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Traction limiting device used for jacking counter-slope of bridge

A technology of limiting device and jacking, which is applied in the direction of lifting device, bridge, bridge maintenance, etc., can solve the problems of whether the beam gap adjustment is large, broken, and unable to better meet the bridge jacking project.

Active Publication Date: 2013-09-18
上海天演建筑物移位工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large deformation of the steel strand under the action of tension, or even breakage, the damage caused is extremely great.
In addition, during the jacking process, this method also has the disadvantages of large gap adjustment and poor adjustment accuracy, which cannot better meet the needs of bridge jacking projects.

Method used

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  • Traction limiting device used for jacking counter-slope of bridge
  • Traction limiting device used for jacking counter-slope of bridge
  • Traction limiting device used for jacking counter-slope of bridge

Examples

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Embodiment Construction

[0013] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Please combine Figure 1 ~ Figure 3 As shown, the pulling limiting device 10 for bridge reverse slope jacking of the present invention is located on both sides of the beam gap 1 of the bridge deck, including a pair of reaction force brackets 11, a top plate 12 and a pulling member 13, two The reaction force brackets 11 are respectively placed on the bridge deck on both sides of the beam gap 1, the right side reaction force bracket 11 is fixed to the bridge deck, while the left side reaction force bracket 11 is not fixed to the bridge deck; Between the brackets 11, it is fixed on the same side bridge surface (left side) of the reaction force support 11 that is not fixed with the bridge deck; The above-mentioned pulling part 13 includes a screw jack 131, a backing plate 132 and a pulling plate 133. The screw jack 131 and...

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PUM

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Abstract

The invention discloses a traction limiting device used for jacking a counter-slope of a bridge. The limiting device comprises counter-force brackets, a top plate and a traction component, wherein the counter-force brackets are respectively arranged on the two sides of a bridge seam; the top plate is arranged on one side of the bridge seam; and the traction component is used for tracting the two counter-force brackets. The limiting device acts on a counter-force bracket through a screw jack and reversely acts on the other counter-force bracket through the traction of a traction plate so as to control the size of the bridge seam, realize the reduction of the projection length of a bridge body in the horizontal direction when the slope of the bridge body changes, and meet the requirement on the counter-slope jacking engineering of the bridge.

Description

technical field [0001] The invention relates to a limit technology for bridge jacking, more specifically, to a pulling limit device for jacking up a bridge against a slope. Background technique [0002] In the process of reverse slope jacking of the bridge (i.e. lifting the bridge downhill to uphill or the original uphill jacking to downhill), when the slope and slope direction of each span beam body changes, the span beam body The horizontal projection length will produce a change that first increases and then shrinks or first shrinks and then increases. If the horizontal projection length of the multi-span girders changes, the horizontal projection length of the beams stacked together will vary greatly, which is extremely unfavorable for the jacking up of the entire bridge. Therefore, it is necessary to limit the tension between two adjacent beams. At present, the pulling limit used in the process of bridge reverse slope jacking generally adopts the limit method of steel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00B66F19/00
Inventor 林其荃张焱蓝戊己张任杰张志军顾远生
Owner 上海天演建筑物移位工程股份有限公司
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