Dynamic bonding performance testing device based on Hopkinson pressure rod emission device
A technology of Hopkinson compression rod and launch device, which is applied in the field of dynamic bonding performance testing devices, can solve the problems of difficulty in removing the incident rod and complex structure of the device, and achieve the effect of simple and easy operation and simple structure
Active Publication Date: 2019-05-03
ZHEJIANG UNIV
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Problems solved by technology
The patent document "A Reinforcement Pull-Out Test Device Applicable to Hopkinson Compression Bar" (CN 103134750 A) can realize the bond-slip performance research between steel bar and concrete under impact load, but the structure of the device is complicated, and at the same time Glue needs to be applied between the incident rod and the connector, making it difficult to remove the residual glue on the incident rod later
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[0020] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] A dynamic bonding performance testing device based on a Hopkinson pressure bar launcher, comprising a gas launcher 1, a launcher barrel 2, a bullet 3, a cylindrical sleeve 4 as a launcher sleeve, a barrel support 5, a barrel Putkinson guide rail 6, specimen support, force transmission plate 11, force transmission steel bar 9 and data acquisition system. The gas launching device 1 is connected with the launching barrel 2 as a whole, and is fixed on the Hopkinson guide rail 6 by the barrel support 5, the bullet 3 and the cylindrical sleeve 4 are placed in the launching barrel 2, and the gas launching device 1 can It is an injection device for compressed gas, and its injection port is located in the launch barrel.
[0022] The test piece support includes a reaction force plate 7-2, a horizontal plate 7-4, a middle vertical plate 7-6 and a bottom connection groov...
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The invention discloses a dynamic bonding performance testing device based on a Hopkinson pressure rod emission device. The device comprises a gas emission device, an emitted barrel, a bullet, a cylindrical sleeve, a barrel support seat, a Hopkinson guide rail, a specimen support seat, a force transmission plate, a force transmission steel bar, a round nut, and a data acquisition system. The emission device and the emitted barrel are connected into one body and are fixed to the Hopkinson guide rail through the barrel support seat, and the bullet and the cylindrical sleeve are placed in the emitted barrel. Operation is convenient, the structure is simple, reliability is good, and a dynamic bonding performance test experiment can be completed by using the original emission device of the Hopkinson pressure rod test device.
Description
technical field [0001] The invention relates to the field of material dynamic performance testing equipment, in particular to a dynamic bonding performance testing device based on a Hopkinson pressure bar launching device. Background technique [0002] Reinforced concrete structures can give full play to the advantages of better tensile properties of steel bars and better compressive properties of concrete. Therefore, since its invention, it has been widely used in engineering construction. At present, most buildings in my country are reinforced concrete structures. The bonding force between steel bars and concrete is the basis and premise that steel bars and concrete can work together and cooperate with deformation. However, with the increase of service time of reinforced concrete structures, the phenomenon of bond degradation between steel bars and concrete often occurs. Therefore, the bond-slip problem between steel bars and concrete in reinforced concrete structures is o...
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IPC IPC(8): G01N19/04
Inventor 谢磊李庆华徐世烺
Owner ZHEJIANG UNIV