Correcting and resetting method for pier stud of bridge

Abstract

The invention discloses a correcting and resetting method for a pier stud of a bridge. The method comprises the steps of: 1) vertically jacking a beam body at an inclined pier stud and taking out a support; 2) installing a horizontal sliding system, and dropping the beam body; 3) installing a reaction frame and horizontally propelling a synchronous jack; 4) applying a horizontal thrust to push the inclined pier stud by the horizontal jacking synchronous jacking jack so as to reset the inclined pier stud vertically; 5) installing a vertical jacking synchronous jack and jacking the beam body; and 6) installing the support and dropping the beam body. According to the correcting and resetting method provided by the invention, only a horizontal thrust contrary to the inclined thrust of the pier stud is applied, and a novel sliding face is re-manufactured before push, so that the horizontal thrust is small, and precise resetting can be ensured by precisely controlling the displacement of the horizontal jacking synchronous jacking jack. Compared with current methods, the correcting and resetting method is more convenient and precise.

Description

technical field [0001] The invention relates to a bridge disease treatment construction method, in particular to a bridge pier column deviation correction and reset method. Background technique [0002] It is very common for bridges with curved slopes to have skewed piers (e.g. figure 1 As shown), it poses a serious threat to the safety of bridge structure operation. The main reasons for the offset and inclination of pier columns are: figure 2 As shown, because the sliding surface of the support is not installed horizontally, a thrust in the horizontal direction is generated, which continuously pushes the pier to produce deflection. The generation of horizontal thrust is due to the component force in the horizontal direction generated by the static load of the beam body and the bridge deck system, the dynamic load of the vehicle, etc., and the friction difference between the beam body and the support when the temperature changes. Such as image 3 As shown, under the co...

AI Technical Summary

Problems solved by technology

[0004] For the treatment of the above-mentioned diseases, the longitudinal correction and reset of the inclined pier column is the key. The existing correction and reset method is to use steel cables to pull the cover beam of the inclined pier column obliquely, so that the pier column overcomes the friction between the beam body and the support. However, the defects of this method are that the pulling force required for deviation correction and reset is too large, and the reset is difficult. The second is that the displacement of the pier cannot be precisely controlled, and it is difficult to ensure accurate reset

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