated, on the other hand, the pre-tightening force of the driven device is different in the climbing process and the standing process, the pre-tightening force is reduced in the climbing process, the climbing resistance and the working load of a pump station are reduced, the pre-tightening force is increased in the fixed state, the equipment is more stable in the concrete pouring process, and the problem that materials and working hours are seriously wasted in the existing highway bridge hollow high pier hydraulic creeping formwork construction mode in the market is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of bridge pier construction, and specifically refers to a hydraulic climbing formwork construction device for a hollow high pier of an expressway bridge and a method for using it. Background technique [0002] With the economic development of our country and the vigorous promotion of infrastructure construction, more and more expressways run through various regions of our country, but our country has a vast territory, and the topography and landforms of various places vary greatly. Common expressways laid on the ground pass through valleys, etc. In the terrain, it is necessary to add high piers to ensure that the expressway itself does not produce a large drop. In the current production process of high piers, a large number of scaffolds are built inside the hollow high piers to fix the concrete pouring. Mold, due to the high height of the pier, using this irrigation method requires a huge amount of scaffoldi...

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Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a hydraulic climbing formwork construction device for hollow high piers of expressway bridges and its use method. The pressure of the external driven device is adjusted by the pressure regulating device, and on the one hand, it compensates for different diameters. The pier, the error of the preload of the internal preload device, on the other hand, makes the difference between the preload of the driven device during the climbing process and the standing process, and reduces the preload during the climbing process, reducing the climbing resistance and pumping station Increase the pre-tightening force in the fixed state, make the equipment more stable during the concrete pouring process, effectively solve the serious waste of materials and working hours in the construction method of hydraulic climbing formwork for hollow high piers of expressway bridges on the market The problem

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