Apparatus and method for studying the performance of steel pipe concrete axial tension members under load and corrosion
A technology of concrete-filled steel pipe shafts and components, which is applied in the testing of machines/structural parts, measuring devices, and testing of mechanical parts, can solve the problems of long-term load and electrochemical corrosion tests on steel pipe concrete shafts, and achieve The effect of speeding up the trial progress
Inactive Publication Date: 2018-06-29
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology
At present, the existing test devices and methods can only test the long-term load effect or electrochemical corrosion effect of CFST shaft-tensioned members alone, and cannot simultaneously test the long-term load effect and electrochemical corrosion of CFST shaft-tensioned members
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0036] like Figure 1 ~ Figure 3 As shown, a device for studying the performance of steel pipe concrete axial tension members under load and corrosion is composed of three parts: loading mechanism, corrosion mechanism and measuring mechanism.
[0037] The loading mechanism comprises a lower bearing plate 2a, an upper bearing plate 2b is arranged above the lower bearing plate 2a, mounting holes are respectively arranged on the upper bearing plate 2b and the lower bearing plate 2a, and four pull rods 6 pass through the mounting holes. The hole is installed between the upper bearing plate 2b and the lower bearing plate 2a; each pull rod 6 is provided with a tension nut, the tension nut is composed of an upper nut 8a and a lower nut 8b, and the upper nut 8a is arranged on the pull rod 6 The upper part, the lower nut 8b is arranged on the...
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The invention discloses a device and method for studying the performance of a steel pipe concrete axial-tension member under loads and corrosion, and belongs to the technical field of structural engineering. The device is composed of a loading mechanism, a corroding mechanism and a measuring mechanism. The loading device comprises two bearing plates. A pull rod is arranged between the two bearing plates. A tension nut is arranged on the pull rod. The corroding mechanism comprises a corroding groove, a negative plate and an external DC power supply. The corroding groove is formed in the bearing plate on the lower side. A first insulating layer is arranged between the corroding groove and the bearing plate on the lower side. A prefabricated hole is formed in the bottom of the corroding groove. The negative plate is arranged in the corroding groove. A second insulating layer is arranged between the corroding groove and the negative plate. A negative electrode of the external DC power supply is connected with the negative plate, a positive electrode of the external DC power supply is connected with a steel pipe of the steel pipe concrete axial-tension member. The measuring mechanism comprises a load sensor and a mechanical dial indicator. The method includes the steps of firstly, conducting a test in the initial loading stage; secondly, conducting a test in the electrochemical corroding and long-term loading stage; thirdly, conducting a test in the breakage loading stage.
Description
technical field [0001] The invention belongs to the technical field of structural engineering, and in particular relates to a test device and method for studying the performance of a steel pipe concrete axial tension member under long-term load and electrochemical corrosion environment. Background technique [0002] Steel pipe concrete is a kind of composite structure, which refers to the structure formed by filling concrete in steel pipes and the two materials are jointly stressed. According to the arrangement of steel pipes, it can be divided into solid steel pipe concrete, hollow interlayer steel pipe concrete, centrifugal steel pipe concrete, etc.; according to the cross-sectional shape, it can be divided into circular, square / rectangular, polygonal and special-shaped steel pipe concrete, etc. Concrete filled steel tubes often bear large loads in actual engineering, and are also corroded by corrosive liquids or gases in the surrounding environment. The above problems can...
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IPC IPC(8): G01N17/02G01N3/56G01N3/08G01M13/00
CPCG01M13/00G01N3/08G01N3/56G01N17/02
Inventor 王庆利牛献军韩林海屈绍娥
Owner SHENYANG JIANZHU UNIVERSITY