Corrosion fatigue resistant light aggregate concrete beam
A lightweight aggregate concrete, anti-corrosion technology, applied in the direction of joists, girders, truss beams, etc., can solve the problems of difficult service life and achieve good seismic performance, good ductility, and improved durability
Inactive Publication Date: 2007-11-28
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology
In addition, the development of the economy makes the construction structures or structures overloaded, and the expected service life is difficult to achieve.
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[0017] As shown in the figure, Figures 5 and 6 show an example of a reinforced FRP-reinforced lightweight aggregate concrete beam. The upper part is equipped with two steel bars 4 with a diameter of 12mm, the lower part is equipped with three FRP bars 1 with a diameter of 20mm, and the middle is equidistantly equipped with steel bars 3 with a diameter of 6mm. The inside of the beam is light aggregate concrete 2, and the total length of the beam is 3000mm , the width is 200mm, and the height is 300mm. The longitudinal bars and stirrups arranged on the beam should be determined according to the specific design situation, so the specific positions of the longitudinal bars and stirrups are not given in the figure.
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Abstract
The invention relates to a light aggregate concrete beam with corrosion and fatigue resistance, belonging to a building component. The light aggregate concrete beam of fiber reinforcement plastic rebar comprises fiber reinforcement plastic rebar, reinforcing steel bar and light aggregate concrete layer covering the fiber reinforcement plastic rebar. In the beam the fiber reinforcement plastic rebar is parallel with the reinforcing steel bar; the reinforcing steel bar is vertical to the fiber reinforcement plastic rebar and other reinforcing steel bars; and it is welt with the fiber reinforcement plastic rebar and other reinforcing steel bars together. The invention comprises FRP rebar and light aggregate concrete covering the FRP rebar. It is provided with improved structure durability, good ductility, light weight, impact resistance and good anti-fatigue performance, good anti-vibration and corrosion resistance so on.
Description
technical field [0001] The invention relates to a building component, in particular to an FRP reinforced lightweight aggregate concrete beam. Background technique [0002] For a long time, there have been structural durability problems in reinforced concrete structures caused by steel corrosion. Corrosion of steel bars will seriously affect the normal function of the structure and greatly reduce the service life of the structure. Many marine concrete structures such as floating structures, offshore platforms, offshore projects, bridges, etc. are usually subjected to a large number of fatigue cycles, and the fatigue load is an important factor in determining the service life of the structure besides corrosion, because the fatigue load accelerates cracking and makes it easy for chlorides to enter , thereby accelerating the deterioration process of concrete in a corrosive environment. There are many factors affecting corrosion fatigue, and the factors that affect materials or...
Claims
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IPC IPC(8): E04C3/20
Inventor 李帼昌
Owner SHENYANG JIANZHU UNIVERSITY