CN215629897U - Prevent stop device and construction structures of steel reinforcement cage come-up - Google Patents
Prevent stop device and construction structures of steel reinforcement cage come-up Download PDFInfo
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- CN215629897U CN215629897U CN202122013799.6U CN202122013799U CN215629897U CN 215629897 U CN215629897 U CN 215629897U CN 202122013799 U CN202122013799 U CN 202122013799U CN 215629897 U CN215629897 U CN 215629897U
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Abstract
The utility model relates to a blocking device for preventing a reinforcement cage from floating upwards and a construction structure, wherein the construction structure comprises a pile hole vertically drilled in the ground, the reinforcement cage is arranged in the pile hole, the blocking device comprises a pile casing, the pile casing is pre-embedded in the position where the pile hole is drilled, the position of the pile casing close to the upper end is provided with two openings, and the two openings are positioned on the same axial section of the pile casing; a support rod is arranged in the protective cylinder, two ends of the support rod correspondingly penetrate through the two openings, two vertical abutting rods are arranged on the support rod and are positioned on the inner side of the protective cylinder, and the lower ends of the abutting rods are abutted to the reinforcement cage; the blocking device is improved on the original protective cylinder, the vertical movement of the supporting rod is limited through the two openings, the supporting rod extends downwards through the abutting rod connected with the supporting rod to abut against the reinforcement cage, and therefore the condition that the reinforcement cage floats upwards in the process of pouring concrete is effectively avoided; the blocking device has the advantages of simple structure and easy implementation.
Description
Technical Field
The utility model belongs to the technical field of building construction, and particularly relates to a blocking device for preventing a reinforcement cage from floating upwards and a construction structure.
Background
The main process flow of the cast-in-situ bored pile construction is as follows: leveling the ground, installing a pile casing, positioning a drilling machine, storing and transporting slurry, drilling to a designed height, cleaning and checking holes, putting a reinforcement cage, installing a pouring conduit, mixing concrete, pouring concrete into the conduit, pouring slurry and recycling the conduit. The condition of steel reinforcement cage floating can often appear in the process of pouring concrete and recovering a guide pipe, the steel reinforcement cage floating easily causes quality defects which can not be estimated for pile forming, and the later construction and the building quality are greatly influenced.
The reason for causing the reinforcement cage to float upwards is as follows: 1) silt and easily-falling slag inclusion exist on the wall of the pile hole, and the collapsed silt and the slag inclusion form a surface layer on the concrete surface in the pouring process to block the reinforcement cage, so that the reinforcement cage rises along with the surface layer; 2) in the pouring process, due to the fact that the concrete is not sufficient in supply interruption or slump, the concrete can be solidified and can generate cohesiveness, and the reinforcement cage can float upwards along with the pouring of the subsequent concrete; 3) in the pouring process, the pouring speed is too high, so that the friction force between the concrete and the reinforcement cage is increased, and the reinforcement cage is lifted due to the buoyancy increased instantly by the slurry; 4) because the steel reinforcement cage is inclined during drilling, the steel reinforcement cage is scraped on the wall of the pile hole during lowering, and the steel reinforcement cage can be displaced during pulling up and pulling out of the conduit, so that the steel reinforcement cage rises; 5) the hanging ribs at the top of the reinforcement cage are not fixed well and have no uniformity in size, and when the guide pipe is lifted, the reinforcement cage is easily hung by the guide pipe to be lifted together.
At present, in order to avoid the situation of floating of a reinforcement cage, the following measures are mainly adopted: 1) the pouring speed of the concrete is slowed down, but the construction speed is influenced; 2) the hanging ribs of the reinforcement cage are welded on the protective cylinder or additionally arranged on the hanging ribs, so that the operation is complex and the later-stage disassembly is difficult; 3) the co-burying depth of the guide pipe and the reinforcement cage is strictly controlled, and the construction difficulty is high. Chinese patent CN211973470U relates to an anti-floating construction structure for a bored concrete pile reinforcement cage, CN212835541U an anti-floating construction structure for a bored concrete pile reinforcement cage, and CN211898338U a device for preventing a bored concrete pile reinforcement cage from floating upward.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a blocking device and a construction structure for preventing a reinforcement cage from floating upwards, so that the problem of the reinforcement cage floating upwards in cast-in-place pile construction is avoided, and the effects of simple structure and easy implementation are achieved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a blocking device for preventing a reinforcement cage from floating upwards comprises a protective cylinder, wherein two openings are oppositely formed in the side wall of the protective cylinder, and are oppositely arranged along the radial direction of the protective cylinder; the steel bar protecting device is characterized in that a supporting rod is arranged in the protecting cylinder, two ends of the supporting rod correspondingly penetrate through the two openings, two butt rods extending along the axial direction of the protecting cylinder are arranged on the supporting rod at intervals, the butt rods are located in the protecting cylinder, and free ends of the two butt rods in the same direction form butt ends which are used for butting steel bar cages.
Furthermore, the cross section of the supporting rod is rectangular, and the shape and the size of the opening correspond to the cross section of the supporting rod.
Furthermore, the abutting end is connected with an abutting part which is of a Y-shaped or U-shaped structure and the opening faces the direction far away from the supporting rod.
Further, the one end of bracing piece is connected with the barrier part, the outer wall butt of barrier part and pile casing, the other end of bracing piece have screw thread and threaded connection have a locking plate, locking plate and the outer wall butt of pile casing.
Further, the blocking part comprises two baffle plates which are symmetrically connected to two sides of the supporting rod, and the baffle plates incline towards the other end of the supporting rod and are abutted to the outer wall of the pile casing.
Furthermore, a through sliding groove is formed in the supporting rod, and the abutting rod movably penetrates through the sliding groove and can move along the axial direction of the protective cylinder; the butt pole has the external screw thread, and threaded connection has two adjusting plate on the butt pole, and the bracing piece is located between two adjusting plate in order to fix the butt pole through screwing two adjusting plate in opposite directions.
Furthermore, the sliding groove extends along the length direction of the supporting rod so that the distance between the two abutting rods in the length direction of the supporting rod is adjustable.
Furthermore, another supporting rod is arranged in the protective cylinder, another two corresponding holes are formed in the protective cylinder, and the two supporting rods are vertically crossed.
The utility model also relates to a construction structure for preventing the reinforcement cage from floating, which comprises a pile hole vertically drilled on the ground, a reinforcement cage arranged in the pile hole, and the blocking device for preventing the reinforcement cage from floating; the protective cylinder is pre-buried in the position of an orifice of the pile hole, and the butt joint end is vertically downward and is abutted to the reinforcement cage.
Compared with the prior art, the utility model has the following beneficial effects:
in the construction of the cast-in-situ bored pile, the pile hole drilling is performed by arranging the pile casing, the side wall of the pile casing is provided with two openings for connecting a rope or a lifting hook so as to conveniently lift the pile casing before and after construction, the blocking device is additionally provided with a structure for blocking the steel reinforcement cage from floating on the basis of the original pile casing, the vertical movement of the supporting rod is limited by the two openings, and the supporting rod extends downwards through the abutting rod connected with the supporting rod for abutting against the steel reinforcement cage, so that the floating condition of the steel reinforcement cage in the process of pouring concrete is effectively avoided; the blocking device flexibly utilizes the original construction structure and has the advantages of small change, simple structure and easy implementation.
Drawings
Fig. 1 is a top view of an embodiment of a blocking device for preventing a reinforcement cage from floating upward;
FIG. 2 is a side view of an embodiment of a blocking device for preventing a reinforcement cage from floating upward;
FIG. 3 is a schematic view of a construction structure for preventing a reinforcement cage from floating upward according to an embodiment;
the pile comprises a pile hole 1, a reinforcement cage 2, a longitudinal bar 21, a stirrup 22, a pile casing 3, an opening 31, a support rod 4, a baffle 41, a locking plate 42, a sliding groove 43, an abutting rod 5, an abutting part 6, a connector 61, an abutting sheet 62 and an adjusting plate 7.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1 and 2, a blocking device for preventing a reinforcement cage from floating upwards comprises a pile casing 3, wherein two openings 31 are oppositely formed in the side wall of the pile casing 3 (i.e. in general cast-in-situ bored pile construction, a lifting opening for connecting a rope or a lifting hook is formed in the pile casing 3);
a support rod 4 is arranged in the protective cylinder 3, two ends of the support rod 4 correspondingly penetrate through the two openings 31, two abutting rods 5 extending along the axial direction of the protective cylinder 3 are arranged on the support rod 4 at intervals, the abutting rods 5 are located in the protective cylinder 3, and free ends of the two abutting rods 5 in the same direction form abutting ends for abutting against the reinforcement cage 2;
in the construction of the cast-in-situ bored pile, the pile casing 3 is arranged as a necessary step for drilling the pile hole 1, the side wall of the pile casing 3 is provided with two openings 31 for connecting a rope or a lifting hook so as to conveniently lift the pile casing 3 before and after construction, the blocking device is additionally provided with a structure for blocking the steel reinforcement cage 2 from floating on the basis of the original pile casing 3, the vertical movement of the supporting rod 4 is limited by the two openings 31, the supporting rod 4 extends downwards through the abutting rod 5 connected with the supporting rod for abutting against the steel reinforcement cage 2, and therefore the situation that the steel reinforcement cage 2 floats upwards in the process of pouring concrete is effectively avoided; the blocking device flexibly utilizes the original construction structure and has the advantages of small change, simple structure and easy implementation.
Preferably, the two openings 31 are arranged opposite to each other in the radial direction of the casing 3; so that two butt joint poles 5 lie in same diametric (al) direction with the butt position of steel reinforcement cage 2, when steel reinforcement cage 2 had the come-up trend, receive the power of blockking of butt pole 5 more balanced to avoid appearing the condition of steel reinforcement cage 2 slopes.
Preferably, the cross section of the support rod 4 is rectangular, and the shape and the size of the opening 31 correspond to the cross section of the support rod 4; rotate with restriction bracing piece 4, avoid when steel reinforcement cage 2 has the come-up trend, butt pole 5 receives steel reinforcement cage 2 to rock the influence and take place relative oscillation, and then can't continue to keep with the state of 2 butts of steel reinforcement cage.
Preferably, the abutting end is connected with an abutting part 6, the abutting part 6 is Y-shaped or U-shaped and is opened in the direction away from the support rod 4; the abutting rod 5 can abut against the reinforcement cage 2 to limit the reinforcement cage 2 from floating upwards, and can limit the shaking of the reinforcement cage 2, so that the construction quality of the cast-in-place pile is further improved; in this embodiment, the abutting portion 6 is a Y-shaped structure with a downward opening, the abutting portion 6 is composed of a connector 61 and two abutting pieces 62, the upper end of the connector 61 is used for being connected with the lower end of the abutting rod 5, fixing modes such as threaded connection or welding can be adopted, the two abutting pieces 62 are located below the connector 61, the upper ends of the two abutting pieces 62 are welded to the lower end face of the connector 61, and the lower ends of the two abutting pieces 62 are away from each other and extend obliquely downward to form a Y-shaped structure with the connector 61.
Preferably, one end of the support rod 4 is connected with a blocking part, the blocking part is abutted against the outer wall of the casing 3, the other end of the support rod 4 is provided with threads and is connected with a locking plate 42 in a threaded manner, and the locking plate 42 is abutted against the outer wall of the casing 3;
the blocking part comprises two baffle plates 41, the two baffle plates 41 are symmetrically connected to two sides of the support rod 4, and the baffle plates 41 incline towards the other end of the support rod 4 and are abutted to the outer wall of the pile casing 3;
when erection bracing pole 4, pass two trompils 31 with bracing piece 4 screwed one end earlier, locate bracing piece 4 and make in protecting a section of thick bamboo 3 barrier part and the outer wall butt of protecting a section of thick bamboo 3, then with locking plate 42 and 4 threaded connection of bracing piece and adjustment locking plate 42 positions, make locking plate 42 and the outer wall butt of protecting a section of thick bamboo 3, make the unable lateral shifting of bracing piece 4, avoid appearing because of bracing piece 4 receives the influence that steel reinforcement cage 2 rocked to take place lateral shifting, and then lead to the condition of the unable continuation of extension pole 5 and steel reinforcement cage 2 butt.
Preferably, the supporting rod 4 is provided with a through sliding groove 43, the sliding groove 43 extends along the length direction of the supporting rod 4, the abutting rod 5 movably penetrates through the sliding groove 43, the abutting rod 5 can move along the axial direction of the casing 3 and the length direction of the supporting rod 4, the abutting rod 5 is provided with external threads, the abutting rod 5 is in threaded connection with two adjusting plates 7, the two adjusting plates 7 are respectively positioned at the upper side and the lower side of the supporting rod 4, and the adjusting plates 7 abut against the supporting rod 4 to fix the abutting rod 5; so that the abutting rod 5 can be flexibly adjusted to adapt to the reinforcement cages 2 with various sizes and specifications;
when installation and adjustment butt joint pole 5, earlier with an adjusting plate 7 and 5 threaded connection of butt joint pole, then make butt pole 5 wear to locate in spout 43 from bottom to top, then according to 2 horizontal position and the vertical position of adjusting butt joint pole 5 of steel reinforcement cage, so that the stop part and the 2 butts of steel reinforcement cage of the lower extreme of butt joint pole 5, then with another adjusting plate 7 and 5 threaded connection of butt joint pole, two adjusting plates 7 respectively with the upper and lower two sides butt of bracing piece 4 and step up, thereby restriction butt joint pole 5's lateral shifting and vertical migration.
When the device is implemented, the number of the support rods can be two, the other two openings corresponding to the other support rod are arranged on the protective sleeve, and the two support rods are vertically crossed; abutting parts at the lower ends of the four abutting rods are abutted with the steel reinforcement cage, and abutting positions are uniformly distributed along the circumferential direction, so that the blocking force borne by the steel reinforcement cage when the steel reinforcement cage has a floating trend is more balanced, and the blocking effect on the steel reinforcement cage is better; this embodiment uses only one support bar.
Referring to fig. 3, the construction structure for preventing the reinforcement cage from floating up comprises a pile hole 1 vertically drilled on the ground, a reinforcement cage 2 is arranged in the pile hole 1, the construction structure further comprises the blocking device for preventing the reinforcement cage 2 from floating up, the pile casing 3 is pre-embedded in the orifice position of the pile hole 1, and the abutting end is vertically downward and abutted against the reinforcement cage 2;
the reinforcement cage 2 is composed of a plurality of longitudinal ribs 21 which are uniformly distributed in the circumferential direction and stirrups 22 which are spirally arranged around the longitudinal ribs 21, the stirrups 22 are fixedly connected with the longitudinal ribs 21 in a welding mode, and the lower end of the blocking part is abutted to the stirrups 22 of the uppermost circle in the reinforcement cage 2;
during implementation, in order to avoid when the steel reinforcement cage come-up trend is great, the condition that the steel reinforcement cage rises together through the drive of butt joint pole and bracing piece to the section of thick bamboo appears, if necessary, can after the installation of blocking device is accomplished, increase the counter weight on protecting the section of thick bamboo or fix again protecting the section of thick bamboo.
The installation and use method of the blocking device comprises the following steps:
1) before the pile hole 1 is drilled, the pile casing 3 is buried at a corresponding position, one end of the pile casing 3, which is provided with the opening 31, faces upwards, and the opening 31 is higher than the ground;
2) after the reinforcement cage 2 is placed in the pile hole 1, one end of the support rod 4 with threads transversely penetrates through the two open holes 31 in the pile casing 3, the blocking part is abutted against the outer wall of the pile casing 3, then the locking plate 42 is in threaded connection with the support rod 4, the position of the locking plate 42 is adjusted, and the locking plate 42 is abutted against the outer wall of the pile casing 3;
3) one adjusting plate 7 is in threaded connection with the abutting rod 5, the position of the adjusting plate 7 is close to the abutting part 6 at the lower end of the abutting rod 5, then the abutting rod 5 is arranged in the sliding groove 43 on the supporting rod 4 in a penetrating manner from bottom to top, then the other adjusting plate 7 is in threaded connection with the abutting rod 5, and the two adjusting plates 7 are respectively positioned at the upper side and the lower side of the supporting rod 4;
4) the position of the abutting rod 5 is adjusted vertically and horizontally to enable the abutting part 6 to abut against the reinforcement cage 2, then the two adjusting plates 7 are respectively rotated to enable the two adjusting plates 7 to abut against and clamp the upper side and the lower side of the supporting rod 4 respectively, and therefore the position of the abutting rod 5 is fixed;
5) repeating the step 4) to complete the installation of the other butting rod 5;
6) and (5) repeating the steps 2) to 5) to finish the installation of another supporting rod, and finishing the installation of the blocking device.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A blocking device for preventing a reinforcement cage from floating upwards comprises a protective cylinder, wherein two openings are oppositely formed in the side wall of the protective cylinder; the method is characterized in that: the steel bar protecting device is characterized in that a supporting rod is arranged in the protecting cylinder, two ends of the supporting rod correspondingly penetrate through the two openings, two butt rods extending along the axial direction of the protecting cylinder are arranged on the supporting rod at intervals, the butt rods are located in the protecting cylinder, and free ends of the two butt rods in the same direction form butt ends which are used for butting steel bar cages.
2. The blocking device for preventing the steel reinforcement cage from floating upwards as claimed in claim 1, wherein: the cross section of the supporting rod is rectangular, and the shape and the size of the opening correspond to the cross section of the supporting rod.
3. The blocking device for preventing the steel reinforcement cage from floating upwards as claimed in claim 1, wherein: the butt joint end is connected with a butt joint part which is of a Y-shaped or U-shaped structure and the opening faces the direction far away from the support rod.
4. The blocking device for preventing the steel reinforcement cage from floating upwards as claimed in claim 1, wherein: the one end of bracing piece is connected with the stop part, the outer wall butt of stop part and the section of thick bamboo that protects, the other end of bracing piece have external screw thread and threaded connection have a locking plate, the outer wall butt of locking plate and the section of thick bamboo that protects.
5. A blocking device for preventing a reinforcement cage from floating upwards according to claim 4, wherein: the barrier part comprises two baffles which are symmetrically connected to two sides of the supporting rod, and the baffles incline towards the other end of the supporting rod and are abutted to the outer wall of the pile casing.
6. The blocking device for preventing the steel reinforcement cage from floating upwards as claimed in claim 1, wherein: the supporting rod is provided with a through sliding groove, and the abutting rod movably penetrates through the sliding groove and can move along the axial direction of the protective cylinder;
the butt pole has the external screw thread, and threaded connection has two adjusting plate on the butt pole, and the bracing piece is located between two adjusting plate in order to fix the butt pole through screwing two adjusting plate in opposite directions.
7. The blocking device for preventing the steel reinforcement cage from floating upwards as claimed in claim 6, wherein: the sliding groove extends along the length direction of the supporting rod so that the distance between the two abutting rods in the length direction of the supporting rod is adjustable.
8. The blocking device for preventing the steel reinforcement cage from floating upwards as claimed in claim 1, wherein: the protective cylinder is also internally provided with another supporting rod, the protective cylinder is provided with another two corresponding openings, and the two supporting rods are vertically crossed.
9. The utility model provides a prevent construction structures of steel reinforcement cage come-up, includes that vertical brill locates the stake hole on ground, the stake downthehole steel reinforcement cage that has, its characterized in that: the steel reinforcement cage further comprises a blocking device for preventing the steel reinforcement cage from floating upwards according to any one of claims 1 to 8;
the protective cylinder is pre-buried in the position of an orifice of the pile hole, and the butt joint end is vertically downward and is abutted to the reinforcement cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122013799.6U CN215629897U (en) | 2021-08-25 | 2021-08-25 | Prevent stop device and construction structures of steel reinforcement cage come-up |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122013799.6U CN215629897U (en) | 2021-08-25 | 2021-08-25 | Prevent stop device and construction structures of steel reinforcement cage come-up |
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| CN215629897U true CN215629897U (en) | 2022-01-25 |
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| CN202122013799.6U Active CN215629897U (en) | 2021-08-25 | 2021-08-25 | Prevent stop device and construction structures of steel reinforcement cage come-up |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045269A (en) * | 2022-06-09 | 2022-09-13 | 中交一公局第八工程有限公司 | Pile mould and pile building method |
| CN115538420A (en) * | 2022-10-24 | 2022-12-30 | 中冶武勘工程技术有限公司 | Anti-floating device for bored pile reinforcement cage and construction method |
-
2021
- 2021-08-25 CN CN202122013799.6U patent/CN215629897U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045269A (en) * | 2022-06-09 | 2022-09-13 | 中交一公局第八工程有限公司 | Pile mould and pile building method |
| CN115538420A (en) * | 2022-10-24 | 2022-12-30 | 中冶武勘工程技术有限公司 | Anti-floating device for bored pile reinforcement cage and construction method |
| CN115538420B (en) * | 2022-10-24 | 2023-10-27 | 中冶武勘工程技术有限公司 | Anti-floating device for bored pile reinforcement cage and construction method |
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