CN212340885U - Test device for construction site steel bar grouting sleeve connecting joint - Google Patents
Test device for construction site steel bar grouting sleeve connecting joint Download PDFInfo
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- CN212340885U CN212340885U CN202021108100.3U CN202021108100U CN212340885U CN 212340885 U CN212340885 U CN 212340885U CN 202021108100 U CN202021108100 U CN 202021108100U CN 212340885 U CN212340885 U CN 212340885U
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Abstract
The utility model provides a test device for a steel bar grouting sleeve connecting joint on a construction site, which comprises a test frame and a loading device arranged on the test frame, wherein a rigidity block A and a rigidity block B are arranged on the test frame; the rigidity block A and the rigidity block B are provided with a cut through which the front and the back surfaces are communicated and a pore channel through which the interior is longitudinally communicated; one end of a sleeve connecting joint test piece is fixed in the notch of the rigidity block A, and the other end of the sleeve connecting joint test piece is fixed in the notch of the rigidity block B; the loading device comprises a loading frame, a loading plate, a hydraulic jack A and a hydraulic jack B, wherein the loading plate is fixed on the loading frame and is positioned between the hydraulic jack A and the hydraulic jack B; the utility model discloses can accomplish the centering and biasing unidirectional tension, the high stress of "sleeve grout attach fitting test piece in the relevant standard draw repeatedly press, the big deformation draws repeatedly the intensity of pressing and the proof test who warp".
Description
Technical Field
The utility model relates to an assembled reinforcing bar construction technical field, concretely relates to reinforcing bar grout muffjoint job site test device.
Background
The RC structure adopts a prefabricated building mode, has the advantages of easily-guaranteed component quality, greatly-reduced on-site construction labor force, high construction speed, short construction period, energy conservation, environmental protection and the like, accords with the development direction of building industrialization, and is a building mode of buildings, municipal bridges and other buildings which are widely popularized in China at present.
The prefabricated construction mode is that the structural members such as beams and columns are prefabricated separately in a prefabrication factory, transported to a construction site, hoisted and connected to form the structure. The connection quality of the longitudinal steel bars among the prefabricated components directly influences the seismic performance of the structure, and is the key of the construction mode in various technologies.
At present, the connection of longitudinal steel bars among prefabricated components in prefabricated assembly type building engineering in China mainly adopts the grouting sleeve connection method invented by Yee and the like in the 60 th century, and the industrial standard is formed. In order to ensure the quality of the connection of the steel bar grouting sleeves on the construction site, the grouting sleeves for steel bar connection (JG/T398-2019) which is recommended by the construction industry standard and the grouting application technical specification for steel bar sleeve grouting connection (JGJ 355-2015) which is recommended by the construction industry standard are subjected to relevant regulations of joint type inspection tests, but the execution difficulty is high due to the fact that relevant test equipment and test methods are lacked in the construction site.
The utility model provides a simple and convenient, experimental test device of easy job site reinforcing bar grout muffjoint.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a reinforcing bar grout muffjoint job site test device can accomplish the centering and biasing unidirectional tension, the high stress of the "muffjoint grout joint test piece in the relevant standard and draw repeatedly and press, the big deformation draws repeatedly intensity of pressing and the inspection test of deformation".
In order to solve the technical problem, the utility model adopts the technical scheme that:
the test device for the construction site steel bar grouting sleeve connecting joint comprises a test frame and a loading device arranged on the test frame, and is characterized in that a rigidity block A and a rigidity block B are arranged on the test frame, the rigidity block A is arranged at one end of the test frame, and the rigidity block B is connected to the other end of the test frame through the loading device; the rigidity block A and the rigidity block B are provided with a cut through which the front and the back surfaces are communicated and a pore channel through which the interior is longitudinally communicated; one end of a sleeve connecting joint test piece is fixed in the notch of the rigidity block A, and the other end of the sleeve connecting joint test piece is fixed in the notch of the rigidity block B;
the loading device comprises a loading frame, a loading plate, a hydraulic jack A and a hydraulic jack B, wherein the loading plate is fixed on the loading frame and is positioned between the hydraulic jack A and the hydraulic jack B;
and the reinforcing steel bar at one end of the sleeve joint test piece is fixed on the test frame, and the reinforcing steel bar at the other end of the sleeve joint test piece is fixed on the loading frame.
The loading frame comprises a loading rod A, two loading rods B and a loading rod C, the loading plate is fixed on the loading rod C, an internal thread sleeve is arranged on the loading rod A, and a steel bar of a sleeve joint test piece is fixed on the loading rod A through the internal thread sleeve.
The positions of the rigidity blocks A and B, which are provided with the notches, are vertically penetrated by bolt holes for connecting shape-limiting bolts.
The test rack comprises four upright posts, four cross rods, four longitudinal rods, two inner cross rods, two support plates, a transverse plate A and a transverse plate B; the four upright posts, the four cross rods and the four longitudinal rods are connected with one another to form a spatial rectangular frame structure; two ends of the two inner cross rods are respectively fixed on the two longitudinal rods at the lower part of the rectangular frame structure; the two support rods are respectively vertically fixed in the middle of the two inner cross rods; the two supporting plates are respectively fixed at the top ends of the two supporting rods; two ends of the transverse plate A and the transverse plate B are respectively fixed on the two upright rods at the left end and the right end of the spatial rectangular frame structure; and the middle part of the transverse plate A is provided with a hole matched with the steel bar.
And the same side of the sleeve joint test piece is respectively welded with a gauge length rod which is perpendicular to the central line of the steel bar and is parallel to each other.
A test method for installing a sleeve joint test piece is characterized by comprising the following steps:
installing a sleeve connecting joint test piece:
the steel bar on the left side of the connecting joint test piece penetrates through the hole in the middle of the transverse plate A after penetrating through the inner hole of the rigidity block A, and is tightly connected with the transverse plate A through the inner nut and the outer nut; the steel bar on the right side of the connecting joint test piece penetrates into the inner pore channel of the rigidity block B, and the right end of the connecting joint test piece is connected with the internal thread sleeve;
loading is carried out on the sleeve joint test piece through a loading device, and the method comprises an axial tensile test and an axial repeated tension and compression test:
axial tensile test:
loosening an oil stop valve of the hydraulic jack B, tightening the oil stop valve of the hydraulic jack A, performing graded loading by tightening the hydraulic jack A, and measuring the axial deformation of the connecting joint test piece under each grade of load by measuring the distance between two gauge length rods;
and (3) axial repeated tension and compression test:
loosening an oil stop valve of the hydraulic jack B, tightening the oil stop valve of the hydraulic jack A, performing primary tensile loading by tightening the hydraulic jack A, and measuring the axial deformation of the connecting joint test piece under the load of the stage by measuring the distance between the two gauge length rods;
and loosening the oil stop valve of the hydraulic jack A, screwing the oil stop valve of the hydraulic jack B, carrying out primary compression loading by tightening the hydraulic jack B, and measuring the axial deformation of the connecting joint test piece under the load at the stage by measuring the distance between the two gauge length rods.
The utility model has the advantages that:
the utility model provides a simple and convenient, experimental test device of easy job site reinforcing bar grout muffjoint connection and test method thereof can accomplish the centering and biasing unidirectional tension, the high stress of "muffjoint grout joint connection test piece in the relevant standard and draw repeatedly and press, the big deformation draws repeatedly intensity of pressing and deformation" test experiment.
Drawings
Fig. 1 is a schematic view of the overall structure of the loading device of the present invention.
Fig. 2 is a schematic top view of the whole loading device of the present invention.
Fig. 3 is a schematic top view of the connection between the reinforcing bars and the loading rod (a).
Fig. 4 is a right-side view schematic diagram of the connection between the reinforcing bar and the loading rod (a).
Fig. 5 is a schematic top view of the stiffness block of the present invention.
Fig. 6 is a front view of the stiffness block of the present invention.
Figure 7 is a block of the present invention1-1A schematic cross-sectional view.
In the upper diagram: 1. erecting a rod; 2. A cross bar; 3. a longitudinal bar; 4. an inner cross bar; 5. a support bar; 6. a support plate; 7. a transverse plate A; 8. a transverse plate B; 9. a stiffness block A; 10. a stiffness block B; 11. a shape-limiting bolt; 12. cutting; 13. a gauge length rod; 14. grouting a sleeve; 15. reinforcing steel bars; 16. a loading rod A; 17. a loading rod B; 18. a loading lever C; 19. a loading plate; 20. a hydraulic jack A; 21. 22, a nut; 23. a duct; 24. an internally threaded sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-7, a steel bar grouting sleeve joint connects job site test device, its characterized in that specifically includes: the device comprises four vertical rods 1, four cross rods 2, four longitudinal rods 3, two inner cross rods 4, two support rods 5, two supporting plates 6, a transverse plate A7, a transverse plate B8, a rigidity block A9, a rigidity block B10, a connection joint test piece consisting of a grouting sleeve 14 and a steel bar 15, a loading rod A16, two loading rods B17, a loading rod C18, a loading plate 19, a hydraulic jack A20 and a hydraulic jack B21.
The four upright posts 1, the four cross rods 2 and the four longitudinal rods 3 are connected with one another to form a spatial rectangular frame structure; two ends of the two inner cross rods 4 are respectively fixed on the two longitudinal rods 3 at the lower part of the rectangular frame structure; the two support rods 5 are respectively vertically fixed in the middle of the two inner cross rods 4; the two supporting plates 6 are respectively fixed at the top ends of the two supporting rods 5; two ends of the transverse plate A7 and the transverse plate B8 are respectively fixed on the two upright posts 1 at the left end and the right end of the space rectangular frame structure; the middle part of the transverse plate A7 is provided with a hole matched with the steel bar 15.
The rigidity blocks A9 and B10 are provided with a notch 12 with a through front surface and a through hole 23 with a through inner part along the longitudinal direction and a bolt hole with a left end part vertically penetrating and matched with the shape-limiting bolt 11; the diameter of the duct 23 is slightly larger than the outer diameter of the internally threaded sleeve.
The end parts of the reinforcing steel bars on the two sides of the connecting joint test piece are both provided with threads, and a parallel gauge length rod 13 perpendicular to the central line of the reinforcing steel bars is welded on the same side of the connecting joint test piece.
The loading rod A16, the two loading rods B17 and the loading rod C18 are connected end to end through bolts to form a frame structure; the middle of the loading rod A16 is provided with an internal thread sleeve 24 which is vertical to the loading rod A16, and the thread of the internal thread sleeve is matched with the thread at the end part of the right steel bar of the connecting joint test piece; the middle part of the loading rod C18 is provided with a vertical loading plate 19.
The steel bars on the left side of the connecting joint test piece penetrate through the hole 23 in the rigidity block A9, penetrate through the hole in the middle of the transverse plate A7 and are tightly connected with the transverse plate A7 through the inner nut and the outer nut 22; a space matched with the deformation of the steel bars is reserved between the right end of the rigidity block A9 and the left end of the grouting sleeve 14; the steel bar on the right side of the connecting joint test piece penetrates into the inner pore channel 23 of the rigidity block B10, and the right end of the connecting joint test piece is connected with the internal thread sleeve 24; the bottom surface of the rigidity block B10 is arranged on the supporting plate 6 at the left side of the device.
The hydraulic jack A20 is arranged on the supporting plate 6 on the right side of the device, the bottom surface of the hydraulic jack A20 is propped against the right end of the rigidity block B10, and the loading end of the hydraulic jack A is propped against the left surface of the loading plate 19; the loading end of the hydraulic jack B21 is supported against the right surface of the loading plate 19, and the bottom surface is fixed on the transverse plate B8.
A construction site test method for a steel bar grouting sleeve joint is implemented according to the following steps:
step 1: the four upright posts 1, the four cross rods 2 and the four longitudinal rods 3 are connected with one another to form a spatial rectangular frame structure; two ends of the two inner cross rods 4 are respectively fixed on the two longitudinal rods 3 at the lower part of the rectangular frame structure; the two support rods 5 are respectively vertically fixed in the middle of the two inner cross rods 4; the two supporting plates 6 are respectively fixed at the top ends of the two supporting rods 5; and two ends of the transverse plate B8 are respectively fixed on the two vertical rods 1 at the right end of the space rectangular frame structure.
Step 2: and selecting a transverse plate A7 with a hole in the upper middle position matched with the diameter of the steel bar of the connecting joint test piece, and fixing the transverse plate A7 on the two vertical rods 1 at the left end of the space rectangular frame structure.
And step 3: and selecting a rigidity block A9 and a rigidity block B10, wherein the inner diameter of the inner pore canal 23 is matched with the diameter of the connecting joint test piece steel bar 15 and the outer diameter of the internal thread sleeve 24 respectively.
And 4, step 4: the end parts of the steel bars on the two sides of the connecting joint test piece are provided with threads, the same side is respectively welded with a parallel gauge length rod 13 perpendicular to the center line of the steel bars, and then the loading rod A16 is screwed and connected with the end part of the steel bar on the right side of the connecting joint test piece through the internal thread sleeve 24 in the middle of the loading rod A16.
And 5: and (3) passing the reinforcing steel bars on the left side of the connecting joint test piece through the inner hole channel 23 of the rigidity block A9, then passing the reinforcing steel bars through the hole in the middle of the transverse plate A7, tightly connecting the reinforcing steel bars with the transverse plate A7 through the inner nut and the outer nut 22, and then screwing the limiting bolt 11.
Step 6: and (3) penetrating a rigidity block B10 on the steel bar on the right side of the connecting joint test piece, and screwing a limiting bolt 11. The bottom surface of the rigidity block B10 is arranged on the supporting plate 6 at the left side of the device.
And 7: the loading rod A16, the two loading rods B17 and the loading rod C18 are connected end to end through bolts to form a frame structure.
And 8: the hydraulic jack A20 is placed on the supporting plate 6 on the right side of the device, the bottom surface of the hydraulic jack A20 is propped against the right end of the rigidity block B10, and the loading end of the hydraulic jack A is propped against the left surface of the loading plate 19.
And step 9: the loading end of the hydraulic jack B21 is supported against the right surface of the loading plate 19, and the bottom surface is fixed on the transverse plate B8.
Axial tensile test:
step 10: and loosening the oil stop valve of the hydraulic jack B21, screwing the oil stop valve of the hydraulic jack A20, carrying out graded loading by tightening the hydraulic jack A20, and measuring the axial deformation of the connection joint test piece under each grade of load by measuring the distance between the two gauge length rods 13.
Axial repeated tension and compression test
Step 10: and loosening the oil stop valve of the hydraulic jack B21, tightening the oil stop valve of the hydraulic jack A20, performing primary tensile loading by tightening the hydraulic jack A20, and measuring the distance between the two gauge length rods 13 to determine the axial deformation of the connection joint test piece under the load at the level.
Step 11: and loosening the oil stop valve of the hydraulic jack A20, tightening the oil stop valve of the hydraulic jack B21, carrying out primary compression loading by tightening the hydraulic jack B21, and measuring the axial deformation of the connection joint test piece under the load by measuring the distance between the two gauge length rods 13.
Step 12: and (5) repeating the steps 10 and 11 to finish all the tension and compression loading.
Claims (5)
1. A test device for a construction site steel bar grouting sleeve connecting joint comprises a test frame and a loading device arranged on the test frame, and is characterized in that a rigidity block A (9) and a rigidity block B (10) are arranged on the test frame, the rigidity block A (9) is arranged at one end of the test frame, and the rigidity block B (10) is connected to the other end of the test frame through the loading device; the rigidity block A (9) and the rigidity block B (10) are provided with a cut (12) with a through front surface and a through back surface and a pore canal (23) with a through inner part along the longitudinal direction; one end of a sleeve joint test piece is fixed in the notch (12) of the rigidity block A (9), and the other end of the sleeve joint test piece is fixed in the notch (12) of the rigidity block B (10);
the loading device comprises a loading frame, a loading plate (19), a hydraulic jack A (20) and a hydraulic jack B (21), wherein the loading plate (19) is fixed on the loading frame, and the loading plate (19) is positioned between the hydraulic jack A (20) and the hydraulic jack B (21);
and the reinforcing steel bar at one end of the sleeve joint test piece is fixed on the test frame, and the reinforcing steel bar at the other end of the sleeve joint test piece is fixed on the loading frame.
2. The testing device according to claim 1, characterized in that the loading frame comprises a loading rod A (16), two loading rods B (17) and a loading rod C (18), the loading plate (19) is fixed on the loading rod C (18), an internally threaded sleeve (24) is arranged on the loading rod A (16), and the steel bars of the sleeve joint test piece are fixed on the loading rod A (16) through the internally threaded sleeve (24).
3. The test device according to claim 1, wherein the positions of the rigidity blocks A (9) and B (10) where the notches (12) are arranged are vertically penetrated by bolt holes for connecting shape-limiting bolts (11).
4. The test device according to claim 1, wherein the test frame comprises four upright posts (1), four cross rods (2), four longitudinal rods (3), two inner cross rods (4), two support rods (5), two support plates (6), a transverse plate A (7) and a transverse plate B (8); the four upright posts (1), the four cross rods (2) and the four longitudinal rods (3) are connected with each other to form a spatial rectangular frame structure; two ends of the two inner cross rods (4) are respectively fixed on the two longitudinal rods (3) at the lower part of the rectangular frame structure; the two support rods (5) are respectively vertically fixed in the middle of the two inner cross rods (4); the two supporting plates (6) are respectively fixed at the top ends of the two supporting rods (5); two ends of the transverse plate A (7) and the transverse plate B (8) are respectively fixed on the two upright posts (1) at the left end and the right end of the spatial rectangular frame structure; the middle part of the transverse plate A (7) is provided with a hole matched with the steel bar (15).
5. The test device according to claim 1, characterized in that the test pieces of the muff coupling joint are welded with a gauge length rod (13) perpendicular to the center line of the steel bar and parallel to each other on the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021108100.3U CN212340885U (en) | 2020-06-16 | 2020-06-16 | Test device for construction site steel bar grouting sleeve connecting joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021108100.3U CN212340885U (en) | 2020-06-16 | 2020-06-16 | Test device for construction site steel bar grouting sleeve connecting joint |
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| Publication Number | Publication Date |
|---|---|
| CN212340885U true CN212340885U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021108100.3U Active CN212340885U (en) | 2020-06-16 | 2020-06-16 | Test device for construction site steel bar grouting sleeve connecting joint |
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| CN (1) | CN212340885U (en) |
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- 2020-06-16 CN CN202021108100.3U patent/CN212340885U/en active Active
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