Over tensioning and tension-releasing structure for stay cable cable-force

A cable-stayed cable and tension pedestal technology, used in cable-stayed bridges, erecting/assembling bridges, bridge forms, etc. Difficulty and other problems, to achieve good economic benefits, ensure service life, and prevent the effect of pinching the steel strand

Pending Publication Date: 2018-10-16
中铁贵州旅游文化发展有限公司 +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional front-clip single-drawn roof needs to realize the overtension and release adjustment of the cable stay, which is difficult to operate and has low economic benefits, and the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Over tensioning and tension-releasing structure for stay cable cable-force
  • Over tensioning and tension-releasing structure for stay cable cable-force
  • Over tensioning and tension-releasing structure for stay cable cable-force

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] A stay-cable force over-tensioning structure, which comprises a guide tube 1, a partition wall tooth block concrete 2, an anchor tube 3, a guide tube anchor plate 4, a working anchor 5, and an adjusting nut 15. The guide tube 1 is pre-embedded in the box girder In the partition wall tooth block concrete 2, the anchor tube 3 is set in the guide tube 1. One end of the guide tube 1 is installed with a guide tube anchor plate 4, an adjusting nut 15 and a working anchor 5, and the partition wall tooth block concrete 2 is provided with an adjusting nut 15 one A steel brace tensioning stand 7 is fixed on the side, the other end of the steel brace tensioning stand 7 is connected to a jack 8, and the other end of the jack 8 is connected to a tool anchor 9; the anti-loosening device is connected by a connecting bolt 6 and a flange 19 to the anchor cylinder 3 for adjustment The hole 18 is used for the adjustment nut to rotate up and down; the guide pipe 1 is welded, and the welding ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an over tensioning and tension-releasing structure for stay cable cable-force. The over tensioning and tension-releasing structure for the stay cable cable-forc is characterized in that a guiding pipe (1) is pre-embedded in partition wall saw-tooth block concrete (2) in a box girder, and an anchoring cylinder (3) extends into the guiding pipe (1) during the tensioning construction of the segment stay cable, and a guiding pipe anchoring plate (4), a work anchor (5) and an adjusting nut (15) are slightly attached by the tensioning force of the stay cable without gaps, before the over tensioning of the stay cable, whether an anti-loosening device connecting bolt (6) is tightened or not is confirmed. During the over tensioning and tension-releasing of the stay cable, afastener-type bracket platform is erected right below the partition wall saw-tooth block concrete (2) in the box girder, and a steel supporting tension platform seat (7) is arranged and fixed above anoperation platform by a chain block. After the steel supporting tension platform seat (7) is installed, a cross-core jack (8), a tool anchor (9) and an oil pump are installed. The cross-core type jack (8) is hoisted and installed by an auxiliary hanging bracket and a chain block to enable the jack (8) to directly face to the steel supporting tension platform seat (7).

Description

technical field [0001] The invention relates to an overtension and release structure of a cable-stayed cable. Background technique [0002] The Gangou Bridge on China Railway Avenue is a "Lusheng" shaped cable-stayed bridge. In order to better optimize the line shape and the stress on the upper and lower edges during the construction stage of the bridge, and improve the service life of the bridge, before the cable-stayed bridge is closed, the design requires that each cable-stayed cable The tension of the single roof is temporarily stretched to 0.46fpk of the cable force of the cable stay, and the overtension release structure is used to overtension the cable force of the cable stay to 0.65fpk before the closure of the bridge. After the conversion of the prestressed system of the whole bridge is completed, the The cable force of the stay cables is over-tensioned to 0.72fpk, and then the force of the stay cables is released to 0.56fpk by using the over-tension release structu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E01D11/04E01D21/00
CPCE01D11/04E01D21/00
Inventor 张海彬薛雄张鸿旗黄宇黄万龙张小明丰素香谭红飞陈旭
Owner 中铁贵州旅游文化发展有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap