CN104805860A - Inclined column straight-excavating bottom-expanding big board foundation for transmission line - Google Patents
Inclined column straight-excavating bottom-expanding big board foundation for transmission line Download PDFInfo
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- CN104805860A CN104805860A CN201510241930.0A CN201510241930A CN104805860A CN 104805860 A CN104805860 A CN 104805860A CN 201510241930 A CN201510241930 A CN 201510241930A CN 104805860 A CN104805860 A CN 104805860A
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Abstract
The invention discloses an inclined column straight-excavating bottom-expanding big board foundation for a transmission line. The inclined column straight-excavating bottom-expanding big board foundation for the transmission line comprises an inclined column (1), angle steel (5) which is positioned in the inclined column (1) and is connected with an iron tower, and a foundation bottom board (2) which is connected with the inclined column (1), and is characterized by further comprising an expansion bottom (3) which is connected with the foundation bottom board (2); the expansion bottom (3) surrounds the periphery of the foundation bottom board (2); an upper soil body (6) above the expansion bottom (3) is in an unexcavated state; a concrete cushion layer (4) is spread at the bottom of the expansion bottom (3). According to the inclined column straight-excavating bottom-expanding big board foundation for the transmission line, the range of an anti-pulling soil body at the upper part of the foundation is increased by performing bottom expansion on the periphery of the foundation bottom board, namely, the self weight of the anti-pulling soil body is increased, and the anti-pulling bearing capacity of the foundation is improved; under the situation of the same foundation anti-pulling bearing capacity, the using amounts of the concrete and reinforcing steel bar are smaller compared with those of the existing technical scheme.
Description
Technical field
The invention belongs to transmission line foundation technical field, be specifically related to a kind of transmission line of electricity batter post and directly dig the large plate base in the expansion end.
Background technology
Transmission line foundation is the important component part of transmission line of electricity, and superstructure load is passed to ground by being connected with superstructure by it, in order to support the shaft tower of transmission line of electricity.Conventional base form comprises rock foundation, anchor rod foundation, digging foundation, ladder basis, large plate base, the large plate base of oblique cutting, bored concrete pile foundation etc.The wherein primary features of the large plate base of oblique cutting: be connected with superstructure by inserted angle steel, key dimension and buried depth are mainly subject to the impact of upper load and bearing capacity of foundation soil, are used for soft foundation.
When resistance to plucking design is carried out on existing basis, owing to adopting the digging mode that baseplate width is identical with vertical cut width, it pulls out angle span upwards to spread from base plate, when resistance to plucking design does not meet the demands, embedded depth of foundation can only be increased or strengthen sole plate width, causing the increase of concrete and amount of reinforcement.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art part, and provide a kind of transmission line of electricity batter post directly to dig the large plate base in the expansion end.It not only promotes foundation anti-pulling bearing capacity, and saves the consumption of concrete and reinforcing bar.
The object of the invention is to be reached by following measure: a kind of transmission line of electricity batter post directly digs and expands the large plate base in the end, it comprises batter post, be positioned at the angle steel of batter post, angle steel is connected with steel tower, the sole plate be connected with batter post, characterized by further comprising at the bottom of the expansion be connected with sole plate, and the expansion end is enclosed in around sole plate, the top soil body expanded is non-cutting status at the end, is equipped with concrete cushion bottom at the bottom of described expansion.
In technique scheme, it is 2m-10m that described transmission line of electricity batter post directly digs the buried depth H expanding the large plate base in the end, and the width D of described sole plate is 2m-20m.
In technique scheme, described sole plate from lower end upwards with at the bottom of described expansion in expanding base angle β, expansion base angle β is 20 °-70 °.
In technique scheme, described batter post is the concrete column of rectangle, and the shape of described sole plate is rectangle.
In technique scheme, the lower end of described angle steel is provided with shearing-resistant member.
The advantage that the present invention has is as follows: the present invention is by carrying out at the bottom of expansion to sole plate surrounding, increase the scope of the basic top resistance to plucking soil body, namely the deadweight of the resistance to plucking soil body is increased, improve foundation anti-pulling bearing capacity, when same basic anti-pulling capacity, there is the concrete less than prior art and amount of reinforcement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure 1, batter post, 2, sole plate, 3, expand the end, 4, concrete cushion, 5, angle steel, 6, the top soil body, α, on pull out angle, β, expand base angle.
Detailed description of the invention
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but it does not form limitation of the invention, only illustrate.Simultaneously by illustrating, advantage of the present invention will become clearly and easy understand.
Consult Fig. 1 known: a kind of transmission line of electricity batter post directly digs and expands the large plate base in the end, it comprises batter post 1, be positioned at the angle steel 5 of batter post 1, angle steel 5 is connected with steel tower, the sole plate 2 be connected with batter post 1, to characterized by further comprising at the bottom of the expansion be connected with sole plate 23, expands the end 3 to be enclosed in sole plate 2 around, expand the top soil body 6 above the end 3 in non-cutting status, at the bottom of described expansion, be equipped with concrete cushion 4 bottom 3.
Described a kind of transmission line of electricity batter post directly digs and expands the large plate base in the end, and it is characterized in that described transmission line of electricity batter post directly digs the buried depth H expanding the large plate base in the end is 2m-10m, and the width D of described sole plate 2 is 2m-20m.The width of buried depth H and sole plate 2 in the specific implementation, can in conjunction with geologic information and load design value.
Described a kind of transmission line of electricity batter post directly digs and expands the large plate base in the end, it is characterized in that described sole plate 2 from lower end upwards with at the bottom of described expansion 3 in expanding base angle β, expansion base angle β is 20 °-70 °.When sole plate 2 excavates, carry out excavating at the bottom of expansion along sole plate 2 surrounding, making to expand base angle β is 20 °-70 °, can be designed as 45 ° or 60 ° in the specific implementation.
Described a kind of transmission line of electricity batter post directly digs and expands the large plate base in the end, and it is characterized in that described batter post 1 is the concrete column of rectangle, the shape of described sole plate 2 is rectangle.In the specific implementation, batter post 1 can be foursquare concrete column for cross section, and the shape of sole plate 2 can be designed as square.
Described a kind of transmission line of electricity batter post directly digs and expands the large plate base in the end, it is characterized in that the lower end of described angle steel 5 is provided with shearing-resistant member.
In the present embodiment, before building, defaulted in batter post 1 by angle steel 5 together with the shearing-resistant member of its lower end, be integrated after building with sole plate 2 one-tenth, being convenient to the later stage is connected with top steel tower.
Concrete cushion 4 is built before sole plate 2 and the expansion end 3 are built.Expand the concrete of the end 3 employing and sole plate 2 same levels and reinforcing bar is not set.
Before sole plate 2 is built, carry out the excavation expanding the end 3, above ensureing to expand the end 3, the top soil body 6 is in non-cutting status simultaneously.
Directly digging at above-mentioned transmission line of electricity batter post expands in the large plate base in the end, and angle α is pulled out in soil body resistance to plucking calculating in basic top, and upwards spread by the end after sole plate expands the end, its span can carry out value in conjunction with geologic information or experimental result.
Described transmission line of electricity batter post directly digs and expands the large plate base in the end and be suitable for soil property and comprise: silt, mucky soil, red clay, artificial earth fill, expansive soil, flour sand, fine sand, medium sand, coarse sand gravelly soil, silty clay, native horsestone.
Other, without the part described in detail, is prior art.
Claims (5)
1. a transmission line of electricity batter post directly digs and expands the large plate base in the end, it comprises batter post (1), be positioned at the angle steel (5) of batter post (1), angle steel (5) is connected with steel tower, the sole plate (2) be connected with batter post (1), characterized by further comprising at the bottom of the expansion be connected with sole plate (2) (3), the expansion end (3) is enclosed in sole plate (2) around, expand the top soil body (6) of top, the end (3) in non-cutting status, at the bottom of described expansion, (3) bottom is equipped with concrete cushion (4).
2. a kind of transmission line of electricity batter post according to claim 1 directly digs and expands the large plate base in the end, it is characterized in that described transmission line of electricity batter post directly digs the buried depth H expanding the large plate base in the end is 2m-10m, and the width D of described sole plate (2) is 2m-20m.
3. a kind of transmission line of electricity batter post according to claim 1 and 2 directly digs and expands the large plate base in the end, it is characterized in that described sole plate (2) from lower end upwards with (3) at the bottom of described expansion in expanding base angle β, expansion base angle β is 20 °-70 °.
4. a kind of transmission line of electricity batter post according to claim 3 directly digs and expands the large plate base in the end, and it is characterized in that the concrete column that described batter post (1) is rectangle, the shape of described sole plate (2) is rectangle.
5. a kind of transmission line of electricity batter post according to claim 4 directly digs and expands the large plate base in the end, it is characterized in that the lower end of described angle steel (5) is provided with shearing-resistant member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241930.0A CN104805860A (en) | 2015-05-12 | 2015-05-12 | Inclined column straight-excavating bottom-expanding big board foundation for transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241930.0A CN104805860A (en) | 2015-05-12 | 2015-05-12 | Inclined column straight-excavating bottom-expanding big board foundation for transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104805860A true CN104805860A (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510241930.0A Pending CN104805860A (en) | 2015-05-12 | 2015-05-12 | Inclined column straight-excavating bottom-expanding big board foundation for transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105808894A (en) * | 2016-05-11 | 2016-07-27 | 中国电力工程顾问集团中南电力设计院有限公司 | Power transmission line basic mass design drawing method |
Citations (8)
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|---|---|---|---|---|
| JP2002256573A (en) * | 2001-03-02 | 2002-09-11 | Chubu Electric Power Co Inc | Foundation for existing foundation reinforcing steel tower and construction method for it |
| CN1952273A (en) * | 2006-11-15 | 2007-04-25 | 广东省电力设计研究院 | Digging foundation with baffle and its construction method |
| CN201128914Y (en) * | 2007-11-26 | 2008-10-08 | 上海电力设计院有限公司 | Anchoring part for inclined post type iron tower foundation |
| KR20110058359A (en) * | 2009-11-26 | 2011-06-01 | 이창남 | Splicing method of embedded type baseplate with steel column |
| CN202401467U (en) * | 2011-09-16 | 2012-08-29 | 中国电力工程顾问集团中南电力设计院 | Oblique column base of UHV DC transmission line |
| CN202577339U (en) * | 2012-05-11 | 2012-12-05 | 中国电力工程顾问集团东北电力设计院 | Oblique cylinder composite foundation with pulling tray |
| CN202595758U (en) * | 2012-03-31 | 2012-12-12 | 上海市电力公司 | Batter post foundation structure for overhead transmission line |
| CN204626443U (en) * | 2015-05-12 | 2015-09-09 | 中国电力工程顾问集团中南电力设计院有限公司 | A kind of transmission line of electricity batter post directly digs and expands the large plate base in the end |
-
2015
- 2015-05-12 CN CN201510241930.0A patent/CN104805860A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002256573A (en) * | 2001-03-02 | 2002-09-11 | Chubu Electric Power Co Inc | Foundation for existing foundation reinforcing steel tower and construction method for it |
| CN1952273A (en) * | 2006-11-15 | 2007-04-25 | 广东省电力设计研究院 | Digging foundation with baffle and its construction method |
| CN201128914Y (en) * | 2007-11-26 | 2008-10-08 | 上海电力设计院有限公司 | Anchoring part for inclined post type iron tower foundation |
| KR20110058359A (en) * | 2009-11-26 | 2011-06-01 | 이창남 | Splicing method of embedded type baseplate with steel column |
| CN202401467U (en) * | 2011-09-16 | 2012-08-29 | 中国电力工程顾问集团中南电力设计院 | Oblique column base of UHV DC transmission line |
| CN202595758U (en) * | 2012-03-31 | 2012-12-12 | 上海市电力公司 | Batter post foundation structure for overhead transmission line |
| CN202577339U (en) * | 2012-05-11 | 2012-12-05 | 中国电力工程顾问集团东北电力设计院 | Oblique cylinder composite foundation with pulling tray |
| CN204626443U (en) * | 2015-05-12 | 2015-09-09 | 中国电力工程顾问集团中南电力设计院有限公司 | A kind of transmission line of electricity batter post directly digs and expands the large plate base in the end |
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| 冶金部建筑研究总院，马鞍山钢铁股份有限公司: "《热轧H型钢设计应用手册》", 31 December 1998 * |
| 王新堂: "《百校土木工程专业通用教材 钢结构设计》", 31 January 2008 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105808894A (en) * | 2016-05-11 | 2016-07-27 | 中国电力工程顾问集团中南电力设计院有限公司 | Power transmission line basic mass design drawing method |
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| PB01 | Publication | ||
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Application publication date: 20150729 |