CN218629449U - Measuring device for interface bonding strength of concrete filled steel tube member - Google Patents
Measuring device for interface bonding strength of concrete filled steel tube member Download PDFInfo
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- CN218629449U CN218629449U CN202222814313.3U CN202222814313U CN218629449U CN 218629449 U CN218629449 U CN 218629449U CN 202222814313 U CN202222814313 U CN 202222814313U CN 218629449 U CN218629449 U CN 218629449U
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Abstract
The utility model relates to a measurement of concrete filled steel tube component interfacial adhesion intensity specifically is a measuring device of concrete filled steel tube component interfacial adhesion intensity. In order to solve the problem how to measure the interfacial adhesion strength of the concrete filled steel tube member, the event provides a measuring device of the interfacial adhesion strength of the concrete filled steel tube member, including the press, the concrete filled steel tube member, the steel block, force sensor, go up displacement sensor, the bottom of concrete is higher than the bottom face of steel pipe, the concrete filled steel tube member, the steel block, the steel sheet, force sensor is pressed between the top and the bottom of press from supreme down in proper order, it is fixed in the press bottom through the magnetic base to go up displacement sensor, go up displacement sensor's axial and arrange and its measuring end butt in the part of the non-with steel block contact of steel sheet bottom surface along the direction of height. The utility model discloses can realize the bonding strength survey of reinforced concrete component under the loading effect, simple structure, convenient operation, the result is accurate.
Description
Technical Field
The utility model relates to a component interfacial adhesion strength technical field, in particular to concrete filled steel tube component interfacial adhesion strength's measurement specifically is a concrete filled steel tube component interfacial adhesion strength's measuring device.
Background
In actual working conditions, the steel pipe and the concrete in the concrete-filled steel pipe member are always in different load bearing states, the transmission between the steel pipe and the concrete interface can occur, particularly at structural discontinuities such as nodes, column ends and the like, so the bonding performance of the concrete-filled steel pipe member interface is very important, how to measure the bonding strength of the member interface becomes an important subject of research in the industry, and the method has important guiding value for the design of the concrete-filled steel pipe member.
Disclosure of Invention
The utility model discloses a solve the problem of how to measure concrete filled steel tube component interfacial adhesion strength, the event provides a concrete filled steel tube component interfacial adhesion strength's measuring device.
The utility model discloses an adopt following technical scheme to realize: the utility model provides a measuring device of steel pipe concrete component interfacial adhesion intensity, including the press, the steel pipe concrete component, the steel billet, force sensor, at least one goes up displacement sensor, the steel pipe concrete component includes steel pipe and concrete, the bottom of concrete is higher than the bottom face of steel pipe (guarantees that the concrete has the pushing down volume), the steel pipe concrete component, the steel billet, the steel sheet, force sensor is pressed between the top and the bottom of press from supreme in proper order down, the steel billet is pressed on concrete upper portion (the skilled person in the art knows, will do the pushing out experiment of this type, the purpose is to let the concrete produce the displacement relative to the steel pipe, thereby observe the displacement volume, so the steel billet is only pressed on concrete upper portion, but not steel pipe upper portion), the surface area of steel sheet is greater than the cross sectional area of steel pipe, go up displacement sensor and be fixed in the pressure portion through the magnetic base, the axial of last displacement sensor is arranged along the direction of height and its measuring terminal butt in the steel sheet bottom face not the part of contact with the steel billet.
When the device is used, the device is used for performing a push-out test on concrete, a bonding strength-relative slip curve (a curve of stress and displacement) is measured through the force sensor and the upper displacement sensor, and then the bonding performance between a steel pipe and the concrete in the concrete-filled steel pipe member is obtained through analyzing the bonding strength-relative slip curve.
Further, this measuring device still includes two displacement sensor down, the steel sheet, the billet, be located the left and right sides both ends of steel pipe concrete component bottom respectively and be used for supporting two brace tables of steel pipe concrete component, the steel sheet is pasted in the center of the bottom of concrete, the billet be located the steel sheet the below and with the steel sheet between through the perpendicular fixed connection of vertical connecting piece, the billet along the radial arrangement of steel pipe and its both ends expose in the steel pipe and form first end and the second end that exposes respectively, two displacement sensor's measuring end respectively butt expose in first end and the second end that exposes and two displacement sensor all pass through magnetic base and brace table fixed connection down. The light relies on the upper displacement sensor, the displacement data is limited, and for increasing the measurement accuracy, the lower displacement sensor is added, the average value of the upper displacement sensor and the lower displacement sensor is taken as the final displacement measurement data, the problem of mounting the lower displacement sensor is solved through the steel bar and steel sheet structure, the structure is simple, and the concept is ingenious.
The utility model discloses produced beneficial effect as follows: the utility model discloses can realize the bonding strength survey of reinforced concrete component under the loading effect, simple structure, convenient operation, the result is accurate.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a bottom view of the steel pipe concrete member of fig. 2 assembled therewith.
In the figure: the device comprises a steel pipe, 2 concrete, 3 steel blocks, 4 steel plates, 5 force sensors, 6 upper displacement sensors, 7 lower displacement sensors, 8 steel bars, 9 steel plates, 10 supporting platforms, 11 bolts and 12 strain gauges.
Detailed Description
As shown in fig. 1, a measuring device for interfacial bonding strength of a concrete filled steel tube member, which comprises a press machine, the concrete filled steel tube member, a steel block 3, a force sensor 5, two upper displacement sensors 6, the concrete filled steel tube member comprises a steel tube 1 and concrete 2, the bottom of the concrete 2 is higher than the bottom end face of the steel tube 1, the concrete filled steel tube member, the steel block 3, a steel plate 4, the force sensor 5 is pressed between the top and the bottom of the press machine from bottom to top in sequence, the steel block 3 is pressed on the upper portion of the concrete 2 to ensure effective loading of a pushing load, the surface area of the steel plate 4 is larger than the cross section area of the steel tube 1, the two upper displacement sensors 6 are fixed at the bottom of the press machine through a magnetic base, the axial directions of the two upper displacement sensors 6 are arranged, and the measuring ends of the two upper displacement sensors are abutted to the bottom face of the steel plate 4 and the non-contact part of the steel block 3.
When the device is used, the device is used for performing a push-out test on the concrete 2, a bonding strength-relative slip curve (a curve of stress and displacement) is measured through the force sensor 5 and the upper displacement sensor 6, and then the bonding performance between the steel tube 1 and the concrete 2 in the steel tube concrete member is obtained through analyzing the bonding strength-relative slip curve.
In specific implementation, as shown in fig. 1 to 3, the measuring device further includes two lower displacement sensors 7, a steel sheet 9, a steel bar 8, two support tables 10 respectively located at the left and right ends of the bottom of the concrete filled steel tube member and used for supporting (lifting) the concrete filled steel tube member, the steel sheet 9 is adhered to the center of the bottom of the concrete filled steel tube 2, the steel bar 8 is located below the steel sheet 9 and vertically and fixedly connected with the steel sheet 9 through a vertical connecting piece, the steel sheet 8 is radially arranged along the steel tube 1, and the two ends of the steel sheet are exposed out of the steel tube 1 to form a first exposed end and a second exposed end respectively, the measuring ends of the two lower displacement sensors 7 are respectively abutted to the first exposed end and the second exposed end, and the two lower displacement sensors 7 are fixedly connected with the support tables 10 through magnetic bases. The light relies on the upper displacement sensor 6, the displacement data is limited, and in order to increase the measurement accuracy, the lower displacement sensor 7 is additionally arranged, the average value of the upper displacement sensor 6 and the lower displacement sensor 7 is taken as the final displacement measurement data, the problem of mounting the lower displacement sensor 7 is solved through the steel bar 8 and steel sheet 9 structure, the structure is simple, and the conception is ingenious.
During the concrete implementation, vertical connecting piece is bolt 11, is equipped with 11 holes in the billet 8, is equipped with the screw hole on the steel sheet 9, and bolt 11 passes 11 holes in the bolt and twists in the screw hole again behind the nut. The structure is convenient to mount and dismount.
During specific implementation, the radial distance between the circumferential edge of the steel block 3 and the inner surface of the steel pipe 1 is 10mm, and the accuracy of a measuring result is further improved. The support platform 10 is a channel steel with a downward opening, and is common in structure and low in cost. The steel block 3 is provided with scales arranged along the height direction, so that the test process can be observed and released in real time. Be equipped with a plurality ofly on the outer wall of steel pipe 1 and follow the foil gage 12 that 1 length direction equidistance of steel pipe arranged, conveniently obtain foil gage 12 data, do the accuracy for studying the meeting an emergency of steel pipe 1.
In the present embodiment, the steel pipe 1 is cylindrical, the steel block 3 is cylindrical, and the steel piece 9 is circular. The steel sheet 9 is adhered to the center of the bottom of the concrete 2 by AB glue.
Claims (10)
1. The utility model provides a measuring device of steel pipe concrete member interfacial adhesion strength, a serial communication port, the press comprises a press, the steel pipe concrete member, steel billet (3), force transducer (5), at least one goes up displacement sensor (6), the steel pipe concrete member includes steel pipe (1) and concrete (2), the bottom of concrete (2) is higher than the bottom face of steel pipe (1), the steel pipe concrete member, steel billet (3), steel sheet (4), force transducer (5) are supreme pressed between the top and the bottom of press in proper order down, steel billet (3) are pressed in concrete (2) upper portion, the surface area of steel sheet (4) is greater than the cross sectional area of steel pipe (1), go up displacement sensor (6) and be fixed in the press bottom through the magnetic base, the axial of going up displacement sensor (6) is arranged and its measuring end butt in the steel sheet (4) bottom surface not with the part of steel billet (3) contact along the direction of height.
2. The apparatus for measuring the interfacial adhesion strength of a concrete filled steel tube member according to claim 1, wherein the upper displacement sensors (6) are two.
3. The device for measuring the interfacial bonding strength of the concrete-filled steel tube member according to claim 1 or 2, further comprising two lower displacement sensors (7), a steel sheet (9), a steel bar (8), and two support tables (10) which are respectively located at the left end and the right end of the bottom of the concrete-filled steel tube member and are used for supporting the concrete-filled steel tube member, wherein the steel sheet (9) is adhered to the center of the bottom of the concrete (2), the steel bar (8) is located below the steel sheet (9) and is vertically and fixedly connected with the steel sheet (9) through a vertical connecting piece, the steel bar (8) is radially arranged along the steel tube (1), and two ends of the steel bar are exposed out of the steel tube (1) to form a first exposed end and a second exposed end respectively, the measuring ends of the two lower displacement sensors (7) are abutted to the first exposed end and the second exposed end respectively, and the two lower displacement sensors (7) are fixedly connected with the support tables (10) through magnetic force seats.
4. The device for measuring the interfacial adhesion strength of the steel tube concrete member according to claim 3, wherein the vertical connecting member is a bolt (11), the steel bar (8) is provided with a bolt (11) hole, the steel sheet (9) is provided with a threaded hole, and the bolt (11) passes through the bolt (11) hole and is screwed into the nut and then is screwed into the threaded hole.
5. The device for measuring the interfacial adhesion strength of the steel tube concrete member according to claim 4, wherein the radial distance from the circumferential edge of the steel block (3) to the inner surface of the steel tube (1) is 10mm.
6. The device for measuring the interfacial adhesion strength of a concrete filled steel tube member according to claim 5, wherein the support platform (10) is a channel with a downward opening.
7. The device for measuring the interfacial adhesion strength of the steel tube concrete member according to claim 6, wherein the steel block (3) is provided with scales arranged along the height direction.
8. The device for measuring the interfacial adhesion strength of the steel tube concrete member according to claim 7, wherein the outer wall of the steel tube (1) is provided with a plurality of strain gauges (12) which are equidistantly arranged along the length direction of the steel tube (1).
9. The apparatus for measuring the interfacial adhesion strength of a concrete filled steel tube member according to claim 8, wherein the steel tube (1) has a cylindrical shape, the steel block (3) has a cylindrical shape, and the steel sheet (9) has a circular shape.
10. The apparatus for measuring the interfacial adhesion strength of a concrete filled steel tube member according to claim 9, wherein the steel sheet (9) is adhered to the center of the bottom of the concrete (2) by using AB glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222814313.3U CN218629449U (en) | 2022-10-25 | 2022-10-25 | Measuring device for interface bonding strength of concrete filled steel tube member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222814313.3U CN218629449U (en) | 2022-10-25 | 2022-10-25 | Measuring device for interface bonding strength of concrete filled steel tube member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218629449U true CN218629449U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222814313.3U Active CN218629449U (en) | 2022-10-25 | 2022-10-25 | Measuring device for interface bonding strength of concrete filled steel tube member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218629449U (en) |
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2022
- 2022-10-25 CN CN202222814313.3U patent/CN218629449U/en active Active
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