CN217878623U - A buckling restrained device that is used for steel circulation to draw pressure hysteresis performance test - Google Patents
A buckling restrained device that is used for steel circulation to draw pressure hysteresis performance test Download PDFInfo
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- CN217878623U CN217878623U CN202221962058.0U CN202221962058U CN217878623U CN 217878623 U CN217878623 U CN 217878623U CN 202221962058 U CN202221962058 U CN 202221962058U CN 217878623 U CN217878623 U CN 217878623U
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Abstract
The utility model discloses an anti-buckling device for steel circulation is drawn and is pressed hysteresis performance test belongs to steel sheet circulation loading test's anti-buckling technical field, including four anti-buckling components, cotter and bolt assembly, treat that the test piece is dog bone shape test piece, upper and lower two sections are the grip block of broad, the middle section is narrower parallel section, upper and lower two sections grip block is the transition segmental arc with the linking portion of parallel section, anti-buckling component includes clamping part and segmental arc dado, the centre gripping recess has been seted up at the middle part of clamping part, the position and the size of centre gripping recess match with the grip block, segmental arc dado and the position and the size phase-match of transition segmental arc, four anti-buckling components set up respectively in the left and right sides of upper and lower two sections grip block in pairs, the restraint has been applyed to the parallel section of dog bone shape test piece to the current anti-buckling device that is used for steel circulation is drawn and is pressed hysteresis performance test has been solved, lead to the unsafe technical problem of test result.
Description
Technical Field
The utility model belongs to the technical field of the buckling restrained of steel sheet circulation loading test, concretely relates to buckling restrained device that is used for steel circulation to draw and press hysteresis performance test.
Background
The steel constitutive model is the basis for researching the seismic performance and the bearing performance of a steel structure, generally comprises a monotone (tension and compression) and hysteresis constitutive model, however, a dog bone-shaped test piece steel plate processed according to the existing standard is subjected to an axial (length direction) tension and compression circulating strain control loading test under the condition that no buckling prevention measures are adopted, and particularly when compressive strain is applied, buckling instability is easy to occur, so that the test failure is caused, and great difficulty is brought to the measurement of the steel constitutive model.
The buckling-restrained device fastens and restrains the test piece along the thickness direction in the test loading process, so that the buckling of the test piece in the test process is avoided, and the success of the test is further ensured.
At present, the buckling-restrained device of some panel test pieces fastens and restrains the dog bone test piece along the thickness direction, but also imposes the restraint on the parallel section of the dog bone test piece simultaneously, leads to the fact that can't guarantee that the parallel section is in simple tensile state completely in the testing process to can't guarantee experimental accuracy.
Disclosure of Invention
In order to overcome the shortcoming of the prior art, the utility model aims to provide a buckling restrained device that is used for steel circulation to draw and press hysteresis performance test to solve the current buckling restrained device that is used for steel circulation to draw and press hysteresis performance test and applied the restraint to the parallel section of dog bone-shaped test piece, lead to the unsafe technical problem of test result.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a buckling-restrained device for a steel circulating tension-compression hysteresis performance test comprises four buckling-restrained components, a pin bolt and a bolt assembly; the test piece to be tested is a dog-bone-shaped test piece, the upper section and the lower section are wider clamping sections, the middle section is a narrower parallel section, and the joint part of the clamping sections and the parallel section of the upper section and the lower section is a transition arc section; the buckling-restrained component comprises a clamping part and an arc-section protecting wall, wherein a clamping groove is formed in the middle of the clamping part, the position and the size of the clamping groove are matched with those of the clamping section, and the position and the size of the arc-section protecting wall are matched with those of the transition arc section; the four buckling-restrained components are respectively arranged on the left side and the right side of the clamping sections of the upper section and the lower section in pairs, and the buckling-restrained components on the left side and the right side are fastened and connected through the pin bolt and the bolt assembly; the sum of the depths of the clamping grooves on the left side and the right side is equal to the thickness of a piece to be tested.
Preferably, all seted up first round pin bolt hole on the centre gripping section, all seted up second round pin bolt hole on the centre gripping recess, first round pin bolt hole and second round pin bolt hole are used for the installation round pin bolt jointly.
Preferably, the length of the pin bolt is equal to or slightly less than the sum of the thicknesses of the left and right anti-buckling members.
Preferably, a plurality of bolt holes are evenly formed in the two sides of the clamping portion, and the bolt holes in the corresponding positions on the anti-buckling members on the left side and the right side are jointly used for installing the bolt assemblies.
Preferably, two bolt holes are uniformly formed in two sides of the clamping portion respectively.
Preferably, the strength of the buckling-restrained member, the pin bolt and the bolt assembly is greater than that of the piece to be tested.
Preferably, the buckling restrained member is made of a high-strength steel material, such as Q500d.
Preferably, the pin is made of a stainless steel material, such as SUS630.
Preferably, a clamping width of the testing machine is reserved between the bolt assemblies.
Preferably, the bolt assembly includes a bolt, a washer and a fixing nut.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a buckling-restrained device for steel circulation tension-compression hysteresis performance test, buckling-restrained component includes clamping part and segmental arc dado, the centre gripping recess has been seted up at the middle part of clamping part, the position and the size of clamping recess match with the clamping part, segmental arc dado and transition segmental arc position and size phase-match, when the piece to be tested is tested and is tested the loading, can make the effective test section of parallel section be in simple tensile state, it is more fit test actual state, avoided current buckling-restrained device to exert the restraint to the parallel section of dog bone shape test piece, lead to the inaccurate technical problem of test result; simultaneously, the buckling-restrained members on the left side and the right side are connected through the bolt and the bolt assembly in a fastening mode, the depth sum of the clamping grooves on the left side and the right side is equal to the thickness of a piece to be tested, the buckling-restrained members effectively restrain the out-of-plane deformation of the test piece, the device is exquisite and delicate, the operation is simple, the device is suitable for being portable, the test efficiency can be effectively improved, and the cost is reduced.
Furthermore, the length of the pin bolt is equal to or slightly less than the sum of the thicknesses of the left and right anti-buckling components, so that the pin bolt is guaranteed to transmit force fully, and the clamping of the testing machine is not influenced.
Furthermore, the strength of the anti-buckling component, the strength of the pin bolt and the strength of the bolt assembly are all larger than that of the piece to be tested, the anti-buckling device is guaranteed to be high in rigidity and not prone to bending, the anti-buckling device has a very high anti-buckling effect, and the anti-buckling device can be used repeatedly.
Furthermore, the anti-buckling component is made of high-strength steel materials, the tensile strength of the anti-buckling component can reach 770Mpa, the yield strength of the anti-buckling component can reach 500Mpa, the whole structure is light and portable, the operation is simple, and the anti-buckling performance is good.
Furthermore, the pin bolt is made of stainless steel materials, the tensile strength of the pin bolt can be as low as 930MPa, the yield strength of the pin bolt can be 725MPa, and the pin bolt has strong tensile property and can withstand long-time test tensile and compression loading without deformation.
Drawings
Fig. 1 is an exploded view of the overall structure of the present invention;
wherein: 1-a piece to be tested; 2-an anti-buckling member; 3-pin bolt; 4-a bolt assembly; 11-a clamping section; 12-a transition arc segment; 13-parallel segments; 14-a first peg hole; 21-a clamping part; 22-arc segment protection wall; 23-a clamping groove; 24 a second pin hole; 25-bolt hole; 41-bolt; 42-a gasket; 43-fixing the nut.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in further detail with reference to the accompanying drawing 1:
the utility model discloses a buckling restrained device that is used for steel circulation to draw and press hysteresis performance test, including piece 1, four buckling restrained component 2, cotter 3 and bolt assembly 4 of waiting to test.
The test piece 1 is a dog bone-shaped test piece, the upper section and the lower section are wide clamping sections 11, the middle section is a narrow parallel section 13, and the joint part of the clamping sections 11 and the parallel section 13 of the upper section and the lower section is a transition arc section 12; the clamping section 11 is provided with a first pin hole 14.
The buckling-restrained component 2 comprises a clamping part 21 and an arc-section protection wall 22, a clamping groove 23 is formed in the middle of the clamping part 21, two bolt holes 25 are uniformly formed in two sides of the clamping part 21 respectively, a second bolt hole 24 is formed in the clamping groove 23, and the position and the size of the second bolt hole 24 are matched with those of the first bolt hole 14; the arc-shaped protecting wall 22 is connected with the clamping groove 23; the position and the size of the clamping groove 23 are matched with those of the clamping section 11, and the depth of the clamping groove 23 of the single anti-buckling component 2 is half of the thickness of the clamping section 11; the arc segment retaining wall 22 matches the position and size of the transition arc segment 12.
The four buckling-restrained components 2 are respectively arranged on the left side and the right side of the clamping sections 11 of the upper section and the lower section in pairs and are mutually attached.
The thickness of test piece 1 is 6.5mm ~ 10mm, the utility model discloses the compressive strain scope of test can reach 0.5% ~ 4%, and the biggest application strain scope is 4%.
The buckling-restrained component 2 can be made of high-strength steel materials, such as Q500d, the tensile strength can reach 770MPa, and the yield strength can reach 500MPa at the lowest.
The length of the pin bolt 3 is equal to or slightly less than the sum of the thicknesses of the left buckling-restrained component 2 and the right buckling-restrained component 2; the pin bolt 3 can be made of stainless steel materials, such as SUS630, the tensile strength can reach 930MPa at the lowest, the yield strength can reach 725MPa at the lowest, and the pin bolt has strong tensile property.
The bolt assemblies 4 comprise bolts 41, gaskets 42 and fixing nuts 43, and the clamping width of the testing machine is reserved among the bolt assemblies 4.
An operation method of a buckling-restrained device for a steel circulating tension-compression hysteresis performance test comprises the following steps:
and 4, completely clamping the clamping part 21 by a hydraulic chuck of the testing machine, binding the extensometer on the side surface of the piece to be tested 1, and loading.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (10)
1. The buckling-restrained device for the steel circulating tension-compression hysteresis performance test is characterized by comprising four buckling-restrained components (2), a pin bolt (3) and a bolt assembly (4); the buckling-restrained component (2) comprises a clamping part (21) and an arc-section protection wall (22), a clamping groove (23) is formed in the middle of the clamping part (21), the position and the size of the clamping groove (23) are matched with the clamping section (11) of the to-be-tested part (1), and the position and the size of the arc-section protection wall (22) are matched with the position and the size of the transition arc section (12) of the to-be-tested part (1); the four buckling-restrained components (2) are respectively arranged on the left side and the right side of the clamping sections (11) of the upper section and the lower section in pairs, and the buckling-restrained components (2) on the left side and the right side are fixedly connected with the bolt assemblies (4) through bolts (3); the sum of the depths of the clamping grooves (23) on the left side and the right side is consistent with the thickness of the to-be-tested piece (1).
2. The buckling-restrained device for the steel product cyclic tension-compression hysteresis performance test is characterized in that the clamping sections (11) are respectively provided with a first pin bolt hole (14), and the clamping grooves (23) are respectively provided with a corresponding second pin bolt hole (24).
3. The buckling-restrained device for steel material cycle-pull-compression hysteresis performance test as claimed in claim 1, wherein the length of the pin (3) is equal to or less than the sum of the thicknesses of the buckling-restrained members (2) on the left and right sides.
4. The buckling-restrained device for the steel material circulating tension-compression hysteresis performance test is characterized in that a plurality of corresponding bolt holes (25) are uniformly formed in two sides of the clamping portion (21).
5. The buckling-restrained device used for the steel material cyclic tension-compression hysteresis performance test is characterized in that two bolt holes (25) are respectively and uniformly arranged on two sides of the clamping part (21).
6. The buckling-restrained device for a steel material cycle-tension-compression hysteresis performance test as claimed in claim 1, wherein the buckling-restrained members (2), the pin bolts (3) and the bolt assemblies (4) are all stronger than the strength of the piece (1) to be tested.
7. The buckling-restrained device used for the steel material cyclic tension-compression hysteresis performance test is characterized in that the buckling-restrained component (2) is made of high-strength steel material with tensile strength of more than 400 MPA.
8. The buckling restrained device for steel material cycle tension-compression hysteresis performance test as claimed in claim 1, wherein the pin (3) is made of stainless steel material.
9. The buckling-restrained device for steel material cycle tension-compression hysteresis performance test as claimed in claim 1, wherein a tester clamping width is reserved between bolt assemblies (4).
10. The buckling-restrained device for steel material cyclic tension-compression hysteresis performance test as claimed in claim 1, wherein the bolt assembly (4) comprises a bolt (41), a gasket (42) and a fixing nut (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221962058.0U CN217878623U (en) | 2022-07-27 | 2022-07-27 | A buckling restrained device that is used for steel circulation to draw pressure hysteresis performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221962058.0U CN217878623U (en) | 2022-07-27 | 2022-07-27 | A buckling restrained device that is used for steel circulation to draw pressure hysteresis performance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217878623U true CN217878623U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221962058.0U Active CN217878623U (en) | 2022-07-27 | 2022-07-27 | A buckling restrained device that is used for steel circulation to draw pressure hysteresis performance test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217878623U (en) |
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2022
- 2022-07-27 CN CN202221962058.0U patent/CN217878623U/en active Active
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