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Construction process for replacement of large-tonnage bridge support

A technology of bridge bearings and construction techniques, applied in bridges, bridge parts, bridge maintenance, etc., can solve problems such as bearing capacity of temporary old bearings that have not been considered, and achieve the effect of solving construction problems and quickly replacing work

Active Publication Date: 2018-08-24
ROAD & BRIDGE INT +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention only designed temporary old bearings for simply supported conditions, and did not consider the bearing capacity of temporary old bearings under large tonnage

Method used

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  • Construction process for replacement of large-tonnage bridge support
  • Construction process for replacement of large-tonnage bridge support
  • Construction process for replacement of large-tonnage bridge support

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Embodiment Construction

[0035] The following will describe in detail with reference to the drawings in the embodiments of the present invention.

[0036] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , for the construction technology of large-tonnage bridge bearing replacement, the specific steps are as follows:

[0037] Build a construction platform 3 with sufficient strength, rigidity and stability, and bear vertical and horizontal thrust through scaffolding. The construction platform 3 has a construction load capacity of more than 20 tons and can withstand impact loads. The space between the construction platform 3 and the bottom of the box girder 1 is maintained at a height of 1.6m-2m to ensure the ease of operation for construction personnel. The construction platform 3 includes a translation track 4 arranged above, and the translation track 4 is flush with the bottom surface of the old support 2 of the box girder 1 .

[0038...

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Abstract

The invention relates to the field of building construction, in particular to a construction process for replacement of a large-tonnage bridge support. The process comprises the steps that firstly, manholes of diaphragm plates in box girders are temporarily and locally reinforced, a temporary support is arranged, jacks are placed, counter-force replacement is completed when no vertical displacement of fulcrums of girder bodies is achieved, and the temporary support and an old support are subjected to joint load carrying; and then a method of reverse construction is adopted, a padstone of the old support is cut and removed, a new support is installed, the temporary support is released, the counter-force replacement of the new support and the old support is completed, and thus the replacement work of all old supports is completed. The construction process for the replacement of the large-tonnage bridge support is mainly applied to the replacement construction process of the large-tonnageold supports, the old support replacement project is efficiently completed by two times of counter-force replacement, and good real effect is achieved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a construction technique for replacing large-tonnage bridge supports. Background technique [0002] With the continuous acceleration of the bridge construction process in our country, the bridge base continues to increase, and the existing bridges gradually have a huge demand for management and maintenance. Among them, the old bearing of the bridge is an important part of the bridge. Due to the influence of the construction environment or load, it is prone to corresponding damage. Once damaged, it is necessary to replace the old bearing. [0003] The replacement of continuous girder bridges or other large-tonnage old bearings, because of the huge reaction force of the old bearings, the replacement process is more complicated than the conventional plate rubber old bearings, and the construction is difficult and dangerous. At the same time, the replacement of the old bearings ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D19/04
CPCE01D19/04E01D22/00
Inventor 彭永胜石兆斌王佳贵徐绍尉崔毅康雪成
Owner ROAD & BRIDGE INT
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