Beam tester of bonding strength of fibre reinforced composite sheet and concrete
A fiber-reinforced composite and bonding strength technology, applied in the direction of measuring devices, using mechanical devices, analyzing materials, etc., can solve the problem of the difficulty in accurately simulating the peeling and failure process of FRP and concrete, the slipping of the tensile end of the FRP sheet, and the difficulty Set the FRP sheet offset and other issues to achieve the effect of solving the center of gravity offset of the test piece, the test operation is simple and easy, and the design principle is clear
Inactive Publication Date: 2010-08-18
SOUTHEAST UNIV
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Problems solved by technology
It is difficult to accurately simulate the fracture mode of FRP and concrete in the mixed mode fracture mode and the peeling failure process under cyclic loading by traditional single shear or double shear test.
The main reasons are: (1) When simulating the peeling failure of FRP and concrete under the mixed mode, it is difficult to set the offset of the FRP sheet in the single shear or double s
Method used
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[0028] The present invention will be further described below in conjunction with accompanying drawing:
[0029]A beam-type test device for the bond strength between fiber-reinforced composite sheets and concrete, comprising: a front pressure bar height adjuster, a rear pressure bar height adjuster, a pressure bar 11, a distribution beam 8, a roller support 23 and a steel beam 2. The distribution beam 8 is located above the steel beam 2, the roller support 23 is located below the steel beam 2, the front pressure bar height adjuster and the rear pressure bar height adjuster are located on the side of the steel beam 2, and are connected to the steel beam 2 There are front and rear composite components, the front and rear composite components are hinged parts 3, hinged holes 13 are provided on the hinged parts 3, hinged rods 14 are arranged in the hinged holes 13, front pressure bar height adjusters and rear The pressure bar height adjuster adopts a height adjuster 7, and the heig...
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The invention relates to a beam tester of the bonding strength of fibre reinforced composite sheet and concrete. The tester comprises a front compression bar altitude controller, a back compression bar altitude controller, a compression bar, a distributive girder and a steel girder, wherein the distributive girder is arranged above the steel girder, the front and back compression bar altitude controllers are arranged on the sides of the steel girder, the steel girder is connected with a pair of hinge parts, each hinge part is provided with an hinge hole, the inside of the hinge hole is provided with a hinge bar; the front and back compression bar altitude controllers adopt the altitude controllers, each altitude controller contains a base provided with connection holes and a compression bar hole; the inside of each connection hole is provided with a connection bolt, the base is also provided with an upper support and a lower support, a compression bolt is arranged in the upper support, an adjusting bolt is arranged in the lower support; the compression bar hole is arranged between the upper support and the lower support, the compression bar is inserted in the compression bar holes of the front and back compression bar altitude controllers and arranged between the compression bolt and the adjusting bolt, and the front and back compression bar altitude controllers and the pair of hinge parts are arranged on the same side of the steel girder.
Description
technical field [0001] The invention relates to a test device for testing the bonding performance of fiber-reinforced composite sheets and concrete, which belongs to the material performance testing technology. Mainly used in construction, bridges, water conservancy and transportation and other fields. Background technique [0002] FRP (Fiber Reinforced Plastic) composite materials have the advantages of high strength, light weight, corrosion resistance, fatigue resistance and convenient construction, and have been widely used in the field of civil engineering. FRP composite materials can be used to strengthen the concrete structure for bending resistance, shear bearing capacity and earthquake resistance. One of the main determinants of the reinforcement effect is the bonding performance between FRP and concrete. Experimental studies have found that FRP peeling failure is a common failure mode in FRP-strengthened concrete beams, but the causes of FRP peeling damage are diff...
Claims
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Inventor 潘金龙罗敏周甲佳梁坚凝
Owner SOUTHEAST UNIV
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