CN213476969U - Self-locking anti-floating anchor rod - Google Patents
Self-locking anti-floating anchor rod Download PDFInfo
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- CN213476969U CN213476969U CN202022146080.5U CN202022146080U CN213476969U CN 213476969 U CN213476969 U CN 213476969U CN 202022146080 U CN202022146080 U CN 202022146080U CN 213476969 U CN213476969 U CN 213476969U
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Abstract
The application relates to a self-locking anti-floating anchor rod, which belongs to the technical field of anti-floating anchor rods and comprises a plurality of rod bodies which are vertically arranged and an expanded cone body positioned at the bottom ends of the rod bodies, wherein the rod bodies are fixed by utilizing a connecting frame; the tip of the expanded vertebral body is connected with the rod body, and the upper part of the expanded vertebral body is sleeved with an expansion sleeve matched with the tip of the expanded vertebral body; the expansion sleeve can slide relatively along the tip of the expanded vertebral body and expand when being subjected to the action of the upper pressure. This application has increased the anchor power of the body of rod with the country rock through the cover that expands, sets up the enlarged end in the bottom of the body of rod simultaneously, also plays the effect of the anchor power of the further reinforcing body of rod and post-cast concrete layer, has obviously improved the anti floating strength of stock.
Description
Technical Field
The application relates to the field of anti-floating anchor rods, in particular to a self-locking anti-floating anchor rod.
Background
The anti-floating anchor rod is a structural member arranged for resisting upward displacement of a building on the anti-floating anchor rod, is one of anti-floating measures of an underground structure of a building engineering, is related to the height and the change condition of an underground water level, and is opposite to the stress direction of a compression-resistant pile.
In the current anti-floating anchor rod construction, the anchor rod is mostly placed in a drill hole by utilizing a positioning frame, the bottom of the anchor rod is an upright polished rod section or a screw rod section, and the tensile resistance of the anchor rod is insufficient after concrete is poured.
SUMMERY OF THE UTILITY MODEL
In order to improve the anchoring strength and the tensile resistance of the anti-floating anchor rod, the application provides a self-locking anti-floating anchor rod.
The application provides a from locking-type anti-floating anchor rod adopts following technical scheme:
a self-locking anti-floating anchor rod comprises a plurality of rod bodies which are vertically arranged and an enlarged cone body which is positioned at the bottom ends of the rod bodies, wherein the rod bodies are fixed by a connecting frame; the tip of the expanded vertebral body is connected with the rod body, and the upper part of the expanded vertebral body is sleeved with an expansion sleeve matched with the tip of the expanded vertebral body; the expansion sleeve can slide relatively along the tip of the expanded vertebral body and expand when being subjected to the action of the upper pressure.
Through adopting above-mentioned technical scheme, many body of rod with enlarge the centrum and be connected, put down the many body of rod that will have the expansion centrum and carry out the slip casting after drilling, thereby when receiving the pressure that comes from the top, the cover that expands slides downwards outwards, support tightly at last on the country rock, for single body of rod, at first through the cover that expands increased the anchor power of the body of rod with the country rock, set up the expansion end simultaneously in the bottom of the body of rod, also further strengthened the body of rod and the anchor power on post-cast concrete layer.
Preferably, the shape of the expanded cone is a circular truncated cone, the expansion sleeve is tubular and matched with the shape of the expanded cone, and the inner diameter of the expansion sleeve is gradually increased from top to bottom; the bottom end diameter of the expanded vertebral body is larger than the maximum inner diameter of the expansion sleeve.
Through adopting above-mentioned technical scheme, the internal diameter that will expand the cover sets to by the top down increase gradually to make the cover that expands warp, expand more easily when receiving pressure.
Preferably, an opening is formed in the side wall of the expansion sleeve.
Through adopting above-mentioned technical scheme, set up the opening on the lateral wall of the cover that expands and then make the outer expanding of the cover that expands easier, the flow of concrete when also being convenient for later stage slip casting.
Preferably, the bottom end of the expanded vertebral body is provided with a plurality of supporting columns, and the expanded vertebral body is provided with through holes vertically penetrating through the expanded vertebral body.
By adopting the technical scheme, the existence of the supporting column enables a gap to be formed between the bottom of the drilling hole and the expanded centrum, and later-poured concrete can enter the gap, so that the connection strength between the expanded centrum and the surrounding rock is improved.
Preferably, the bottom surface of the enlarged cone is provided with a threaded hole opposite to the rod body, the rod body is a threaded steel bar, and the rod body is spirally inserted into the threaded hole.
By adopting the technical scheme, the rod body is conveniently connected with the enlarged cone body, and the field assembly is facilitated.
Preferably, the connecting frame comprises an inner ring in the middle and a hoop which is fixed on the inner ring along the circumferential direction of the inner ring and encircles the rod body.
Through adopting above-mentioned technical scheme, connect into a whole with many body of rod to make things convenient for the whole of many body of rods to transfer.
Preferably, the tightening band comprises two opposite parts, and the two parts are connected by a bolt and a nut matched with the bolt.
Through adopting above-mentioned technical scheme for the link can with the body of rod between the fastening connection, avoid the body of rod to slide in the lock ring.
Preferably, a sheath is sleeved outside the rod body; the connecting frame is surrounded by the sheath, and centering positioning frames which are arranged along the axial direction of the rod body at intervals are sleeved outside the sheath.
Through adopting above-mentioned technical scheme, guarantee that the body of rod does not rock at the in-process of transferring, the installation of the convenient centering locating rack of sheath, enlarge the centrum and transfer to drilling hole bottom after, push down the sheath and make the cover expansion that expands.
Preferably, the wall of the sheath is provided with a plurality of slurry through holes.
Through adopting above-mentioned technical scheme, the setting of logical thick liquid hole is convenient for the inside and outside concrete of sheath flow when slip casting to the closely knit better of the concrete that makes.
Preferably, the top end of the rod body is bent to form a horizontal bending section, and reinforcing ribs welded with the bending section and the vertical section of the rod body in the length direction are arranged between the bending section and the vertical section of the rod body.
Through adopting above-mentioned technical scheme, guarantee the body of rod and be connected of upper portion component, the intensity of bending segment can be strengthened in the setting of strengthening rib.
This application has increased the anchor power of the body of rod with the country rock through the cover that expands, sets up the enlarged end in the bottom of the body of rod simultaneously, also plays the effect of the anchor power of the further reinforcing body of rod and post-cast concrete layer, has obviously improved the anti floating strength of stock.
Drawings
Fig. 1 is a schematic overall structure diagram of the self-locking anti-floating anchor rod of the present application;
fig. 2 is a schematic view of the internal structure of the self-locking anti-floating anchor rod of the present application;
FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;
FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;
FIG. 5 is a cross-sectional view of the self-locking anti-floating anchor of the present application;
fig. 6 is a cross-sectional view of the self-locking anti-floating anchor of the present application in another direction.
Description of reference numerals: 1. a rod body; 11. bending the section; 12. reinforcing ribs; 2. a connecting frame; 21. an inner ring; 22. tightening; 3. a sheath; 31. a slurry through hole; 4. enlarging the vertebral body; 41. a threaded hole; 42. a support pillar; 43. a through hole; 5. expanding the sleeve; 51. an opening; 6. centering and positioning frames; 7. surrounding rocks; 71. and (6) drilling.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses an anti-floating anchor rod of self-locking type. Referring to fig. 1 and 2, the self-locking anti-floating anchor rod comprises a rod body 1 arranged vertically and an enlarged cone 4 positioned at the bottom end of the rod body 1. The rod body 1 is a twisted steel. The rod body 1 is coated with epoxy resin.
Referring to fig. 2 and 3, the rod bodies 1 are arranged in three and form an equilateral triangle in the horizontal direction. The rod bodies 1 are connected by a connecting frame 2. The connecting frame 2 comprises an inner ring 21 between the rods 1 and a hoop 22 fixed on the inner ring 21 and embracing the rods 1. The tightening band 22 includes two parts disposed horizontally opposite to each other, and the two parts are connected to each other by a bolt and a nut fitted to the bolt. By tightening the nut, the tightening band 22 holds the rod body 1 tightly, thereby ensuring that no relative sliding occurs between the connecting frame 2 and the rod body 1.
The connection frame 2 is provided in plurality in the axial direction of the rod body 1 so that the rod body 1 is kept upright without being bent in the vertical direction.
Referring to fig. 2 and 4, the enlarged cone 4 is in the shape of a circular truncated cone. The top surface of the enlarged cone 4 is provided with a threaded hole 41 at a position opposite to the rod body 1, and the threaded hole 41 is a blind hole. The rod body 1 is spirally inserted into the threaded hole 41 so as to realize the connection of the rod body 1 and the enlarged cone 4.
The bottom surface of the enlarged vertebral body 4 is fixedly provided with a support column 42 which extends downwards along the circumferential direction. The center of the enlarged cone 4 is provided with a through hole 43 which penetrates through the enlarged cone 4, so that later grouting is facilitated.
Referring to fig. 5 and 6, a sheath 3 is sleeved outside the rod bodies 1 connected together by the connecting frame 2, and the sheath 3 is a steel pipe. The inner wall of the sheath 3 is tightly attached to the tightening band 22 of the connecting frame 2.
A plurality of centering positioning frames 6 are sleeved outside the sheath 3 at equal intervals along the length direction. The centering and positioning frame 6 is welded on the outer wall of the sheath 3. The distance of adjacent centering locating rack 6 is 2 m to guarantee that the body of rod 1 does not rock at the in-process of transferring.
The jacket 3 is sleeved outside the pipe body 1, so that the centering and positioning frame 6 can be conveniently installed. Later on, grouting is carried out in the gap between the rod body 1 and the sheath 3, and the sheath 3 also helps to protect the rod body 1.
Referring to fig. 1 and 6, the sheath 3 may be provided with a plurality of through holes 31. The setting of logical thick liquid hole 31 is convenient for the flow of the inside and outside concrete of sheath 3 during the slip casting to make the closely knit better of concrete.
The position of the periphery of the rod body 1 between the sheath 3 and the expanded centrum 4 is sleeved with a tubular expansion sleeve 5, the diameter of an inner hole of the expansion sleeve 5 is gradually increased from top to bottom, and an opening 51 is arranged on the side wall of the expansion sleeve 5. The maximum inner diameter of the expansion sleeve 5 is smaller than the diameter of the bottom end of the enlarged vertebral body 4.
The top of the expanding cone 4 is matched with the bottom of the expanding sleeve 5 and is inserted into the expanding sleeve 5, when the expanding sleeve 5 is pressed from the upper part, the expanding sleeve moves downwards so that the outer diameter is expanded and finally abuts against surrounding rock 7, and therefore the connecting strength of the rod body 1 and the surrounding rock 7 is increased. The side wall of the expansion sleeve 5 is provided with the opening 51, so that the expansion sleeve 5 is easier to expand, and the concrete can flow conveniently during the later grouting.
In the figure, in order to better reflect the positions of the expanded vertebral body 4 and the expansion sleeve 5 in the drill hole 71, the distance between the expanded vertebral body 4 and the expansion sleeve 5 and the hole wall of the drill hole 71 is enlarged, and in actual operation, the distance between the expansion sleeve 5 and the hole wall of the drill hole 71 is very small, so that the expansion sleeve 5 can be tightly pressed against the hole wall of the drill hole 71 by generating small deformation when being subjected to pressure from above.
The top of the rod body 1 is provided with an integrally connected horizontal bending section 11, and a reinforcing rib 12 welded with the bending section 11 and the vertical section in the length direction is arranged between the bending section 11 and the vertical section. The provision of the ribs 12 helps to increase the tensile strength of the bend section 11.
The implementation principle of the self-locking anti-floating anchor rod in the embodiment of the application is as follows: assembling a rod body 1 according to the length of the drilled hole 71, connecting the rod body 1 with an expanded vertebral body 4, sleeving an expansion sleeve 5 above the expanded vertebral body 4, and connecting the rod bodies 1 by using a connecting frame 2; sleeving the sheath 3 on the rod body 1, then lowering the rod body 1, starting to press the sheath 3 after the rod body is lowered in place, and enabling the expansion sleeve 5 to deform under the pressure of the upper sheath 3 and abut against the hole wall of the drill hole 71; after the grouting is finished and the post-cast concrete reaches a certain strength, the top of the rod body 1 is bent by equipment to form a bending section 11, and reinforcing ribs 12 are welded between the bending section 11 and the vertical section.
The presence of the support columns 42 provides a space between the bottom of the bore hole 71 and the enlarged cone 4 to facilitate the entry of post-cast concrete, thereby improving the strength of the connection of the enlarged cone 4 to the surrounding rock 7.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a from locking-type anti-floating anchor rod which characterized in that: the device comprises a plurality of vertically arranged rod bodies (1) and an enlarged cone body (4) positioned at the bottom end of each rod body (1), wherein the rod bodies (1) are fixed by using a connecting frame (2); the tip of the expanded vertebral body (4) is connected with the rod body (1), and an expansion sleeve (5) matched with the tip of the expanded vertebral body (4) is sleeved on the upper portion of the expanded vertebral body (4); the expansion sleeve (5) can slide relatively along the tip of the expanded vertebral body (4) and expand when being subjected to the action of the upper pressure.
2. The self-locking anti-floating anchor rod of claim 1, wherein: the shape of the expanded cone body (4) is a circular truncated cone, the expansion sleeve (5) is tubular and matched with the shape of the expanded cone body (4), and the inner diameter of the expansion sleeve (5) is gradually increased from top to bottom; the diameter of the bottom end of the expanded vertebral body (4) is larger than the maximum inner diameter of the expansion sleeve (5).
3. The self-locking anti-floating anchor rod of claim 2, wherein: an opening (51) is arranged on the side wall of the expansion sleeve (5).
4. The self-locking anti-floating anchor rod of claim 1, wherein: the bottom end of the expanded vertebral body (4) is provided with a plurality of supporting columns (42), and the expanded vertebral body (4) is provided with a through hole which vertically penetrates through the expanded vertebral body (4).
5. The self-locking anti-floating anchor rod of claim 1, wherein: the bottom surface of the enlarged cone body (4) is provided with a threaded hole (41) opposite to the rod body (1), the rod body (1) is a threaded steel bar, and the rod body (1) is spirally inserted into the threaded hole (41).
6. The self-locking anti-floating anchor rod of claim 1, wherein: the connecting frame (2) comprises an inner ring (21) in the middle and a hoop (22) which is fixed on the inner ring (21) along the circumferential direction of the inner ring (21) and encircles the rod body (1).
7. The self-locking anti-floating anchor rod of claim 6, wherein: the tightening band (22) comprises two opposite parts which are connected by a bolt and a nut matched with the bolt.
8. The self-locking anti-floating anchor rod of claim 1, wherein: a sheath (3) is sleeved outside the rod body (1); the connecting frame (2) is encircled by the sheath (3), and the centering positioning frame (6) which is arranged along the axial direction of the rod body (1) at intervals is sleeved on the outer portion of the sheath (3).
9. The self-locking anti-floating anchor rod according to claim 8, wherein: the wall of the sheath (3) is provided with a plurality of slurry through holes (31).
10. The self-locking anti-floating anchor rod of claim 1, wherein: the top of the rod body (1) is bent to form a horizontal bending section (11), and reinforcing ribs (12) welded with the vertical sections of the bending section (11) and the rod body (1) in the length direction are arranged between the bending section (11) and the vertical section of the rod body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146080.5U CN213476969U (en) | 2020-09-26 | 2020-09-26 | Self-locking anti-floating anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146080.5U CN213476969U (en) | 2020-09-26 | 2020-09-26 | Self-locking anti-floating anchor rod |
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| Publication Number | Publication Date |
|---|---|
| CN213476969U true CN213476969U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022146080.5U Active CN213476969U (en) | 2020-09-26 | 2020-09-26 | Self-locking anti-floating anchor rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529810A (en) * | 2021-07-21 | 2021-10-22 | 江苏之上建设有限公司 | Waterproof structure of anti-floating anchor rod for deep foundation pit and construction method thereof |
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2020
- 2020-09-26 CN CN202022146080.5U patent/CN213476969U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529810A (en) * | 2021-07-21 | 2021-10-22 | 江苏之上建设有限公司 | Waterproof structure of anti-floating anchor rod for deep foundation pit and construction method thereof |
| CN113529810B (en) * | 2021-07-21 | 2022-06-10 | 江苏之上建设有限公司 | Waterproof structure of anti-floating anchor rod for deep foundation pit and construction method thereof |
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