Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Systematic Strengthening Method for Steel Plate Composite Continuous Beams

A composite beam and steel plate technology, applied in bridge reinforcement, bridge, bridge construction, etc., can solve the problems of insufficient bearing capacity of steel plate composite beams, cracking of bridge decks, etc., to eliminate cracking risks, prevent cracking, and resist the increase of torsional moment of inertia Effect

Inactive Publication Date: 2020-08-11
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a systematic reinforcement method for steel plate composite continuous girders, aiming to solve the problems of insufficient bearing capacity of existing steel plate composite girders and cracking of bridge decks in negative moment areas

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
  • Systematic Strengthening Method for Steel Plate Composite Continuous Beams
  • Systematic Strengthening Method for Steel Plate Composite Continuous Beams
  • Systematic Strengthening Method for Steel Plate Composite Continuous Beams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The system strengthening method for steel plate composite continuous beams according to the present invention will be described below with specific examples.

[0029] Such as Figure 1-10 The bridge shown in the figure adopts the form of double main girders of equal height, with 3×40m as a joint. The height of the original main girder is 2.2m. The specific reinforcement steps are as follows:

[0030] The first step is to set up a temporary support near the zero point of the composite beam bending moment, and install a jack on the temporary support. Specifically, under the premise of considering the construction needs, such as figure 1 As shown, a temporary support 2 is erected at 12m on the left and right sides of each middle pier 1, and the above four temporary supports 2 are all in the zero moment zone of the composite beam; after the temporary support 2 is erected, a jack is installed on it.

[0031] The second step, such as figure 2 As shown, the composite bea...

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 a systematic reinforcement method for steel plate composite continuous beams, which includes erecting a temporary support near the zero point of the composite beam's bending moment; secondly, carrying out the first jacking of the composite beam, and removing the support on the middle pier cover beam system, and chisel out the damaged concrete on the bridge deck in the negative moment area on the top of the middle pier; then, carry out the second jacking, hoist the prefabricated channel girder and install it on the cover beam of the middle pier, and place the upper flange of the prefabricated channel girder It is welded and connected with the lower flange of the I-beam; at the same time, longitudinal reinforcement and vertical reinforcement are implanted on the cover beam of the middle pier, and studs are welded on the inner side of the steel web of the I-beam; finally, concrete is poured, and the temporary support is removed to complete the construction. On the one hand, the invention can greatly improve the bearing capacity and anti-torsion distortion capacity of the steel plate composite continuous beam, and on the other hand, it can effectively solve the cracking problem of the bridge deck in the negative bending moment area of ​​the steel plate composite continuous beam, and achieve the improvement of the existing steel plate composite continuous beam system. Reinforcement purposes.

Description

technical field [0001] The invention relates to a reinforcement construction method for steel-concrete composite girder bridges, in particular to a systematic reinforcement method for steel plate composite continuous beams. Background technique [0002] Steel plate composite beams are widely used in modern bridge structures due to a series of advantages such as light weight, large spanning capacity, and good economy. With the development of the economy, the traffic volume and vehicle load continue to increase, and the functions of some existing steel plate composite continuous girder bridges continue to degrade, and their carrying capacity can no longer meet the needs of economic growth, and the existing bridges need to be reinforced; , because the bridge deck in the negative bending moment area of ​​the pier top of the steel plate continuous beam composite beam is inevitably in a state of tension, which can easily cause concrete cracking, resulting in corrosion of steel bar...

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 Patents(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 马志芳谢小山王为林杜玲霞袁媛闫玉萍陈彦恒随灿孙洪硕卢再光刘阳孙丽娟
Owner ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com