Method for sticking carbon fiber plates through prestress

A technology for pasting carbon fiber and carbon fiber sheets, which is used in bridge maintenance, bridge erection/assembly, and bridge reinforcement. Small headroom, reduced deflection effect

Inactive Publication Date: 2013-09-18
GEOTECHN TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to factors such as long service life, environmental deterioration, design defects or improper use and maintenance, a large number of cracks will occur after the deflection of the bridge girder slab, which will not only greatly shorten the service life of the bridge, but also seriously threaten the safety of vehicles and pedestrians.

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
  • Method for sticking carbon fiber plates through prestress
  • Method for sticking carbon fiber plates through prestress
  • Method for sticking carbon fiber plates through prestress

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

[0023] Carbon fiber sheet has excellent performance, so it is widely used in the reinforcement and restoration of bridges, buildings, tunnels, culverts and other various concrete structures. The reinforcement method of sticking carbon fiber sheets to the surface of the structure or component to form a composite body is especially suitable for the repair project of beam bridges (it is the preferred construction method when the construction height is limited), not only the construction is relatively simple, but also the reinforcement effect is remarkable , can greatly improve the bearing capacity and durability of the girder bridge.

[0024] Such as figure 1 As shown, the existing bridge generally includes several pillars 4, a cover beam 5 fixed on the top of the pillar, and several beam plates 1 succes...

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 relates to a method for sticking carbon fiber plates through prestress. The method, provided by the invention, can eliminate the bridge deflection and increase the bridge load, and meanwhile, has the characteristics of simplicity and convenience in construction, lower cost, and no influence on the structure and the shape. The technical scheme is that the method comprises the following steps: 1) a plurality of groups of jacking units are placed below beam plates, and in addition, all jacks are started to jack the beam plates up for a certain height, so that the bottom surfaces of the beam plates are positioned on the same planes; 2) the bottoms of the beam plates are repaired; 3) a plurality of rows of carbon fiber plates are fixed at the bottoms of the beam plates, and the carbon fiber plates are stuck to the bottoms of the beam plates through primer; 4) after the primer is dried, one carbon fiber plate is fixed on each carbon fiber plate through the primer, and the sticking is carried out repeatedly for a couple of times; and 5) after the primer is fully dried, all the jacking units descend and the beam plate is back to the original position to produce prestress capable of reducing beam plate deflection after the carbon fiber plates are tensioned.

Description

technical field [0001] The invention relates to a repair method for bridges, in particular to a reinforcement method for bridge girder slabs. Background technique [0002] Affected by factors such as long service life, environmental deterioration, design defects or improper use and maintenance, a large number of cracks will occur after the bridge girder slab deflects, which will not only greatly shorten the service life of the bridge, but also seriously threaten the safety of vehicles and pedestrians. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned background technology and provide a method for prestressing and pasting carbon fiber sheets. This method should be able to eliminate the bridge deflection and increase the bridge load. Shape characteristics. [0004] The technical solution of the present invention is: a method for prestressing and pasting carbon fiber sheets, which is carried out acc...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
Inventor 殷树芳
Owner GEOTECHN TECH
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