Method for pre-stressed reinforcing concrete compression member

A compression component and prestressing technology, which is applied in building construction, building maintenance, construction, etc., can solve the problems of force transmission plate thickness error, large cumulative error, and complicated construction technology, so as to reduce the stress level of the original structure and improve The total bearing capacity of the structure, the effect of eliminating strain hysteresis

Inactive Publication Date: 2003-03-12
杜旌 +2
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The second is the error caused by the thickness of the force transmission plate
[0019] The third is the difference caused by the compression amount a of the contact surface between the pressure angle steel and the concrete
However, if the strut strain lags too much, it will still cause the concrete part to fail early and weaken the reinforcement effect.
[0028] 2. There will be three types of errors that may occur at the same time when prestressing the compress

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 pre-stressed reinforcing concrete compression member
  • Method for pre-stressed reinforcing concrete compression member
  • Method for pre-stressed reinforcing concrete compression member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0083] Such as Image 6 , Figure 7 , Figure 8, Figure 9, Figure 10, and Figure 11, the method of prestressing concrete compression members is divided into five steps: 1) Prestress calculation, 2) Jack torsion calculation, 3) Outsourcing strut angle steel and jack installation, 4) prestressing, 5) fixing and jack removal. 1), prestress calculation

[0084] a. Axial Force Calculation

[0085] (1) Determine the full axial compressive bearing capacity N to be borne after reinforcement;

[0086] (2) According to the current "Code for Design of Concrete Structures" (GBJ10-89), calculate the axial compressive bearing capacity of the original reinforced concrete N 0 :

[0087] N 0 =(A co f co +A' so f' yo ) (4.1) where n 0 ——the axial compressive bearing capacity of the original column;

[0088] ——coefficient of stability of original column;

[0089] A co - the cross-sectional area of ​​the original column;

[0090] f co — design value of concrete compressive s...

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

A method for reinforcing the concrete member by prestress includes such steps as calculating prestress and the torsion force of jack, installing supporting angle steel and jack, applying prestress, fixing, and detaching jack. Its advantages are high reinforcing effect on increasing total bearing power, high correctness of prestress, and easy control.

Description

technical field [0001] The invention relates to a method for strengthening concrete compression components, in particular to a method for prestressing concrete compression components. Background technique [0002] Reinforced concrete structure is the most widely used structure in engineering construction all over the world, and its development and application has a history of more than 100 years. However, during the use of concrete structures, concrete members will continue to be damaged and aged over time, and their bearing capacity, stiffness, ductility and stability will continue to decline, so the branch of concrete structure reinforcement emerged in the 1960s. [0003] At present, there are many reinforcement methods commonly used in actual engineering, such as enlarging section method, replacement method, prestressing method, increasing fulcrum method, outsourcing steel reinforcement method, bonded steel reinforcement and viscose fiber cloth method, etc. 1. Stress cha...

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): E04B1/20E04G23/02E04G23/04
Inventor 杜旌李冠峰梁爱琴王佶符晶华宋建学陈应波袁军武永炎代红钟春城魏勇韩玲范小春曾铁梅范剑锋
Owner 杜旌
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