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Method for improving straight shear bearing force of reinforced concrete member

A reinforced concrete, bearing capacity technology, applied in building construction, building maintenance, construction, etc., can solve the problem of no direct shear reinforcement found

Inactive Publication Date: 2014-11-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reinforcement method of pasting fiber composite materials has the characteristics of light weight and high strength, simple construction, curved surface or turning paste, and low price. No reports were found as direct shear reinforcement

Method used

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  • Method for improving straight shear bearing force of reinforced concrete member
  • Method for improving straight shear bearing force of reinforced concrete member
  • Method for improving straight shear bearing force of reinforced concrete member

Examples

Experimental program
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Embodiment

[0088] Such as Figure 9 , Figure 10 and Figure 11 As shown, the carbon fiber composite material is laid layer by layer on the outer surface of the pre-reinforced part of the reinforced concrete member. Under the action of load F, the carbon fiber composite stretches to both sides of the direct shear plane 4 (ie Figure 9 The direction X) is indicated by the double arrow shown. The length b of the carbon fiber composite varies with the specific parameters of the reinforced concrete member. In this embodiment, the length b is 400mm as an example for illustration. When pasting, the carbon fiber composite material is vertically pasted on the reinforcement part along the direction perpendicular to the potential direct shear surface 4, and the direct shear surface 4 is guaranteed to bisect the piece of carbon fiber composite material in the length direction, that is, the length of the reinforcement part is direct shear Surfaces 4 extend 200mm in the longitudinal direction, so...

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Abstract

The invention provides a method for improving straight shear bearing force of a reinforced concrete member. The method comprises the following steps that firstly, the length and reinforcing layer number of each carbon fiber composite material are determined according to the physical parameters of the reinforced concrete member, and then the carbon fiber composite materials are laid on the surface of the reinforced concrete member in the direction perpendicular to the straight shear face according to the length and the reinforcing layer number. The use number of the carbon fiber composite materials is precisely determined, the use number of the carbon fiber composite materials can be controlled scientifically and reasonably, and the straight shear performance of the reinforced concrete member is improved to the greatest extent with the lowest consumption of the carbon fiber composite materials.

Description

technical field [0001] The invention belongs to the technical field of concrete structure reinforcement, and relates to a method for improving the direct shear bearing capacity of components. Background technique [0002] Reinforced concrete structure is currently the most widely used form of structure. There are many basic failure forms of concrete members, among which direct shear failure is a relatively common form. Generally speaking, concrete members are prone to direct shear failure in the following two places: one is at the small cracks in the section or the material mutation (such as the interface between new and old concrete); the other is at the section that bears large shear force transmission . The direct shear bearing capacity of concrete members may be insufficient due to the improvement of housing functions and other reasons. At this time, it is necessary to strengthen the direct shear performance of concrete members to increase the bearing capacity. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02
Inventor 林峰董羽
Owner TONGJI UNIV
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