CN216893755U - Mountain area combination formula transmission tower encloses anchor pier foundation structure - Google Patents
Mountain area combination formula transmission tower encloses anchor pier foundation structure Download PDFInfo
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- CN216893755U CN216893755U CN202220237933.2U CN202220237933U CN216893755U CN 216893755 U CN216893755 U CN 216893755U CN 202220237933 U CN202220237933 U CN 202220237933U CN 216893755 U CN216893755 U CN 216893755U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 238000004873 anchoring Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 11
- 238000009933 burial Methods 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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Abstract
The utility model discloses a mountain combined type power transmission tower surrounding anchor pier foundation structure which comprises an expansion head positioned at the bottom of a power transmission tower support, wherein a pier type short pile foundation is arranged below the expansion head, the expansion head and the pier type short pile foundation are in a T-shaped structure, anchor rods are arranged around the pier type short pile foundation, the lower end of each anchor rod extends downwards out of the lower end surface of the pier type short pile foundation, the upper end of each anchor rod penetrates through the upper end of the expansion head and then is fixedly connected with the section of the expansion head, a combined type surrounding anchor pier foundation is formed, and then the combined type surrounding anchor pier foundation is fixedly connected with the bottom of the power transmission tower support through anchor bolts. The utility model has simple structure, reduces the foundation burial depth and is suitable for small-sized mechanized construction in mountainous areas.
Description
Technical Field
The utility model relates to the technical field of power transmission towers, in particular to a mountainous area combined type power transmission tower surrounding anchor pier foundation structure.
Background
For the mountainous area transmission line engineering, due to the restriction of terrain and geological conditions, the conventional basic model selection mainly adopts artificial hole digging and has larger burial depth. In recent years, due to frequent safety accidents caused by manual hole digging foundations, economic losses of different degrees and even casualties are caused. At present, the foundation construction in mountain areas still stays in a state of 'manpower is main and machinery is auxiliary', the construction efficiency is low, the operation safety risk of deep foundation pits is large, and the material transportation cost is high.
The existing research results mainly aim at rock anchor rod foundations, and the existing research results are lack of research on tower positions in areas with large soil covering layers and broken rocks.
Chinese patent CN111593757A discloses a composite foundation of a circuit tower and a square pile anchor suitable for karst regions, the center of the composite foundation is a pile foundation, around the pile foundation are anchor rod foundations arranged around the pile foundation and plate-type reinforcement cages located in the middle of the pile foundation and including a surrounding pile foundation, a structure shaped like a Chinese character 'hui' is formed on the cross section, wherein the plate-type reinforcement cages are connectors of the pile foundation and the anchor rods and are used as bearing platforms at the same time, and the pile foundation and the plate-type anchor rod foundations are connected to form a unified whole through concrete pouring, so as to provide bearing capacity for the pile foundation. The composite foundation structure mainly aims at the geological structure with multiple karst caves in the karst region, is complex in structure, is not suitable for large soil covering layers in mountain regions, and is large in construction difficulty in rock breaking regions.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides the mountainous area combined type power transmission tower surrounding anchor pier foundation structure which is simple in structure, capable of reducing the foundation burial depth and suitable for small-sized mechanized construction in mountainous areas.
In order to achieve the purpose, the utility model provides a mountain combined type power transmission tower surrounding anchor pier foundation structure which comprises an expansion head located at the bottom of a power transmission tower support, wherein a pier type short pile foundation is arranged below the expansion head, the expansion head and the pier type short pile foundation are in a T-shaped structure, anchor rods are arranged around the pier type short pile foundation, the lower end of each anchor rod extends downwards out of the lower end face of the pier type short pile foundation, the upper end of each anchor rod penetrates through the upper end of the expansion head and then is anchored with the expansion head to form a combined type surrounding anchor pier foundation, and the combined type surrounding anchor pier foundation is fixedly connected with the bottom of the power transmission tower support through a second anchoring bolt.
Furthermore, an anchoring hole is formed in the enlarged head, and the anchor rod penetrates through the anchoring hole and then is fixedly connected with the end portion of the enlarged head through a first anchoring bolt.
Furthermore, the outer wall of the anchor rod, which is positioned in the anchoring hole, is also sleeved with a corrugated pipe, and a sleeve is further sleeved between the corrugated pipe and the outer wall of the anchor rod.
Further, the enlarged footing and the pier-type stub foundation are both of a steel bar cage concrete structure.
Further, the diameter ratio of the enlarged head to the pier stub foundation is 1.5-1.8, and the diameter of the pier stub foundation is 1 m-1.8 m.
Furthermore, the height ratio of the pier-type short pile foundation to the enlarged head is 1.5-2.5, and the height of the enlarged head is less than or equal to 2 m.
Further, the height ratio of the anchor rods to the pier-type stub foundation is 2-3.
The utility model has the beneficial effects that: simple structure, reduced foundation burial depth, and suitability for small-scale mechanized construction in mountainous areas. The enlarged head and the pier-type short pile foundation are in a T-shaped structure, the anchor rods are arranged on the periphery of the pier-type short pile foundation, the bending rigidity of the anchor rods can be increased, the lower ends of the anchor rods downwards extend out of the lower end face of the pier-type short pile foundation, and the anchor rods and the pier-type short pile foundation jointly bear force, so that the diameter, the height and the concrete amount of the pier-type short pile foundation are reduced, the field-entering difficulty of construction machinery and the risk of foundation pit operation are reduced, and small-sized mechanical construction in mountainous areas is facilitated.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a partial view of the anchor rod in connection with the enlarged head as installed.
Fig. 4 is a partial view of the anchor rod and enlarged head after installation.
Fig. 5 is a perspective view of the present invention.
The components in the figures are numbered as follows: transmission tower support 1, enlarged footing 2, anchor hole 201, stock 3, pier stud basis 4, first anchor bolt 5, gasket 6, bellows 7, sleeve pipe 8, second anchor bolt 9.
Detailed Description
The following detailed description is provided to further explain the claimed embodiments of the present invention in order to make it clear for those skilled in the art to understand the claims. The scope of the utility model is not limited to the following specific examples. It is intended that the scope of the utility model be determined by those skilled in the art from the following detailed description, which includes claims that are directed to this invention.
As shown in fig. 1-5, a mountain area combination formula transmission tower encloses anchor pier foundation structure, including being located with the enlarged footing 2 of transmission tower support 1 bottom, enlarged footing 2 below is equipped with pier-type stub basis 4, enlarged footing 3 and pier-type stub basis 4 are T style of calligraphy structure, pier-type stub basis 4 is provided with stock 3 all around, the lower extreme of stock 3 stretches out pier-type stub basis 4's lower terminal surface downwards, be equipped with anchor hole 201 on the enlarged footing 2, the stock upper end passes through the upper end of anchor hole 201 after through the tip fixed connection of first anchor bolt 5 and gasket 6 with enlarged footing 2, the anchor pier foundation is enclosed through second anchor bolt 9 and transmission tower support 1 fixed connection to the combination formula that forms, can effectively guarantee the safe and stable operation of transmission tower like this.
The arrangement mode that enlarged footing and pier-type stub foundation adopted the T style of calligraphy can show the stake footpath that reduces pier-type stub foundation to reduce the concrete volume of pier-type stub foundation, improve engineering economic benefits. The utility model utilizes the bearing capacity of the anchor rod foundation to the maximum extent, and the anchor rod foundation is arranged around the pier-type short pile, so that the bending rigidity of the anchor rod can be effectively increased, and the bending bearing capacity of the anchor rod is improved. The combined surrounding anchor pier foundation jointly bears the uplift force, the downforce and the horizontal force of the foundation through the pier-type short pile foundation and the anchor rod foundation, the design embedding depth of the foundation is effectively reduced, the difficulty of the approach of construction machinery and the risk of deep foundation pit operation are reduced, the application range is wide, and the mechanized construction in mountainous areas is facilitated to be promoted.
As a preferred embodiment, the outer wall of the anchor rod 3 in the anchoring hole 201 is further sleeved with a corrugated pipe 7, a sleeve 8 is further sleeved between the corrugated pipe 7 and the outer wall of the anchor rod 3, and the sleeve 8 is drawn out after the anchor rod 2 is drilled. The sawtooth shape outside the corrugated pipe increases the mechanical snap-in force between the enlarged head and the anchor rod foundation, and the steel sleeve is arranged to play a role in protecting the anchor rod during drilling, so that the influence on the corrugated pipe during drilling of the anchor rod can be prevented.
As a preferred embodiment, the enlarged head 2 and the pier-type stub foundation 4 are both of a steel bar cage concrete structure. Thus, the foundation of the enlarged head and the pier-type stub is very firm.
In a preferred embodiment, the diameter ratio of the enlarged head 2 to the pier foundation 4 is 1.5 to 1.8, and the diameter of the pier foundation 4 is 1 to 1.8 m. The height ratio of the pier-type short pile foundation 4 to the enlarged head 2 is 1.5-2.5, and the height of the enlarged head 2 is less than or equal to 2 m. The height ratio of the anchor rods 3 to the pier-type stub 4 is 2 to 3. The T-shaped structure formed by the enlarged head and the pier-type short pile foundation is reasonable in size proportion, the structural strength of the whole anchor pier foundation meets the requirement, the diameter and the height of the pier-type short pile can be reduced, and therefore the structure is simplified and the concrete consumption is reduced.
The construction process of the utility model is as follows:
firstly, excavating a pile hole of a pier-type short pile foundation 4, putting a reinforcement cage of the pier-type short pile foundation 4 into the pile hole, embedding a second anchor bolt 9 in advance, pouring concrete in the reinforcement cage and curing to form the pier-type short pile foundation 4; then uniformly arranging a plurality of vertically-arranged anchor rods 3 around the pier-type short pile foundation 4, continuously arranging a reinforcement cage with a larger diameter above the pier-type short pile foundation 4, pouring, and externally expanding to form an expanded head 2; after the maintenance of the expanded head is finished, a first anchoring bolt 5 is embedded in the expanded head 2 in advance, and a gasket 6 is arranged between the first anchoring bolt 5 and the expanded head 2; one end of an anchor rod 3 is embedded into the enlarged head 2, a corrugated pipe 7 is arranged on the outer side of the anchor rod 3, a sleeve 8 is arranged on the inner side of the corrugated pipe 7, and anchor rod drilling is carried out; after the anchoring hole 201 is drilled, the sleeve 8 is drawn out, the situation that the side friction resistance of the anchor rod is weakened by the sleeve 8 with the smooth inner wall is avoided, then grouting is conducted in the anchoring hole 201, finally, the upper end of the anchor rod 2 and the section of the expansion head 2 are anchored, and then the combined surrounding anchor pier foundation formed after anchoring is fixedly connected with the power transmission tower support 1 through the second anchoring bolt 9.
Claims (7)
1. The utility model provides a mountain area combination formula transmission tower encloses anchor pier foundation structure which characterized in that: including being located with enlarged footing (2) of transmission tower support (1) bottom, enlarged footing (2) below is equipped with pier-type stub basis (4), enlarged footing (2) with pier-type stub basis (4) are T style of calligraphy structure, be provided with stock (3) around pier-type stub basis (4), the lower extreme of stock (3) stretches out the lower terminal surface of pier-type stub basis (4) downwards, and the upper end is passed and is carried out the anchor with enlarged footing (2) after the upper end of enlarged footing (2) and form the combination formula and enclose anchor pier basis, the combination formula encloses the bottom fixed connection of anchor pier basis through second anchor bolt (9) and transmission tower support (1).
2. The mountain area combination type power transmission tower anchor pier foundation structure of claim 1, wherein: the anchor rod (3) penetrates through the anchoring hole (201) and then is fixedly connected with the end of the enlarged head (2) through a first anchoring bolt (5).
3. The mountain area combined type power transmission tower surrounding anchor pier foundation structure as claimed in claim 2, wherein: be located anchor hole (201) stock (3) outer wall still overlaps and is equipped with bellows (7), it is equipped with sleeve pipe (8) still to overlap between bellows (7) and stock (3) outer wall.
4. The mountain area combination type power transmission tower anchor pier foundation structure of claim 1, wherein: the enlarged head (2) and the pier-type short pile foundation (4) are both of a steel bar cage concrete structure.
5. The mountain area combination type power transmission tower anchor pier foundation structure of claim 1, wherein: the diameter ratio of the enlarged head (2) to the pier-type stub foundation (4) is 1.5-1.8, and the diameter of the pier-type stub foundation (4) is 1-1.8 m.
6. The mountain area combination type power transmission tower anchor pier foundation structure of claim 1, wherein: the height ratio of the pier-type short pile foundation (4) to the enlarged head (2) is 1.5-2.5, and the height of the enlarged head (2) is less than or equal to 2 m.
7. The mountain area combination type power transmission tower anchor pier foundation structure of claim 1, wherein: the height ratio of the anchor rods (3) to the pier-type short pile foundation (4) is 2-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237933.2U CN216893755U (en) | 2022-01-28 | 2022-01-28 | Mountain area combination formula transmission tower encloses anchor pier foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237933.2U CN216893755U (en) | 2022-01-28 | 2022-01-28 | Mountain area combination formula transmission tower encloses anchor pier foundation structure |
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| Publication Number | Publication Date |
|---|---|
| CN216893755U true CN216893755U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220237933.2U Active CN216893755U (en) | 2022-01-28 | 2022-01-28 | Mountain area combination formula transmission tower encloses anchor pier foundation structure |
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| Country | Link |
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| CN (1) | CN216893755U (en) |
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- 2022-01-28 CN CN202220237933.2U patent/CN216893755U/en active Active
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Address after: 430040 1 new bridge four, Jin Yin Hu Street, Dongxihu District, Wuhan, Hubei Patentee after: Hubei Electric Power Planning, Design and Research Institute Co.,Ltd. Address before: 430040 1 new bridge four, Jin Yin Hu Street, Dongxihu District, Wuhan, Hubei Patentee before: POWERCHINA HUBEI ELECTRIC ENGINEERING Corp.,Ltd. |