CN108896400B - Structural test system capable of applying tension-compression-bending shear force - Google Patents
Structural test system capable of applying tension-compression-bending shear force Download PDFInfo
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- CN108896400B CN108896400B CN201810864291.7A CN201810864291A CN108896400B CN 108896400 B CN108896400 B CN 108896400B CN 201810864291 A CN201810864291 A CN 201810864291A CN 108896400 B CN108896400 B CN 108896400B
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing 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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- 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
- G01N2203/0019—Compressive
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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
- G01N2203/0023—Bending
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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
- G01N2203/0025—Shearing
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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
- G01N2203/0026—Combination of several types of applied 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The invention relates to a structure test system capable of applying a tension-compression-bending shear force, which comprises: the L-shaped beam (3) comprises a horizontal part and a vertical part which are integrally connected, and the bottom surface of the middle section of the horizontal part is rigidly connected with the upper part of the test piece; one end of the horizontal force applying device (1) is connected with the reaction frame or the reaction wall surface, and the other end of the horizontal force applying device is connected with the vertical part of the L-shaped beam (3); the upper end of the vertical force applying device (2) is hinged with the bottom surface of the horizontal part of the L-shaped beam (3), and the lower end of the vertical force applying device is hinged with the ground; the test piece support (6) is rigidly connected with the lower part of the test piece; compared with the prior art, the invention can carry out tests under the composite action of unidirectional tension and compression, shearing or tension (compression) bending shearing by applying horizontal acting force and vertical acting force by the horizontal force applying device and the vertical force applying device.
Description
Technical Field
The invention relates to a structure test device, in particular to a structure test system capable of applying a tension-compression-bending shearing force.
Background
In the fields of construction, machinery and the like, a test piece is often required to be subjected to tests under the composite action of unidirectional stretching, shearing or stretching (pressing) and bending shearing, and the mechanical properties of the test piece under the stress states are tested.
The existing test device can only realize the composite state test of two acting forces, and is difficult to test the composite action test of three acting forces.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a structure testing system capable of applying tension-compression-bending shearing force.
The purpose of the invention can be realized by the following technical scheme:
a structural testing system capable of applying a tension-compression-bending shear force, comprising:
the L-shaped beam comprises a horizontal part and a vertical part which are integrally connected, and the bottom surface of the middle section of the horizontal part is rigidly connected with the upper part of the test piece;
one end of the horizontal force applying device is connected with the reaction frame or the reaction wall surface, and the other end of the horizontal force applying device is connected with the vertical part of the L-shaped beam;
the upper end of the vertical force applying device is hinged with the bottom surface of the horizontal part of the L-shaped beam, and the lower end of the vertical force applying device is hinged with the ground;
the test piece support is rigidly connected with the lower part of the test piece;
when a pure shear test is carried out, the vertical force applying device does not apply load, the horizontal force applying device and the central line of the test piece are arranged on the same horizontal line, and the horizontal force applying device applies load to the vertical part of the L-shaped beam;
when the bending shear test is carried out, the vertical force applying device does not apply load, the position of a connecting point of the horizontal force applying device and the reaction frame or the reaction wall is calculated according to a bending moment value applied to the test piece as required, so that the horizontal force applying device is not parallel to the central line of the test piece, and after the installation is completed, the horizontal force applying device applies load to the vertical part of the L-shaped beam;
when a tension-compression test is carried out, the horizontal force applying device is removed, and the vertical force applying device applies load to the horizontal part of the L-shaped beam;
when a tension/compression shear test is carried out, a horizontal force applying device and the center line of a test piece are installed on the same horizontal line, the horizontal force applying device applies load to the vertical part of the L-shaped beam, and meanwhile, the vertical force applying device applies load to the horizontal part of the L-shaped beam;
when a tension/compression bending shear test is carried out, the position of a connecting point of the horizontal force applying device and the reaction frame or the reaction wall is calculated according to a bending moment value applied to a test piece as required, so that the horizontal force applying device is not parallel to the central line of the test piece, after the installation is completed, the horizontal force applying device applies load to the vertical part of the L-shaped beam, and meanwhile, the vertical force applying device applies load to the horizontal part of the L-shaped beam.
The bottom of the vertical force applying device is hinged with a support, and the support is connected with a ground foundation or a ground groove.
The horizontal force applying device and the vertical force applying device are jacks or servo actuators.
The vertical force applying devices are two, one is arranged at one end, far away from the vertical part, of the horizontal part of the L-shaped beam, and the other is arranged at the end, close to the vertical part, of the L-shaped beam.
The bottom surface of the middle section of the horizontal part of the L-shaped beam is connected with the upper part of the test piece through angle steel.
And a bolt hole is reserved in the bottom surface of the middle section of the horizontal part of the L-shaped beam and used for connecting angle steel.
The system also comprises lateral supporting devices, wherein the lateral supporting devices are erected on two sides of the horizontal part of the L-shaped beam and used for limiting the movement track of the L-shaped beam and preventing the lateral shaking.
The lateral supporting device comprises a lateral supporting frame, a lateral supporting cantilever frame and a sliding support, the lateral supporting frame is vertically arranged on two sides of the L-shaped beam horizontal part, and the lateral supporting cantilever frame is fixed on the inner side of the lateral supporting frame and connected with the L-shaped beam horizontal part through the sliding support.
Compared with the prior art, the invention has the following advantages:
(1) the horizontal force applying device and the vertical force applying device apply horizontal acting force and vertical acting force, and tests under the composite action of unidirectional pulling, pressing, shearing or pulling (pressing) bending and shearing can be carried out.
(2) The lateral support frame, the lateral support cantilever frame and the sliding support form a lateral support system of the device, so that the lateral moving range of the L-shaped beam is limited, and the stability of the test piece outside the plane during the test is ensured.
(3) The vertical force applying device is flexible to mount and good in adjustability.
(4) The horizontal force and vertical force applying equipment can be flexibly selected according to the equipment condition of a laboratory.
(5) The two jacks form a supporting system, so that the stability of the device can be flexibly adjusted.
(6) Adopt angle steel connection test device and test piece, can realize installing and removing fast of test piece, promote test efficiency.
Drawings
FIG. 1 is a schematic front view of a testing system of the present embodiment;
FIG. 2 is a schematic side view of the testing system of the present embodiment;
reference numerals:
1 is a horizontal force applying device; 2 is a vertical force applying device; 3 is an L-shaped beam; 4 is a bolt hole; 5 is angle steel; 6 is a test piece support; 7 is a support; 8 is a lateral support frame; 9 is a lateral supporting cantilever frame; and 10 is a sliding support.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
As shown in fig. 1 and 2, a structural testing system capable of applying a tension-compression bending shear force comprises:
the L-shaped beam 3 comprises a horizontal part and a vertical part which are integrally connected, and the bottom surface of the middle section of the horizontal part is rigidly connected with the upper part of the test piece;
one end of the horizontal force applying device 1 is connected with the reaction frame or the reaction wall surface, and the other end is connected with the vertical part of the L-shaped beam 3;
the upper end of each vertical force applying device 2 is hinged with the bottom surface of the horizontal part of the L-shaped beam 3, the lower end of each vertical force applying device is hinged with the support 7, the support 7 is connected with a ground foundation or a ground groove, and the two vertical force applying devices 2 are arranged, wherein one vertical force applying device is arranged at one end, far away from the vertical part, of the horizontal part of the L-shaped beam 3, and the other vertical force applying device is arranged at the part, close to the vertical part, of;
the test piece support 6 is rigidly connected with the lower part of the test piece;
and the lateral supporting devices are erected on two sides of the horizontal part of the L-shaped beam 3 and used for limiting the movement track of the L-shaped beam 3 and preventing the lateral shaking. The lateral supporting device comprises a lateral supporting frame 8, a lateral supporting cantilever frame 9 and a sliding support 10, wherein the lateral supporting frame 8 is vertically arranged on two sides of the horizontal part of the L-shaped beam 3, and the lateral supporting cantilever frame 9 is fixed on the inner side of the lateral supporting frame 8 and is connected with the horizontal part of the L-shaped beam 3 through the sliding support 10.
Horizontal force applying device 1 and vertical force applying device 2 are jack or servo actuator, and the servo actuator that vertical force applying device 2 adopted divides into three parts: the hydraulic actuating device is hinged with the connecting devices at the two ends, and the connecting devices at the two ends are rigidly connected with external equipment.
Bolt holes 4 are reserved in the bottom surface of the middle section of the horizontal part of the L-shaped beam 3, and the bolt holes 4 are connected with the upper part of the test piece through L-shaped angle steel 5.
The following is the working mode:
1) when carrying out the pure shear test, vertical force application device 2 does not exert the load, and horizontal force application device 1 is installed in same water flat line with the test piece central line, and after the installation, carry out calibration to relevant instrument, then horizontal force application device 1 is exerted the load to the vertical portion of L type roof beam 3.
2) When the bending shear test is carried out, the vertical force applying device 2 does not apply load, the position of a connecting point of the horizontal force applying device 1 and a reaction frame or a reaction wall is calculated according to a bending moment value applied to a test piece as required, the horizontal force applying device 1 is enabled not to be parallel to the central line of the test piece, after the connecting point is moved, the originally applied horizontal force is changed into an oblique acting force which forms a certain angle with the horizontal direction, the vertical component of the oblique acting force can generate corresponding bending moment to the test piece, and the horizontal component of the oblique acting force can generate corresponding shearing force to the test piece. After the installation is completed, the relevant instrument is calibrated, then the horizontal force applying device 1 applies load to the vertical part of the L-shaped beam 3, the vertical force applying device 2 plays a role in keeping the balance of the L-shaped beam 3, and the L-shaped beam 3 can still move in the horizontal direction due to the hinged connection mode of the L-shaped beam 3.
3) In the tension and compression test, the horizontal force applying device 1 is removed, and the vertical force applying device 2 applies a load to the horizontal portion of the L-shaped beam 3.
4) When a tension/compression shear test is performed, the horizontal force applying device 1 and the center line of the test piece are installed on the same horizontal line, the horizontal force applying device 1 applies a load to the vertical part of the L-shaped beam 3, and simultaneously, the vertical force applying device 2 applies a load to the horizontal part of the L-shaped beam 3. Horizontal force applying device 1 can produce the shearing action to the test piece, and vertical force applying device 2 then can draw (press) the effect to the test piece, has just so realized carrying on pulling (pressing) the purpose of shearing test of test piece.
5) When a tension/compression bending shear test is carried out, the position of a connecting point of the horizontal force applying device 1 and the reaction frame or the reaction wall is calculated according to a bending moment value applied to a test piece as required, so that the horizontal force applying device 1 is not parallel to the central line of the test piece, after the installation is completed, the horizontal force applying device 1 applies a load to the vertical part of the L-shaped beam 3, and meanwhile, the vertical force applying device 2 applies a load to the horizontal part of the L-shaped beam 3. The principle of action has already been described above in 2), 4).
Claims (6)
1. A structural testing system capable of applying a tension-compression-bending shear force, comprising:
the L-shaped beam (3) comprises a horizontal part and a vertical part which are integrally connected, and the bottom surface of the middle section of the horizontal part is rigidly connected with the upper part of the test piece;
one end of the horizontal force applying device (1) is connected with the reaction frame or the reaction wall surface, and the other end of the horizontal force applying device is connected with the vertical part of the L-shaped beam (3);
the upper end of the vertical force applying device (2) is hinged with the bottom surface of the horizontal part of the L-shaped beam (3), and the lower end of the vertical force applying device is hinged with the ground;
the test piece support (6) is rigidly connected with the lower part of the test piece;
the lateral supporting device comprises a lateral supporting frame (8), a lateral supporting cantilever frame (9) and a sliding support (10), wherein the lateral supporting frame (8) is vertically arranged on two sides of the horizontal part of the L-shaped beam (3), and the lateral supporting cantilever frame (9) is fixed on the inner side of the lateral supporting frame (8) and is connected with the horizontal part of the L-shaped beam (3) through the sliding support (10);
when a pure shear test is carried out, the vertical force applying device (2) does not apply load, the horizontal force applying device (1) and the central line of the test piece are arranged on the same horizontal line, and the horizontal force applying device (1) applies load to the vertical part of the L-shaped beam (3);
when the bending shear test is carried out, the vertical force applying device (2) does not apply load, the position of a connecting point of the horizontal force applying device (1) and a reaction frame or a reaction wall is calculated according to a bending moment value applied to a test piece as required, so that the horizontal force applying device (1) is not parallel to the central line of the test piece, and after the installation is completed, the horizontal force applying device (1) applies load to the vertical part of the L-shaped beam (3);
when a tension-compression test is carried out, the horizontal force applying device (1) is removed, and the vertical force applying device (2) applies load to the horizontal part of the L-shaped beam (3);
when a tension/compression shear test is carried out, the horizontal force applying device (1) and the center line of a test piece are installed on the same horizontal line, the horizontal force applying device (1) applies load to the vertical part of the L-shaped beam (3), and meanwhile, the vertical force applying device (2) applies load to the horizontal part of the L-shaped beam (3);
when a tension/compression bending shear test is carried out, the position of a connecting point of the horizontal force applying device (1) and a reaction frame or a reaction wall is calculated according to a bending moment value applied to a test piece as required, so that the horizontal force applying device (1) is not parallel to the central line of the test piece, after the installation is completed, the horizontal force applying device (1) applies load to the vertical part of the L-shaped beam (3), and meanwhile, the vertical force applying device (2) applies load to the horizontal part of the L-shaped beam (3).
2. A structural testing system capable of applying bending and tensile shear forces according to claim 1, wherein the bottom of the vertical force applying device (2) is hinged with a support (7), and the support (7) is connected with a ground foundation or a ground groove.
3. A structural testing system capable of applying a tension-compression-bending shear force according to claim 1, wherein the horizontal force applying device (1) and the vertical force applying device (2) are jacks or servo actuators.
4. A structural test system capable of applying a tension-compression-bending shear force according to claim 1, wherein the vertical force applying device (2) is provided with two devices, one device is arranged at one end of the horizontal part of the L-shaped beam (3) far away from the vertical part, and the other device is arranged at the end of the L-shaped beam (3) close to the vertical part.
5. The structural test system capable of applying a tension-compression-bending shear force according to claim 1, wherein the bottom surface of the middle section of the horizontal part of the L-shaped beam (3) is connected with the upper part of the test piece through an angle steel (5).
6. A structural test system capable of applying a tension-compression bending shear force according to claim 5, wherein a bolt hole (4) is reserved on the bottom surface of the middle section of the horizontal part of the L-shaped beam (3) and used for connecting an angle steel (5).
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| CN201810864291.7A CN108896400B (en) | 2018-08-01 | 2018-08-01 | Structural test system capable of applying tension-compression-bending shear force |
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| CN201810864291.7A CN108896400B (en) | 2018-08-01 | 2018-08-01 | Structural test system capable of applying tension-compression-bending shear force |
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| CN108896400B true CN108896400B (en) | 2021-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109752243B (en) * | 2019-03-15 | 2020-09-25 | 河南交通职业技术学院 | Compression-shear testing machine |
| CN110243701B (en) * | 2019-07-05 | 2022-02-01 | 山东科技大学 | Torsion shear test device and method for anchored rock mass |
| CN110296901A (en) * | 2019-07-31 | 2019-10-01 | 西安建筑科技大学 | A kind of composite force experimental rig being suitable for steel reinforced concrete special-shaped columns and method |
| CN110777975B (en) * | 2019-11-15 | 2021-08-31 | 中国十七冶集团有限公司 | Steel plate concrete shear wall convenient to limit |
| CN110793769B (en) * | 2019-12-16 | 2021-07-13 | 兰州理工大学 | Civil engineering frame construction's test device |
| CN111665125A (en) * | 2020-07-24 | 2020-09-15 | 天津城建大学 | Novel bending shear reciprocating load test device |
| CN112098203A (en) * | 2020-08-03 | 2020-12-18 | 山东大学 | Fixing device for tensile-shear test of square test piece and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5521144B2 (en) * | 2008-12-05 | 2014-06-11 | 学校法人 工学院大学 | Steel pipe bending apparatus and steel pipe bending method |
| CN103048207B (en) * | 2012-12-13 | 2014-11-05 | 广西大学 | Combined torsional experiment device |
| CN203606232U (en) * | 2013-12-09 | 2014-05-21 | 华东交通大学 | Pressing, bending and twisting composite stress member loading device |
| CN204008303U (en) * | 2014-07-14 | 2014-12-10 | 华东交通大学 | Subjected To Compression, Bending, Shear composite force member load testing machine |
| CN104089820B (en) * | 2014-07-14 | 2016-04-06 | 华东交通大学 | Subjected To Compression, Bending, Shear composite force component load testing machine |
| CN104792628B (en) * | 2015-04-17 | 2018-04-13 | 华侨大学 | One kind becomes space Π type shearing test devices |
| CN104977207A (en) * | 2015-07-23 | 2015-10-14 | 安徽农业大学 | Material mechanical testing machine capable of performing stretching, compressing, shearing and bending tests |
| CN105259020A (en) * | 2015-11-20 | 2016-01-20 | 天津大学 | Seismic performance test loading device for shear wall under combined action of pulling, bending and shearing |
| CN205538433U (en) * | 2015-11-20 | 2016-08-31 | 天津大学 | Experimental loading device of anti -seismic performance under composite action is cut at stretch bending to shear force wall |
| CN205483843U (en) * | 2015-12-02 | 2016-08-17 | 上海筑邦测控科技有限公司 | Loading testing system who can be used to civil engineering structure |
| CN107340190B (en) * | 2017-08-24 | 2023-05-05 | 吉林大学 | Multistage static and dynamic coupling mechanical loading device for high-frequency fatigue test |
| CN207472697U (en) * | 2017-11-28 | 2018-06-08 | 西南交通大学 | Bending component experiment loading unit |
| CN107941617B (en) * | 2018-01-12 | 2020-09-04 | 河南理工大学 | System and method for testing mechanical properties of anchor rod and anchor cable under pulling and shearing action |
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