CN109235481A - A kind of construction method preventing lifting by frost for transmission line of electricity column foundation - Google Patents
A kind of construction method preventing lifting by frost for transmission line of electricity column foundation Download PDFInfo
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- CN109235481A CN109235481A CN201811227519.8A CN201811227519A CN109235481A CN 109235481 A CN109235481 A CN 109235481A CN 201811227519 A CN201811227519 A CN 201811227519A CN 109235481 A CN109235481 A CN 109235481A
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- transmission line
- column foundation
- foundation
- steel cylinder
- straight column
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
本发明公开了一种用于输电线路直柱基础防止冻拔的施工方法。包括：开挖基坑，输电线路直柱基础底座置于永冻土层，将直柱基础下部基础底座迅速回填；将按照直柱基础尺寸预先制作好的内侧焊接有万向轮的外侧钢筒套装在直柱基础上部；外侧钢筒套装完毕后，对外侧钢筒下部与直柱基础底座间的缝隙进行密封，密封后从上部向套装在直柱基础上的外侧钢筒及在其内侧焊接的万向轮形成的间隙内缓慢均匀的注入润滑剂；润滑剂注入完成后，迅速回填土方。本发明的施工方法，解决了在冻土的冻胀作用下，由于向上的冻拔力和多次冻融循环导致直柱基础上部被冻拔破坏的问题。实现了防止冻拔与施工一体化，具有效率高、施工速度快等优点，应用前景广泛。
The invention discloses a construction method for preventing freezing and pulling of a straight column foundation of a transmission line. Including: excavating the foundation pit, placing the base of the straight column foundation of the transmission line in the permafrost layer, and quickly backfilling the foundation base at the lower part of the straight column foundation; prefabricated according to the size of the straight column foundation and welding the inner side of the outer steel cylinder with the universal wheel Set on the upper part of the vertical column foundation; after the outer steel cylinder is set, seal the gap between the lower part of the outer steel cylinder and the base of the vertical column foundation, and then weld from the upper part to the outer steel cylinder set on the vertical column foundation and on the inside of it. Slowly and evenly inject lubricant into the gap formed by the universal wheel; after the lubricant injection is completed, quickly backfill the soil. The construction method of the present invention solves the problem that the upper part of the vertical column foundation is damaged by freezing and pulling due to the upward freezing pulling force and multiple freeze-thaw cycles under the action of frost heaving of the frozen soil. It realizes the integration of preventing freezing and pulling and construction, and has the advantages of high efficiency and fast construction speed, and has wide application prospects.
Description
Technical field
The present invention relates to electric system construction field more particularly to a kind of lifting by frost is prevented for transmission line of electricity column foundation
Construction method.
Background technique
Electric system mainly includes generator, step-up substation, transmission line of electricity, the stepdown substation, power distribution system in power plant
System and user's composition, wherein transmission line of electricity is the Chinese medicinal composition part of whole system.
Ever-frozen ground freezes throughout the year but summer topsoil melting layer.It is built in the building basis on ever-frozen ground, winter
The volume increase due to the free moisture icing in foundation soil, warms up thaw collapse after becoming civilized and volume reduces, and multigelation can reduce ground
The intensity of base soil generates differential settlement, and construction cracking is caused even to damage.The frost heave having due to frozen soil, melting property of sinking
Etc. characteristics, transmission line of electricity column foundation is influenced very big, therefore must be taken in basic engineering.
Traditional conventional electrical power lines road column foundation pedestal in permafrost haorizon, just press on the upper layer of frozen soil layer by column foundation top
In 2~3 years after dress, under the frost heave action of frozen soil, due to upward lifting by frost power, after thawing recycles, right cylinder base
Plinth top is destroyed by lifting by frost, and column foundation is caused to fail, and then influences the normal work of entire transmission line of electricity, and 2~3 years of the later period
Transmission line of electricity column foundation and ground permafrost haorizon, which combine together, afterwards would not occur lifting by frost.
Summary of the invention
Based on the above issues, a kind of construction method that lifting by frost is prevented for transmission line of electricity column foundation is needed, it is defeated to protect
Electric line column foundation is not endured cold the destruction of pull out force.
The purpose of the invention is to provide a kind of construction methods that lifting by frost is prevented for transmission line of electricity column foundation, including
Following steps:
Step S101: excavation pit, transmission line of electricity column foundation pedestal are placed among permafrost, are removed sole plate and are sealed mould
Afterwards, transmission line of electricity column foundation infrastructure pedestal is backfilled rapidly, frozen soil is avoided to disturb；
Step S102: it after envelope mould is removed on transmission line of electricity column foundation top, will be made in advance according to transmission line of electricity column foundation size
The outside steel cylinder that the inside performed is welded with universal wheel is sleeved on transmission line of electricity column foundation top, and adjusts to universal wheel
Section, guarantees to touch transmission line of electricity column foundation surface；
Step S103: after the outside steel cylinder suit, to outside steel cylinder lower part and transmission line of electricity column foundation pedestal
Between gap be sealed, welded to the outside steel cylinder being sleeved on transmission line of electricity column foundation and on the inside of it after sealing from top
It is slowly uniformly injected into lubricant in the gap that the universal wheel connect is formed, guarantees that internal universal wheel keeps working condition；
Step S104: after the completion of lubricant injection, the earthwork is backfilled rapidly, carries out finishing operations.
Further, the outside steel cylinder can be square or columned.
Further, it can be connect between the universal wheel and transmission line of electricity column foundation welded on the inside of the outside steel cylinder
Touching, moves up and down convenient for outside steel cylinder relative to transmission line of electricity column foundation.
Optimization, the lubricant can be butter.
Further, after the inside is welded with the outside steel cylinder installation of universal wheel, without taking out again.
The present invention provides a kind of construction method that lifting by frost is prevented for transmission line of electricity column foundation, solves the jelly in frozen soil
Under swollen effect, since upward lifting by frost power and thawing recycle caused transmission line of electricity column foundation top and are destroyed by lifting by frost,
The problem of causing column foundation to fail, and then influencing the normal work of entire transmission line of electricity.Realizing prevents lifting by frost and construction one
Body, just by 2~3 years after dress especially in work transmission line, there are the upper layer summers of column foundation top frozen soil layer
When thawing, have many advantages, such as that high-efficient, speed of application is fast, application prospect is extensive.
Detailed description of the invention
Fig. 1 is a kind of workflow of construction method that lifting by frost is prevented for transmission line of electricity column foundation of the present invention
Figure；
Fig. 2 is a kind of construction section signal of construction method that lifting by frost is prevented for transmission line of electricity column foundation of the present invention
Figure；
Fig. 3 is that a kind of middle column foundation of construction method that lifting by frost is prevented for transmission line of electricity column foundation of the present invention is
Figure structure schematic representation is overlooked in the construction of square.
Fig. 4 is a kind of middle right cylinder base of construction method that lifting by frost is prevented for transmission line of electricity column foundation of the present invention
Plinth is that figure structure schematic representation is overlooked in the construction of cylindrical body.
In figure: 1, transmission line of electricity column foundation, 2, outside steel cylinder, 3, universal wheel, 4, gap.
Specific embodiment
In view of preventing the construction method of lifting by frost using transmission line of electricity column foundation in frozen soil layer, to solve the jelly in frozen soil
Under swollen effect, since upward lifting by frost power and thawing recycle caused transmission line of electricity column foundation top and are destroyed by lifting by frost,
The invention for causing column foundation Problem of Failure two to be made.
The embodiment of the present invention is illustrated with reference to the accompanying drawing.It should be noted that in the absence of conflict, this
The embodiment of invention and the technical characteristic in embodiment can be combined with each other, within the scope of the present invention.In addition, being
Convenient for description, step number is used below, but this should not be construed limitation of the present invention, in addition, with lower section
It, in some cases, can be to be different from although logical order is shown in flow charts for each step described in method
Sequence herein executes shown or described step.
Embodiment of the method 1
According to an embodiment of the invention, providing a kind of construction method for preventing lifting by frost for transmission line of electricity column foundation.
Fig. 1 shows the flow chart of embodiment of the method for the invention, includes the following steps:
Step S101, excavation pit, transmission line of electricity column foundation pedestal are placed among permafrost, are removed sole plate and are sealed mould
Afterwards, transmission line of electricity column foundation infrastructure pedestal is backfilled rapidly, frozen soil is avoided to disturb；
Step S102 will make in advance after envelope mould is removed on transmission line of electricity column foundation top according to transmission line of electricity column foundation size
The outside steel cylinder that the inside performed is welded with universal wheel is sleeved on transmission line of electricity column foundation top, and adjusts to universal wheel
Section, guarantees to touch transmission line of electricity column foundation surface；
Step S103, after the outside steel cylinder is set with, to outside steel cylinder lower part and transmission line of electricity column foundation pedestal
Between gap be sealed, welded to the outside steel cylinder being sleeved on transmission line of electricity column foundation and on the inside of it after sealing from top
It is slowly uniformly injected into lubricant in the gap that the universal wheel connect is formed, guarantees that internal universal wheel keeps working condition；
Step S104 backfills rapidly the earthwork, carries out finishing operations after the completion of lubricant injection.
The details of above-mentioned processing is described in detail below with reference to Fig. 2, includes transmission line of electricity column foundation (1), outside steel in Fig. 2
Cylinder (2), universal wheel (3), gap (4).
The outside steel cylinder is square.
It can be contacted between the universal wheel and transmission line of electricity column foundation welded on the inside of the outside steel cylinder, be convenient for outside
Steel cylinder is moved up and down relative to transmission line of electricity column foundation.
Optimization, the lubricant is butter.
After the inside is welded with the outside steel cylinder installation of universal wheel, without taking out again.
Embodiment of the method 2
According to an embodiment of the invention, providing a kind of construction method for preventing lifting by frost for transmission line of electricity column foundation.
Fig. 1 shows the flow chart of embodiment of the method for the invention, includes the following steps:
Step S101, excavation pit, transmission line of electricity column foundation pedestal are placed among permafrost, are removed sole plate and are sealed mould
Afterwards, transmission line of electricity column foundation infrastructure pedestal is backfilled rapidly, frozen soil is avoided to disturb；
Step S102 will make in advance after envelope mould is removed on transmission line of electricity column foundation top according to transmission line of electricity column foundation size
The outside steel cylinder that the inside performed is welded with universal wheel is sleeved on transmission line of electricity column foundation top, and adjusts to universal wheel
Section, guarantees to touch transmission line of electricity column foundation surface；
Step S103, after the outside steel cylinder is set with, to outside steel cylinder lower part and transmission line of electricity column foundation pedestal
Between gap be sealed, welded to the outside steel cylinder being sleeved on transmission line of electricity column foundation and on the inside of it after sealing from top
It is slowly uniformly injected into lubricant in the gap that the universal wheel connect is formed, guarantees that internal universal wheel keeps working condition；
Step S104 backfills rapidly the earthwork, carries out finishing operations after the completion of lubricant injection.
The details of above-mentioned processing is described in detail below with reference to Fig. 2, includes transmission line of electricity column foundation (1), outside steel in Fig. 2
Cylinder (2), universal wheel (3), gap (4).
The outside steel cylinder is columned.
It can be contacted between the universal wheel and transmission line of electricity column foundation welded on the inside of the outside steel cylinder, be convenient for outside
Steel cylinder is moved up and down relative to transmission line of electricity column foundation.
Optimization, the lubricant is butter.
After the inside is welded with the outside steel cylinder installation of universal wheel, without taking out again.
The present invention provides a kind of construction method that lifting by frost is prevented for transmission line of electricity column foundation, solves the jelly in frozen soil
Under swollen effect, since upward lifting by frost power and thawing recycle caused transmission line of electricity column foundation top and are destroyed by lifting by frost,
The problem of causing column foundation to fail, and then influencing the normal work of entire transmission line of electricity.Realizing prevents lifting by frost and construction one
Body, just by 2~3 years after dress especially in work transmission line, there are the upper layer summers of column foundation top frozen soil layer
When thawing, have many advantages, such as that high-efficient, speed of application is fast, application prospect is extensive.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227519.8A CN109235481A (en) | 2018-10-22 | 2018-10-22 | A kind of construction method preventing lifting by frost for transmission line of electricity column foundation |
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| CN201811227519.8A CN109235481A (en) | 2018-10-22 | 2018-10-22 | A kind of construction method preventing lifting by frost for transmission line of electricity column foundation |
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| CN109235481A true CN109235481A (en) | 2019-01-18 |
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| CN201811227519.8A Pending CN109235481A (en) | 2018-10-22 | 2018-10-22 | A kind of construction method preventing lifting by frost for transmission line of electricity column foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648413A (en) * | 2020-06-10 | 2020-09-11 | 内蒙古大学 | A device for anti-freezing and pulling out of pile foundation |
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| KR20080069335A (en) * | 2007-01-23 | 2008-07-28 | 한국건설기술연구원 | Fixation method of fixing force acting on foundation piles of permafrost |
| CN102877448A (en) * | 2012-10-24 | 2013-01-16 | 中铁西北科学研究院有限公司 | Deformation monitoring datum point device applicable to permafrost regions and method for mounting deformation monitoring datum point device |
| CN103306290A (en) * | 2012-03-27 | 2013-09-18 | 中国电力科学研究院 | Quick re-freezing and backfilling construction method for foundation ground of tower foundation in frozen ground area |
| CN105442626A (en) * | 2015-12-23 | 2016-03-30 | 中国电力工程顾问集团西北电力设计院有限公司 | Composite inclined column expansion foundation structure applied to power transmission line in permafrost region |
| CN108385673A (en) * | 2018-03-14 | 2018-08-10 | 兰州有色冶金设计研究院有限公司 | Miniature top filling ball sleeve pile pile and its construction method |
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2018
- 2018-10-22 CN CN201811227519.8A patent/CN109235481A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080069335A (en) * | 2007-01-23 | 2008-07-28 | 한국건설기술연구원 | Fixation method of fixing force acting on foundation piles of permafrost |
| CN103306290A (en) * | 2012-03-27 | 2013-09-18 | 中国电力科学研究院 | Quick re-freezing and backfilling construction method for foundation ground of tower foundation in frozen ground area |
| CN102877448A (en) * | 2012-10-24 | 2013-01-16 | 中铁西北科学研究院有限公司 | Deformation monitoring datum point device applicable to permafrost regions and method for mounting deformation monitoring datum point device |
| CN105442626A (en) * | 2015-12-23 | 2016-03-30 | 中国电力工程顾问集团西北电力设计院有限公司 | Composite inclined column expansion foundation structure applied to power transmission line in permafrost region |
| CN108385673A (en) * | 2018-03-14 | 2018-08-10 | 兰州有色冶金设计研究院有限公司 | Miniature top filling ball sleeve pile pile and its construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648413A (en) * | 2020-06-10 | 2020-09-11 | 内蒙古大学 | A device for anti-freezing and pulling out of pile foundation |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210622 Address after: 810000 77 Haiyan Road, Chengxi District, Xining City, Qinghai Province Applicant after: QINGHAI GEOLOGICAL ENVIRONMENT MONITORING STATION Applicant after: Qinghai nonferrous Third Geological Exploration Institute Applicant after: QINGHAI NORMAL University Applicant after: QINGHAI INSTITUTE OF HYDROGEOLOGY AND ENGINEERING Address before: No.18, Wusi West Road, Chengxi District, Xining City, Qinghai Province 810000 Applicant before: QINGHAI GEOLOGICAL ENVIRONMENT MONITORING STATION Applicant before: POWERCHINA QINGHAI ELECTRIC POWER DESIGN INSTITUTE Co.,Ltd. Applicant before: QINGHAI GEOLOGICAL SURVEY INSTITUTE Applicant before: QINGHAI INSTITUTE OF HYDROGEOLOGY AND ENGINEERING |
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Application publication date: 20190118 |
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| RJ01 | Rejection of invention patent application after publication |