Power-on acceleration type steel column corrosion device for simulating ocean damp-heat coupling environment

Abstract

The utility model belongs to the technical field of section steel column corrosion testing, and particularly relates to a power-on acceleration section steel column corrosion device for simulating an ocean damp-heat coupling environment. The interior of the rectangular cavity is provided with an electrolyte solution and chlorine salt located at the lower part of the interior of the rectangular cavity under the marine damp-heat coupling effect, and a side pressure mechanism capable of applying pressure to the side wall of the chlorine salt under the marine damp-heat coupling effect is arranged at the lower part of the interior of the rectangular cavity and located at the outer side of the chlorine salt under the marine damp-heat coupling effect. The side pressing mechanism comprises four sets of first electric push rods fixedly connected to the peripheral side of the shell in an annular array, and the output ends of the four sets of first electric push rods all extend into the shell to be fixedly connected with side pressing plates. The device provided by the utility model can effectively simulate the corrosion damage of chlorine salt to the section steel column in a pressure environment under the action of ocean damp-heat coupling.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel column corrosion testing, and in particular relates to an electrified steel column corrosion acceleration device for simulating an ocean wet-heat coupling environment. Background Art

[0002] With the development of society, the manufacturing and construction industries have put forward higher requirements on the performance of building materials. Steel structures have many technical advantages that reinforced concrete cannot match, such as good seismic performance, light weight, fast construction speed, high degree of industrialization, etc., and can be applied to various scenarios;

[0003] Among them, when steel structures are used in coastal projects, due to the metal chemical properties of the steel itself, it is very easy to react with the corrosive media in the hot and humid marine environment (CL - Electrochemical corrosion reactions occur, especially in the developed southeast coastal areas, which are damaged by marine environmental factors such as temperature and humidity changes and chloride ion erosion. These environmental factors lead to external surface rust, rust at joints and even structural rust and fall off during the design service life of steel structures. The corrosion of steel structures that have been in service for a long time under the coupling of coastal moisture and heat is very serious, and the structure deteriorates and fails prematurely. The impact of corrosion on structural safety, usability and durability cannot be ignored.

[0004] Therefore, conducting research on the bearing performance of corroded steel structural components has very important engineering significance in providing sufficient technical and theoretical support for their subsequent widespread application.

[0005] In order to better simulate the marine environment in the prior art, a pressurizing device is usually set to pressurize the liquid. However, when testing the mechanical properties of steel columns after corrosion under the effect of marine moisture and heat coupling, it is necessary to consider the corrosion of the steel columns by chloride salts (i.e., soil in the ocean) under the effect of seawater and marine moisture and heat coupling. In the marine environment, the pressure of seawater and the pressure of the chloride salts themselves under the effect of marine moisture and heat coupling will pressurize the chloride salts, so that the chloride salts and the steel columns are in close contact under the effect of marine moisture and heat coupling. Simply pressurizing the liquid cannot effectively simulate the corrosion damage caused by chloride salts to the steel columns under the pressure environment under the effect of marine moisture and heat coupling. Utility Model Content

[0006] The utility model aims to provide an electric accelerated steel column corrosion device simulating the marine humid heat coupling environment, which can effectively simulate the corrosion damage to the steel column caused by chloride salt under the pressure environment under the marine humid heat coupling effect.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A device for accelerating corrosion of steel columns by electricity for simulating an ocean moisture-heat coupling environment comprises a shell, wherein a rectangular cavity with an upper opening is provided inside the shell, an electrolyte solution and a chloride salt under the action of ocean moisture-heat coupling located at the lower part of the rectangular cavity are arranged inside the rectangular cavity, and a side pressure mechanism capable of exerting pressure on the side wall of the chloride salt under the action of ocean moisture-heat coupling is arranged at the lower part of the rectangular cavity and on the outside of the chloride salt under the action of ocean moisture-heat coupling.

[0009] Furthermore, the side pressure mechanism includes four groups of first electric push rods fixedly connected to the circumferential side of the shell in a circular array, the output ends of the four groups of first electric push rods all extend to the interior of the shell and are fixedly connected to side pressure plates, two opposite side pressure plates among the four side pressure plates form a group, and one group of side pressure plates is a short plate, and the length of the short plate is less than 9 / 10 of the length of the rectangular cavity.

[0010] Furthermore, the length of the short plate is 6 / 10 of the length of the rectangular cavity, and the other group of side pressure plates is a long plate, and the length of the long plate matches the gap of the rectangular cavity.

[0011] Furthermore, a lower support is fixedly connected to the lower side of the shell, a second vertically arranged electric push rod is fixedly connected to the lower support, and an output end of the second electric push rod is fixedly connected to a steel column mounting platform that can vertically extend into the rectangular cavity.

[0012] Furthermore, a Y-axis rail body is fixedly connected to the upper side of the steel column mounting platform, and two first connecting seats are slidably connected inside the Y-axis rail body. Two X-axis rail bodies slidably connected to the upper side of the steel column mounting platform are also installed on the upper side of the steel column mounting platform through a horizontal moving part. The axis of the X-axis rail body and the axis of the Y-axis rail body are vertically arranged, and the interiors of the two X-axis rail bodies are slidably connected to second connecting seats.

[0013] Furthermore, the horizontal moving member includes a screw rod rotatably connected to the upper side of the steel column mounting platform, and a connecting block threadably connected to the screw rod is fixedly connected to the X-axis rail body.

[0014] The technical effects achieved by the utility model are:

[0015] The utility model discloses an electric accelerated steel column corrosion device for simulating the marine moisture-heat coupling environment, which applies pressure to the side wall of the chloride salt under the marine moisture-heat coupling effect by arranging a side pressure mechanism, simulating the water pressure of the real marine environment, and making the chloride salt and the outer wall of the steel column in close contact under the marine moisture-heat coupling effect, thereby effectively simulating the corrosion damage to the steel column caused by the chloride salt under the pressure environment under the marine moisture-heat coupling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial cutaway structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 4 This utility model Figure 2 A partial enlarged view of point A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Shell; 2. Lower support; 3. Side pressure plate; 4. First electric push rod; 5. Second electric push rod; 6. Steel column mounting table; 7. Y-axis rail body; 8. First connecting seat; 9. X-axis rail body; 10. Second connecting seat; 11. Screw; 12. Connecting block. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0023] like Figure 1-2 As shown, an electric acceleration type steel column corrosion device for simulating a marine humid heat coupling environment comprises a shell 1, a rectangular cavity with an upper opening is provided inside the shell 1, an electrolyte solution and a chloride salt under the effect of marine humid heat coupling located at the lower part of the rectangular cavity are arranged inside the rectangular cavity, and a side pressure mechanism that can apply pressure to the side wall of the chloride salt under the effect of marine humid heat coupling is arranged at the lower part of the rectangular cavity and outside the chloride salt under the effect of marine humid heat coupling. At this time, the corrosion condition of the steel column in the marine humid heat coupling environment is simulated by the electrolyte solution and the chloride salt under the effect of marine humid heat coupling, and at the same time, the corrosion efficiency of the steel column is improved by the electrical acceleration of the electrolyte solution to reduce the test time;

[0024] In order to better simulate the corrosion of steel columns by chloride salts under the effect of ocean moisture and heat coupling, pressure is applied to the side wall of chloride salts under the effect of ocean moisture and heat coupling through a side pressure mechanism, so that the chloride salts under the effect of ocean moisture and heat coupling and the outer wall of the steel column are in close contact, which can effectively simulate the corrosion damage to the steel column caused by chloride salts under pressure environment under the effect of ocean moisture and heat coupling.

[0025] At the same time, the electrically accelerated steel column corrosion device may also include an electrolyte solution pressurizing device to pressurize the electrolyte solution.

[0026] Among them, Figure 1-2As shown, the side pressure mechanism includes four groups of first electric push rods 4 fixedly connected to the peripheral side of the housing 1 in an annular array, and the output ends of the four groups of first electric push rods 4 are all extended to the inside of the housing 1 and fixedly connected with side pressure plates 3. Two opposite side pressure plates 3 of the four side pressure plates 3 form a group, and the four side pressure plates 3 are divided into two groups, one of which is a short plate, and the length of the short plate is less than 9 / 10 of the length of the rectangular cavity, that is, when the length of the rectangular cavity is X, the length of the side pressure plate 3 is less than X (9 / 10);

[0027] At this time, by starting the first electric push rod 4 to drive the side pressure plate 3 to move, the side pressure plate 3 pushes the side wall of the chloride salt under the effect of ocean moisture and heat coupling, and the chloride salt under the effect of ocean moisture and heat coupling can be pressurized on the side.

[0028] like Figure 2-3 As shown, the length of the short plate is 6 / 10 of the length of the rectangular cavity, and the other set of side pressure plates 3 is a long plate, and the length of the long plate matches the rectangular cavity and the gap. At this time, the long plate is first driven to move by the first electric push rod 4, so that the side of the long plate and the end of the short plate are abutted, and then the first electric push rod 4 is started to drive the short plate to move, so that the short plate pushes the chloride salt under the effect of the ocean moisture and heat coupling, so that the four side pressure plates 3 can pressurize and push all the chloride salts under the effect of the ocean moisture and heat coupling.

[0029] like Figure 2-3 As shown, in order to make the steel column be able to be relatively simply installed inside the chloride salt under the effect of the ocean's humid heat coupling, a lower support 2 is fixedly connected to the lower side of the shell 1, a second electric push rod 5 arranged vertically is fixedly connected to the lower support 2, and a steel column mounting platform 6 which can extend vertically to the inside of the rectangular cavity is fixedly connected to the output end of the second electric push rod 5, and the steel column can be installed on the upper part of the steel column mounting platform 6, and the outer diameter of the steel column is smaller than the outer diameter of the steel column mounting platform 6;

[0030] When the steel column needs to be installed, the steel column is installed on the upper part of the steel column mounting platform 6, and then the steel column mounting platform 6 is driven to descend by the second electric push rod 5 to move the steel column to the inside of the chloride salt under the action of ocean moisture and heat coupling. When the experiment is over, the steel column mounting platform 6 is driven to rise again by the second electric push rod 5 to move the steel column to the upper side of the chloride salt under the action of ocean moisture and heat coupling for disassembly.

[0031] like Figure 3-4As shown, in order to install steel columns of different types, a Y-axis rail body 7 is fixedly connected to the upper side of the steel column mounting platform 6, and two first connecting seats 8 are slidably connected inside the Y-axis rail body 7. The upper side of the steel column mounting platform 6 is also equipped with two X-axis rail bodies 9 slidably connected to the upper side of the steel column mounting platform 6 through a horizontal moving part. The axis of the X-axis rail body 9 and the axis of the Y-axis rail body 7 are vertically arranged, and the interiors of the two X-axis rail bodies 9 are slidably connected with a second connecting seat 10. At this time, the position of the X-axis rail body 9 is adjusted by the horizontal moving part, and then the position of the first connecting seat 8 and the second connecting seat 10 is adjusted, so that the screw holes of the first connecting seat 8 and the second connecting seat 10 are opposite to each other, and the steel column and the first connecting seat 8 and the second connecting seat 10 can be connected together by screws, thereby completing the fixation of steel columns of different types.

[0032] like Figure 4 As shown, the horizontal moving part includes a screw rod 11 rotatably connected to the upper side of the steel column mounting platform 6, and a connecting block 12 threadedly connected to the screw rod 11 is fixedly connected to the X-axis rail body 9. When the screw rod 11 rotates, the X-axis rail body 9 can be driven to slide through the connecting block 12 to adjust the horizontal position of the X-axis rail body 9, and the position of the X-axis rail body 9 is locked after the adjustment is completed.

[0033] The working principle of the utility model is: the steel column is installed on the upper part of the steel column installation platform 6, and then the steel column installation platform 6 is driven to descend by the second electric push rod 5, so as to move the steel column to the inside of the chloride salt under the effect of the ocean moisture and heat coupling;

[0034] The long board is driven to move by the first electric push rod 4, so that the side of the long board and the end of the short board are abutted against each other, and then the first electric push rod 4 is started to drive the short board to move, so that the short board pushes the chloride salt under the effect of ocean moisture and heat coupling, so that the four side pressure plates 3 pressurize and push all the chloride salt under the effect of ocean moisture and heat coupling, and the side pressure mechanism applies pressure to the side wall of the chloride salt under the effect of ocean moisture and heat coupling, so that the chloride salt under the effect of ocean moisture and heat coupling and the outer wall of the steel column are in close contact, which can effectively simulate the corrosion damage of the chloride salt to the steel column under the pressure environment under the effect of ocean moisture and heat coupling.

[0035] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An electric accelerated steel column corrosion device for simulating an ocean wet-heat coupling environment, comprising a housing (1), wherein a rectangular cavity with an upper opening is provided inside the housing (1), characterized in that: The interior of the rectangular cavity is provided with an electrolyte solution and chlorine salt under the effect of ocean moisture and heat coupling located at the lower part of the rectangular cavity, and a side pressure mechanism capable of applying pressure to the side wall of the chlorine salt under the effect of ocean moisture and heat coupling is provided at the lower part of the rectangular cavity and on the outside of the chlorine salt under the effect of ocean moisture and heat coupling.

2. The device for accelerating corrosion of steel columns simulating a marine hot and humid coupled environment according to claim 1, characterized in that: The side pressure mechanism comprises four groups of first electric push rods (4) fixedly connected to the circumference of the shell (1) in an annular array, the output ends of the four groups of the first electric push rods (4) all extend to the inside of the shell (1) and are fixedly connected to side pressure plates (3), two opposite side pressure plates (3) of the four side pressure plates (3) form a group, and one group of the side pressure plates (3) is a short plate, the length of which is less than 9 / 10 of the length of the rectangular cavity.

3. The device for accelerating corrosion of steel columns simulating a marine hot and humid coupled environment according to claim 2, characterized in that: The length of the short plate is 6 / 10 of the length of the rectangular cavity, and the other group of side pressure plates (3) is a long plate, and the length of the long plate matches the gap of the rectangular cavity.

4. The device for accelerating corrosion of steel columns simulating a marine hot and humid coupled environment according to claim 1, characterized in that: The lower side of the shell (1) is fixedly connected to a lower support (2), a second electric push rod (5) arranged vertically is fixedly connected to the lower support (2), and the output end of the second electric push rod (5) is fixedly connected to a steel column mounting platform (6) that can vertically extend into the interior of the rectangular cavity.

5. The device for accelerating corrosion of steel columns simulating a marine hot and humid coupled environment according to claim 4, characterized in that: The upper side of the steel column mounting platform (6) is fixedly connected to a Y-axis rail body (7), and two first connecting seats (8) are slidably connected inside the Y-axis rail body (7). The upper side of the steel column mounting platform (6) is also equipped with two X-axis rail bodies (9) slidably connected to the upper side of the steel column mounting platform (6) through a horizontal moving member, and the axis of the X-axis rail body (9) and the axis of the Y-axis rail body (7) are arranged vertically, and the interiors of the two X-axis rail bodies (9) are slidably connected to second connecting seats (10).

6. The device for accelerating corrosion of steel columns simulating a marine hot and humid coupled environment according to claim 5, characterized in that: The horizontal moving member comprises a screw rod (11) rotatably connected to the upper side of the steel column mounting platform (6), and a connecting block (12) threadedly connected to the screw rod (11) is fixedly connected to the X-axis rail body (9).

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