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Method for improving anti-earthquake ductility of FRP tendon concrete frame structure

A frame structure, concrete technology, applied in the direction of earthquake resistance, building components, building structure, etc., to achieve the effect of improving seismic ductility, increasing curvature ductility, and overcoming brittle failure

Inactive Publication Date: 2011-05-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for improving the seismic ductility of the FRP reinforced concrete frame structure for the problems existing in the existing FRP reinforced concrete frame structure, so as to meet the deformation capacity of the FRP reinforced concrete frame structure under the earthquake load

Method used

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  • Method for improving anti-earthquake ductility of FRP tendon concrete frame structure
  • Method for improving anti-earthquake ductility of FRP tendon concrete frame structure
  • Method for improving anti-earthquake ductility of FRP tendon concrete frame structure

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Embodiment 1

[0021] Embodiment one: see figure 1 , figure 2 , the method for improving the ductility of the FRP reinforced concrete frame structure is as follows: according to the cross-sectional size of the FRP reinforced concrete frame structure 1 and the quantity and diameter of the FRP tendon 2, the components 3 required in this embodiment are made, and the components 3 Drill the corresponding holes. When installing the FRP bar 2 in the FRP bar concrete frame structure, in figure 1 Install the fixed components 3 at the required component positions, and then pour concrete to complete the construction of the FRP-reinforced concrete frame structure. The specific operation steps are as follows:

[0022] (1) According to the component cross-sectional size of FRP reinforced concrete frame structure 1 and the quantity and diameter of FRP reinforced concrete frame structure 2, make components 3 (integral type);

[0023] (2) drilling a hole perpendicular to the surface in the component 3; ...

Embodiment 2

[0026] Embodiment two: see figure 2 , this embodiment is basically the same as the above-mentioned embodiment, the difference is that the components 3 are separated, that is, the components 3 can be installed on each or every few FRP ribs, and the components 3 can be installed in combination After that, the entire cross-sectional shape of the FRP reinforced concrete frame structural member 1 can still be assembled.

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Abstract

The invention relates to a method for improving anti-earthquake ductility of FRP tendon concrete frame structure, comprising the step of building an FRP tendon concrete frame structure. When building the type of frame structure, a component with effective compressive strength and formability is installed in a zone which can produce larger bending moment under the action of earthquake loading; compression set of the component improves the formability of a construction member concrete compressive zone in the FRP tendon concrete frame structure so as to improve the anti-earthquake ductility of the frame structure. Under the condition of constant FRP tendon formability, the invention effectively increases the deformation of the concrete compressive zone and the curvature ductility of a cross section, overcomes the defect of the brittle failure of the FRP tendon concrete construction member and effectively improves the anti-earthquake ductility thereof.

Description

technical field [0001] The invention relates to a method for improving the anti-seismic ductility of an FRP-reinforced concrete frame structure, which is adopted in the construction of the FRP-reinforced concrete frame structure to improve the anti-seismic ductility of the FRP-reinforced concrete frame structure. Background technique [0002] Steel bar corrosion has a very serious impact on the durability of reinforced concrete structures, which will reduce the normal service life of the structure and increase the maintenance cost of the structure. Fiber-Reinforced Plastics (FRP) bars are a high-performance composite material , has the advantages of light weight, high strength, high chemical stability (acid, alkali, salt and oxide resistance, etc.), electromagnetic neutrality, etc. The long-term comprehensive benefits of applying to concrete structures are better than steel bars, and have good application prospects. However, because FRP bars are brittle materials, their defo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04B1/20E04B1/16
Inventor 刘涛张智梅冯伟张晏戌公孙铭褚卫丰许文前
Owner SHANGHAI UNIV
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