Anti-floating anchor rod reinforcing structure
By incorporating an expandable annular expansion structure at the lower end of the anti-buoyancy anchor rod, the contact area with the soil is increased, solving the problem of low holding force of existing pull-out tie rods and achieving a significant improvement in pull-out performance.
Patent Information
- Application Number
- CN202423306515.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing anti-pull-out tie rod structures have low gripping force on the soil and weak pull-out resistance, which can easily lead to damage to underground structures, especially when the groundwater level is high during the rainy season.
An expandable annular expansion structure is installed at the lower end of the anti-buoyancy anchor rod. The expansion head plate expands outward through the prestressed locking structure, which increases the contact area with the soil and improves the pull-out resistance.
By increasing the contact area with the soil, the pull-out resistance of the anti-buoyancy anchor is significantly improved, preventing damage to underground structures.
Smart Images
Figure CN223633925U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to an anti-floating anchor rod structure, in particular to an anti-floating anchor rod reinforcing structure, and belongs to the technical field of building construction. BACKGROUND
[0002] In building underground works, underground works are affected by underground water, and the underground water can generate upward floating force on the basement ground. In the case of rich underground water, the self weight of the structure is not enough to resist the upward floating force of the underground water, and the basement floor can be lifted and damaged by the underground water. At present, an anti-floating anchor rod is usually used to resist the upward floating force generated by the underground water on the basement ground. In the process of construction, the straight rod at the lower part of the anti-floating anchor rod is inserted into the soil, and then concrete grouting is carried out. The ordinary anti-pulling rod has small grip on the soil, weak anti-pulling capacity and poor tensile performance, and the basement floor is prone to bulging in the case of high underground water level in the rainy season, resulting in concrete cracking. SUMMARY
[0003] The application aims at the defects and deficiencies of the prior art, such as simple structure of the ordinary anti-pulling rod, small grip on the soil, weak anti-pulling capacity, poor tensile performance and easy underground structure damage, and provides an anti-floating anchor rod reinforcing structure which has reasonable structure, large contact area between the anti-floating anchor rod and the soil, strong grip of the anti-floating anchor rod on the soil and significantly improved anti-pulling performance of the anti-floating anchor rod.
[0004] To achieve the above-mentioned purpose, the technical solution of the application is as follows: an anti-floating anchor rod reinforcing structure, comprising a soil, and a concrete basement floor poured on the soil in a plane, characterized in that: a plurality of bottom plate embedded parts are embedded in the basement floor in equal intervals, the upper end of the bottom plate embedded part exposed from the basement floor is connected and fixed with an upper anchor seat, a through hole deep hole is formed in the upper anchor seat, the deep hole penetrates the basement floor and penetrates into the soil, an anti-floating anchor rod is inserted into the deep hole, a ring-shaped expansion structure is sleeved on the lower end of the anti-floating anchor rod, a support structure is arranged between the ring-shaped expansion structure and the upper anchor seat, and a prestressed locking structure is arranged between the upper end of the anti-floating anchor rod and the upper anchor seat.
[0005] Further, the ring-shaped expansion structure comprises a metal sleeve, a head expansion piece and a bifurcated part, a plurality of bifurcated parts are formed in the lower end of the metal sleeve, and the bifurcated parts divide the lower part of the metal sleeve into a plurality of head expansion pieces.
[0006] Further, the metal sleeve is a conical sleeve, and the diameter of the upper end of the conical sleeve is smaller than the diameter of the lower end.
[0007] Further, the support structure comprises a support connecting rod and a bottom fixing ring, the bottom fixing ring is arranged in the deep hole in the soil, the bottom fixing ring is located at the upper end of the metal sleeve and blocks the upward sliding of the metal sleeve, and the support connecting rod is connected and fixed between the bottom fixing ring and the upper anchor seat.
[0008] Further, the lower end of the anti-floating anchor rod is thickened.
[0009] Further, the prestress locking structure is a locking nut, which is installed on the external threaded end of the upper end of the anti-floating anchor rod.
[0010] The beneficial effects of the present application are:
[0011] The present application has a reasonable structure. By sleeving the expandable annular expansion structure at the lower end of the anti-floating anchor rod, the annular expansion structure is expanded outward by applying upward prestress to the anti-floating anchor rod, thereby increasing the stress area between the anchor rod and the bottom soil and improving the anchoring performance.
[0012] The present application sets the annular expansion structure as a metal sleeve with a bifurcated part at the lower end, the bifurcated part divides the lower part of the metal sleeve into multiple expanded head pieces, the locking nut is screwed on the upper end of the anti-floating anchor rod, and the anti-floating anchor rod is tensioned upward and the expanded head pieces are expanded outward by screwing the locking nut downward, thereby increasing the stress area between the expanded head pieces and the bottom soil, so that the anti-floating anchor rod has higher and stronger uplift anchoring performance. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 is a structural schematic diagram of the present application.
[0014] Fig. 2 is a structural schematic diagram of the present application after tensioning and expansion.
[0015] Fig. 3 is a structural schematic diagram of the present application before being inserted into the basement floor and soil.
[0016] In the figure: soil 1, basement floor 2, floor embedded part 3, deep hole 4, upper anchoring seat 5, anti-floating anchor rod 6, support connecting rod 7, bottom fixing ring 8, annular expansion structure 9, metal sleeve 10, expanded head piece 11, bifurcated part 12, locking nut 13. DETAILED DESCRIPTION
[0017] The present application is further described in detail below in conjunction with the description of the drawings and specific embodiments.
[0018] Reference should be made to Figs. 1 to 3The application discloses an anti-floating anchor rod reinforcing structure, which comprises a soil body 1, and a concrete basement bottom plate 2 is horizontally cast on the soil body 1, characterized in that a plurality of bottom plate embedded parts 3 are equidistantly arranged on the basement bottom plate 2, the upper end of the bottom plate embedded part 3 is exposed from the basement bottom plate 2 and is connected and fixed with an upper anchoring seat 5, a penetrating hole deep hole 4 is formed in the upper anchoring seat 5, the deep hole 4 penetrates the basement bottom plate 2 and extends into the soil body 1, an anti-floating anchor rod 6 is inserted into the deep hole 4, a ring-shaped expansion structure 9 is sleeved on the lower end of the anti-floating anchor rod 6, a supporting structure is arranged between the ring-shaped expansion structure 9 and the upper anchoring seat 5, and a prestressed locking structure is arranged between the upper end of the anti-floating anchor rod 6 and the upper anchoring seat 5.
[0019] The ring-shaped expansion structure 9 comprises a metal sleeve 10, expanded head pieces 11 and bifurcated parts 12, a plurality of bifurcated parts 12 are formed in the lower end of the metal sleeve 10, and the lower part of the metal sleeve 10 is divided into a plurality of expanded head pieces 11 by the bifurcated parts 12.
[0020] The metal sleeve 10 is a conical sleeve, and the upper end of the conical sleeve has a smaller diameter than the lower end.
[0021] The supporting structure comprises a supporting connecting rod 7 and a bottom fixing ring 8, the bottom fixing ring 8 is arranged in the deep hole 4 in the soil body 1, the bottom fixing ring 8 is located at the upper end of the metal sleeve 10 and blocks the upward sliding of the metal sleeve 10, and the supporting connecting rod 7 is connected and fixed between the bottom fixing ring 8 and the upper anchoring seat 5.
[0022] The lower end of the anti-floating anchor rod 6 is thickened.
[0023] The prestressed locking structure is a locking nut 13, and the locking nut 13 is installed on the externally threaded end of the upper end of the anti-floating anchor rod 6.
[0024] In the application, the lower end of the anti-floating anchor rod is sleeved with a metal sleeve and thickened, bifurcated parts are formed in the lower end of the metal sleeve, the lower part of the metal sleeve is divided into a plurality of expanded head pieces by the bifurcated parts, a thread is formed in the upper end of the anti-floating anchor rod and a locking nut is screwed, a supporting device is arranged between the locking nut and the metal sleeve, the expanded head pieces are expanded outward by upward tensioning the anti-floating anchor rod, the expanded head pieces are extended into the soil body, the stress area between the expanded head pieces and the bottom soil body is increased, the anchoring performance is improved, the anchoring performance of the anti-floating anchor rod is higher and better. The specific structure of the application is as follows:
[0025] The concrete basement bottom plate 2 is horizontally cast on the soil body 1, a steel reinforcement cage is arranged in the concrete basement bottom plate 2, a plurality of bottom plate embedded parts 3 are equidistantly arranged in the concrete basement bottom plate 2, the upper end of the bottom plate embedded part 3 is exposed from the concrete basement bottom plate 2, and the upper end of the bottom plate embedded part 3 is connected and fixed with the upper anchoring seat 5. The deep hole 4 penetrates the upper anchoring seat 5 and the concrete basement bottom plate 2 and extends into the soil body 1, and the anti-floating anchor rod 6 is inserted into the deep hole 4.
[0026] The lower end of the anti-floating anchor rod 6 is sleeved with a metal sleeve 10, a plurality of bifurcated parts 12 are formed at the lower end of the metal sleeve 10, and the lower part of the metal sleeve 10 is divided into a plurality of expanded head pieces 11 by the bifurcated parts 12. The bottom fixing ring 8 is sleeved on the upper end of the anti-floating anchor rod 6 and the metal sleeve 10, and the support connecting rod 7 is fixedly connected between the bottom fixing ring 8 and the upper anchoring seat 5. The bottom fixing ring 8 limits the upward sliding of the metal sleeve 10.
[0027] In order to enable the lower end of the anti-floating anchor rod 6 to expand the expanded head pieces 11 at the lower part of the metal sleeve 10 outward during the upward tensioning of the anti-floating anchor rod 6, the lower end of the anti-floating anchor rod 6 is thickened, and the metal sleeve 10 is arranged as a tapered sleeve with a smaller diameter at the upper end than at the lower end. An external thread is formed at the upper end of the anti-floating anchor rod 6 and a locking nut 13 is screwed thereon, so that the anti-floating anchor rod 6 is tensioned upward, and the thickened part at the lower end of the anti-floating anchor rod 6 extrudes the plurality of expanded head pieces 11 at the lower part of the metal sleeve 10 to expand the expanded head pieces 11 outward.
[0028] In the installation process of the present application, the support connecting rod 7 is fixedly connected between the upper anchoring seat 5 and the bottom fixing ring 8, then the upper anchoring seat 5, the bottom fixing ring 8 and the support connecting rod 7 are sleeved on the anti-floating anchor rod 6 as a whole, the bottom fixing ring 8 is further sleeved, then the metal sleeve 10 is sleeved on the anti-floating anchor rod 6, and finally the lower end of the anti-floating anchor rod 6 is thickened.
[0029] The anti-floating anchor rod 6 is tensioned upward, and the thickened part at the lower end of the anti-floating anchor rod 6 extrudes the plurality of expanded head pieces 11 at the lower part of the metal sleeve 10 to expand the expanded head pieces 11 outward during the upward tensioning of the anti-floating anchor rod 6, so that the expanded head pieces 11 extend into the soil body 1, the force bearing area between the expanded head pieces 11 and the bottom soil body is increased, and the anchoring performance is improved, so that the anchoring performance of the anti-floating anchor rod 6 is higher and better. After grouting treatment in the later stage, the anti-floating anchoring performance is further enhanced.
[0030] The above is a further detailed description of the present application in combination with the specific embodiments, and the specific embodiments of the present application should not be considered as being limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, various simple replacements, improvements and changes can be made without departing from the concept of the present application, and the various simple replacements, improvements and changes made should be considered as belonging to the protection scope of the present application.
Claims
1. An anti-floating anchor rod reinforcing structure, comprising a soil body (1), a concrete underground chamber bottom plate (2) is horizontally cast on the soil body (1), characterized in that: The basement floor (2) is embedded with a plurality of floor embedded parts (3) arranged at equal intervals, the upper end of the floor embedded part (3) exposed from the basement floor (2) is connected and fixed with an upper anchoring seat (5), the upper anchoring seat (5) is provided with a through hole deep hole (4), the deep hole (4) penetrates the basement floor (2) and penetrates into the soil body (1), an anti-floating anchor rod (6) is inserted into the deep hole (4), the lower end of the anti-floating anchor rod (6) is sleeved with an annular expansion structure (9), a supporting structure is arranged between the annular expansion structure (9) and the upper anchoring seat (5), and a prestressed locking structure is arranged between the upper end of the anti-floating anchor rod (6) and the upper anchoring seat (5).
2. An anti-floating anchor reinforcement structure according to claim 1, characterized in that: The annular expansion structure (9) comprises a metal sleeve (10), an expanded head piece (11) and a bifurcated part (12), a plurality of bifurcated parts (12) are arranged at the lower end of the metal sleeve (10), and the bifurcated parts (12) divide the lower part of the metal sleeve (10) into a plurality of expanded head pieces (11).
3. An anti-float anchor reinforcement structure according to claim 2, wherein: The metal sleeve (10) is a conical sleeve, the upper end diameter of the conical sleeve is smaller than the lower end diameter.
4. An anti-float anchor reinforcement structure according to claim 1, characterized in that: The supporting structure comprises a supporting connecting rod (7) and a bottom fixing ring (8), the deep hole (4) in the soil body (1) is provided with the bottom fixing ring (8), the bottom fixing ring (8) is located at the upper end of the metal sleeve (10) and blocks the upward sliding of the metal sleeve (10), and the supporting connecting rod (7) is connected and fixed between the bottom fixing ring (8) and the upper anchoring seat (5).
5. An anti-float anchor reinforcement structure according to claim 1, wherein: The lower end of the anti-floating anchor rod (6) is thickened.
6. An anti-float anchor reinforcement structure according to claim 1, wherein: The prestressed locking structure is a locking nut (13), and the locking nut (13) is installed on the external thread end of the upper end of the anti-floating anchor rod (6).