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Intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and manufacturing method thereof

A composite structure and concrete technology, applied to truss structures, joists, girders, etc., can solve the problems of prestress bond loss, prestress loss monitoring difficulties, etc., achieve small prestress loss, reduce construction costs, equipment and Simple operation effect

Active Publication Date: 2013-01-30
SOUTHEAST UNIV
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Problems solved by technology

[0009] Technical problem: The purpose of this invention is to provide an intelligent FRP-concrete composite structure and manufacturing method, in order to improve the utilization rate of FRP composite materials, the bonding effect between FRP and concrete structures, and make it highly durable and sustainable and intelligence; solve the problems of prestressed concrete structure prestressed bond loss and prestressed loss monitoring difficulties

Method used

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  • Intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and manufacturing method thereof
  • Intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and manufacturing method thereof
  • Intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and manufacturing method thereof

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Embodiment

[0094] For the cross-sectional dimensions and reinforcement of the reinforced concrete core used in this test, see Figure 12 , 13 , the section size is width×height=150×300mm; the length is 3100mm, and the calculated span is 2700; the concrete is C30 grade, and the bottom of the test beam is a row of tensile steel bars The top erecting steel bar is The stirrup adopts Ф8 dense area interval of 90mm, non-encrypted area interval of 180mm, and the thickness of the concrete protective layer is 25mm. The intelligent FRP layer bonding, measuring electrode installation and four-point bending test of the intelligent FRP-concrete composite structure are as follows: Figure 14 and 15 As shown, a total of 4 measuring and measuring electrodes are installed, which can monitor the intelligent FRP-concrete composite structure in different regions and perform damage location.

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Abstract

The invention discloses an intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and a manufacturing method of the intelligent FRP-concrete composite structure. The intelligent composite structure comprises an intelligent FRP layer, a reinforced concrete core and an anchoring device, wherein the intelligent FRP layer is formed by carbon fibers or carbon fiber mixed with other fibers and impregnated by resin, and in the composite structure, the intelligent FRP layer both serves as structural material and plays a sensing function. The intelligent FRP layer is wrapped on the stressed side of the reinforced concrete core, certain prestress is applied on the intelligent FRP layer to better play the high strength property of the FRP, and the intelligent FRP layer is connected with the reinforced concrete core through resin adhesion and mechanical connection of anchorage device. The intelligent FRP-concrete composite structure not only has high carrying capacity, self sensing function, excellent corrosion resistance and high durability, but also has strong designability of performance and structure.

Description

technical field [0001] The invention is an intelligent fiber reinforced resin composite (FRP) / concrete composite structure based on carbon fiber distributed sensing and its application in civil engineering, belonging to the technical fields of intelligent materials and structures and civil engineering. Background technique [0002] Fiber-reinforced resin composite (FRP) has good mechanical properties, its tensile strength is more than 5 times that of ordinary carbon steel, and its density is only 1 / 3 to 1 / 5 of steel, and it has good corrosion resistance / durability, Since its development, the research and application of its various properties have attracted much attention. Carbon fiber reinforced composite material (CFRP) is a very important class of FRP composite materials. It has superior mechanical properties and physical and chemical properties than ordinary fiber materials. About 10 times that of low-carbon steel, it has higher fatigue resistance than ordinary metal mat...

Claims

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Application Information

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IPC IPC(8): E04C3/26
Inventor 杨才千焦友进王红涛吴智深
Owner SOUTHEAST UNIV
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