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Novel quick tensioning construction method for front-blocked jack

A construction method and jack technology, applied in the erection/assembly of bridges, bridge materials, bridges, etc., can solve the problems of large anchor hole center distance, inability to adapt to the center, limited application fields, poor craftsmanship, etc. The effect of threading and speeding up work time

Inactive Publication Date: 2015-03-18
中铁十局集团第四工程有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the prestressed tensioning equipment used in transportation, construction and other engineering in my country is the traditional rear clamping jack, and the exposed steel strands are long, resulting in high cost and waste
At present, there are a few front clip jacks in my country: some anchor hole center distances are too large to adapt to the existing working anchors, and the application fields are very limited; some are not good in manufacturability and inconvenient to load and unload, so they have not been widely used.

Method used

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  • Novel quick tensioning construction method for front-blocked jack
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  • Novel quick tensioning construction method for front-blocked jack

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Embodiment Construction

[0032] The following is a specific embodiment of the invention. The new kilocalorie jack used in this process step is composed of a rear cover 1, a gland 2, a through sleeve 3, a positioning sleeve 4, a piston 5, a cylinder body 6, a tool clip 7, a tool anchor 9 and a front cover 10. The accessories used It includes a transition extension sleeve 11, a limit plate 12, a working clip 13 and a working anchor ring 8, and the extension sleeve is an optional part.

[0033] This embodiment comprises process steps as follows:

[0034] 1. Rapid cutting and threading of steel strands

[0035] The steel strands are threaded and unloaded by the CSJ15-1A steel strand threading machine.

[0036] 2. Quickly install the front clip jack accessories

[0037] ① Install the working clip 13: install the working clip 13 on the steel strand, and fasten the steel strand;

[0038] ②Installing the limit plate 12: install the limit plate 12 matching the diameter of the steel strand with accurate ali...

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Abstract

The invention relates to a novel quick tensioning construction method for a front-blocked jack. The novel quick tensioning construction method is applicable to the tensioning construction of a bridge pre-stressed projects in traffic engineering (such as bridge engineering, railway engineering, highway engineering and municipal engineering) and pre-stressed structure projects in the building industry. According to the novel quick tensioning construction method for the front-blocked jack, a steel strand in a beam is tensioned by the front-blocked jack. The novel quick tensioning construction method for the front-blocked jack is characterized by comprising the following steps: sequentially mounting working clips on steel strand bundles on the beam; fastening and positioning the working clips; then mounting limiting plates which are matched in diameter on the steel strands; mounting a lengthening sleeve, the front-blocked jack and tool clips; quickly tensioning; and returning oil and releasing. The novel quick tensioning construction method for the front-blocked jack combines the advantages of various domestic construction technologies based on front-blocked jacks and rear-blocked jacks, and is simple, safe, quick, efficient, environmentally friendly and energy-saving, greatly improves the production efficiency, reduces the construction cost, and reduces the construction period.

Description

technical field [0001] The invention relates to a fast tensioning construction method of a front clip jack, which is suitable for tensioning construction of various bridges, bridge prestressing engineering of traffic engineering such as railways, highways, and municipal administration, and prestressing structural engineering of construction industry. Background technique [0002] Most of the prestressed tensioning equipment used in transportation, construction and other engineering in my country is the traditional rear clamping jack, and the exposed steel strands are long, resulting in high cost and waste. At present, there are a few front clip jacks in my country: some anchor hole center distances are too large to adapt to existing working anchors, and the application fields are very limited; Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the invention provides a material-saving and high-efficiency front clamping jack rapid t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/12E01D21/00E01D101/28
Inventor 杨基好宋善岭徐加增贡蓝珊段胜伟
Owner 中铁十局集团第四工程有限公司
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