CN113186970A - Step type anchor rod foundation - Google Patents
Step type anchor rod foundation Download PDFInfo
- Publication number
- CN113186970A CN113186970A CN202110643544.XA CN202110643544A CN113186970A CN 113186970 A CN113186970 A CN 113186970A CN 202110643544 A CN202110643544 A CN 202110643544A CN 113186970 A CN113186970 A CN 113186970A
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- CN
- China
- Prior art keywords
- foundation
- plate
- bearing
- iron tower
- bearing platform
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The invention discloses a step anchor rod foundation, which comprises: the bearing platform is a plate-shaped structure which is horizontally arranged in the foundation pit, the locking piece vertically penetrates through the foundation pit downwards, and the locking piece is connected with the bottom of the bearing platform. When the stepped anchor rod foundation provided by the invention is used, the support legs of the iron tower can be arranged on the bearing platform, the bearing platform can effectively bear the downward pressure applied by the iron tower, and the contact area between the bearing platform and the support legs is effectively increased because the bearing platform is of a plate-shaped structure horizontally arranged in the foundation pit, so that the phenomenon of damage when the bearing platform is extruded downwards is avoided, and the phenomenon of collapse of the iron tower is further avoided. Meanwhile, the locking piece vertically and downwards penetrates through the foundation pit and is connected with the bottom of the bearing platform, so that the upward pulling force applied by the iron tower can be effectively borne, the locking piece and the bearing platform are prevented from being upwards pulled by the iron tower, and the iron tower is prevented from overturning.
Description
Technical Field
The invention relates to the technical field of wire conveying iron towers, in particular to a step type anchor rod foundation.
Background
In the prior art, a tower body of an iron tower for transmitting electric wires is usually installed on a foundation at the bottom, the foundation comprises a bearing platform for supporting the tower body, and the iron tower generally has four support legs, and each support leg is correspondingly installed on the bearing platform. The foundation usually needs to bear two loads, namely, the uplift force and the downforce of the iron tower, for example, when the iron tower is blown by strong wind, the iron tower tends to incline to the left if the blowing direction of natural wind is the direction indicated by the arrow in fig. 1, at this time, the bearing platform on the left side of the iron tower can bear the downforce applied to the iron tower, and the bearing platform on the right side of the iron tower can bear the uplift force applied to the iron tower by the iron tower.
At present, in order to make the foundation meet the load bearing capacity, the structure of the foundation is generally set as shown in fig. 2, and the construction process is as follows: firstly, excavating a foundation pit, then pouring concrete in the foundation pit to form a concrete bearing platform, correspondingly installing support legs of the iron tower on the concrete bearing platform, and finally backfilling the concrete. In order to make the bearing platform effectively bear the load of the iron tower, the volume of the concrete bearing platform is required to be large enough to make the bearing platform resist various loads of the iron tower, and the concrete consumption is huge, and the raw material cost and the construction cost are increased.
Moreover, after the concrete bearing platform is poured, earth is backfilled into the foundation pit to bury the concrete bearing platform, so that when the concrete bearing platform is reinforced, if the backfilled earth is soft, the reinforcing effect on the concrete bearing platform is weak, the bearing platform cannot effectively resist various loads of the iron tower, and the phenomenon that the iron tower topples or collapses is easy to occur.
In summary, how to improve the bearing capacity of the foundation to the iron tower is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a stepped anchor rod foundation, which can improve the bearing capacity of the foundation on an iron tower, and avoid collapse and overturn of the foundation and the iron tower.
In order to achieve the above purpose, the invention provides the following technical scheme:
a stepped bolt foundation comprising: foundation pit, the cushion cap that is used for bearing the overdraft of iron tower and be used for bearing the retaining member of the last pulling force of iron tower, the cushion cap is located for the level platelike structure in the foundation pit, the retaining member passes perpendicularly downwards the foundation pit, just the retaining member with the bottom of cushion cap is connected.
Preferably, the bearing platform comprises a first bearing plate arranged in the foundation pit and a second bearing plate arranged on the first bearing plate, and the area of the second bearing plate is smaller than that of the first bearing plate.
Preferably, the first bearing plate is a square plate with the length and width of 2m and the height of 0.3m, and the second bearing plate is a square plate with the length and width of 1.5m and the height of 0.3 m.
Preferably, a bearing column is vertically arranged at the center of the second bearing plate and is used for connecting the iron tower and the bearing platform.
Preferably, the foundation pit further comprises a waterproof cofferdam for preventing rainwater from entering the foundation pit, and the waterproof cofferdam is arranged around the top periphery of the foundation pit.
Preferably, a first vertical rib is vertically arranged in the first bearing plate, and a second vertical rib is vertically arranged in the second bearing plate.
Preferably, the locking member is an anchor rod for anchoring with underground rock, and the upper end of the anchor rod is exposed out of the foundation pit to be connected with the first bearing plate.
Preferably, the anchor rods are uniformly arranged along the circumference of the first platform plate.
Preferably, the foundation pit further comprises a concrete part for pouring the foundation pit, and the concrete part is used for integrating the anchor rod, the bearing platform and the supporting legs of the iron tower.
When the stepped anchor rod foundation provided by the invention is used, the support legs of the iron tower can be arranged on the bearing platform, the bearing platform can effectively bear the downward pressure applied by the iron tower, and the contact area between the bearing platform and the support legs is effectively increased because the bearing platform is of a plate-shaped structure horizontally arranged in the foundation pit, so that the phenomenon of damage when the bearing platform is extruded downwards is avoided, and the phenomenon of collapse of the iron tower is further avoided. Meanwhile, the locking piece vertically and downwards penetrates through the foundation pit and is connected with the bottom of the bearing platform, so that the upward pulling force applied by the iron tower can be effectively borne, the locking piece and the bearing platform are prevented from being upwards pulled by the iron tower, and the iron tower is prevented from overturning.
In conclusion, the stepped anchor rod foundation provided by the invention can improve the bearing capacity of the foundation on an iron tower and avoid the collapse and overturn phenomena of the foundation and the iron tower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an assembly schematic diagram of a stepped anchor rod foundation and an iron tower provided by the invention;
FIG. 2 is a schematic half-sectional view of a stepped anchor foundation;
FIG. 3 is a half-section top view of FIG. 2;
fig. 4 is a schematic view of the arrangement of the anchor rods.
In fig. 1-4:
1 is an iron tower, 2 is a bearing platform, 21 is a first bearing platform plate, 22 is a second bearing platform plate, 23 is a bearing platform column, 24 is a first stud, 25 is a second stud, 3 is a locking piece and 4 is a foundation bottom surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a stepped anchor rod foundation, which can improve the bearing capacity of the foundation on an iron tower and avoid the collapse and overturn phenomena of the foundation and the iron tower.
Referring to fig. 1 to 4, fig. 1 is a schematic view illustrating an assembly of a stepped anchor rod foundation and an iron tower according to the present invention; FIG. 2 is a schematic half-sectional view of a stepped anchor foundation; FIG. 3 is a half-section top view of FIG. 2; fig. 4 is a schematic view of the arrangement of the anchor rods.
This concrete embodiment provides a step stock basis, includes: foundation pit, the retaining member 3 that is used for bearing the cushion cap 2 of the overdraft of iron tower 1 and is used for bearing the power of pulling up of iron tower 1, platelike structure in foundation pit is located for the level to cushion cap 2, and the perpendicular downward foundation pit that passes of retaining member 3, and retaining member 3 is connected with the bottom of cushion cap 2.
It should be noted that, the stepped anchor rod foundation includes two parts, which are an upper bearing platform foundation part and a lower locking member foundation part, respectively, the structure of the upper bearing platform foundation part is similar to that of a concrete bearing platform in the prior art, and the lower locking member foundation part is similar to that of an anchor rod part in the prior art, that is, the stepped anchor rod foundation provided by the present invention can combine the advantages of the concrete bearing platform and the anchor rod part, so as to effectively improve the bearing capacity of the foundation on the iron tower 1.
The shape, structure, size, material, position and the like of the bearing platform 2 and the locking member 3 can be determined according to actual conditions and actual requirements in the actual application process.
When the stepped anchor rod foundation provided by the invention is used, the support legs of the iron tower 1 can be arranged on the bearing platform 2, the bearing platform 2 can effectively bear the downward pressure applied by the iron tower 1, and the bearing platform 2 is of a plate-shaped structure horizontally arranged in the foundation pit, so that the contact area between the bearing platform 2 and the support legs is effectively increased, the phenomenon of damage when the bearing platform 2 is extruded downwards is avoided, and the phenomenon of collapse of the iron tower 1 is further avoided. Meanwhile, the locking piece 3 vertically penetrating through the foundation pit downwards and connected with the bottom of the bearing platform 2 can effectively bear the upward pulling force applied by the iron tower 1, so that the locking piece 3 and the bearing platform 2 are prevented from being pulled upwards by the iron tower 1, and the phenomenon that the iron tower 1 topples is avoided.
In conclusion, the stepped anchor rod foundation provided by the invention can improve the bearing capacity of the foundation on the iron tower 1 and avoid the collapse and overturn phenomena of the foundation and the iron tower 1.
In addition to the above embodiment, the platform 2 preferably includes a first platform plate 21 provided in the foundation pit and a second platform plate 22 provided on the first platform plate 21, and the area of the second platform plate 22 is smaller than the area of the first platform plate 21.
It should be noted that the first bearing plate 21 and the second bearing plate 22 may form a step-shaped bearing plate, and the step-shaped bearing plate is in surface contact with the ground, and can bear a large downward pressure, and has a good lateral stability and is not prone to side-tipping. Moreover, the bearing platform 2 is matched with the locking piece 3, so that the structure of the step-shaped bearing platform can be effectively reduced, and the manufacturing cost of the device is reduced. Wherein, can locate the first cushion board 21 level in the basic bottom surface 4 of foundation pit, take basic bottom surface 4 as the basis again, bore the lower extreme structure of retaining member 3 downwards into the rock to be connected the upper end structure and the first cushion board 21 of retaining member 3.
Preferably, the first platform plate 21 is a square plate with a length and width of 2m and a height of 0.3m, and the second platform plate 22 is a square plate with a length and width of 1.5m and a height of 0.3 m. Compared with the original step bearing platform foundation, the first bearing platform plate 21 and the second bearing platform plate 22 provided by the invention are reduced in size, so that the manufacturing efficiency of the device can be effectively improved, and the manufacturing cost of the device can be reduced.
Preferably, a bearing column 23 is vertically arranged at the center of the second bearing plate 22, and the bearing column 23 is used for connecting the iron tower 1 and the bearing platform 2.
Preferably, the waterproof cofferdam is used for preventing rainwater from entering the foundation pit, and the waterproof cofferdam is arranged around the top periphery of the foundation pit so as to prevent rainwater and snow water from entering the foundation pit and affecting the connection effect of the first bearing plate 21, the second bearing plate 22 and the locking members 3.
Preferably, a first stud 24 is vertically arranged in the first bearing plate 21, and a second stud 25 is vertically arranged in the second bearing plate 22, so as to effectively improve the bearing capacity of the first bearing plate 21 and the second bearing plate 22.
On the basis of the above embodiment, preferably, the locking member 3 is an anchor rod for anchoring with underground rock, the upper end of the anchor rod is exposed out of the foundation pit to be connected with the first bearing plate 21, and the anchor rod can effectively bear the upward pulling force applied by the iron tower 1, so that the anchor rod and the first bearing plate 21 are prevented from being pulled upwards by the iron tower 1, and the iron tower 1 is prevented from overturning.
Preferably, the anchor rods are uniformly arranged along the peripheral portion of the first bearing plate 21, that is, the anchor rods can be uniformly arranged on four sides of the first bearing plate 21, so as to ensure that the first bearing plate 21 is not prone to side turning and can effectively bear the pull-up force of the iron tower 1.
Preferably, the foundation pit further comprises a concrete part for pouring the foundation pit, wherein the concrete part is used for integrating the anchor rod and the bearing platform 2 as well as the supporting legs of the iron tower 1.
Therefore, firstly, a foundation pit can be excavated, then an anchor rod is driven into the pit, the lower end of the anchor rod is anchored with hard rock, the upper end of the anchor rod can be exposed out of the pit surface and is connected with the first bearing plate 21, then the first bearing plate 21, the second bearing plate 22 and the bearing platform column 23 are driven into the foundation pit, the second bearing plate 22 is connected with the supporting legs of the iron tower 1 through the bearing platform column 23, then concrete is poured into the foundation pit, the upper end of the anchor rod, the first bearing plate 21, the second bearing plate 22, the bearing platform column 23 and the supporting legs can be integrated into the pit through the concrete, finally, earth is backfilled into the foundation pit, and the foundation pit is filled.
It should also be noted that the stepped anchor foundation provided by the present invention mainly comprises an upper concrete stepped foundation portion and a lower anchor foundation portion, wherein the upper concrete stepped foundation portion is similar in structure to a concrete cap in the prior art, and the lower anchor foundation portion is similar to an anchor member in the prior art.
The device bears the uplifting force applied by the iron tower 1 through the concrete step foundation part and the anchor rod foundation part, wherein the anchor rod is anchored with the rock, the uplifting load bearing capacity of the device can be effectively improved, so that the volume of the concrete step foundation part can be reduced under the condition of the same load, and further the concrete consumption of the concrete step foundation part is reduced.
In addition, the device can bear the downward pressure together through the matching of the anchor rod base part and the step base part. Compare in adopting the stock alone, because step basis part and ground are the face contact, step basis part also can bear great overdraft for this device can bear bigger overdraft, and can effectively protect the stock.
It should be noted that, in the present application, the first bearing plate 21 and the second bearing plate 22, and the first stud 24 and the second stud 25 are mentioned, where the first and the second are only for distinguishing the difference of the positions and are not in sequence.
In addition, it should be noted that the directions or positional relationships indicated by "upper and lower", "top and bottom", and the like in the present application are based on the directions or positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or element referred to must have a specific direction, be configured and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The stepped anchor rod foundation provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A step stock basis, its characterized in that includes: foundation pit, be used for bearing cushion cap (2) of the holding down force of iron tower (1) and be used for bearing retaining member (3) of the last pulling force of iron tower (1), cushion cap (2) are located for the level platelike structure in the foundation pit, retaining member (3) pass perpendicularly downwards the foundation pit, just retaining member (3) with the bottom of cushion cap (2) is connected.
2. A stepped bolt foundation according to claim 1, wherein the cap (2) comprises a first cap plate (21) disposed within the foundation pit and a second cap plate (22) disposed on the first cap plate (21), the second cap plate (22) having an area smaller than the area of the first cap plate (21).
3. The stepped anchor foundation of claim 2, wherein the first bearing plate (21) is a square plate with a length and width of 2m and a height of 0.3m, and the second bearing plate (22) is a square plate with a length and width of 1.5m and a height of 0.3 m.
4. A stepped bolt foundation according to claim 2, wherein a bearing column (23) is vertically arranged at the center of the second bearing plate (22), and the bearing column (23) is used for connecting the iron tower (1) and the bearing platform (2).
5. A stepped anchor foundation according to claim 2, further including a watertight cofferdam for preventing rain water from entering the foundation pit, the cofferdam being disposed around the top periphery of the foundation pit.
6. A stepped bolt foundation according to claim 2, wherein a first stud (24) is vertically provided in said first deck plate (21) and a second stud (25) is vertically provided in said second deck plate (22).
7. A stepped anchor foundation according to any one of claims 2 to 6, wherein the locking member (3) is an anchor for anchoring with underground rock, the upper end of the anchor being exposed out of the foundation pit for connection with the first deck plate (21).
8. A stepped bolt foundation according to claim 7, wherein the bolts are evenly arranged along the circumference of the first deck plate (21).
9. A stepped bolt foundation according to claim 7, further including a concrete member for casting the foundation pit for integrating the bolt with the bearing platform (2) and the legs of the tower (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110643544.XA CN113186970A (en) | 2021-06-09 | 2021-06-09 | Step type anchor rod foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110643544.XA CN113186970A (en) | 2021-06-09 | 2021-06-09 | Step type anchor rod foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113186970A true CN113186970A (en) | 2021-07-30 |
Family
ID=76976351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110643544.XA Withdrawn CN113186970A (en) | 2021-06-09 | 2021-06-09 | Step type anchor rod foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113186970A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818746A (en) * | 2021-09-30 | 2021-12-21 | 峻江建设有限公司 | Iron tower applied to plateau mountain area |
-
2021
- 2021-06-09 CN CN202110643544.XA patent/CN113186970A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818746A (en) * | 2021-09-30 | 2021-12-21 | 峻江建设有限公司 | Iron tower applied to plateau mountain area |
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| PB01 | Publication | ||
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Application publication date: 20210730 |