CN104328794B - A kind of narrow base tower four lower limb associating well foundation - Google Patents
A kind of narrow base tower four lower limb associating well foundation Download PDFInfo
- Publication number
- CN104328794B CN104328794B CN201410612845.6A CN201410612845A CN104328794B CN 104328794 B CN104328794 B CN 104328794B CN 201410612845 A CN201410612845 A CN 201410612845A CN 104328794 B CN104328794 B CN 104328794B
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- foundation
- cast
- place concrete
- open caisson
- lower limb
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- 210000003141 lower extremity Anatomy 0.000 title claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 46
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000002689 soil Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000002352 surface water Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/18—Foundations formed by making use of caissons
Abstract
The open a kind of narrow base tower four lower limb associating well foundation of the present invention, including prefabricated circular reinforced concrete open caisson, cast-in-place concrete back cover, cast-in-place concrete short column and the foundation bolt being embedded in concrete short column or steel pipe, wherein, described cast-in-place concrete back cover is positioned at the bottom of prefabricated circular reinforced concrete open caisson；Described four lower limb associating well foundations include 4 cast-in-place concrete short columns, and the bottom of narrow base tower is fixedly mounted on cast-in-place concrete short column by foundation bolt or steel pipe；Described four lower limb associating well foundations can effectively prevent subsoil water and surface water from immersing foundation ditch, ensure foundation ditch molding, bottom open caisson good integrity, can effectively prevent flood from open caisson inside foundation soil being washed away, in giving full play to well, soil is heavily to above pulling out and the resistant function of the load that topples, avoid key dimension that big load narrow base tower uses merely mat foundation and pile foundation to cause and buried depth is excessive, also can reduce the difficulty of foundation construction simultaneously.
Description
Technical field
The present invention relates to a kind of iron towers of overhead power transmission lines basis, particularly relate to a kind of four united well foundations of lower limb being applicable to narrow base tower.
Background technology
Narrow base tower refers to that height drives the ratio transmission tower more than 10 with root, this tower not only economizes the land resource, reduce line corridor width, save young crops reparation, and have as common steel tower processing, transport, assemble, the feature such as easy to maintenance, the relatively common steel tower of its profile more can be coordinated with urban look mutually simultaneously, is therefore increasingly widely applied to the limited area in city and part corridor.
Narrow base tower root is opened and little is caused basic role force rate routine steel tower to want big, and individual panel basis conventional in conventional transmission line of electricity is difficult to meet requirement, and therefore narrow base tower transmission line of electricity is frequently with associating mat foundation or independent pile foundation.But the more conventional base form of the cost of both wants big, causing the investment of narrow base tower circuit entirety to be greatly improved, this also becomes the reason hindering narrow base tower transmission line of electricity broader applications.
In view of this, this is studied by the present inventor, develops a kind of narrow base tower four lower limb associating well foundation specially, and this case thus produces.
Summary of the invention
It is an object of the invention to provide a kind of four lower limb associating well foundations being applicable to narrow base tower, described four lower limb associating well foundations can effectively prevent subsoil water and surface water from immersing foundation ditch, particularly can stop the flowing of drift sand, ensure foundation ditch molding, bottom open caisson good integrity, can effectively prevent flood from open caisson inside foundation soil being washed away, in giving full play to well, soil is heavily to above pulling out and the resistant function of the load that topples, avoid key dimension that big load narrow base tower uses merely mat foundation and pile foundation to cause and buried depth is excessive, also can reduce the difficulty of foundation construction simultaneously.
To achieve these goals, the solution of the present invention is:
A kind of narrow base tower four lower limb associating well foundation, including prefabricated circular reinforced concrete open caisson, cast-in-place concrete back cover, cast-in-place concrete short column and the foundation bolt being embedded in concrete short column or steel pipe, wherein, described cast-in-place concrete back cover is positioned at the bottom of prefabricated circular reinforced concrete open caisson, is used for preventing subsoil water from entering inside prefabricated circular reinforced concrete open caisson；Described four lower limb associating well foundations include 4 cast-in-place concrete short columns, are uniformly arranged on described prefabricated circular reinforced concrete open caisson top inner wall, and its end face flushes with prefabricated circular reinforced concrete open caisson end face；The bottom of narrow base tower is fixedly mounted on cast-in-place concrete short column by foundation bolt or steel pipe；Described cast-in-place concrete stub cross-sections is square.
As preferably, described prefabricated circular reinforced concrete open caisson wall thickness is 12-40cm, and a diameter of 2-4m, the degree of depth is 3-6m.
As preferably, the thickness of described cast-in-place concrete back cover is 10-15cm.
As preferably, described cast-in-place concrete stub length is 1.5-3m, and cross-sectional width is 0.4-0.6m, and the length of side of both sides is also 0.4-0.6m.
During above-mentioned narrow base tower four lower limb associating construction of Open Caisson Foundation, cutting the earth in described prefabricated circular reinforced concrete open caisson makes it sink, and carries out concrete sealing bottom, form cast-in-place concrete back cover after reaching to design buried depth, then filling out the heart, then location is laid foundation bolt or inserts steel pipe casting concrete short column.After having constructed, basis is overall uses foundation bolt or insertion steel pipe to be attached with top narrow base tower.Narrow base tower four lower limb of the present invention associating well foundation is from basic stress performance, construction technology and comprehensive cost angularly, base case multiple to transmission line of electricity narrow base tower has carried out technical economic analysis, proposes a kind of four united well foundations of lower limb being applicable to narrow base tower.Making full use of narrow base tower root and open little feature, connected four tower legs of narrow base tower by top cast-in-place concrete short column, bottom is prefabricated thin-wall reinforced concrete circular open caisson, constitutes associating well foundation.This basis is pulled out on it and stable is balanced by weight and the open caisson outer wall frictional resistance with the soil body that bankets in basis deadweight, well.The frictional resistance that lower pressure is stablized between the counter-force by open caisson bottom surface and open caisson outer wall and soil balances.Resistance to tipping moment and open caisson sidewall soil resistance that tilting moment is then produced by basis deadweight reach balance.
Compared with prior art, the invention has the beneficial effects as follows: described narrow base tower four lower limb associating well foundation has good globality and stability, has bigger loaded area, can bear bigger vertical load, horizontal loading and the load that topples.Additionally, described open caisson is basis, it is again gear soil during construction and water-retaining cofferdam structure, its construction technology is easy, technology is safe reliably, associating well foundation can effectively prevent subsoil water and surface water from immersing foundation ditch, particularly can stop the flowing of drift sand, it is ensured that foundation ditch molding.Associating well foundation bottom open caisson good integrity, can effectively prevent flood from open caisson inside foundation soil being washed away, in giving full play to well, soil is heavily to above pulling out and the resistant function of the load that topples, and compares Conventional plate-type basis and pile foundation can effectively reduce construction investment, also can reduce the difficulty of foundation construction simultaneously.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the narrow base tower four lower limb associating well foundation structural representation of the present embodiment；
Fig. 2 is the narrow base tower four lower limb associating well foundation sectional view of the present embodiment.
Detailed description of the invention
As shown in Figure 1-2, a kind of narrow base tower four lower limb associating well foundation, including prefabricated circular reinforced concrete open caisson 1, cast-in-place concrete back cover 2, cast-in-place concrete short column 3 and the foundation bolt 4 being embedded in concrete short column, wherein, described cast-in-place concrete back cover 2 is positioned at the bottom of prefabricated circular reinforced concrete open caisson 1, thickness is 10-15cm, for preventing subsoil water from entering inside prefabricated circular reinforced concrete open caisson, arranging of cast-in-place concrete back cover 2 can make associating well foundation bottom open caisson good integrity, can effectively prevent flood from open caisson inside foundation soil being washed away, in giving full play to well, soil is heavily to above pulling out and the resistant function of the load that topples.Described four lower limb associating well foundations include 4 cast-in-place concrete short columns 3, are uniformly arranged on described prefabricated circular reinforced concrete open caisson 1 top inner wall, and its end face flushes with prefabricated circular reinforced concrete open caisson 1 end face；The bottom of narrow base tower is fixedly mounted on cast-in-place concrete short column 3 by foundation bolt；Described cast-in-place concrete short column 3 cross section is square (rectangle or square), a length of 1.5-3m, and width is 0.4-0.6m, and the length of side of both sides is also 0.4-0.6m.
Described prefabricated circular reinforced concrete open caisson 1 wall thickness is 12-40cm, a diameter of 2-4m, the degree of depth is 3-6m, general prefabricated circular reinforced concrete open caisson 1 wall thickness is directly proportional to diameter and the degree of depth, when prefabricated circular reinforced concrete open caisson 1 be relatively large in diameter, the degree of depth deeper time, wall thickness relatively can be thick, the setting of 12-40cm wall thickness, on the one hand can ensure that the anti-bending bearing capacity of prefabricated circular reinforced concrete open caisson 1, on the other hand can reduce again material as far as possible.
In the present embodiment, described narrow base tower four lower limb associating well foundation is applied in the narrow base angle tower of 110kV dual loop transmission line, and prefabricated circular reinforced concrete open caisson 1 wall thickness is 15cm, and a diameter of 2.4m, the degree of depth is 5m；The thickness of described cast-in-place concrete back cover is 15cm；Because prefabricated circular reinforced concrete open caisson 1 is circular, therefore, the cross section of cast-in-place concrete short column 3 cannot accomplish the square or rectangular of standard, in the present embodiment, the described a length of 2m of cast-in-place concrete short column 3, width is 0.5m, the length of side of both sides is also 0.5m, in actual mechanical process, the bottom of cast-in-place concrete short column 3 typically uses ramp structure, as shown in Figure 1, the face length degree that i.e. cast-in-place concrete short column 3 contacts with prefabricated circular reinforced concrete open caisson 1 is longer than the length of lateral surface, while ensureing cast-in-place concrete short column 3 adhesive force, material can also be saved.
During above-mentioned narrow base tower four lower limb associating construction of Open Caisson Foundation, cutting the earth in described prefabricated circular reinforced concrete open caisson 1 makes it sink, concrete sealing bottom is carried out after reaching to design buried depth, form cast-in-place concrete back cover 2, then feed back is filled out, the end face of general prefabricated circular reinforced concrete open caisson 1 is slightly larger than ground 5, and then foundation bolt 4 casting concrete short column 3 are laid in location.After having constructed, basis is overall uses foundation bolt 4 to be attached with top narrow base tower.
The foundation bolt 4 being embedded in concrete short column described in the present embodiment can also change insertion steel pipe into, and its function is similar to.
Above-described embodiment and the product form of the graphic and non-limiting present invention and style, suitably change that it is done by any person of an ordinary skill in the technical field or modify, all should be regarded as the patent category without departing from the present invention.
Claims (3)
1. a narrow base tower four lower limb associating well foundation, it is characterized in that: include prefabricated circular reinforced concrete open caisson, cast-in-place concrete back cover, cast-in-place concrete short column and the foundation bolt being embedded in concrete short column or steel pipe, wherein, described cast-in-place concrete back cover is positioned at the bottom of prefabricated circular reinforced concrete open caisson；Described four lower limb associating well foundations include 4 cast-in-place concrete short columns, are uniformly arranged on described prefabricated circular reinforced concrete open caisson top inner wall, and its end face flushes with prefabricated circular reinforced concrete open caisson end face；The bottom of narrow base tower is fixedly mounted on cast-in-place concrete short column by foundation bolt or steel pipe；Described cast-in-place concrete stub cross-sections is square；Described cast-in-place concrete stub length is 1.5-3m, and cross-sectional width is 0.4-0.6m, and the length of side of both sides is also 0.4-0.6m.
2. a kind of narrow base tower four lower limb associating well foundation as claimed in claim 1, it is characterised in that: described prefabricated circular reinforced concrete open caisson wall thickness is 12-40cm, and a diameter of 2-4m, the degree of depth is 3-6m.
3. a kind of narrow base tower four lower limb associating well foundation as claimed in claim 1, it is characterised in that: the thickness of described cast-in-place concrete back cover is 10-15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612845.6A CN104328794B (en) | 2014-11-04 | 2014-11-04 | A kind of narrow base tower four lower limb associating well foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612845.6A CN104328794B (en) | 2014-11-04 | 2014-11-04 | A kind of narrow base tower four lower limb associating well foundation |
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| Publication Number | Publication Date |
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| CN104328794A CN104328794A (en) | 2015-02-04 |
| CN104328794B true CN104328794B (en) | 2016-12-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104963348B (en) * | 2015-07-21 | 2017-03-01 | 中国建筑一局(集团)有限公司 | A kind of soft clay area tower crane construction supporting structure and its construction method |
| CN110080272A (en) * | 2019-04-25 | 2019-08-02 | 上海交通大学 | Offshore wind farm single-pile foundation and offshore wind farm device suitable for greater coasting area |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4875318B2 (en) * | 2005-06-10 | 2012-02-15 | 株式会社横山基礎工事 | Protection method for the foundation of floating structures |
| CN101812842B (en) * | 2010-04-22 | 2011-11-02 | 霍宏斌 | Tensionless filling pile structure |
| CN202247934U (en) * | 2011-09-14 | 2012-05-30 | 中国水电顾问集团华东勘测设计研究院 | Deep-buried barrel type wind turbine generator base structure |
| CN202519698U (en) * | 2012-03-09 | 2012-11-07 | 中国水电顾问集团西北勘测设计研究院 | Prestressed concrete cylindrical foundation |
| CN204199321U (en) * | 2014-11-04 | 2015-03-11 | 国家电网公司 | A kind of narrow base tower four leg associating open caisson foundation |
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Inventor after: Shi Yuequan Inventor after: Zhou Jian Inventor after: Li Honggang Inventor after: Li Chunxiao Inventor after: Zhang Xuyang Inventor after: Xing Qi Inventor after: Yu Yongjun Inventor after: Lv Jianjun Inventor after: Feng Bing Inventor after: Wang Zhenfeng Inventor after: Li Panfeng Inventor after: Ma Yuhui Inventor after: Zhu Chengzhi Inventor before: Shi Yuequan Inventor before: Li Chunxiao Inventor before: Zhang Xuyang Inventor before: Xing Qi Inventor before: Yu Yongjun Inventor before: Lv Jianjun Inventor before: Feng Bing Inventor before: Wang Zhenfeng Inventor before: Li Panfeng Inventor before: Zhou Jian Inventor before: Li Honggang |
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