A construction method for reconstruction of old bridge piers

A construction method and pier column technology, applied in bridges, bridge construction, bridge maintenance, etc., can solve the problems of difficult control of construction quality, complex construction technology, low construction precision, etc., and achieve high promotion and application value, obvious social benefits, shorten The effect of blocking time

Active Publication Date: 2011-12-21
CHINA RAILWAY 24TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method takes too long to construct, costs a lot, has complex construction techniques, is difficult to control construction quality, and has relatively low construction precision, so it is not suitable for reconstruction projects of old urban rail piers that require short time and high precision.

Method used

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  • A construction method for reconstruction of old bridge piers
  • A construction method for reconstruction of old bridge piers
  • A construction method for reconstruction of old bridge piers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Embodiment: first cut off the old pier column and cut off the column body 3 and the pad stone 2 to form the remaining column body 4 and the cut surface 5 of the old pier column. Then adopt the mode of symmetrical installation to set a steel sleeve box 6 on the upper end of the remaining column body 4 of the old pier column. A steel formwork 11 is installed on any side of the cylinder 4, a steel formwork 13 is installed on the opposite side of the side of the installed steel formwork 11, a steel formwork 12 and a steel formwork 14 are installed sequentially on the remaining two faces, Form a closed box structure. The fixed connection method between the steel formwork is welding or bolt connection. The four steel formworks are all fixedly connected to the four sides of the old pier 1 through connectors 8, such as bolt connection, anchor bolt connection and the like. Seal the cover plate 5 at the opening 15 on the steel box. The cover plate 5 is fixedly connected to the...

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PUM

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Abstract

The invention relates to a construction method and in particular relates to a construction method for remoulding old pier columns of bridges. The construction method at least comprises the following steps: cutting and removing column bodies at the top end parts of the old pier columns, sleeving steel boxes at the upper ends of the old pier columns from which the column bodies at the top end partsare removed, packaging cover plates at the openings on the steel boxes and grouting the gaps between the cover plates and the top ends of the old pier columns via reserved grouting holes on the coverplates. The construction method has the following advantages: the degree of mechanization is high, thus accelerating the construction progress and shortening the blockage time; therefore the construction method has obvious social benefits; and steel boxes are adopted to remould the existing piers, thus meeting the precision requirement and lowering the construction cost, therefore the construction method has obvious social benefits and higher popularization and application values.

Description

[0001] technical field [0002] The present invention relates to construction methods. In particular, it relates to a construction method for rebuilding old pier columns of bridges. Background technique [0003] In modern cities, subway light rail projects often need to renovate the existing light rail viaducts because the planned transport capacity in the early stage cannot meet the growing passenger flow needs. Since the renovation construction cannot affect the use of the existing light rail elevated for a long time, it is often necessary to complete the renovation construction within a limited time. Usually, before construction and reconstruction, the construction department can only carry out the construction by "pointing out" to the subway ownership department. Usually, the time for pointing out the points is relatively short, and the new beams are replaced by the old beams and the track laying is completed in a short time to meet the needs of traffic. Construction i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
Inventor 张正吴庆润王建民戴志增
Owner CHINA RAILWAY 24TH BUREAU GRP
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