CN113008665A - Reliable FRP muscle overlap joint performance test device - Google Patents
Reliable FRP muscle overlap joint performance test device Download PDFInfo
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- CN113008665A CN113008665A CN202110148845.5A CN202110148845A CN113008665A CN 113008665 A CN113008665 A CN 113008665A CN 202110148845 A CN202110148845 A CN 202110148845A CN 113008665 A CN113008665 A CN 113008665A
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- sleeve
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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
- G01N3/04—Chucks
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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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- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a reliable FRP rib lap joint performance test device which comprises two sets of sleeve clamps and an instrument clamp, wherein the two sets of sleeve clamps are used for clamping and lapping two ends of a test piece respectively; the sleeve clamp comprises a sleeve clamp body; the sleeve anchor clamps are equipped with two encapsulating sleeve rectangular holes, are furnished with the bolt encapsulating sleeve in the encapsulating sleeve rectangular hole, and bolt encapsulating sleeve outside is equipped with the screw thread, and the bolt encapsulating sleeve is equipped with the appearance chamber that supplies FRP muscle outer end to stretch into, and the sleeve anchor clamps body is equipped with the antiskid and moves rectangular hole, is furnished with the antiskid in the antiskid moves rectangular hole and moves the bolt. During the test, after a certain FRP rib is broken, when the tensioning equipment is about to bias, the pin joint bolt on the clamp can rotate, the posture of the lapped test piece is adjusted, the eccentricity is further reduced, the eccentric force is weakened, and the tensioning equipment is protected.
Description
Technical Field
The invention relates to the field of material performance experiments of civil engineering, in particular to a reliable FRP rib lap joint performance test device.
Background
In the building, the overlapping part of the rib materials is easy to be damaged. Through the lap joint test, can simulate actual overlap joint operating mode, and then guide engineering design, improve the structural safety nature. The FRP rib is a novel material, can replace a reinforcing steel bar in a building, and has a brittle failure mode. When the FRP ribs are subjected to a lap joint test, if one side of the FRP ribs is suddenly broken, an original balance system with the pulled axis can be instantly changed into eccentric tension, so that tensioning equipment is damaged. Tensioning equipment such as MTS systems are expensive to maintain and require a significant amount of time to repair. In addition, the spacing between adjacent overlapping bars cannot be adjusted by common lap performance testing devices.
Disclosure of Invention
In order to solve the problems, the invention provides a reliable FRP rib lapping performance test device which can control the lapping distance and effectively protect tensioning equipment.
In order to achieve the purpose, the invention adopts the technical scheme that: a reliable FRP rib lap joint performance test device comprises two sets of sleeve clamps for respectively clamping two ends of a lap joint test piece and an instrument clamp connected with a tension test device, wherein the instrument clamp comprises an instrument clamp body, one end of the instrument clamp body is provided with a connecting rod connected with the tension test device, and the sleeve clamps are movably hinged with the instrument clamp; the sleeve clamp comprises a strip-shaped sleeve clamp body; the sleeve clamp body is provided with two glue pouring sleeve strip holes penetrating through the sleeve clamp body symmetrically to a perpendicular bisector of the sleeve clamp body on the same vertical plane of a central axis from top to bottom along the length direction of the sleeve clamp body, each glue pouring sleeve strip hole is provided with a bolt glue pouring sleeve penetrating through the glue pouring sleeve strip holes, the outer part of each bolt glue pouring sleeve is provided with a thread, one end of each bolt glue pouring sleeve is provided with an opening, the opening end of each bolt glue pouring sleeve is provided with a containing cavity for the outer end of the FRP rib to extend into along the length direction, and the other end of each bolt glue pouring sleeve is closed; the sleeve anchor clamps body corresponds every encapsulating sleeve rectangular hole and is equipped with two levels respectively and transversely runs through the anti-skidding rectangular hole that the sleeve anchor clamps body and parallel alignment from top to bottom, all is furnished with an anti-skidding bolt that runs through the anti-skidding rectangular hole in every anti-skidding rectangular hole that moves, two upper and lower anti-skidding rectangular holes that correspond every encapsulating sleeve rectangular hole are all crossing with the encapsulating sleeve rectangular hole that corresponds.
The lap joint test piece comprises a concrete cube and two pairs of lapped FRP ribs. During the experiment, FRP muscle one end overlap joint is internal at the concrete cube, and the outer end of FRP muscle stretches into the telescopic appearance chamber rethread encapsulating of bolt encapsulating and seals the connection, and the telescopic both ends of bolt encapsulating after the encapsulating seals the connection are fixed in the encapsulating sleeve rectangular hole through the nut.
Furthermore, two rows of parallel pin joint grooves are formed in the other end of the instrument clamp body to form a pin joint seat, and a first pin joint hole is formed in the pin joint seat; the sleeve clamp comprises a sleeve clamp body and is characterized in that two pin joint lugs which are parallel to each other and are respectively matched with two pin joint grooves of the instrument clamp body are arranged at one end of the sleeve clamp body, second pin joint holes are formed in the pin joint lugs, and the sleeve clamp is movably hinged with the instrument clamp through a pin joint bolt penetrating through the first pin joint hole and the second pin joint hole.
Further, the sleeve clamp body is a cuboid.
According to the invention, the bolt glue filling sleeve is inserted into the long strip hole of the glue filling sleeve, and the distance between two pairs of lapped FRP ribs in the lapped test piece can be adjusted within the length range of the long strip hole of the glue filling sleeve.
The invention has the beneficial effects that: the device can adjust the distance between two pairs of adjacent overlap joint FRP muscle in two encapsulating sleeve rectangular holes according to experimental needs, can also adjust the position of fixed FRP muscle through the cooperation that the antiskid moved the bolt and the antiskid moved the rectangular hole simultaneously, when preventing to test, a certain FRP muscle fracture back, another FRP muscle takes place the displacement in encapsulating sleeve rectangular hole to influence stretch-draw equipment. The device can provide axial tension under the condition that the test piece is normal; after a certain FRP rib is broken, when the tensioning equipment is about to pull in a deviating way, the pin joint bolt on the clamp can rotate, the posture of the overlapped test piece is adjusted, the eccentric distance is further reduced, the eccentric force is weakened, and therefore the tensioning equipment is protected.
Drawings
FIG. 1 is a schematic structural diagram of an FRP rib lap joint performance test device according to the present invention during testing;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a side view of the instrument holder and sleeve holder of the present invention;
FIG. 4 is a top view of a sleeve clamp of the present invention;
FIG. 5 is a schematic diagram of the FRP rib and the bolt glue pouring sleeve in the invention;
FIG. 6 is a schematic view of the FRP rib, the bolt glue pouring sleeve and a partial fit of the sleeve clamp in the invention.
The reference numbers illustrate:
1. an instrument clamp; 10. an instrument clamp body; 11. a connecting rod; 12. a pivoting groove; 2. a sleeve clamp; 20. a sleeve clamp body; 21. a long hole of the glue pouring sleeve is formed; 22. the anti-slip strip holes; 23. a bolt glue pouring sleeve; 24. an anti-slip bolt; 25. pouring glue; 26. a nut; 27. a pivot joint lug; 3. a pivot bolt; 4, FRP ribs; 5. concrete cubes.
Detailed Description
The implementation mode is as follows: referring to fig. 1-6, the reliable FRP rib lap joint performance test device of the present invention includes two sets of sleeve clamps 2 for respectively clamping and lapping two ends of a test piece and an instrument clamp 1 connected with a tension test device, where the instrument clamp 1 includes an instrument clamp body 10, one end of the instrument clamp body 10 is provided with a connecting rod 11 connected with the tension test device, the other end of the instrument clamp body 10 is provided with two parallel rows of pivot grooves 12 to form a pivot joint seat, and the pivot joint seat is provided with a first pivot joint hole; the sleeve clamp 2 comprises a strip-shaped sleeve clamp body 20, one end of the sleeve clamp body 20 is provided with two mutually parallel pivoting lugs 27 which are respectively matched with the two pivoting grooves 12 of the instrument clamp body 10, the pivoting lugs 27 are provided with second pivoting holes, and the sleeve clamp 2 is movably hinged with the instrument clamp 1 through a pivoting bolt 3 which passes through the first pivoting hole and the second pivoting hole; the sleeve clamp body 20 is provided with two glue pouring sleeve strip holes 21 penetrating through the sleeve clamp body 20 from top to bottom along the length direction of the sleeve clamp body 20 and symmetrically arranged on the same vertical plane of the central axis line of the sleeve clamp body 20 along the perpendicular line of the sleeve clamp body 20, each glue pouring sleeve strip hole 21 is provided with a bolt glue pouring sleeve 23 penetrating through the glue pouring sleeve strip hole 21, the outer part of the bolt glue pouring sleeve 23 is provided with a thread, one end of the bolt glue pouring sleeve 23 is provided with an opening, the opening end of the bolt glue pouring sleeve 23 is provided with a containing cavity for the outer end of the FRP rib 4 to extend into along the length direction, and the other end of the bolt glue pouring sleeve 23 is closed; the sleeve clamp body 20 is provided with upper and lower anti-slip elongated holes 22 horizontally and transversely penetrating through the sleeve clamp body 20 and aligned in parallel corresponding to each glue filling sleeve elongated hole 21, each anti-slip elongated hole 22 is provided with an anti-slip bolt 24 penetrating through the anti-slip elongated hole 22, and the anti-slip bolt 24 is used for preventing the bolt glue filling sleeve 23 from slipping laterally. The upper and lower anti-slip elongated holes 22 corresponding to each glue-pouring sleeve elongated hole 21 are intersected with the corresponding glue-pouring sleeve elongated hole 21.
The lap joint test piece comprises a concrete cube 5 and two pairs of overlapped FRP ribs 4, wherein one end of each FRP rib 4 is lapped in the concrete cube 5, the outer end of each FRP rib 4 extends into a containing cavity of a bolt glue pouring sleeve 23 and is sealed and connected through glue pouring 25, and the structure is shown in figure 5. The two ends of the bolt glue-pouring sleeve 23 after glue-pouring sealing connection are fixed in the glue-pouring sleeve strip hole 21 through nuts 26. In the opposite pulling process, if the FRP ribs on one side are broken, the sleeve clamp 2 on the broken side rotates to the undamaged side around the pivot bolt 3, so that the eccentricity is reduced, and the function of protecting tensioning equipment is realized.
The bolt glue pouring sleeve 23 and the anti-slip bolt 24 are both made of high-strength metal or alloy materials.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art are possible within the protective scope of the present invention defined by the claims without departing from the spirit of the present invention.
Claims (3)
1. A reliable FRP rib lap joint performance test device is characterized by comprising two sets of sleeve clamps (2) for respectively clamping two ends of a lap joint test piece and an instrument clamp (1) connected with a tension test device, wherein the instrument clamp (1) comprises an instrument clamp body (10), and one end of the instrument clamp body (10) is provided with a connecting rod (11) connected with the tension test device; the sleeve clamp (2) comprises a strip-shaped sleeve clamp body (20), and the sleeve clamp (2) is movably hinged with the instrument clamp (1); the sleeve clamp body (20) is provided with two glue pouring sleeve strip holes (21) penetrating through the sleeve clamp body (20) symmetrically to a perpendicular bisector of the sleeve clamp body (20) on the same vertical plane of a central axis from top to bottom along the length direction of the sleeve clamp body (20), each glue pouring sleeve strip hole (21) is provided with a bolt glue pouring sleeve (23) penetrating through the glue pouring sleeve strip hole (21), the outer part of each bolt glue pouring sleeve (23) is provided with a thread, one end of each bolt glue pouring sleeve (23) is provided with an opening, the opening end of each bolt glue pouring sleeve (23) is provided with a containing cavity for the outer end of the FRP rib (4) to extend into along the length direction, and the other end of each bolt glue pouring sleeve (23) is closed; the sleeve clamp body (20) is provided with an upper anti-slip elongated hole (22) and a lower anti-slip elongated hole (22) which horizontally and transversely penetrate through the sleeve clamp body (20) and are aligned in parallel corresponding to each glue pouring sleeve elongated hole (21), each anti-slip elongated hole (22) is provided with an anti-slip bolt (24) penetrating through the anti-slip elongated hole (22), and the upper anti-slip elongated hole (22) and the lower anti-slip elongated hole (22) corresponding to each glue pouring sleeve elongated hole (21) are intersected with the corresponding glue pouring sleeve elongated hole (21);
the overlap joint test piece includes concrete cube (5) and two pairs of lapped FRP muscle (4), FRP muscle (4) one end overlap joint is in concrete cube (5), the outer end of FRP muscle (4) stretches into the appearance chamber of bolt encapsulating sleeve (23) and connects through encapsulating (25) seal again, the both ends of bolt encapsulating sleeve (23) after the encapsulating seal is connected are fixed in encapsulating sleeve rectangular hole (21) through nut (26).
2. The reliable FRP rib lap joint performance test device according to claim 1, wherein the other end of the instrument clamp body (10) is provided with two parallel rows of pivot grooves (12) to form a pivot seat, and the pivot seat is provided with a first pivot hole; the sleeve clamp is characterized in that one end of the sleeve clamp body (20) is provided with two pivoting lugs (27) which are parallel to each other and respectively matched with the two pivoting grooves (12) of the instrument clamp body (10), a second pivoting hole is formed in each pivoting lug (27), and the sleeve clamp (2) is movably hinged with the instrument clamp (1) through a pivoting bolt (3) penetrating through the first pivoting hole and the second pivoting hole.
3. The reliable FRP rib lap joint performance test device according to claim 1, wherein the sleeve clamp body (20) is a rectangular parallelepiped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148845.5A CN113008665B (en) | 2021-02-03 | 2021-02-03 | Reliable FRP muscle overlap joint performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148845.5A CN113008665B (en) | 2021-02-03 | 2021-02-03 | Reliable FRP muscle overlap joint performance test device |
Publications (2)
| Publication Number | Publication Date |
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| CN113008665A true CN113008665A (en) | 2021-06-22 |
| CN113008665B CN113008665B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110148845.5A Active CN113008665B (en) | 2021-02-03 | 2021-02-03 | Reliable FRP muscle overlap joint performance test device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954200A (en) * | 2014-05-15 | 2014-07-30 | 沈阳建筑大学 | Method of FRP reinforced concrete bond slip test |
| CN107340186A (en) * | 2017-07-07 | 2017-11-10 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of non-standard concrete fracture performance test apparatus |
| CN107817172A (en) * | 2017-09-18 | 2018-03-20 | 华南理工大学 | A kind of anti-eccentric loading clamp of double-shear experiment holds device and method |
| CN108204921A (en) * | 2018-01-29 | 2018-06-26 | 浙江工业大学 | A kind of device that concrete is made to generate uniform tension damage |
| CN109752154A (en) * | 2018-10-31 | 2019-05-14 | 中国飞机强度研究所 | It is a kind of for docking the bending resistance fixture and clamp method of wall panel structure |
| CN111665133A (en) * | 2020-06-24 | 2020-09-15 | 扬州大学 | FRP rib tensile load holding and testing device and operation method thereof |
-
2021
- 2021-02-03 CN CN202110148845.5A patent/CN113008665B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954200A (en) * | 2014-05-15 | 2014-07-30 | 沈阳建筑大学 | Method of FRP reinforced concrete bond slip test |
| CN107340186A (en) * | 2017-07-07 | 2017-11-10 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of non-standard concrete fracture performance test apparatus |
| CN107817172A (en) * | 2017-09-18 | 2018-03-20 | 华南理工大学 | A kind of anti-eccentric loading clamp of double-shear experiment holds device and method |
| CN108204921A (en) * | 2018-01-29 | 2018-06-26 | 浙江工业大学 | A kind of device that concrete is made to generate uniform tension damage |
| CN109752154A (en) * | 2018-10-31 | 2019-05-14 | 中国飞机强度研究所 | It is a kind of for docking the bending resistance fixture and clamp method of wall panel structure |
| CN111665133A (en) * | 2020-06-24 | 2020-09-15 | 扬州大学 | FRP rib tensile load holding and testing device and operation method thereof |
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| CN113008665B (en) | 2023-05-09 |
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Address after: 527499 5th floor, Xiangshun group office building, 688 Dongdi South Road, Xincheng Town, Xinxing County, Yunfu City, Guangdong Province Applicant after: Guangdong Xiangshun Construction Group Co.,Ltd. Address before: 527499 5th floor, Xiangshun group office building, 688 Dongdi South Road, Xincheng Town, Xinxing County, Yunfu City, Guangdong Province Applicant before: GUANGDONG XIANGSHUN BUILDING ENGINEERING CO.,LTD. |
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