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I-beam integral tension installation method

A technology of overall tensioning and installation method, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of the jack and the steel strand are not easy to cooperate, the jack is heavy, the spreader is easy to shake, etc., to reduce the jack drop. The risk of falling, easy installation, and the effect of improving stability

Active Publication Date: 2021-07-20
CHINA ROAD & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When installing a jack, it is usually necessary to use a spreader to lift the jack to a position equivalent to the steel strand. Because the jack is very heavy and the spreader is easy to shake, it is not easy to complete the cooperation between the jack and the steel strand

Method used

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  • I-beam integral tension installation method
  • I-beam integral tension installation method
  • I-beam integral tension installation method

Examples

Experimental program
Comparison scheme
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Embodiment

[0047] Such as Figure 1~5 As shown, a kind of I-beam integral tension installation method includes:

[0048] Step 1, designing a special trolley for tensioning, the special trolley for tensioning includes:

[0049] The support includes a base plate 1, a column 2, a telescopic support mechanism 6 and a support platform 4, bottom wheels are arranged below the base plate 1 so that the support can move, the column 2 is vertically arranged on the base plate 1, and the telescopic support Mechanism 6 is arranged on the base plate 1 and the top supports the support platform 4, the top surface of the base plate 1 and the bottom of the support platform 4 are respectively provided with an upper track and a lower track, and the top and bottom ends of the telescopic support mechanism 6 are connected with the upper track and the bottom respectively. The lower track cooperates so that the telescopic support mechanism 6 can move along the track and then adjust the support position. Swing u...

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Abstract

The invention discloses an I-shaped beam overall tensioning installation method, comprising: step 1, designing a special tensioning trolley; step 2, placing a jack on the tensioning special trolley, and then moving the tensioning special trolley to the required The position of the tension; step 3, adjust the front support mechanism of the steel strand to concentrate the steel strand rope, push the jack forward to make the steel strand pass through the jack and complete the installation of the jack; step 4, push the rear support mechanism of the steel strand to use the support Push the tool anchor plate and the tool clip into the corresponding position to complete the installation of the tool anchor plate and the tool clip to complete the installation of the overall tension of the I-beam. The invention utilizes a special trolley for tensioning to load the heavy jack, which is convenient for the operation of the jack and the steel strand, and solves the installation difficulties in the traditional technology of using the spreader to mobilize the jack and the steel strand, and the jack is not easy to fit the steel strand. Alignment fit, jacks are easy to fall from the steel strands to cause accidents technical problems.

Description

technical field [0001] The invention relates to the technical field of construction equipment, more specifically, the invention relates to an I-shaped beam overall tension installation method. Background technique [0002] I-beams are widely used in the field of road and bridge construction. Prefabricating the beams and then transporting them to the construction site for installation can significantly improve the construction speed and ensure the quality of the project. [0003] Prestressed tension is a very important part of the I-beam prefabrication process. Applying pre-tension stress can improve the bending resistance and stiffness of the I-beam, reduce vibration and elastic deformation, and increase durability. [0004] The installation of tension usually includes installing the sleeves and other parts used to penetrate the prestressed tendons after the binding of the reinforced members, and then installing the formwork and pouring concrete. When the concrete reaches th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D2/02
CPCE01D2/02E01D21/00
Inventor 李刚李志强杨小刚周马生
Owner CHINA ROAD & BRIDGE
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