A coupling test device and test method for drawing fatigue and corrosion of reinforced concrete bonded sections
A reinforced concrete and test device technology, which is applied in the direction of measuring devices, weather resistance/light resistance/corrosion resistance, and the application of repetitive force/pulsation force to test the strength of materials, etc., can solve the problem of inability to realize the synchronous action of corrosion and drawing of reinforced concrete components, etc. problem, to achieve the effect of simple structure, simple operation and high degree of intelligent control
Inactive Publication Date: 2018-08-07
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
[0006] In order to overcome the defect that the existing device cannot realize the synchronous effect of corrosion and drawing of reinforced concrete members, the present invention aims to provide a coupling test device for drawing fatigue and corrosion of reinforced concrete bonded sections, which can effectively simulate reinforced concrete Drawing and Fatigue Test Under Coupling Action of Corrosive Medium and Drawing Fatigue
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[0037]A coupling test device for drawing fatigue and corrosion of a reinforced concrete bonding section, comprising a supporting steel frame, a fatigue loading device, a reinforced concrete accelerated corrosion cycle device, and a control device. The bending fatigue loading system is located above the drawing device and the environment simulation device, the bending fatigue loading system is controlled by a fatigue loading controller, and the environment simulation device is connected with the computer. The supporting steel frame is composed of upper and lower parts. The superstructure is made up of four upright columns 5, steel plate one 2 as pressing plate, steel plate three 4 as base plate. Four columns 5 are arranged in a regular quadrilateral, and each column 5 is connected with steel plate one 2 by bolts, and passes through steel plate two 3 as a limiting plate and is connected with steel plate three 4 by bolts. The lower structure is composed of four columns 6 and two...
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The invention discloses a reinforced concrete bonding segment drawing fatigue and corrosion coupling testing device and a testing method. The reinforced concrete bonding segment drawing fatigue and corrosion coupling testing device comprises a limiting plate and a corrosion box, the limiting plate is supported by stand columns and horizontally arranged, the corrosion box is fixed to the limiting plate and used for simulating a drying and watering cycle environment, reinforced concrete and a corrosion medium are contained in the corrosion box, a through hole allowing the reinforcing steel bar free end of reinforced concrete to penetrate is formed in the middle of the limiting plate, an anti-percolator is arranged in the through hole, and a fatigue tensioning and pressing device for enabling the reinforcing steel bar free end of the reinforced concrete to be tensioned downwards in the axial direction is arranged below the limiting plate or above the corrosion box. A conductive sheet is arranged in the corrosion box, and the conductive sheet and the reinforcing steel bar of the reinforced concrete are electrically connected with a direct-current instrument through corresponding wires. A durability test of a material under the action of harmful ion erosion and fatigue coupling can be simulated.
Description
technical field [0001] The invention relates to a drawing fatigue and corrosion coupling test device and test method of a reinforced concrete bonding section, belonging to the field of durability of engineering structures. Background technique [0002] Reinforced concrete structures have been exposed to harsh environments with corrosive media for a long time. Under the erosion of harmful ions, not only the effective area of steel bars will be reduced and the mechanical properties will be deteriorated, but also the bonding performance between steel bars and concrete will be weakened, which will eventually lead to concrete Decrease in structural durability. The study of the bond performance of reinforced concrete under the coupling of corrosion and fatigue loads is the basic premise to correctly evaluate and prolong the service life of reinforced concrete members under fatigue loads. [0003] Aiming at the fatigue performance of the bonding performance of steel bars and con...
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IPC IPC(8): G01N3/02G01N3/32G01N17/02
CPCG01N3/02G01N3/32G01N17/02
Inventor 刘扬江楠姜鸿韬张海萍李德如
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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