CN105649394A - Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region - Google Patents
Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region Download PDFInfo
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- CN105649394A CN105649394A CN201610173009.1A CN201610173009A CN105649394A CN 105649394 A CN105649394 A CN 105649394A CN 201610173009 A CN201610173009 A CN 201610173009A CN 105649394 A CN105649394 A CN 105649394A
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- iron tower
- transmission line
- soil layer
- severe cold
- freezing structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
- E04H12/10—Truss-like structures
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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
- 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
- E02D31/10—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 soil pressure or hydraulic pressure
- E02D31/14—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 soil pressure or hydraulic pressure against frost heaves in soil
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
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Abstract
The invention discloses an anti-freezing structure for an iron tower and a foundation of a transmission line in a deep-water area of a severe cold region. The bottom periphery of an iron tower and a foundation are back-filled with a gravelly soil layer, the compactness of the gravelly soil layer is larger than or equal to 0.90, the back-filling compacting height is not less than 0.5 m above a frost line, the filling slope ratio of the gravelly soil layer is 1:(2.5-3.0), a sand bed is laid on the gravelly soil layer, and a concrete slab is arranged on the sand bed. The anti-freezing structure is safe and effective in freezing prevention of the iron tower and the foundation, simple and practical in structure, simple and convenient to construct and low in construction cost, and effectively prevents the iron tower and the foundation from damages caused by freezing.
Description
Technical field
The present invention relates to a kind of Anti-freezing structure, especially a kind of for preventing the Anti-freezing structure on profundal zone, severe cold area steel tower and basis thereof.
Background technology
Severe cold area is in the ultra-high-tension power transmission line on water field of big area, and the icing of waters large area and freezing time are long in the winter time, and the steel tower water surface is located in the frozen state for a long time with lower part. Because severe cold area water surface icing thickness is relatively big, generally more than 1.0m, by steel tower and basis by producing huge ice pressure, cause iron tower main material and auxiliary material gross distortion, fracture, have a strong impact on circuit and run safety.
Traditional method is protected, be generally adopted protect by force, the method such as deicing. The investment of strong maintaining method is big, long construction period, and strong protection structure is high to ground fundamental importance, and the scope of application is little, and engineering practice shows, strong maintaining method poor effect, and strong protection structure and steel tower are even extruded destruction by sometimes huge ice pressure together; Deicing method need to employ a large amount of manpower to carry out opening ice de-icing work, though the threat that tower material is endured cold can temporarily be solved, however it is necessary that a large amount of manpower is safeguarded every day.
Summary of the invention
The technical problem to be solved is to provide a kind of Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis, and effect is obvious, it is easy to safeguarding, use cost is relatively low, it is possible to thoroughly solve steel tower and basis by frost threat problem.
In order to solve the problems referred to above, the technical solution adopted in the present invention is: a kind of Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis, bottom steel tower, periphery and basis thereof are backfilled with crushed stone soil layer, compactness >=0.90 of crushed stone soil layer, it is backfilling and compacted height no less than the above 0.5m of frost line, crushed stone soil layer fill slope is than for 1:2.5��3.0, being equipped with sand bedding course, sand bedding course arranges concrete slab in crushed stone soil layer.
Described sand bedding course laying depth >=0.25 meter in crushed stone soil layer, thickness >=0.3 meter of concrete slab.
Described concrete slab is cast in place concrete plate, strength grade be C25F200 or more than.
Described concrete slab 0.5 meter of block more than frost line protects to elevation at the bottom of riverbed 0.5 meter.
Described concrete slab top is provided with platform, and platform contacts with steel tower.
The horizontal profile of described Anti-freezing structure is square, rectangle or circle.
Beneficial effects of the present invention: by steel tower and basis being banketed and concrete slab lining cutting, when the water surface freezes, climb along concrete slab is domatic in ice face, huge ice pressure major part is uploaded by the gradient direction of plate, only concrete slab is produced pressure by fraction, because banketing as flexible structure, the digested absorption of this partial pressure after plate, it is difficult to reach on steel tower and basis, thus ensure that its safety.Present invention effectively prevents the drawback of traditional method. Its investment is little, constructs simple and easy, and later maintenance expense is low, the drawback efficiently solving tradition deicing that can put things right once and for all, and saves substantial amounts of manpower and materials, it is ensured that the safe operation of transmission line of electricity, thus substantially increasing the reliability of confession, electricity consumption.
Accompanying drawing explanation
Fig. 1 is the present invention structural representation for the Anti-freezing structure on profundal zone, severe cold area iron tower of power transmission line and basis.
Fig. 2 is the horizontal top view of Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1, 2, the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis of the present invention, bottom steel tower 1, periphery and basis 2 thereof are backfilled with crushed stone soil layer 3, compactness >=0.90 of crushed stone soil layer 3, it is backfilling and compacted height no less than the above 0.5m of frost line, crushed stone soil layer 3 fill slope is than for 1:2.5��3.0, being equipped with sand bedding course 5, sand bedding course 5 arranges concrete slab 4 in crushed stone soil layer 3.
Described sand bedding course 5 laying depth >=0.25 meter in crushed stone soil layer 3, thickness >=0.3 meter of concrete slab 4.
Described concrete slab 4 is cast in place concrete plate 4, strength grade be C25F200 or more than.
Described concrete slab 4 protects to elevation at the bottom of riverbed less than 6 0.5 meters from more than 7 0.5 meters of blocks of frost line.
Described concrete slab 4 top is provided with platform 8, and platform 8 contacts with steel tower 1.
The horizontal profile of described Anti-freezing structure is square (the present embodiment), naturally it is also possible to be rectangle or circle.
In enforcement, after steel tower and basis thereof are constructed in a conventional manner, about with gravelly soil backfill compacting, compactness >=0.90, be backfilling and compacted height to frost line >=0.5m height, fill slope ratio is after completing for 1:2.5��3.0, fill compaction and sedimentation, the concrete slab thick in cast-in-place thickness >=0.3 meter, outside of banketing carries out revetment, the wherein sand bedding course of laying depth >=0.25 meter under concrete cast-in-place slab. Utilize backfill gravelly soil 3 and concrete shield 5 to isolate to freeze and steel tower, it is ensured that steel tower is not produced tower body by the impact of frost-heave force in ice period and deforms.
Sand bedding course 5 thickness >=0.25 meter, when being subject to frost expansive force effect, sand bedding course can play the effect of elastic buffer, reduces its shearing force to steel tower 1 and basis 2.
The strength grade of concrete shield 5 and frost-resistance grade are unsuitable too low, should select corresponding freeze proof grade according to local Study on Climate Division. Described concrete shield more than strength grade C25F200.
Embodiment described above is merely to illustrate technological thought and the feature of the present invention, its object is to make those skilled in the art it will be appreciated that present disclosure implementing according to this, the scope of the claims of the present invention only can not be limited with the present embodiment, what namely all disclosed spirit was made changes on an equal basis or modifies, and still drops in the scope of the claims of the present invention.
Claims (6)
1. the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis, it is characterized in that, it is backfilled with crushed stone soil layer (3) in steel tower (1) periphery, bottom and basis (2) thereof, compactness >=0.90 of crushed stone soil layer (3), it is backfilling and compacted height no less than the above 0.5m of frost line, crushed stone soil layer (3) fill slope is than for 1:2.5��3.0, crushed stone soil layer (3) is equipped with sand bedding course (5), sand bedding course (5) arranges concrete slab (4).
2. the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis according to claim 1, it is characterized in that, described sand bedding course (5) is in upper laying depth >=0.25 meter of crushed stone soil layer (3), thickness >=0.3 meter of concrete slab (4).
3. the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis according to claim 2, it is characterised in that described concrete slab (4) is cast in place concrete plate (4), strength grade be C25F200 or more than.
4. the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis according to claim 1 and 2, it is characterized in that, described concrete slab (4) 0.5 meter of block more than frost line (7) protects to elevation at the bottom of riverbed (6) 0.5 meter below.
5. the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis according to claim 4, it is characterized in that, described concrete slab (4) top is provided with platform (8), and platform (8) contacts with steel tower (1).
6. the Anti-freezing structure for profundal zone, severe cold area iron tower of power transmission line and basis according to claim 4, it is characterised in that the horizontal profile of described Anti-freezing structure is square, rectangle or circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173009.1A CN105649394A (en) | 2016-03-24 | 2016-03-24 | Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173009.1A CN105649394A (en) | 2016-03-24 | 2016-03-24 | Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region |
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| Publication Number | Publication Date |
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| CN105649394A true CN105649394A (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610173009.1A Pending CN105649394A (en) | 2016-03-24 | 2016-03-24 | Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region |
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| CN (1) | CN105649394A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836314A (en) * | 2016-12-24 | 2017-06-13 | 中铁十八局集团有限公司 | A kind of freeze proof method for preventing skidding of wheels in severe cold area continuous beam straightway high trestle basis |
| CN107989062A (en) * | 2017-11-06 | 2018-05-04 | 中国电建集团北京勘测设计研究院有限公司 | A kind of ice resistant structure and its construction method suitable for offshore wind farm low pile cap basis |
| CN111350398A (en) * | 2020-03-19 | 2020-06-30 | 国网河北省电力有限公司阜城县供电分公司 | Electric pole anti-settling pile forming device and method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818712A (en) * | 1972-07-10 | 1974-06-25 | Atlantic Richfield Co | Frozen embankments |
| SU623936A1 (en) * | 1976-11-22 | 1978-09-15 | Западно-Сибирский Государственный Институт По Проектированию Водохозяйственного И Мелиоративного Строительства | Building, structure to be erected on swelling soils |
| CN201883448U (en) * | 2009-06-24 | 2011-06-29 | 天津市海王星海上工程技术有限公司 | Mixed foundation on sea |
| CN102817380A (en) * | 2012-02-20 | 2012-12-12 | 中国科学院寒区旱区环境与工程研究所 | Measure for enhancing electric transmission line tower footing frozen soil foundation stability |
| CN104099860A (en) * | 2014-06-20 | 2014-10-15 | 中铁大桥勘测设计院集团有限公司 | Ice breaking body for bridge towers and bridge piers in seasonal freeze-up river and construction method |
| CN204456237U (en) * | 2014-12-08 | 2015-07-08 | 国家电网公司 | Anti-freezing device bottom steel tower |
| CN204608823U (en) * | 2015-04-07 | 2015-09-02 | 江苏海上龙源风力发电有限公司 | A kind of anchor bar bundle embedding rock formula offshore wind turbine High-Rise Pile Cap Foundation |
| CN205445088U (en) * | 2016-03-24 | 2016-08-10 | 中水北方勘测设计研究有限责任公司 | A anti -icing freezing is constructed that is used for cold area profundal zone transmission line iron tower and basis |
-
2016
- 2016-03-24 CN CN201610173009.1A patent/CN105649394A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818712A (en) * | 1972-07-10 | 1974-06-25 | Atlantic Richfield Co | Frozen embankments |
| SU623936A1 (en) * | 1976-11-22 | 1978-09-15 | Западно-Сибирский Государственный Институт По Проектированию Водохозяйственного И Мелиоративного Строительства | Building, structure to be erected on swelling soils |
| CN201883448U (en) * | 2009-06-24 | 2011-06-29 | 天津市海王星海上工程技术有限公司 | Mixed foundation on sea |
| CN102817380A (en) * | 2012-02-20 | 2012-12-12 | 中国科学院寒区旱区环境与工程研究所 | Measure for enhancing electric transmission line tower footing frozen soil foundation stability |
| CN104099860A (en) * | 2014-06-20 | 2014-10-15 | 中铁大桥勘测设计院集团有限公司 | Ice breaking body for bridge towers and bridge piers in seasonal freeze-up river and construction method |
| CN204456237U (en) * | 2014-12-08 | 2015-07-08 | 国家电网公司 | Anti-freezing device bottom steel tower |
| CN204608823U (en) * | 2015-04-07 | 2015-09-02 | 江苏海上龙源风力发电有限公司 | A kind of anchor bar bundle embedding rock formula offshore wind turbine High-Rise Pile Cap Foundation |
| CN205445088U (en) * | 2016-03-24 | 2016-08-10 | 中水北方勘测设计研究有限责任公司 | A anti -icing freezing is constructed that is used for cold area profundal zone transmission line iron tower and basis |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836314A (en) * | 2016-12-24 | 2017-06-13 | 中铁十八局集团有限公司 | A kind of freeze proof method for preventing skidding of wheels in severe cold area continuous beam straightway high trestle basis |
| CN106836314B (en) * | 2016-12-24 | 2019-08-23 | 中铁十八局集团有限公司 | A kind of freeze proof method for preventing skidding of wheels in severe cold area continuous beam straightway high trestle basis |
| CN107989062A (en) * | 2017-11-06 | 2018-05-04 | 中国电建集团北京勘测设计研究院有限公司 | A kind of ice resistant structure and its construction method suitable for offshore wind farm low pile cap basis |
| CN107989062B (en) * | 2017-11-06 | 2023-10-20 | 中国电建集团北京勘测设计研究院有限公司 | Anti-ice structure suitable for offshore wind power low-pile cap foundation and construction method thereof |
| CN111350398A (en) * | 2020-03-19 | 2020-06-30 | 国网河北省电力有限公司阜城县供电分公司 | Electric pole anti-settling pile forming device and method thereof |
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Application publication date: 20160608 |