Corrosion testing device and method for steel-concrete composite beam shear connector

A technology for shear-resistant connectors and test devices, used in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of narrow application range, no test method, concrete cracking and damage, etc., and achieves a wide range of applications. Effect

Active Publication Date: 2015-12-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) The scope of application is relatively narrow, this method is only suitable for stud connectors, not for PBL connectors
[0005] (2) The current corrosion test method is to corrode the shear connectors first, and then pour concrete, which is inconsistent with the fact that the shear connectors in the actual bridge are corroded after pouring
[0006] (3) Under the current corrosion test method, the concrete is not affected in any way. Howev

Method used

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  • Corrosion testing device and method for steel-concrete composite beam shear connector
  • Corrosion testing device and method for steel-concrete composite beam shear connector
  • Corrosion testing device and method for steel-concrete composite beam shear connector

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Embodiment

[0035] The following is a further description of the corrosion test method of the connectors in the steel-concrete composite beam in conjunction with the attached drawings:

[0036] The test object of this embodiment is steel-concrete composite beam, its structure is as follows figure 1 As shown, a shear connector such as a stud connector 2 or a PBL connector 3 is welded on a steel beam 1 , and then concrete 5 is poured to form a wing plate to form a steel-concrete composite beam 6 . When the PBL connector 3 is used, a penetrating steel bar 4 is pierced thereon.

[0037] Such as figure 2 As shown, during the test, the shear connectors were welded on the steel beam, and then concrete 5 was poured to form a steel-concrete composite beam 6, and antirust paint was applied on the surface of the steel beam 1 and the interface with the wing plate. Pour the NaCl solution 7 with a certain concentration in the corrosion pool 12, then put a certain number of pads 13 in the pool, then ...

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Abstract

The invention discloses a corrosion testing device and method for a steel-concrete composite beam shear connector. The device comprises a corrosion pool used for containing an electrolytic solution and soaking a concrete wing plate, a steel-concrete composite beam serving as an electrolytic anode, and an electrolysis circuit, wherein the steel-concrete composite beam is mainly composed of a steel beam, the shear connector and concrete, the shear connector is welded to the steel beam, the concrete is poured outside the shear connector, and the electrolysis circuit comprises an ampere meter connected with the anode, a direct current power source and a cathode. According to the method, the steel-concrete composite beam is reversely buckled into the corrosion pool to enable the electrolytic solution to well soak the concrete wing plate, the power source is connected, and currents are recorded. The method is wider in application range and suitable for various shear connectors such as a stud connector and a PBL connector, coincides with the practical situation better, and can simulate the true corrosion condition of the steel-concrete composite beam shear connector.

Description

technical field [0001] The invention relates to a device and method for testing the corrosion resistance of materials, in particular to a corrosion test device and method for steel-concrete composite beam shear connectors. Background technique [0002] The mechanical properties of steel-concrete composite bridges are affected by environmental erosion. With the rapid development of my country's economic construction, energy consumption and industrial pollution are becoming more and more serious, and the acid rain area has reached more than 30% of the country's land area. In addition, a large number of deserts carried by sand and dust weather in the northern region, harmful ions in saline soil areas, and a large amount of chloride ions in salt fog in coastal areas all affect and threaten the durability of composite structures. During the construction of steel-concrete composite bridges, the steel in contact with the air is generally treated with anti-corrosion treatment, but ...

Claims

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Application Information

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IPC IPC(8): G01N17/02
Inventor 汪炳黄侨邹韵张海龙
Owner SOUTHEAST UNIV
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