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Integral tensioning installation method for I-shaped beam

A technology of overall tensioning and installation method, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc. It can solve problems such as heavy jacks, easy shaking of spreaders, and difficult cooperation between jacks and steel strands, etc., to reduce falls risk, prevent sagging, and improve stability

Active Publication Date: 2020-09-22
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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  • Integral tensioning installation method for I-shaped beam
  • Integral tensioning installation method for I-shaped beam
  • Integral tensioning installation method for I-shaped beam

Examples

Experimental program
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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 integral tensioning installation method for an I-shaped beam. The integral tensioning installation method comprises the steps of: 1, designing a special tensioning trolley;2, placing a jack on the special tensioning trolley, and then moving the special tensioning trolley to a position needing to be tensioned; 3, adjusting a steel strand front supporting mechanism to enable the steel strand to be meshed and concentrated, pushing the jack to move forwards, enabling the steel strand to penetrate through the jack, and finishing installation of the jack; and 4, pushing asteel strand rear supporting mechanism to push a tool anchor plate and a tool clamping piece into corresponding positions by a supporting plate to complete installation of the tool anchor plate and the tool clamping piece, thus completing installation of overall tensioning of the I-shaped beam. The special tensioning trolley is used for loading the heavy jack, the jack is conveniently operated tobe matched with the steel strand, and the technical problems that in the prior art, a lifting appliance is used for transferring the jack to be matched with the steel strand for installation, installation is difficult, the jack is not easily aligned and matched with the steel strand, and the jack is prone to falling off from the steel strand to cause accidents are solved.

Description

technical field [0001] The invention relates to the technical field of construction, and more specifically, the invention relates to a method for integrally tensioning and installing an I-shaped beam. 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 re...

Claims

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Application Information

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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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