CN105332387B - A kind of large size transmission tower Blade fence structure and construction method - Google Patents
A kind of large size transmission tower Blade fence structure and construction method Download PDFInfo
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- CN105332387B CN105332387B CN201510830814.2A CN201510830814A CN105332387B CN 105332387 B CN105332387 B CN 105332387B CN 201510830814 A CN201510830814 A CN 201510830814A CN 105332387 B CN105332387 B CN 105332387B
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- barrel
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- blade fence
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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
Abstract
A kind of large size transmission tower Blade fence structure and construction method, it includes an at least Blade fence using being sunken under negative pressure of vacuum in bucket in the ground of network of waterways marsh, a barrel roof panel has been poured on the Blade fence top, and ring flange is embedded on this barrel of roof panel, an at least connecting pin flange in the bottom and the ring flange of a transmission tower lower part are bolted to form entirety；The construction method is：a）It transports prefabricated Blade fence to scene, forms the barrel shaped structure of a sealing；b）It is to be installed to finish, Blade fence inversion is lifted into design tower position on specified soft layer with hanging devices such as cranes, suction bucket is allowed to sink in advance under the conditions of dead weight certain depth；c）Then it is covered in portion's aspirating hole from suction bucket with aspirator vacuum equipment and extracts water in bucket and air out, and negative pressure is formed in bucket；d）After a barrel base reaches predetermined absolute altitude, it is to complete the construction of bucket base to discharge the negative pressure in bucket.
Description
Technical field
The present invention relates to a kind of Blade fence structure suitable for network of waterways soft clay area large size transmission tower and
Construction method belongs to transmission tower foundation technical field of structures.
Background technology
With the development of super-pressure and UHV transmission line, iron tower foundation load is increasing, at the same network of waterways marsh,
The quantity that tower is found in the medium deep weak subgrade region of water is also more and more, and pole is brought to Large Transmission Tower basic engineering and construction
Big challenge.The pile foundations cost such as traditional Large Bored Piles, prefabricated pile is higher, while pile foundation construction equipment is larger, in the network of waterways
Marsh region is marched into the arena many drawbacks such as difficulty, the various, long construction period of complicated construction technique, seek it is a kind of it is easy for construction, quick,
Cheap foundation pattern is very necessary for the transmission line of electricity of the Deep Thick Soft Ground Areas such as network of waterways marsh.
Invention content
It is an object of the invention to overcome the shortcomings of the prior art, provide it is a kind of it is simple in structure, construction is convenient, economical
Rationally, suitable for the Deep Thick Soft Ground Areas such as network of waterways marsh large size transmission tower Blade fence structure and construction method.
The purpose of the present invention is by following technical solution to complete：A kind of large size transmission tower Blade fence
Structure, it includes an at least Blade fence using being sunken under negative pressure of vacuum in bucket in the ground of network of waterways marsh, in the suction
Formula barrel base top has poured a barrel roof panel, and ring flange is embedded on this barrel of roof panel, a transmission tower lower part
An at least connecting pin flange in the bottom is bolted to form entirety with ring flange.
As preferred：At least four tower legs are arranged at the lower part of the transmission tower, and each tower leg is used by connected column foot plate
Bolt is fixed on the pre-buried ring flange above respective Blade fence, and forms single leg list barrel suction type barrel base knot
Structure.
As preferred：The Blade fence is arranged in a combination, and form more barrels by more suction type bucket bases
Blade fence, integral cast-in-situ has a bung platform on the multi-barrel suction type barrel base, under the transmission tower
The one connecting pin flange in the bottom in portion be bolted with the ring flange on bung platform or the transmission tower lower part at least
Four tower legs are fixed by bolts to by connected column foot plate on the pre-buried ring flange above respective Blade fence respectively,
And form single leg multi-barrel suction type barrel base structure.
A kind of construction method of large-scale transmission tower Blade fence structure as described above, the construction method are included such as
Lower step：
a）After transporting prefabricated Blade fence to scene, with special flange plate type bung caulking gum
Circle and high-strength bolt 3 are connected and sealed, and form the barrel shaped structure of a sealing；
b）It is to be installed to finish, Blade fence inversion is lifted into specified soft layer with hanging devices such as cranes
On design tower position, suction bucket is allowed to sink in advance under the conditions of dead weight certain depth；
c）Then it is covered in portion's aspirating hole from suction bucket with aspirator vacuum equipment and extracts water in bucket and air out, and in bucket
Negative pressure is formed, at this point, bucket external and internal pressure difference will overcome the frictional resistance of barrel end resistance of skirt bottom and bucket skirt wall thus by bucket base
It sinks in weak soil；
d）After a barrel base reaches predetermined absolute altitude, it is to complete the construction of bucket base to discharge the negative pressure in bucket；
e）After the completion of construction, flange plate type bung is unloaded, pours single barrel of top integral cast-in-situ bung platform and pre-buried connection
Ring flange, after platform concrete strength reaches design requirement, installation top transmission of electricity steel pipe pole and flange in the bottom, and using high-strength
It is integral that bolt makes lower part barrel base be connect with top steel tube rod structure.
As preferred：The step c）In, if occurring situations such as staving inclination in sinking watching, sinking leveling can be passed through
Device is adjusted.
As preferred：The step e）In, each one Blade fence of electric power pylon tower leg arranged beneath is treated
After the completion of Blade fence under four leg of electric power pylon is constructed, single barrel of integral cast-in-situ bucket of every suction type bucket base is poured
Lid platform and pre-buried mounting flange, after platform concrete strength reaches design requirement, install top electric power pylon tower leg and
Column foot plate, and it is integral to use bolt that lower part barrel base is made to be connect with top electric power pylon tower leg, finally continues to assemble top
Electric power pylon is until the construction of entire electric power pylon finishes.
As preferred：The step e）In, each multiple Blade fences of electric power pylon tower leg arranged beneath are treated
More combination suction type bucket bases are all after the completion of construction under single leg, you can pour more barrels of integral cast-in-situ bung platforms of single leg and pre-buried
Mounting flange so repeats；Treat that all Blade fences and cast-in-place bung platform are whole under large-scale four leg of electric power pylon
After construction finishes and concrete strength reaches design requirement, top electric power pylon tower leg and column foot plate are installed, and use high-strength spiral shell
It is integral that bolt makes lower part barrel base be connect with top electric power pylon tower leg, finally continues to assemble top electric power pylon until entire
Electric power pylon construction finishes.
According to the difference by top transmission tower type and load level, the present invention relates to：Single-column list barrel suction type is barrel-shaped
Basis, single leg list barrel suction type barrel base and single leg multi-barrel suction type three kinds of structural shapes of barrel base.Wherein, single barrel of single-column
Blade fence is suitable for the transmission line of electricity that top shaft tower is single steel pipe pole, and single leg list barrel suction type barrel base is applicable in
In the relatively small electric power pylon of load, single leg multi-barrel suction type barrel base is suitable for the larger electric power pylon of load.
By connecting flange and bolt, the lotus of toppling that the load that topples of top shaft tower can be converted on the basis of single barrel of single-column
Load and the vertical pushing on single leg single-pass, single leg multi-barrel base and uplift load.
The advantage and characteristic of patent of the present invention be：
（1）Construction equipment is simple.Blade fence work progress only needs vaccum-pumping equipment, without piling machine
Or the heavy construction equipments such as drilling machine, therefore it is particularly suitable for the swampy area of the network of waterways.
（2）Short construction period, low cost.Blade fence can carry out heavy pass through by the prefabricated scene that transports to early period later
Construction, the scene without pile foundation is constructed for a long time and curing period, thus can shorten construction period, saves cost.
（3）Blade fence has excellent resistance to plucking load-carrying properties.Ordinary pile foundation plinth is only born by pile side friction
Uplift load, but Blade fence, in addition to bucket skirt frictional resistance, negative pressure can also bear very big uplift load in bucket, and value can
Up to 5 times or more of side friction, so as to which the upper and low approximations of barrel base be significantly increased.
Description of the drawings
Fig. 1 is the status diagram after single-column list barrel base of the present invention installs.
Fig. 2 is the status diagram after single leg list barrel base of the present invention installs.
Fig. 3 is the status diagram after single leg multi-barrel base of the present invention installs.
In figure：1st, precast concrete Blade fence；2nd, single barrel of bung of single-column；3rd, high-strength bolt；4th, connecting flange
Disk；5th, flange in the bottom；6th, soft layer；7th, column foot plate；8th, single barrel of integral cast-in-situ bung platform；9th, more barrels of integral cast-in-situ bungs
Platform.
Specific embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings：Shown in Fig. 1, a kind of large-scale transmission tower of the present invention
Blade fence structure, it is included an at least precast concrete Blade fence 1 and is sunk using negative pressure of vacuum in bucket
In network of waterways marsh ground soft layer 6, a barrel roof panel has been poured on 1 top of precast concrete Blade fence, and
Mounting flange 4 is embedded on this barrel of roof panel, an at least connecting pin flange in the bottom 5 for a transmission tower lower part is with connecting
Ring flange 4 is connected by high-strength bolt 3 and forms entirety.
Shown in Fig. 2, at least four tower legs are arranged at the lower part of the transmission tower, and each tower leg is used by connected column foot plate 7
High-strength bolt 3 is fixed on the pre-buried mounting flange 4 above respective precast concrete Blade fence 1, and forms list
Leg list barrel suction type barrel base structure.
Shown in Fig. 3, the precast concrete Blade fence 1 is arranged in a combination by more suction type bucket bases,
And multi-barrel suction type barrel base is formed, integral cast-in-situ has more than one barrels of integral cast-in-situ bucket on the multi-barrel suction type barrel base
Lid platform 9, a connecting pin flange in the bottom of the transmission tower lower part be bolted with the ring flange on bung platform or
At least four tower legs of the transmission tower lower part are fixed by bolts to respective precast concrete by connected column foot plate 7 respectively
On pre-buried ring flange above Blade fence 1, and form single leg multi-barrel suction type barrel base structure.
With reference to shown in Fig. 1, a kind of large-scale transmission tower Blade fence structure as described above of the present invention
Construction method, the construction method include the following steps：
a）After transporting prefabricated precast concrete Blade fence 1 to scene, with special flange plate type bucket
Lid sealing rubber ring and high-strength bolt 3 are connected and sealed, and form the barrel shaped structure of a sealing；
b）It is to be installed to finish, Blade fence inversion is lifted into specified soft layer with hanging devices such as cranes
Design tower position on 6 allows suction bucket to sink in advance under the conditions of dead weight certain depth；
c）Then it is covered in portion's aspirating hole from suction bucket with aspirator vacuum equipment and extracts water in bucket and air out, and in bucket
Negative pressure is formed, at this point, bucket external and internal pressure difference will overcome the frictional resistance of barrel end resistance of skirt bottom and bucket skirt wall thus by bucket base
It sinks in soft layer 6；
d）After a barrel base reaches predetermined absolute altitude, it is to complete the construction of bucket base to discharge the negative pressure in bucket；
e）After the completion of construction, flange plate type bung is unloaded, pours single barrel of bung 2 of top single-column and pre-buried mounting flange 4,
After platform concrete strength reaches design requirement, installation top transmission of electricity steel pipe pole and flange in the bottom 5, and use high-strength bolt 3
Lower part barrel base is made to be connect with top steel tube rod structure integral.
The step c）In, if occurring situations such as staving inclination in sinking watching, can be carried out by sinking levelling device
Adjustment.
With reference to shown in Fig. 2, the step e）In, each one barrel-shaped base of suction type of electric power pylon tower leg arranged beneath
Plinth after the completion for the treatment of that the Blade fence under four leg of electric power pylon is constructed, pours single barrel of entirety of every suction type bucket base
Cast-in-place bung platform 8 and pre-buried mounting flange 4, after platform concrete strength reaches design requirement, installation top transmission of electricity iron
Tower tower leg and column foot plate 7, and it is integral to use high-strength bolt 3 that lower part barrel base is made to be connect with top electric power pylon tower leg, most
After continue assemble top electric power pylon until entire electric power pylon construction finish.
With reference to shown in Fig. 3, the step e）In, the barrel-shaped base of each multiple suction types of electric power pylon tower leg arranged beneath
Plinth, after the completion for the treatment of that more combination suction type bucket bases are all constructed under single leg, you can pour more barrels of integral cast-in-situ bung platforms 9 of single leg
And pre-buried mounting flange 4, so repeat；Treat that all Blade fences and more barrels of entirety show under large-scale four leg of electric power pylon
Pouring bung platform 9, all construction finishes and after concrete strength reaches design requirement, installs top electric power pylon tower leg and column foot
Plate 7, and it is integral to use high-strength bolt 3 that lower part barrel base is made to be connect with top electric power pylon tower leg, finally continues in assembling
Portion's electric power pylon is until the construction of entire electric power pylon finishes.
For ordinary pile foundation plinth, Blade fence has its significant advantage and characteristic：First, suction type
Barrel base is pre-formed, and ladle body armored concrete quality is guaranteed；It secondly, can be first with it after being positioned at barrel base scene
Dead weight preliminary sedimentation certain depth, then forms negative pressure, using in bucket base using vacuum pump toward extracardiac pumping from bucket base and in bucket base
External pressure force difference overcomes barrel end resistance of skirt bottom and the frictional resistance of bucket skirt wall, so as to which barrel base is sunk down into predetermined design mark
Height, for entire work progress without piling machine or the heavy construction equipment of drilling machine, construction is quick and project cost is cheap, is especially suitable for
The construction of waterborne and network of waterways swampy area；In addition, the negative pressure of vacuum that barrel base sinking construction is formed can effectively improve the upper of basis
Bearing capacity is pulled out, is well-adapted for the structure of larger uplift force is often born on this kind of basis to transmission tower, can effectively reduce
Basic material consumption and project cost, good economy performance.
Therefore, Blade fence will be a kind of suitable for deep Soft Soil Districts large size electric power pylons such as network of waterways marshes
Ideal basic form.
Claims (6)
1. a kind of large size transmission tower Blade fence structure, it is characterised in that：Including an at least precast concrete suction
Formula barrel base（1）Using being sunken under negative pressure of vacuum in bucket in the ground of network of waterways marsh, in the barrel-shaped base of precast concrete suction type
Plinth（1）Top has poured a barrel roof panel, and ring flange is embedded on this barrel of roof panel, and at least the one of a transmission tower lower part
Connecting pin flange in the bottom is bolted to form entirety with ring flange；
The construction method of the large size transmission tower Blade fence structure includes the following steps：
a）By prefabricated precast concrete Blade fence（1）After transporting scene to, with special flange plate type bung
With sealing rubber ring and high-strength bolt（3）It is connected and sealed, forms the barrel shaped structure of a sealing；
b）It is to be installed to finish, Blade fence inversion is lifted into specified soft layer with crane hanging component equipment（6）On
Design tower position, suction bucket is allowed to sink in advance under the conditions of dead weight certain depth；
c）Then it is covered in portion's aspirating hole from suction bucket with aspirator vacuum equipment and extracts water in bucket and air out, and formed in bucket
Negative pressure, at this point, bucket external and internal pressure difference by the frictional resistance for overcoming barrel end resistance of skirt bottom and bucket skirt wall so as to which bucket base be sunk to
Soft layer（6）In；
d）After a barrel base reaches predetermined absolute altitude, it is to complete the construction of bucket base to discharge the negative pressure in bucket；
e）After the completion of construction, flange plate type bung is unloaded, pours single barrel of bung of top single-column（2）And pre-buried mounting flange（4）,
After platform concrete strength reaches design requirement, installation top transmission of electricity steel pipe pole and flange in the bottom（5）, and using high-strength bolt
（3）Lower part barrel base is made to be connect with top steel tube rod structure integral.
2. large size transmission tower Blade fence structure according to claim 1, it is characterised in that：The power transmission rod
At least four tower legs are arranged at the lower part of tower, and each tower leg passes through connected column foot plate（7）It is fixed by bolts to respective precast concrete
Blade fence（1）On pre-buried ring flange above, and form single leg list barrel suction type barrel base structure.
3. large size transmission tower Blade fence structure according to claim 1 or 2, it is characterised in that：Described
Precast concrete Blade fence（1）It is arranged in a combination, and it is barrel-shaped to form multi-barrel suction type by more suction type bucket bases
Basis, integral cast-in-situ has a bung platform, a connection of the transmission tower lower part on the multi-barrel suction type barrel base
End flange in the bottom is bolted with the ring flange on bung platform or at least four tower legs of the transmission tower lower part point
Do not pass through connected column foot plate（7）It is fixed by bolts to respective precast concrete Blade fence（1）Pre-buried method above
On blue disk, and form single leg multi-barrel suction type barrel base structure.
4. large-scale transmission tower Blade fence structure according to claim 1, it is characterised in that：
The step c）In, if occurring staving inclination conditions in sinking watching, can be adjusted by sinking levelling device.
5. large-scale transmission tower Blade fence structure according to claim 1, it is characterised in that：
The step e）In, each one Blade fence of electric power pylon tower leg arranged beneath treats four leg of electric power pylon
Under Blade fence construct after the completion of, pour single barrel of integral cast-in-situ bung platform of every suction type bucket base（8）And
Pre-buried mounting flange（4）, after platform concrete strength reaches design requirement, top electric power pylon tower leg and column foot plate are installed
（7）, and using high-strength bolt（3）Lower part barrel base is made to be connect with top electric power pylon tower leg integral, finally continue to assemble
Top electric power pylon is until the construction of entire electric power pylon finishes.
6. large-scale transmission tower Blade fence structure according to claim 1, it is characterised in that：
The step e）In, each multiple Blade fences of electric power pylon tower leg arranged beneath treat more groups under single leg
Resultant suction formula bucket base is all after the completion of construction, you can pours more barrels of integral cast-in-situ bung platforms of single leg（9）And pre-buried connecting flange
Disk（4）, so repeat；Treat all Blade fences and more barrels of integral cast-in-situ bung platforms under large-scale four leg of electric power pylon
（9）All construction finishes and after concrete strength reaches design requirement, installs top electric power pylon tower leg and column foot plate（7）, and
Using high-strength bolt（3）Lower part barrel base is made to be connect with top electric power pylon tower leg integral, it is defeated finally to continue assembling top
Ferroelectric tower is until the construction of entire electric power pylon finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830814.2A CN105332387B (en) | 2015-11-25 | 2015-11-25 | A kind of large size transmission tower Blade fence structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830814.2A CN105332387B (en) | 2015-11-25 | 2015-11-25 | A kind of large size transmission tower Blade fence structure and construction method |
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| Publication Number | Publication Date |
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| CN105332387A CN105332387A (en) | 2016-02-17 |
| CN105332387B true CN105332387B (en) | 2018-06-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013210A (en) * | 2016-06-16 | 2016-10-12 | 江苏海上龙源风力发电有限公司 | Jacket type offshore wind turbine foundation with multiple negative pressure barrels |
| CN107859411A (en) * | 2017-10-26 | 2018-03-30 | 广州电力设计院 | Steel pipe pole rainwater, condensate collection row's structure and high-voltage power transmission tower |
| CN109626944A (en) * | 2019-01-25 | 2019-04-16 | 国网山西省电力公司经济技术研究院 | A kind of high-tension line disc type ground perfusion materia and its preparation method and application |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6149029A (en) * | 1984-08-13 | 1986-03-10 | Nippon Steel Corp | Underwater foundation fixer |
| CN1262361A (en) * | 1999-02-02 | 2000-08-09 | 天津市南普近海工程开发有限公司 | Shallow water platform series with multi-barrel suction type foundation |
| CN101761090A (en) * | 2009-12-22 | 2010-06-30 | 浙江大学 | Space truss multi-barrel base of offshore wind power unit |
| CN202228859U (en) * | 2011-09-13 | 2012-05-23 | 三一电气有限责任公司 | Mudflat construction equipment and barrel-shaped foundation thereof |
| JP6554101B2 (en) * | 2013-08-28 | 2019-07-31 | エムエイチアイ ヴェスタス オフショア ウィンド エー／エス | Method of laying foundations of offshore wind turbines and template used for laying foundations of offshore wind turbines |
| CN103981883B (en) * | 2014-04-30 | 2016-03-30 | 天津大学 | A kind of foundation structure system of four bucket foundations combination |
| CN104652502B (en) * | 2015-01-12 | 2016-05-04 | 浙江大学 | Oscillatory type suction type barrel base levelling device |
| CN204676586U (en) * | 2015-04-20 | 2015-09-30 | 国家电网公司 | A kind of suction barrel shape transmission line foundation |
| CN205421310U (en) * | 2015-11-25 | 2016-08-03 | 国网浙江省电力公司 | Large -scale transmission tower suction formula bucket foundation structure |
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