CN204676586U - A kind of suction barrel shape transmission line foundation - Google Patents
A kind of suction barrel shape transmission line foundation Download PDFInfo
- Publication number
- CN204676586U CN204676586U CN201520239286.9U CN201520239286U CN204676586U CN 204676586 U CN204676586 U CN 204676586U CN 201520239286 U CN201520239286 U CN 201520239286U CN 204676586 U CN204676586 U CN 204676586U
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- Prior art keywords
- steel drum
- transmission line
- foundation
- shallow water
- water area
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000010276 construction Methods 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The utility model discloses the suction barrel shape transmission line foundation of a kind of shallow water area power transmission tower.At the transmission line of electricity in shallow water area, adopt current foundation pattern, construct more complicated on the one hand and there is environmental issue, the expense in cofferdam considerably increases the cost on basis on the other hand.Of the present utility modelly to be characterised in that, it is made up of bottom steel drum and upper reinforcement concrete bearing platform, the lower openings of steel drum, the top seal of steel drum forms a horizontal top, described horizontal top is reserved with at least three crab-bolts and an aspirating hole, between described steel drum and reinforced concrete pile cap, utilizes crab-bolt reliably to connect.The utility model provides the foundation pattern of a kind of easy construction and environmental protection, is applicable to the power transmission tower in shallow water area, solves the power transmission tower foundation construction inconvenience and the problem of environmental protection not that are in shallow water area.
Description
Technical field
The utility model relates to the suction barrel shape transmission line foundation of a kind of shallow water area power transmission tower, is applicable to the shaft tower that basic role power is of moderate size.
Background technology
Be positioned at the transmission tower on shallow water area (the shallow water pool etc.), according to its basic role power size and geological condition, normal adopt the base forms such as board-like, rigidity and castinplace pile.
When adopting board-like, rigid foundation, need to excavate the soil body, large cofferdam certainly will be needed, have certain destruction to the ecology in pool.When adopting bored concrete pile foundation, due to the construction of drilling machine, need equally to carry out cofferdam, the mud simultaneously in work progress is also a threat to the environment in pool, place.Therefore at the transmission line of electricity in shallow water area, adopt current foundation pattern, construct more complicated on the one hand and there is environmental issue, the expense in cofferdam considerably increases the cost on basis on the other hand.
Utility model content
Technical problem to be solved in the utility model is the defect overcoming the existence of above-mentioned prior art, there is provided a kind of suction barrel shape transmission line foundation being applicable to shallow water area power transmission tower, to solve the power transmission tower foundation construction inconvenience and the problem of environmental protection not that are in shallow water area.
For this reason, the utility model adopts following technical scheme: a kind of suction barrel shape transmission line foundation, it is characterized in that, it is made up of bottom steel drum and upper reinforcement concrete bearing platform, the lower openings of steel drum, the top seal of steel drum forms a horizontal top, described horizontal top is reserved with at least three crab-bolts and an aspirating hole, utilizes crab-bolt reliably to connect between described steel drum and reinforced concrete pile cap.
First by steel drum hoisted in position during construction, it sinks down into certain depth at Gravitative Loads, then the water utilizing water pump to be extracted out in steel drum by aspirating hole is gentle, making to form negative pressure in steel drum is pressed in soil by steel drum, until steel drum cavity is filled up by soil, follow-uply build top cushion cap (now aspirating hole is by Concrete Filled) again.Reserved crab-bolt is utilized reliably to connect between steel drum and upper reinforcement concrete bearing platform.Main load parts based on described steel drum, provide foundation bearing capacity by the frictional force of bucket wall and the subgrade reaction of horizontal top bottom.
Further, the bottom of described reinforced concrete pile cap is up-small and down-big taper type, and top basic stand column is cylindrical.
Further, the external diameter bottom described reinforced concrete pile cap is consistent with the external diameter of steel drum.
The beneficial effect that the utility model has is as follows: the utility model provides the foundation pattern of a kind of easy construction and environmental protection, is applicable to the power transmission tower in shallow water area, solves the power transmission tower foundation construction inconvenience and the problem of environmental protection not that are in shallow water area.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3-5 is work progress schematic diagram of the present utility model.
1-steel drum, 2-reinforced concrete pile cap, 3-horizontal top, 4-crab-bolt.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail.
Suction barrel shape transmission line foundation as shown in Figure 1-2, it is made up of bottom steel drum 1 and upper reinforcement concrete bearing platform 2, the lower openings of steel drum 1, the top seal of steel drum 1 forms horizontal top 3, horizontal top 3 is reserved with multiple crab-bolt 4 and an aspirating hole (not drawing in figure), between described steel drum 1 and reinforced concrete pile cap 2, utilizes crab-bolt 4 reliably to connect.
The bottom of described reinforced concrete pile cap 2 is up-small and down-big taper type, and top basic stand column is cylindrical.External diameter bottom reinforced concrete pile cap 2 is consistent with the external diameter of steel drum 1.
One. basic constructional design
(1) size design
The size design of suction bucket base, mainly comprise determine steel drum bucket footpath, height and thickness.
The size in bucket footpath directly affects the size of suction function area, and namely determine the size of down force in sinking watching, therefore first bucket footpath will ensure that the heavy of steel drum passes through.In addition, the size in bucket footpath also concerns foundation bearing capacity, therefore should meet basic role power during design.The height of bucket determines the side friction power on basis, and first it should pull out by basis, and pressing force is determined, but side friction power is also related to the problem of sinking feasibility simultaneously.Therefore, in the deterministic process of bucket footpath and height dimension, need the sinking that considers can the factor of property and basic supporting capacity.The wall thickness of steel drum, is determined by himself strength checking.
(2) negative pressure sinks to checking
Suction bucket base needs the penetration resistance overcome to be made up of the frictional resistance between sidewall and the soil body and end resistance in sinking installation process.
Suction bucket base must ensure that downward negative pressure suffered by it is greater than penetration resistance with deadweight sum, and only have when meeting this condition, suction basis could sink to be passed through until precalculated position.
k
st≥1.05
k
st＝(N
k+G
1k-F
fw,k)/F
fk
In formula
K
stfor subsidence factor;
N
kdownward suction (negative pressure) suffered by bucket, N;
G
1kfor steel drum deadweight standard value, N;
F
fw, kfor the uplift pressure standard value of water in sinking watching, N;
F
fkbucket wall medial and lateral side friction standard value sum, N.
(3) foundation bearing capacity
(a) upper and low approximations
When bucket base pulling out inefficacy, the soil body Chang Huiyu bucket in bucket together on pull out.The upper and low approximations on suction bucket basis, considers the main side friction and the basis deadweight that rely on bucket outer wall.
B () presses down bearing capacity
The bearing capacity that presses down of suction bucket base considers the side friction of the inside and outside wall of bucket and the subgrade reaction of bucket top board bottom.
Two. construction sequence
(1) steel drum prefabricated (horizontal top has reserved crab-bolt and aspirating hole), is shown in Fig. 3;
(2) steel drum hoisted in position;
(3) steel drum deadweight is sunk, and builds top watertight shutter, sees Fig. 4;
(4) water extracting bucket out heavy is gentle, and steel drum negative pressure is sunk, and sees Fig. 5;
(5) top cushion cap is built.
Claims (3)
1. a suction barrel shape transmission line foundation, it is characterized in that, it is made up of bottom steel drum (1) and upper reinforcement concrete bearing platform (2), the lower openings of steel drum (1), the top seal of steel drum (1) forms a horizontal top (3), described horizontal top (3) is reserved with at least three crab-bolts (4) and an aspirating hole, between described steel drum (1) and reinforced concrete pile cap (2), utilizes crab-bolt (4) reliably to connect.
2. suction barrel shape transmission line foundation according to claim 1, is characterized in that, the bottom of described reinforced concrete pile cap (2) is up-small and down-big taper type, and top basic stand column is cylindrical.
3. suction barrel shape transmission line foundation according to claim 1, is characterized in that, the external diameter of described reinforced concrete pile cap (2) bottom is consistent with the external diameter of steel drum (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520239286.9U CN204676586U (en) | 2015-04-20 | 2015-04-20 | A kind of suction barrel shape transmission line foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520239286.9U CN204676586U (en) | 2015-04-20 | 2015-04-20 | A kind of suction barrel shape transmission line foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204676586U true CN204676586U (en) | 2015-09-30 |
Family
ID=54176291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520239286.9U Active CN204676586U (en) | 2015-04-20 | 2015-04-20 | A kind of suction barrel shape transmission line foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204676586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332387A (en) * | 2015-11-25 | 2016-02-17 | 国网浙江省电力公司 | Large transmission tower suction type barrel-shaped foundation structure and construction method |
-
2015
- 2015-04-20 CN CN201520239286.9U patent/CN204676586U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332387A (en) * | 2015-11-25 | 2016-02-17 | 国网浙江省电力公司 | Large transmission tower suction type barrel-shaped foundation structure and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Zhejiang economic and Technical Research Institute of Zhejiang Electric Co., Ltd. Patentee after: State Grid Zhejiang Electric Power Company Economic Technical Institute Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Zhejiang Zhedian Economic Technology Research Institute Patentee before: State Grid Zhejiang Electric Power Company Economic Technical Institute Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Zhejiang Huayun Electric Power Engineering Design Consulting Co., Ltd. Patentee after: State Grid Zhejiang Electric Power Company Economic Technical Institute Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Zhejiang economic and Technical Research Institute of Zhejiang Electric Co., Ltd. Patentee before: State Grid Zhejiang Electric Power Company Economic Technical Institute |