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Intelligent tensioning equipment for the entire bundle of cable stays

An intelligent tensioning and cable-staying technology, applied in bridge construction, erection/assembly of bridges, bridge parts, etc., can solve problems such as no longer practical, and achieve the effect of enhancing safety and reducing labor intensity

Active Publication Date: 2016-12-28
CHONGQING CHANGJIANG PRESTRESS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this construction method is only suitable for the construction of cable-stayed bridges with small cable body diameter, light anchorage and tension ends on the tower, and it is no longer practical for cable-stayed bridges with parallel steel strand cables.

Method used

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  • Intelligent tensioning equipment for the entire bundle of cable stays
  • Intelligent tensioning equipment for the entire bundle of cable stays
  • Intelligent tensioning equipment for the entire bundle of cable stays

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Such as figure 1 and figure 2 As shown, the whole bunch of cable-stayed intelligent tensioning equipment includes a tensioning mechanism: four tensioning jacks 31 are fixed on the same tensioning backing plate 32 to form a “jack backing plate” combination, and the jacks 31 are used as jacking device, four jacks 31 are stressed simultaneously to reach the super large tension force required for tension construction and cable adjustment. A large hole is arranged in the middle of the tension backing plate 32 for threading the anchor cable and the anchor head through and the tension nut 33 . The anchor head is fixed on the support tube 34 by bolts, the inside of the support tube 34 is used for parallel steel strands to pass through, and the external car has external threads and the tension nut 33 is screwed together. The internal thread of the tension nut 33 is screwed together with the external thread of the anchor head to bear the tension between the jack 31 and the anc...

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PUM

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Abstract

The invention relates to an intelligent tensioning device for the whole bundle of cable stays, comprising: a tensioning backing plate, an anchor backing plate, a jacking device, a support cylinder and a tensioning nut; the jacking device is connected to the tensioning backing plate Between the anchor backing plate, the tension nut is located outside the tension backing plate, and the tension nut is screwed to the support cylinder. In the intelligent tensioning equipment for the whole bundle of cable stays provided by the present invention, all actions can be automatically controlled through electrical and hydraulic principles, and the work that cannot be completed by manpower can be realized through mechanical actions, which reduces the labor intensity of people and enhances the safety of construction personnel. Assure.

Description

technical field [0001] The invention relates to an intelligent tensioning device for whole bundles of cable stays. Background technique [0002] At present, in the field of cable-stayed bridge design, the stay cables tend to adopt parallel steel strand cables. The cable body is composed of multiple unbonded high-strength parallel galvanized steel strands, and the outer layer is protected by a double-layer synchronous hot-extruded double-helix HDPE sheath tube. The steel strand adopts single threading, single tension, single test inspection, and single steel strand can be adjusted and replaced. However, in actual engineering construction, according to the requirements of the design unit and the construction monitoring unit, it is often necessary to adjust the cable force twice or more to achieve the designed bridge alignment. If the second rope adjustment adopts a single tension method, then there will be common problems that the clips of the first tension cannot be taken o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/16E01D21/00
Inventor 陈春林陈科良陈炜锋赵轶才李闯罗杰王南川杨家玉田稀林
Owner CHONGQING CHANGJIANG PRESTRESS