CN111912701A - Concrete core appearance axial tensile test auxiliary device - Google Patents
Concrete core appearance axial tensile test auxiliary device Download PDFInfo
- Publication number
- CN111912701A CN111912701A CN202010780616.0A CN202010780616A CN111912701A CN 111912701 A CN111912701 A CN 111912701A CN 202010780616 A CN202010780616 A CN 202010780616A CN 111912701 A CN111912701 A CN 111912701A
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- pull rod
- ball head
- concrete core
- screw
- head pull
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
An auxiliary device for an axial tensile test of a concrete core sample, in particular to the technical field of concrete quality detection of construction engineering, comprises a bonding plate, a pulling plate, a screw rod and a ball pull rod; one side of the bonding plate is provided with a circular groove slightly larger than the diameter of the concrete core sample, the other side of the bonding plate is provided with a screw hole, and the positions of the screw holes correspond to the positions of the circular holes on the pulling plate one by one; the bonding plate and the pulling plate can be fixedly connected by screwing the screw rod into the screw hole; the center of the pulling plate is provided with a central hole and a spherical clamping groove, the ball head pull rod is cylindrical, one end of the ball head pull rod is processed into a spherical shape with the diameter larger than that of the ball head pull rod, and the diameter of the ball head pull rod is smaller than the inner diameter of the central hole, so that an angle clearance of +/-10 degrees is formed between the ball head pull rod and the axis of the central hole; the invention has the beneficial effects that: the device can quickly carry out installation, leveling and stretching of the axial tensile test piece of the concrete core sample, achieves simple, convenient and quick installation, can be repeatedly used, and enables the axial tensile test process of the concrete core sample to be quick, accurate, efficient and energy-saving.
Description
Technical Field
The invention relates to the technical field of construction engineering concrete quality detection, in particular to an auxiliary device for an axial tensile test of a concrete core sample.
Background
In the specification of the Hydraulic concrete test Specification (DL/T5150-2017), it is clear that a concrete core sample can be developed according to the 4.5 th section of concrete axial tensile test in the specification, only a schematic diagram that two ends of the core sample need to be bonded with a pulling plate by using an epoxy resin adhesive is given in the specification, a method for installing the core sample on a tensile testing machine is not given, and the axial stress of the core sample test piece is ensured in the tensile process; at present, no existing device on the market can be purchased and used, and the operation of a tester is difficult.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an auxiliary device for an axial tensile test of a concrete core sample, which is quick to mount and accurate to position and can ensure quick assembly and disassembly, stable process and accurate data during the test, thereby solving the technical defects in the prior stage; the structure is as follows: the bonding plate (1), the pulling plate (2), the screw (3) and the ball head pull rod (4); one side of the bonding plate (1) is provided with a circular groove (6) slightly larger than the diameter of the concrete core sample (5), the other side of the bonding plate is provided with a screw hole (7), and the positions of the screw holes (7) correspond to the positions of the circular holes (8) on the pulling plate (2) one by one; the bonding plate (1) and the pulling plate (2) can be fixedly connected by screwing the screw (3) into the screw hole (7); the center of the pull plate (2) is provided with a center hole (9) and a spherical clamping groove (10), the ball head pull rod (4) is cylindrical, one end of the ball head pull rod is processed into a sphere with a diameter larger than that of the ball head pull rod, the diameter of the ball head pull rod (4) is smaller than the inner diameter of the center hole (9), and an angle gap of +/-10 degrees is formed between the ball head pull rod (4) and the axis of the center hole (9).
The bonding plate (1), the pulling plate (2), the screw rod (3) and the ball head pull rod (4) are all made of high-strength steel.
The screw hole (7), the round hole (8) and the screw rod (3) are all provided with 4 groups.
The inner diameter of the circular groove (6) can be processed and produced according to concrete core samples (5) with different diameters.
The using method of the invention comprises the following steps:
before carrying out an axial tensile test of a concrete core sample, two ends of the concrete core sample (5) are cut flat and then are bonded into a circular groove (6) on a bonding plate (1) by epoxy resin, a ball head pull rod (4) penetrates through a central hole (9) of a pull plate (2), the ball head end of the ball head pull rod (4) is clamped into a spherical clamping groove (10) of the pull plate (2), the pull plate (2) is fixedly connected with the bonding plate (1) through a screw (3), and finally the tail end of the ball head pull rod (4) is directly clamped on a clamping jaw of a tensile testing machine to carry out the tensile test; because the ball-end pull rod (4) and the axis of the central hole (9) have an angle clearance of +/-10 degrees, the angle of the pull rod can be automatically adjusted to adapt to the unparallel of the two end surfaces of the concrete core sample test piece in the stretching process, and the concrete core sample is ensured to be in an axial stress state in the stretching process; the laboratory only needs to be equipped with two arm-tie, eight screw rods and two bulb pull rods, can dismantle used repeatedly, and the bonding board can be confirmed according to the quantity of concrete core appearance.
The invention has the beneficial effects that:
the invention can quickly carry out the installation, leveling and stretching of the concrete core sample axial tensile test piece, achieves the effects of simple and quick installation, axial stress of the core sample test piece and repeated use, and leads the concrete core sample axial tensile test process to be quick, accurate, efficient and energy-saving.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an adhesive sheet;
FIG. 3 is a cross-sectional view of an adhesive sheet;
FIG. 4 is a schematic drawing of a pulling plate;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
in the figure: 1. the concrete core sample comprises a bonding plate, 2, a pulling plate, 3, a screw rod, 4, a ball head pulling rod, 5, a concrete core sample, 6, a circular groove, 7, a screw hole, 8, a circular hole, 9, a central hole, 10 and a spherical clamping groove.
Detailed Description
Embodiment 1, as shown in the figure, the invention provides an auxiliary device for an axial tensile test of a concrete core sample, which comprises an adhesive plate (1), a pulling plate (2), a screw (3) and a ball-head pull rod (4); one side of the bonding plate (1) is provided with a circular groove (6) slightly larger than the diameter of the concrete core sample (5), the other side of the bonding plate is provided with a screw hole (7), and the positions of the screw holes (7) correspond to the positions of the circular holes (8) on the pulling plate (2) one by one; the bonding plate (1) and the pulling plate (2) can be fixedly connected by screwing the screw (3) into the screw hole (7); the center of the pull plate (2) is provided with a center hole (9) and a spherical clamping groove (10), the ball head pull rod (4) is cylindrical, one end of the ball head pull rod is processed into a sphere with a diameter larger than that of the ball head pull rod, the diameter of the ball head pull rod (4) is smaller than the inner diameter of the center hole (9), and an angle gap of +/-10 degrees is formed between the ball head pull rod (4) and the axis of the center hole (9).
The bonding plate (1), the pulling plate (2), the screw rod (3) and the ball head pull rod (4) are all made of high-strength steel.
The screw hole (7), the round hole (8) and the screw rod (4) are all provided with 4 groups.
The inner diameter of the circular groove (6) can be processed and produced according to concrete core samples (5) with different diameters.
Claims (4)
1. The utility model provides a concrete core appearance axial tensile test auxiliary device which the structure is: the bonding plate (1), the pulling plate (2), the screw (3) and the ball head pull rod (4); one side of the bonding plate (1) is provided with a circular groove (6) slightly larger than the diameter of the concrete core sample (5), the other side of the bonding plate is provided with a screw hole (7), and the positions of the screw holes (7) correspond to the positions of the circular holes (8) on the pulling plate (2) one by one; the bonding plate (1) and the pulling plate (2) can be fixedly connected by screwing the screw (3) into the screw hole (7); the center of the pull plate (2) is provided with a center hole (9) and a spherical clamping groove (10), the ball head pull rod (4) is cylindrical, one end of the ball head pull rod is processed into a sphere with a diameter larger than that of the ball head pull rod, the diameter of the ball head pull rod (4) is smaller than the inner diameter of the center hole (9), and an angle gap of +/-10 degrees is formed between the ball head pull rod (4) and the axis of the center hole (9).
2. The concrete core axial tension test auxiliary device of claim 1, wherein: the bonding plate (1), the pulling plate (2), the screw rod (3) and the ball head pull rod (4) are all made of high-strength steel.
3. The concrete core axial tension test auxiliary device of claim 1, wherein: the screw hole (7), the round hole (8) and the screw rod (3) are all provided with 4 groups.
4. The concrete core axial tension test auxiliary device of claim 1, wherein: the inner diameter of the circular groove (6) can be processed and produced according to concrete core samples (5) with different diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780616.0A CN111912701A (en) | 2020-08-06 | 2020-08-06 | Concrete core appearance axial tensile test auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780616.0A CN111912701A (en) | 2020-08-06 | 2020-08-06 | Concrete core appearance axial tensile test auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111912701A true CN111912701A (en) | 2020-11-10 |
Family
ID=73287860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010780616.0A Pending CN111912701A (en) | 2020-08-06 | 2020-08-06 | Concrete core appearance axial tensile test auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111912701A (en) |
-
2020
- 2020-08-06 CN CN202010780616.0A patent/CN111912701A/en active Pending
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