CN110952509B - Earth and rockfill dam crack repairing structure and repairing method thereof - Google Patents
Earth and rockfill dam crack repairing structure and repairing method thereof Download PDFInfo
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- CN110952509B CN110952509B CN201911332999.9A CN201911332999A CN110952509B CN 110952509 B CN110952509 B CN 110952509B CN 201911332999 A CN201911332999 A CN 201911332999A CN 110952509 B CN110952509 B CN 110952509B
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- 238000000034 method Methods 0.000 title claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 65
- 238000003825 pressing Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 230000008439 repair process Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 239000003351 stiffener Substances 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses an earth and rockfill dam crack repairing structure which comprises a triangular groove arranged at a crack, wherein a plurality of mounting holes are symmetrically formed in the inner walls of two sides of the triangular groove, fixing sleeves are fixed in the mounting holes, a reinforcing rod is arranged between the two symmetrical fixing sleeves, a concrete layer is filled in the triangular groove, the top surface of the concrete layer is lower than the bottom surface of the reinforcing rod, and a sandstone layer is laid above the concrete layer; the fixing sleeve comprises a shell, two first springs are mounted at the bottom of the shell, two pressing sheets are connected to the first springs, and the axis included angle of the two pressing sheets is 30 degrees; the reinforcing rod comprises a rod body, the two ends of the rod body are in threaded connection with end heads, plugs are connected to the end heads in a shaft coupling mode, jacks matched with the pressing sheets in an inserting mode are arranged on the plugs, and sealing rings in compression joint and sealing contact with the shell are fixed to the outer edges of the end heads. The invention can improve the defects of the prior art, improve the integral rigidity of the dam body and ensure the deformation resistance and cracking resistance of the dam body.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to an earth and rockfill dam crack repairing structure and a repairing method thereof.
Background
An earth-rock dam is a water retaining dam body which is common in China. Due to the characteristics of the material of the earth-rock dam, cracks become one of the main quality hidden dangers of the earth-rock dam. In recent years, research on repairing of cracks of earth and rockfill dams has been advanced to a certain extent, and Chinese patent application CN 106638475B discloses a method for repairing cracks of earth and rockfill dams, wherein the cracks of the dams are repaired by grouting the cracks of the dams through high polymers. Although the flexible body formed by the high polymer has certain deformation resistance and can avoid the re-cracking of the repaired part, the rigidity of the whole repaired dam body is reduced due to the poor rigidity of the flexible body, and new cracking is easily generated on other parts after deformation is generated by stress.
Disclosure of Invention
The invention aims to provide an earth and rockfill dam crack repairing structure and a repairing method thereof, which can overcome the defects of the prior art, improve the integral rigidity of a dam body and ensure the deformation resistance and cracking resistance of the dam body.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A crack repairing structure of an earth and rockfill dam comprises a triangular groove arranged at a crack, wherein a plurality of mounting holes are symmetrically formed in the inner walls of two sides of the triangular groove, fixing sleeves are fixed in the mounting holes, a reinforcing rod is arranged between the two symmetrical fixing sleeves, a concrete layer is filled in the triangular groove, the top surface of the concrete layer is lower than the bottom surface of the reinforcing rod, and a sandstone layer is laid above the concrete layer; the fixing sleeve comprises a shell, two first springs are mounted at the bottom of the shell, two pressing sheets are connected to the first springs, and the axis included angle of the two pressing sheets is 30 degrees; the reinforcing rod comprises a rod body, the two ends of the rod body are in threaded connection with end heads, plugs are connected to the end heads in a shaft coupling mode, jacks matched with the pressing sheets in an inserting mode are arranged on the plugs, and sealing rings in compression joint and sealing contact with the shell are fixed to the outer edges of the end heads.
Preferably, the side wall of the shell is provided with a through hole, a self-tapping self-drilling screw penetrates through the through hole to fix the shell and the mounting hole, the outer side surface of the bottom of the mounting hole is provided with a diversion trench, and when a concrete layer is filled, concrete flows into the space between the shell and the mounting hole through the diversion trench.
Preferably, rubber pads are fixed on two sides of the pressing sheet, a clamping groove is formed in the top surface of the pressing sheet, and a metal elastic sheet matched with the clamping groove is fixed in the insertion hole.
Preferably, a flexible base is fixed on the end head, a rotating shaft is installed at the top of the flexible base through a bearing, and a plug is connected to the top of the rotating shaft.
Preferably, the flexible base comprises a rubber main body, an annular groove is formed in the bottom of the rubber main body, and a second spring is installed in the annular groove.
Preferably, carry out the ligature connection through the reinforcing bar between the adjacent body of rod, the contained angle between the adjacent reinforcing bar is 10 ~ 15.
Preferably, a pin is fixed on the bottom surface of the rod body and is in clearance fit with the bottom of the triangular groove.
The method for repairing the earth-rock dam crack repairing structure comprises the following steps:
A. excavating a triangular groove at a crack of the earth and rockfill dam;
B. a plurality of mounting holes are symmetrically formed in the inner walls of the two sides of the triangular groove;
C. a fixing sleeve is fixedly arranged in the mounting hole;
D. the length of the reinforcing rod is adjusted through the rotating end head so as to adapt to the distance between the two symmetrical fixing sleeves at different positions;
E. inserting the end head of one side of the reinforcing rod into the fixing sleeve to enable the insertion hole to be in insertion fit with the pressing sheet, aligning the end head of the other side of the reinforcing rod with the fixing sleeve of the other side of the reinforcing rod, and rotating the end head to enable the insertion hole of the other side of the reinforcing rod to be in insertion fit with the pressing sheet;
F. the end heads at the two sides of the reinforcing rod are rotated again, so that the supporting force between the reinforcing rod and the fixing sleeve is improved;
G. pouring concrete into the triangular groove to form a concrete layer, wherein the top surface of the concrete layer is lower than the bottom surface of the reinforcing rod;
H. and after the concrete layer is completely cured, paving a sandstone layer above the concrete layer.
Preferably, in the step F, the end heads are rotated by using a torque wrench, and the difference between the rotation torques of the two end heads is 10-15 N.m.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: according to the invention, the triangular groove is firstly manufactured at the cracking part, so that later-stage concrete pouring is facilitated, triangular support for the cracking part is realized by utilizing the matching of the triangular groove and the reinforcing rod, the mounting mode of the two ends of the reinforcing rod adopts an elastic splicing mode of splicing the pressing sheet and the jack, and the rigid stress of the connecting part of the reinforcing rod and the dam body can be reduced when the dam body is distorted and deformed while the sufficient support strength is ensured, so that the fracture of the connecting part of the reinforcing rod and the dam body is avoided. The tabletting mechanism adopts a double-tabletting included angle design, and can effectively buffer the radial stress of the reinforcing rod transmitted by the reinforcing rod. The metal shrapnel in the jack cooperates with the preforming crimping, can improve the stability of preforming itself and jack grafting, improves the uniformity of preforming atress deformation when carrying out rotatory reinforcement to the end simultaneously. The invention further designs the flexible base, and the torsion force can be buffered on the reinforcing rod by using the flexible base, so that the instantaneous torsion impact force applied to two ends of the same reinforcing rod is reduced. The buffer structure and the plug-in structure of the end head form two-stage buffering, so that deformation stress is uniformly distributed on the reinforcing rod and the fixing sleeve when the dam body is subjected to micro deformation, full repair of a crack part is realized, the integral torsion resistance of the dam body is greatly improved, and the risk of cracks at other parts of the dam body is reduced. The reinforcing rods are fixedly connected through the reinforcing steel bars, so that the stress uniformity of different reinforcing rods can be improved, and the durability of the whole repair structure is improved. The reinforcing rod is connected with the concrete layer through the round pin post, utilizes the high strength on concrete layer to carry out radial direction to the reinforcing rod and supports the reinforcement to further improve the antitorque ability of reinforcing rod.
Drawings
FIG. 1 is a block diagram of one embodiment of the present invention.
Fig. 2 is a top view of the pouch in accordance with one embodiment of the present invention.
FIG. 3 is a block diagram of a stiffener in accordance with an embodiment of the present invention.
FIG. 4 is a block diagram of a wafer in accordance with one embodiment of the present invention
Figure 5 is a schematic illustration of the manner in which the reinforcement bars are tied in accordance with one embodiment of the present invention.
In the figure: 1. a triangular groove; 2. mounting holes; 3. fixing a sleeve; 4. a reinforcing bar; 5. a concrete layer; 6. a sandstone layer; 7. a first spring; 8. tabletting; 9. a rod body; 10. a tip; 11. a plug; 12. a jack; 13. a seal ring; 14. a housing; 15. a through hole; 16. self-tapping and self-drilling screws; 17. a diversion trench; 18. a rubber pad; 19. a card slot; 20. a metal spring sheet; 21. a flexible base; 22. a bearing; 23. a rotating shaft; 24. a rubber body; 25. an annular groove; 26. a second spring; 27. reinforcing steel bars; 28. a rubber sheet; 29. a pin; 30. a rubber sleeve; 31. a rubber column; 32. a cavity.
Detailed Description
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.
Referring to fig. 1-5, a specific embodiment of the invention comprises a triangular groove 1 arranged at a crack, a plurality of mounting holes 2 are symmetrically arranged on the inner walls of two sides of the triangular groove 1, fixing sleeves 3 are fixed in the mounting holes 2, a reinforcing rod 4 is arranged between the two symmetrical fixing sleeves 3, a concrete layer 5 is filled in the triangular groove 1, the top surface of the concrete layer 5 is lower than the bottom surface of the reinforcing rod 4, and a sand stone layer 6 is laid above the concrete layer 5; the fixing sleeve 3 comprises a shell 14, two first springs 7 are mounted at the bottom of the shell 14, two pressing sheets 8 are connected to the first springs 7, and the axial included angle of the two pressing sheets 8 is 30 degrees; the reinforcing rod 4 comprises a rod body 9, two ends of the rod body 9 are in threaded connection with end heads 10, a plug 11 is connected onto the end heads 10 in a shaft mode, a jack 12 in plug-in fit with the pressing sheet 8 is arranged on the plug 11, and a sealing ring 13 in compression joint and sealing contact with the shell 6 is fixed on the outer edge of each end head 10. Triangle-shaped recess 1 not only is convenient for the concrete placement in later stage, utilize the cooperation of triangle-shaped recess 1 and stiffener 4 moreover, realize supporting the triangle-shaped at fracture position, the mounting means at 4 both ends of stiffener adopts the elasticity of preforming 8 and jack 12 grafting to peg graft the mode, when guaranteeing sufficient support strength, can appear warping when deformation at the dam body, reduce the rigidity atress at stiffener 4 and dam body connection position, avoid the fracture at stiffener 4 and dam body connection position. The tabletting mechanism adopts a double-tabletting included angle design, and can effectively buffer the radial stress of the reinforcing rod transmitted by the reinforcing rod 4. The lateral wall of shell 14 is provided with through-hole 15, and self tapping self-drilling screw 16 passes through-hole 15 and realizes the fixed of shell 14 and mounting hole 2, and the bottom lateral surface of mounting hole 2 is provided with guiding gutter 17, and the concrete flows into between shell 14 and mounting hole 2 through guiding gutter 17 when filling concrete layer 5. Rubber pads 18 are fixed on two sides of the pressing sheet 8, a clamping groove 19 is arranged on the top surface of the pressing sheet 8, and a metal elastic sheet 20 matched with the clamping groove 19 is fixed in the insertion hole 12. The metal shrapnel 20 in the jack 12 is matched with the pressing sheet 8 in a compression joint mode, so that the stability of the pressing sheet 8 and the jack 12 in a plug-in connection mode can be improved, and meanwhile, the consistency of stress deformation of the pressing sheet 8 when the end head 10 is rotationally reinforced is improved. A flexible base 21 is fixed on the end head 10, a rotating shaft 23 is installed on the top of the flexible base 21 through a bearing 22, and the top of the rotating shaft 23 is connected with the plug 11. The flexible base 21 comprises a rubber main body 24, an annular groove 25 is arranged at the bottom of the rubber main body 24, and a second spring 26 is installed in the annular groove 25. The use of the flexible base 21 allows the damping of the torsional forces to be achieved on the reinforcing rod 4 itself, thus reducing the instantaneous torsional impact forces experienced at the two ends of the same reinforcing rod 4. The buffer structure and the plug-in structure of the end 10 form two-stage buffering, so that deformation stress is uniformly distributed on the reinforcing rod 4 and the fixed sleeve 3 when the dam body is slightly deformed, full repair of a split part is realized, the integral torsion resistance of the dam body is greatly improved, and the risk of cracks at other parts of the dam body is reduced. Adjacent rod bodies 9 are bound and connected through steel bars 27, and the included angle between the adjacent steel bars 27 is 15 degrees. Connect fixedly to stiffener 4 through reinforcing bar 27, can improve the homogeneity of different stiffener 4 atresss to improve the durability of whole restoration structure. The bottom surface of the rod body 9 is fixed with a pin 29, and the pin 29 is in clearance fit with the bottom of the triangular groove 1. The reinforcing rod 4 is connected with the concrete layer 5 through the pin 29, and the reinforcing rod 4 is supported and reinforced in the radial direction by utilizing the high strength of the concrete layer 5, so that the torsion resistance of the reinforcing rod 4 is further improved.
The inside rubber sleeve 30 that is provided with of first spring 7, rubber sleeve 30 fix in shell 14, and 8 bottoms of preforming are fixed with rubber column 31, and rubber column 31 activity is pegged graft in rubber sleeve 30, and the length of rubber column 31 is greater than the degree of depth of rubber sleeve 30, and 8 inside cavities 32 that are provided with of preforming, cavity 32 and draw-in groove 19 intercommunication, and it has the sheet rubber 28 to peg graft in the cavity 32, and sheet rubber 28 is connected with rubber column 31. When metal shrapnel 20 inserts in draw-in groove 19, metal shrapnel 20 produces extrusion contact to sheet rubber 28, press down to the time of contacting with shell 14 along with the preforming when column rubber 31, make column rubber 31 be in fixed state, and then promote the support nature of sheet rubber 28, thereby realize the effect that preforming fixed strength increases along with the increase of preforming deformation displacement volume, and column rubber 31 is before contacting with shell 14, its sliding friction with rubber sleeve 30 can realize the gradual increase of the holding power that is provided by column rubber 31, thereby avoid column rubber 31 direct contact shell 14 and the problem of the holding power step change that appears.
The method for repairing the earth-rock dam crack repairing structure comprises the following steps:
A. excavating a triangular groove 1 at a crack of the earth and rockfill dam;
B. a plurality of mounting holes 2 are symmetrically formed in the inner walls of the two sides of the triangular groove 1;
C. a fixed sleeve 3 is fixedly arranged in the mounting hole 2;
D. the length of the reinforcing rod 4 is adjusted through the rotating end head 10 so as to adapt to the distance between two symmetrical fixing sleeves 3 at different positions;
E. inserting the end 10 at one side of the reinforcing rod 4 into the fixing sleeve 3 to enable the insertion hole 12 to be in insertion fit with the pressing sheet 8, aligning the end 10 at the other side of the reinforcing rod with the fixing sleeve 3 at the other side, and rotating the end 10 to enable the insertion hole 12 at the other side of the reinforcing rod to be in insertion fit with the pressing sheet 8;
F. the end heads 10 at the two sides of the reinforcing rod 4 are rotated again, so that the supporting force between the reinforcing rod 4 and the fixed sleeve 3 is improved;
G. concrete is poured into the triangular groove 1 to form a concrete layer 5, and the top surface of the concrete layer 5 is lower than the bottom surface of the reinforcing rod 4;
H. after the concrete layer 5 is completely cured, a sandstone layer 6 is laid above the concrete layer 5.
In the step F, the torque wrench is used for rotating the end heads 10, and the difference between the rotating torques of the two end heads 10 is 10-15 N.m.
The reinforcing bars 4 are bound using the reinforcing bars 27 before the final fixing of the reinforcing bars 4. Firstly, the end 10 on any side is rotated to enable the fixing torque to reach 80% of the preset torque, then the reinforcing steel bars 27 are used for binding, and after binding, the fixing torque at two ends of the adjacent reinforcing steel bars 4 of the reinforcing steel bars to be fixed is corrected. Then, the end head 10 at the other side of the reinforcing rib 4 to be fixed rotates to a preset torque, and finally, the fixing torque of the end head 10 which rotates at the beginning is increased to the preset torque. This reinforcement process may further improve the uniformity of the reinforcement strength between different reinforcement bars 4.
The method can effectively repair the cracked part of the earth-rock dam, and meanwhile, the high-risk part of the earth-rock dam can be repaired preventively by using the repairing method provided by the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides an earth and rockfill dam crack repair structure which characterized in that: the concrete-filled steel plate reinforcing device comprises a triangular groove (1) arranged at a crack, wherein a plurality of mounting holes (2) are symmetrically formed in the inner walls of two sides of the triangular groove (1), fixing sleeves (3) are fixed in the mounting holes (2), a reinforcing rod (4) is arranged between the two symmetrical fixing sleeves (3), a concrete layer (5) is filled in the triangular groove (1), the top surface of the concrete layer (5) is lower than the bottom surface of the reinforcing rod (4), and a sand stone layer (6) is laid above the concrete layer (5); the fixing sleeve (3) comprises a shell (14), two first springs (7) are mounted at the bottom of the shell (14), two pressing sheets (8) are connected to the first springs (7), and the axial included angle of the two pressing sheets (8) is 30 degrees; the reinforcing rod (4) comprises a rod body (9), two ends of the rod body (9) are in threaded connection with end heads (10), a plug (11) is connected onto the end heads (10) in a shaft mode, inserting holes (12) which are matched with the pressing sheets (8) in an inserting mode are formed in the plug (11), and sealing rings (13) which are in crimping and sealing contact with the shell (14) are fixed on the outer side edges of the end heads (10).
2. The earth and rockfill dam crack repair structure of claim 1, wherein: the lateral wall of shell (14) is provided with through-hole (15), and self-tapping self-drilling screw (16) pass through-hole (15) and realize the fixed of shell (14) and mounting hole (2), and the bottom lateral surface of mounting hole (2) is provided with guiding gutter (17), and the concrete flows into between shell (14) and mounting hole (2) through guiding gutter (17) when filling concrete layer (5).
3. The earth and rockfill dam crack repair structure of claim 2, wherein: rubber pads (18) are fixed on two sides of the pressing sheet (8), clamping grooves (19) are formed in the top surface of the pressing sheet (8), and metal elastic sheets (20) matched with the clamping grooves (19) are fixed in the insertion holes (12).
4. The earth and rockfill dam crack repair structure of claim 3, wherein: a flexible base (21) is fixed on the end head (10), a rotating shaft (23) is installed at the top of the flexible base (21) through a bearing (22), and the top of the rotating shaft (23) is connected with a plug (11).
5. The earth and rockfill dam crack repair structure of claim 4, wherein: the flexible base (21) comprises a rubber main body (24), an annular groove (25) is formed in the bottom of the rubber main body (24), and a second spring (26) is installed in the annular groove (25).
6. The earth and rockfill dam crack repair structure of claim 5, wherein: carry out the ligature through reinforcing bar (27) between the adjacent body of rod (9) and connect, the contained angle between adjacent reinforcing bar (27) is 10 ~ 15.
7. The earth and rockfill dam crack repair structure of claim 6, wherein: the bottom surface of the rod body (9) is fixed with a pin (29), and the pin (29) is in clearance fit with the bottom of the triangular groove (1).
8. A method of repairing a crack repair structure of an earth and rockfill dam according to any one of claims 1 to 7, comprising the steps of:
A. excavating a triangular groove (1) at a crack of the earth-rock dam;
B. a plurality of mounting holes (2) are symmetrically formed in the inner walls of the two sides of the triangular groove (1);
C. a fixed sleeve (3) is fixedly arranged in the mounting hole (2);
D. the length of the reinforcing rod (4) is adjusted through the rotary end head (10) so as to adapt to the distance between two symmetrical fixing sleeves (3) at different positions;
E. inserting the end head (10) at one side of the reinforcing rod (4) into the fixing sleeve (3) to enable the insertion hole (12) to be in insertion fit with the pressing sheet (8), aligning the end head (10) at the other side with the fixing sleeve (3) at the other side, and rotating the end head (10) to enable the insertion hole (12) at the other side to be in insertion fit with the pressing sheet (8);
F. the end heads (10) at the two sides of the reinforcing rod (4) are rotated again, so that the supporting force between the reinforcing rod (4) and the fixed sleeve (3) is improved;
G. concrete is poured into the triangular groove (1) to form a concrete layer (5), and the top surface of the concrete layer (5) is lower than the bottom surface of the reinforcing rod (4);
H. and after the concrete layer (5) is completely cured, paving a sandstone layer (6) above the concrete layer (5).
9. The method of claim 8, wherein the method comprises the steps of: and step F, rotating the end heads (10) by using a torque wrench, wherein the difference between the rotating torques of the two end heads (10) is 10-15 N.m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911332999.9A CN110952509B (en) | 2019-12-23 | 2019-12-23 | Earth and rockfill dam crack repairing structure and repairing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911332999.9A CN110952509B (en) | 2019-12-23 | 2019-12-23 | Earth and rockfill dam crack repairing structure and repairing method thereof |
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| CN110952509B true CN110952509B (en) | 2020-10-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3057043B2 (en) * | 1997-11-28 | 2000-06-26 | 本州四国連絡橋公団 | Grout stop |
| CN1247857C (en) * | 2002-12-31 | 2006-03-29 | 中国水利水电科学研究院结构材料研究所 | Surface plate crack-resisting designing method of surface plate rock-fill dam |
| CN101684670B (en) * | 2008-09-23 | 2012-02-01 | 曹学仁 | Mass concrete temperature stress releasing device and novel technology for guiding crack setting |
| CN204570618U (en) * | 2015-04-17 | 2015-08-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Prevent structure of rock-fill dam crest highway fracture |
| CN207973957U (en) * | 2018-01-15 | 2018-10-16 | 南通鸿基市政工程有限公司 | Impaired bitumen concrete road surface cracks repair structure |
| CN208415063U (en) * | 2018-06-05 | 2019-01-22 | 李莉 | A kind of road and bridge crack ruggedized construction |
| CN209128902U (en) * | 2018-11-06 | 2019-07-19 | 西南林业大学 | A kind of deck crack bracing means |
| CN209652775U (en) * | 2018-12-24 | 2019-11-19 | 刘志伟 | A kind of road and bridge crack bracing means |
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Inventor after: Zhao Yuxia Inventor after: Zhao Zhonghua Inventor after: Li Jiada Inventor after: Wang Liqun Inventor after: Liu Hongyan Inventor after: Li Yonglei Inventor after: Zhao Caijie Inventor after: Liu Kangqi Inventor after: Chen Wu Inventor after: Zhou Ming Inventor after: Xu Hongwei Inventor after: Zhao Lidong Inventor before: Zhao Yuxia Inventor before: Zhao Zhonghua Inventor before: Li Jiada Inventor before: Wang Liqun Inventor before: Liu Hongyan Inventor before: Li Yonglei Inventor before: Zhao Caijie Inventor before: Liu Kangqi Inventor before: Chen Wu Inventor before: Zhou Ming Inventor before: Xu Hongwei Inventor before: Zhao Lidong |
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Granted publication date: 20201002 |