CN204789136U - Survey concrete tensile strength's test fixture - Google Patents
Survey concrete tensile strength's test fixture Download PDFInfo
- Publication number
- CN204789136U CN204789136U CN201520430710.8U CN201520430710U CN204789136U CN 204789136 U CN204789136 U CN 204789136U CN 201520430710 U CN201520430710 U CN 201520430710U CN 204789136 U CN204789136 U CN 204789136U
- Authority
- CN
- China
- Prior art keywords
- top board
- hemisphere
- ambulatory splint
- test fixture
- hemisphere face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 239000004567 concrete Substances 0.000 title claims abstract description 29
- 238000009864 tensile test Methods 0.000 abstract description 4
- 238000013522 software testing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a survey concrete tensile strength's test fixture, including the stationary jaw for the backup pad of centre gripping concrete sample, and hang the pull rod, the stationary jaw includes the roof and is located the curb plate of roof one side, it connects to hang the pull rod on the roof, its characterized in that: the opposite side of roof be provided with with the movable splint that the curb plate is relative, the activity splint with the roof passes through limit screw and forms the connection that the interval can be transferred, the backup pad sets up both ends between curb plate and the activity splint. Through setting up and stationary jaw interval adjustable activity splint, to a great extent has solved the unable centre gripping phenomenon that the tensile test piece irregularly caused, and hang two hemisphere faces contact that pull rod bottom and hemisphere suspends the ware in midair and make the loading line and drawn the test piece axial lead coincident as far as possible to reduce the control error, improve efficiency of software testing, can extensively be applicable to common concrete and the test of compensation shrink concrete tensile strength.
Description
Technical field
The utility model relates to a kind of fixture, especially a kind of test fixture measuring concrete tensile property.
Background technology
Concrete tensile property is one of its basic mechanical character, and it is an important component part of research failure criterion and failure mechanism, directly affects again Resistance of Reinforced Concrete Structures fragility energy.The test directly measuring concrete axle center tensile property at present has certain difficulty, needs solution two hang-up: one is to make load action line overlap as far as possible with tension test specimen axis; Two is test specimen should be made to destroy occur in tensile region as far as possible, reduces test value fluctuation.
The test fixture of existing concrete tensile property, as application number a kind of high performance concrete tensile test fixture disclosed in the Chinese patent of 201220228210.2, comprise one for being arranged on the connecting link on universal testing machine, one end of connecting link is provided with clamping part, clamping part offers the draw-in groove for clamping dumbbell shaped standard sample termination; And for example application number a kind of concrete tension test fixture disclosed in the Chinese patent of 201320668091.7, comprise linking arm, fixed mount, grip block, bolt, fixed mount side is fixedly arranged on linking arm, fixed mount opposite side is arranged with two pieces of fixed heads in parallel, and grip block is two pieces and is movably set between two pieces of fixed heads by bolt.
Above-mentioned test fixture, is fixing or two sides on four sides and fixes, be difficult to the microdilatancy test specimen that applicable expansive concrete causes; In addition be planar support contact substantially, be unfavorable for the adjustment of axial line.Therefore, the poor efficiency when defect of existing fixture causes the performance test of concrete tension and highly implement difficulty, and test value fluctuation is also larger.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned prior art Problems existing, provides a kind of test fixture improving the mensuration concrete tensile property of test specimen fit.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of test fixture measuring concrete tensile property, comprise strap, for clamping the back up pad of concrete sample, and suspending bars, described strap comprises top board and is positioned at the side plate of described top board side, described suspending bars is connected on described top board, it is characterized in that: the opposite side of described top board is provided with the ambulatory splint relative with described side plate, described ambulatory splint and described top board form by Limit screw the connection that spacing can adjust, described back up pad is arranged on the two ends between described side plate and ambulatory splint.
Further, ambulatory splint and the preferred connected mode of strap are, described top board offers threaded hole on the side arranging described ambulatory splint, described Limit screw through described ambulatory splint and threaded hole, described Limit screw is arranged nut and by relative with top board for described ambulatory splint fixing.
Conveniently and stably fixed support plate, the bottom of described back up pad is equipped with set bolt, and the two ends of described set bolt are each passed through described side plate and ambulatory splint, thus described back up pad are fixed between described side plate and ambulatory splint.
In order to improve the registration of load action line and test specimen axial line, reduce test error, described top board offers the mounting hole passed for described suspending bars, the bottom of described suspending bars has the first hemisphere face upwards arched upward, and the surface that described mounting hole contacts with described first hemisphere face forms the second hemisphere face mated with the first hemisphere face; The described suspending bars part be positioned at above top board is provided with hemisphere suspender and travel(l)ing rest, described travel(l)ing rest to be slidably arranged on described suspending bars and to support described hemisphere suspender, the bottom of described hemisphere suspender has the 3rd hemisphere face arched upward downwards, and the surface that described travel(l)ing rest contacts with described 3rd hemisphere face forms the 4th hemisphere face mated with the 3rd hemisphere face.
Further, suspending bars and the preferred connected mode of fixed support are that the periphery of the part that described suspending bars is positioned at above top board is provided with nut sheet, buffer spring and quill, thus described suspending bars is connected with described top board.
Compared with prior art, the utility model has the advantage of: by arranging and the adjustable ambulatory splint of strap spacing, solve to a great extent tensile test piece irregular cause cannot clamp phenomenon; And suspending bars bottom contacts with two hemisphere faces of hemisphere suspender and makes load action line overlap as far as possible with tension test specimen axial line, thus reduce test error, improve testing efficiency, normal concrete can be widely used in and expansive concrete tensile property is tested.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of test fixture of the present utility model;
Fig. 2 is the decomposition texture schematic diagram of test fixture of the present utility model;
Fig. 3 is the schematic diagram of the strap of test fixture of the present utility model;
Fig. 4 is the schematic diagram of the travel(l)ing rest of test fixture of the present utility model;
Fig. 5 is the using state schematic diagram of test fixture of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
See Fig. 1 and Fig. 2, a kind of test fixture measuring concrete tensile property, comprises strap 1, ambulatory splint 2 and suspending bars 3.
Strap 1 comprises top board 11 and is positioned at the side plate 12 of top board 11 side.Ambulatory splint 2 is arranged on the opposite side of top board 11, relative with side plate 12.Top board 11 offers threaded hole 111 on the side arranging ambulatory splint 2, utilize Limit screw 21 through ambulatory splint 2 and threaded hole 111, and it is by nut 22, ambulatory splint 2 is relative fixing with the top board 11 of strap 1, both the installation and removal of ambulatory splint 2 be convenient to, also the spacing between ambulatory splint 2 and strap 1 can freely be regulated, thus can the concrete tensile test test specimen of adaptive irregular or microdilatancy.
Two ends between the side plate 12 of strap 1 and ambulatory splint 2 are respectively equipped with the back up pad 4 of clamping test pieces, the bottom of back up pad 4 is equipped with set bolt 41, the two ends of set bolt 41 are each passed through side plate 12 and ambulatory splint 2, thus back up pad 4 are fixed between the side plate 12 of strap 1 and ambulatory splint 2.
Top board 11 offers mounting hole 112, for passing for suspending bars 3, the periphery of suspending bars 3 is provided with external thread.The periphery that suspending bars 3 is positioned at the part above top board 11 is provided with nut sheet 31, buffer spring 32 and quill 33 from top to bottom successively, thus is connected with top board 11.Position suspending bars 3 is positioned at above nut sheet 31 is also arranged with hemisphere suspender 34, and the inner circumferential of hemisphere suspender 34 is provided with internal thread, and the periphery of suspending bars 3 is threaded with the inner circumferential of hemisphere suspender 34.Position suspending bars 3 is positioned at below hemisphere suspender 34 is provided with travel(l)ing rest 35 slidably, and for playing support fixation to hemisphere suspender 34, travel(l)ing rest 35 can be free to slide on suspending bars 3.
See Fig. 2, Fig. 3 and Fig. 4, the bottom of suspending bars 3 has the first hemisphere face 36 upwards arched upward, and the bottom of hemisphere suspender 34 has the 3rd hemisphere face 37 arched upward downwards, forms the suspending bars 3 that two ends are two hemisphere thus.Mounting hole 112 on the top board 11 of strap 1, its surface contacted with the first hemisphere face 36 of suspending bars 3 forms the second hemisphere face 113 mated with the first hemisphere face 36; And travel(l)ing rest 35, its surface contacted with the 3rd hemisphere face 37 of hemisphere suspender 34 forms the 4th hemisphere face 351 mated with the 3rd hemisphere face 37.
See Fig. 5, during test, the end of concrete sample 5 is inserted between two back up pads 4, regulate the spacing between ambulatory splint 2 and strap 1, thus concrete sample 5 is clamped, and regulate the angle of suspending bars 3, load action line and concrete sample 5 axial line registration can be made to improve.
Claims (5)
1. one kind measures the test fixture of concrete tensile property, comprise strap (1), for clamping the back up pad (4) of concrete sample (5), and suspending bars (3), described strap (1) comprises top board (11) and is positioned at the side plate (12) of described top board (11) side, described suspending bars (3) is connected on described top board (11), it is characterized in that: the opposite side of described top board (11) is provided with the ambulatory splint (2) relative with described side plate (12), described ambulatory splint (2) and described top board (11) form by Limit screw (21) connection that spacing can adjust, described back up pad (4) is arranged on the two ends between described side plate (12) and ambulatory splint (2).
2. the test fixture measuring concrete tensile property as claimed in claim 1, it is characterized in that: described top board (11) offers threaded hole (111) on the side arranging described ambulatory splint (2), described Limit screw (21), through described ambulatory splint (2) and threaded hole (111), described Limit screw (21) is arranged nut (22) and described ambulatory splint (2) is relative fixing with top board (11).
3. the test fixture measuring concrete tensile property as claimed in claim 2, it is characterized in that: the bottom of described back up pad (4) is equipped with set bolt (41), the two ends of described set bolt (41) are each passed through described side plate (12) and ambulatory splint (2), thus described back up pad (4) are fixed between described side plate (12) and ambulatory splint (2).
4. the test fixture of the mensuration concrete tensile property according to any one of claims 1 to 3, it is characterized in that: described top board (11) offers the mounting hole (112) passed for described suspending bars (3), the bottom of described suspending bars (3) has the first hemisphere face (36) upwards arched upward, and the surface that described mounting hole (112) contacts with described first hemisphere face (36) forms the second hemisphere face (113) mated with the first hemisphere face (36); The part that described suspending bars (3) is positioned at top board (11) top is provided with hemisphere suspender (34) and travel(l)ing rest (35), described travel(l)ing rest (35) is slidably arranged in described suspending bars (3) and goes up and support described hemisphere suspender (34), the bottom of described hemisphere suspender (34) has the 3rd hemisphere face (37) arched upward downwards, and the surface that described travel(l)ing rest (35) contacts with described 3rd hemisphere face (37) forms the 4th hemisphere face (351) mated with the 3rd hemisphere face (37).
5. the test fixture of the mensuration concrete tensile property according to any one of claims 1 to 3, it is characterized in that: the periphery that described suspending bars (3) is positioned at the part of top board (11) top is provided with nut sheet (31), buffer spring (32) and quill (33), thus described suspending bars (3) is connected with described top board (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520430710.8U CN204789136U (en) | 2015-06-19 | 2015-06-19 | Survey concrete tensile strength's test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520430710.8U CN204789136U (en) | 2015-06-19 | 2015-06-19 | Survey concrete tensile strength's test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204789136U true CN204789136U (en) | 2015-11-18 |
Family
ID=54529155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520430710.8U Expired - Fee Related CN204789136U (en) | 2015-06-19 | 2015-06-19 | Survey concrete tensile strength's test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204789136U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2605386C1 (en) * | 2015-12-21 | 2016-12-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) | Reinforcement test bench |
| CN108287110A (en) * | 2018-02-05 | 2018-07-17 | 河北工业大学 | The sample pull head and its installation auxiliary device of the lower rock tension test of confining pressure effect |
| CN111289356A (en) * | 2020-03-06 | 2020-06-16 | 同济大学 | Test fixture for concrete axial tension force and use method thereof |
| CN111896397A (en) * | 2020-07-21 | 2020-11-06 | 蜂巢能源科技有限公司 | Die set expansion fatigue strength testing tool and die set fatigue strength testing method |
-
2015
- 2015-06-19 CN CN201520430710.8U patent/CN204789136U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2605386C1 (en) * | 2015-12-21 | 2016-12-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) | Reinforcement test bench |
| CN108287110A (en) * | 2018-02-05 | 2018-07-17 | 河北工业大学 | The sample pull head and its installation auxiliary device of the lower rock tension test of confining pressure effect |
| CN111289356A (en) * | 2020-03-06 | 2020-06-16 | 同济大学 | Test fixture for concrete axial tension force and use method thereof |
| CN111896397A (en) * | 2020-07-21 | 2020-11-06 | 蜂巢能源科技有限公司 | Die set expansion fatigue strength testing tool and die set fatigue strength testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |