High-pier pouring forming method applied to bridge construction

A molding method and bridge construction technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve problems such as difficulty in ensuring quality, and achieve the effects of high practical and popularization value, reliable environmental protection, and convenient implementation.

Active Publication Date: 2013-12-11
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high pier pouring molding method applied to bridge construction, which mainly solves the problem in the prior art that it is difficult to ensure the quality of high bridge pier pouring in cold weather construction

Method used

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Examples

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Embodiment

[0025] The following is an example of the construction of a high pier body of a railway bridge in a cold area. Assuming that the height of the high pier to be poured is 106m, in order to ensure that the segmental assembled beams are assembled according to the planned construction period, the 25-28# pier needs to be operated in parallel and meet the progress of 1.6m~1.9m / day to meet the planned construction period. In order to speed up the construction progress, reduce the number of formwork turnover and increase the time for pier heat preservation, it is necessary to configure 14m / pier formwork and pour 12m each time.

[0026] The general principle of construction: the construction of high piers adopts the scheme of construction in the insulation shed, that is, the construction personnel operate and the formwork is lifted in the insulation shed. In order to ensure construction efficiency and concrete heat preservation time, a 24m high heat preservation shed is first built outs...

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PUM

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Abstract

The invention discloses a high-pier pouring forming method applied to bridge construction. The high-pier pouring forming method is characterized by comprising the following steps that (1) a heat insulation shed is built; (2) multiple sections of equilong templates are adopted to be superimposed to form a high-pier pier body template inside the heat insulation shed; (3) on the basis of the formed high-pier pier body template, a high-pier pier body with the same height as the high-pier pier body template is poured inside the heat insulation shed in one step; (4) all templates under the topside template are dismounted, and in addition, the topside template is used for the template installation support during the pouring of the lower section of pier body; (5), the pouring height of each section of later high-pier pier body is the sum of the heights of the templates except the topside template in the step (4), and the high-pier pier bodies are sequentially poured until the pouring is completed; and (6) the high-pier pier bodies are maintained in the heat insulation shed to carry out heat insulation maintenance until the final formation is realized. Through the scheme, the high-pier pouring forming method has the advantages that the influence of cold weather on the bridge construction is avoided, the construction quality is ensured, and high practical values and promotion values are realized.

Description

technical field [0001] The invention relates to a bridge construction technology, in particular to a high pier pouring forming method applied in bridge construction. Background technique [0002] Bridge construction has the characteristics of long period, poor construction environment and high technical difficulty, especially in areas with poor geographical environment. For example, Shuozhou City, Shanxi Province has a continental monsoon climate, with long winters, spring and autumn, simultaneous rain and heat, strong solar radiation, long sunshine hours, large temperature differences, short frost-free period, dry and windy are the main characteristics of the regional climate. The annual average temperature in this area is 3.9-7.2°C, the extreme maximum temperature is 37.9°C, and the extreme minimum temperature is -40.4°C. According to the railway engineering climate division, it is a cold area. [0003] There are many bridge construction environments in cold areas like ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/02
Inventor 苏春生李维瑞张海云李向海郭胜朝侯驰郭建玲朱勇霞
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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