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A self-falling adjustable box girder installation method

An installation method and adjustable technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of long time and difficult observation of positioning points.

Active Publication Date: 2020-10-23
CCCC SHEC FOURTH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it uses a four-point positioning method to achieve accurate positioning, the positioning points are not easy to observe, and it still needs to adjust the positioning many times, which takes a long time

Method used

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  • A self-falling adjustable box girder installation method
  • A self-falling adjustable box girder installation method

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Embodiment Construction

[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0025] Such as figure 1 and figure 2 As shown, a self-falling adjustable box girder installation method includes the following steps:

[0026] Step 1) Install a pair of fixing devices 4 at the front and rear end faces of the box girder 11, and fix a fixing screw 7 perpendicular to the outer end faces of the fixing device 4, and the fixing screw 7 is threaded with a horizontal adjustment nut 8;

[0027] Step 2) Install the construction guardrail 1 at a predetermined position on the pier body 12. There are two construction guardrails 1 located at the front and rear ends of the pier body 12 respectively. The construction guardrail 1 is provided with a horizontal guide rail 5, and the horizontal guide rail 5 and the The end faces of the box girder ...

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Abstract

The invention discloses a self-falling adjustable box girder mounting method, and relates to the technical field of road construction. The self-falling adjustable box girder mounting method comprisesthe steps of mounting of a fixing device, mounting of construction guardrails and a guide frame, hoisting of a box girder, precise adjusting of the position of the box girder and the like. The box girder can be mounted and positioned only by precise adjusting in one direction, multi-time multi-directional adjustment is not needed, secondly, because of arrangement of the guide frame, the influenceof the wind speed on hoisting of the box girder is reduced, the construction guardrails are arranged at the two ends of a pier body, and thus station construction of construction personnel is also facilitated.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a method for installing a self-falling adjustable box girder with fast positioning and reduced repair time. Background technique [0002] The installation of segmental box girders is greatly affected by the weather, especially when installing the pier top section on the pier body. On the one hand, the space for personnel to operate is limited; To make it stable, even if it barely falls, the position needs to be adjusted again, and the operation is complicated. . [0003] Chinese patent publication number is that CN100523383C discloses a kind of installation method of viaduct section box girder. The installation method of the viaduct section box girder is characterized in that a mobile crane is used to vertically lift the box girder section of the previous span in front of the front pier, and the vertical movement is carried out by using a longitudinal moving trolley a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D2/04
CPCE01D2/04E01D21/00
Inventor 万金发杨康徐权王伟王永全张弟华
Owner CCCC SHEC FOURTH ENG
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