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Arch bridge suspender tensioning device

A technology of tensioning device and boom, which is applied in the direction of arch bridges, bridges, bridge forms, etc., can solve the problems of slow tensioning progress, small operating space, deformation of the lower anchor box structure, etc., and achieve fast tensioning progress and space for tensioning Great effect of improving construction efficiency

Active Publication Date: 2018-02-13
中铁十七局集团第三工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This tensioning method has a small operating space and strict requirements on the height of the jack, which is likely to cause deformation of the anchor box structure, and the tensioning progress is slow

Method used

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  • Arch bridge suspender tensioning device
  • Arch bridge suspender tensioning device
  • Arch bridge suspender tensioning device

Examples

Experimental program
Comparison scheme
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Embodiment approach

[0025] As a possible embodiment, it also includes a lower anchor box 3, and the limit mechanism includes at least two pull rods 5; the pull rods 5 pass through the bracket 2 and the lower anchor box 3, and the two ends of the pull rods are provided with an upper limit structure and a lower limit structure .

[0026] Preferably, the upper limit structure is the first nut 8, and the lower limit structure is the second nut 9, which are all threaded with the pull rod 5; 5 top; the two sides of the lower anchor box 3 are provided with ear seats, and the lower part of the pull rod 5 passes through the ear seats of the lower anchor box 3 and is clamped by the second nut 9 . The structure of lower anchor box 3 is shown in Figures 3 to 5 .

[0027] There are two jacks 4, pull rods 5, first nuts 8 and second nuts 9, which are symmetrically arranged on both sides of the suspension rod 1 respectively. This scheme is simple in structure and convenient for construction.

[0028] As a p...

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PUM

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Abstract

The invention discloses an arch bridge suspender tensioning device which comprises a support, jacks and a limiting mechanism. A suspender is sleeved with the support, the bottom end of the suspender abuts against a suspender base, the jacks are arranged between the limiting mechanism and the support and used for tensioning the suspender, and the support, the jacks and the limiting mechanism are all arranged over a lower arch bridge anchor box. According to the arch bridge suspender tensioning device, the tensioning space is large, no requirement on the height of the jacks exists, lower anchor box deformation cannot be caused, operation is easy, the tensioning speed is high, and the construction efficiency is improved; the support is detachable, high in strength and not prone to be deformed.

Description

technical field [0001] The invention relates to the technical field of arch bridge construction. Background technique [0002] In order not to damage the road and affect the safety and use of local roads, the bridges of high-speed railways are generally equipped with basket arches at positions such as inclined-span wide roads. , K brace, boom, and lower anchor box. After the boom is installed, it needs to be stretched. The traditional tensioning method is: the lower part of the boom passes through the lower anchor box, and a steel pier is installed at the bottom of the boom. A jack is installed between the pier and the lower anchor box, and the suspender moves downward through multiple liftings of the jack, and the nut is tightened every time the jack is lifted until the tensile force reaches the design value, and the suspender is tightened to complete the tension. This tensioning method has a small operating space and strict requirements on the height of the jack, which ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D4/00
CPCE01D4/00E01D21/00
Inventor 乐锋唐波涛王立东魏文柱王晓光周永明曹会芹
Owner 中铁十七局集团第三工程有限公司