CN105507342A - Pit dividing method for rectangular foundation of power transmission tower - Google Patents
Pit dividing method for rectangular foundation of power transmission tower Download PDFInfo
- Publication number
- CN105507342A CN105507342A CN201510828521.0A CN201510828521A CN105507342A CN 105507342 A CN105507342 A CN 105507342A CN 201510828521 A CN201510828521 A CN 201510828521A CN 105507342 A CN105507342 A CN 105507342A
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- Prior art keywords
- reference line
- point
- pedestal
- diagonal
- symmetry
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Classifications
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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
The invention belongs to the field of construction of a power transmission tower, and particularly relates to a pit dividing method for a rectangular foundation of the power transmission tower. The pit dividing method comprises the following steps: (1) selecting a central point of the foundation, making a longitudinal symmetric axis parallel to a line direction and a transverse symmetric axis perpendicular to the line direction through the central point; (2) calculating a distance from an intersection point of a diagonal line of each pedestal, the longitudinal symmetric axis and the transverse symmetric axis to the central point; (3) from the central point, measuring the distance, obtained by calculating in step (2), along the longitudinal symmetric axis and the transverse symmetric axis, so as to obtain a practical intersection point of the diagonal line of each pedestal, the longitudinal symmetric axis and the transverse symmetric axis; (4) making the diagonal line of each pedestal; (5) during erection of a mould, ensuring that the diagonal line of the mould to be collinear with the diagonal line, made in the step (4), of each pedestal; and (6) pouring the pedestals. During pedestal pouring, only the diagonal line of the mould and the obtained pedestal diagonal lines are required to be superposed, so that positions and relative positions of the pedestals, steps thereof, stand columns and four foundation bolts can be effectively controlled, and therefore, the engineering quality is improved.
Description
Technical field
The invention belongs to power transmission tower construction field, be specifically related to a kind of rectangle foundation pits method of power transmission tower.
Background technology
Transmission line tangent tower is all generally rectangular cross section, and four the concrete foundation lines of centres therefore its four legs being fixed on the earth are also rectangles; This concrete foundation comprises four separate pedestals, and every bar leg of power transmission tower is supported by a pedestal respectively, and described pedestal section is square, and four stone bolt every bar leg being fixed column foot are also arranged in squares; Cast on basis in process, following error must be controlled: 1. each step of same pedestal or the cross dimensions of column and anchor bolt pitch and axiality thereof and relative torsion; 2. the rectangular size, shape and the center deviation that are formed of four Tiao Tui centers of same steel tower.Each step of same pedestal or column cross dimensions and four anchor bolt pitches are each step or the foursquare template of column by being assembled into drawing requirement size and select the stone bolt model of designing requirement size to realize; And rectangular size, shape and center deviation that four Tiao Tui centers of each step of same pedestal or the section axiality of column and relative torsion and same steel tower are formed, be then difficult to be well controlled in practice of construction process.
Summary of the invention
The object of this invention is to provide a kind of rectangle foundation pits method that accurately can control the power transmission tower of each base position of power transmission tower and relative position.
For achieving the above object, the invention provides following technical scheme: a kind of rectangle foundation pits method of power transmission tower, described rectangle basis comprises four pedestals of rectangular distribution, comprises the steps:
1. the central point on selected basis, and cross this central point and make longitudinal axis of symmetry of being parallel to line direction and the lateral symmetry axle perpendicular to line direction;
2. according to theoretical size and the theoretical position of each pedestal, trigonometric function is utilized to calculate the diagonal of each pedestal and the intersection point of longitudinal axis of symmetry and the lateral symmetry axle distance to central point;
3. from described central point, longitudinally axis of symmetry and lateral symmetry axle measure the distance that 2. step calculates gained, obtain the actual intersection point of each pedestal diagonal and longitudinal axis of symmetry and lateral symmetry axle;
4. according to the cornerwise theoretical angle of each pedestal, the actual intersection point 3. obtained with step, for starting point, makes the diagonal of each pedestal;
5. cornerwise intersection point of each pedestal is base central point, builds mould around the erection of this base central point, during erection mould, should ensure the diagonal conllinear of the pedestal that 4. diagonal of mould and step make;
6. pedestal is built.
Technique effect of the present invention is: the present invention utilizes geometric algorithm to calculate the diagonal of each pedestal and the intersection point of longitudinal axis of symmetry and the lateral symmetry axle distance to base center point, then constructed by inverting, obtain diagonal and the practical center position of each pedestal, when building pedestal, only the diagonal of mould need be overlapped with the pedestal diagonal of acquisition, just effectively can control position and the relative position of pedestal and step, column and four stone bolt, improve workmanship.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the schematic diagram of the embodiment of the present invention 2;
Fig. 3 is the schematic diagram of the embodiment of the present invention 3;
Fig. 4 is the top view of pedestal of the present invention.
Detailed description of the invention
A rectangle foundation pits method for power transmission tower, as Figure 1-3, described rectangle basis 10 comprises four pedestals 11 of distributed rectangular, comprises the steps:
1. the central point O on selected basis 10, and cross this central point O and make longitudinal axis of symmetry y of being parallel to line direction and the lateral symmetry axle x perpendicular to line direction;
2. according to theoretical size and the theoretical position of each pedestal 11, trigonometric function is utilized to calculate the diagonal of each pedestal 11 and the intersection point of longitudinal axis of symmetry y and the lateral symmetry axle x distance to central point O;
3. from described central point O, longitudinally axis of symmetry y and lateral symmetry axle x measures the distance that 2. step calculates gained, obtains the actual intersection point of each pedestal 11 diagonal and longitudinal axis of symmetry y and lateral symmetry axle x;
4. according to the cornerwise theoretical angle of each pedestal 11, the actual intersection point 3. obtained with step, for starting point, makes the diagonal of each pedestal 11;
5. cornerwise intersection point of each pedestal 11 is base central point, builds mould around the erection of this base central point, during erection mould, should ensure the diagonal conllinear of the pedestal 11 that 4. diagonal of mould and step make;
6. pedestal is built.
Further, as shown in Figure 4, described pedestal 11 is made up of the coaxial step of at least two sections or column, when setting up the mould of every one-level step or column, the diagonal of mould and described step all should be made 4. to make diagonal conllinear.
The top of described pedestal 11 is also embedded with four for connecting the stone bolt 13 of power transmission tower supporting leg, and each stone bolt 13, in square profile, during pre-embedded anchoring bolts 13, should guarantee the diagonal conllinear of the pedestal 11 that 4. its diagonal and step make.
Embodiment 1
As shown in Figure 1, as the preferred embodiments of the present invention, the length on described rectangle basis 10 is a, width is b, foundation width of the present invention and foundation length refer to the distance between adjacent two pedestal 11 central points, the section of described pedestal 11 is square, and point hole method of this square base is as follows:
From base center point O longitudinally axis of symmetry y measure (a-b)/2 respectively to forward and backward, obtain two sub-center point E, F;
From base center point O longitudinally axis of symmetry y and lateral symmetry axle x measure (a+b)/2 respectively to front, rear, left and right, obtain the first reference point 1, second reference point 2, the 3rd reference point 3, the 4th reference point 4, described first reference point 1, second reference point 2, the 3rd reference point 3, the 4th reference point 4 and two sub-centers point E, F are the 3. described diagonal of each pedestal 11 of step and the actual intersection point of longitudinal axis of symmetry y and lateral symmetry axle x;
On two sub-center point E, F, with longitudinal axis of symmetry y for benchmark is respectively to left and right rotation 45 °, obtain the first reference line FB, the second reference line FC, the 3rd reference line EA, the 4th reference line ED, the 3rd reference line EA wherein on front sub-center point E, the 4th reference line ED tiltedly extend back, and extend before the first reference line FB on rear sub-center point F, the second reference line FC are oblique;
First reference point 1, second reference point 2, the 3rd reference point 3, the 4th reference point 4 are connected successively, obtain the 5th reference line 12, the 6th reference line 23, the 7th reference line 34, the 8th reference line 41, described first reference line FB, the second reference line FC, the 3rd reference line EA, the 4th reference line ED, the 5th reference line 12, the 6th reference line 23, the 7th reference line 34, the 8th reference line 41 are the diagonal of the 4. described pedestal 11 of step;
The first described reference line FB, the second reference line FC, the 3rd reference line EA, the 4th reference line ED form four intersection points B, C, D, A with described 5th reference line 12, the 6th reference line 23, the 7th reference line 34, the 8th reference line 41 respectively, and these four intersection points B, C, D, A are the central point of described four pedestals 11.
Embodiment 2
As shown in Figure 2, this embodiment and the difference of embodiment 1 are only that pedestal 11 is cornerwise and determine that mode is different, crossing the diagonal of reference point 2,4 in the present embodiment is also with longitudinal axis of symmetry y for benchmark, rotate 45 ° of acquisitions.
Embodiment 3
As shown in Figure 3, this embodiment and the difference of embodiment 1 be sub-center point E, F to choose mode different, simultaneously, pedestal 11 is cornerwise determines that mode is different, sub-center point E, F of the present embodiment are the intersection points choosing diagonal and lateral symmetry axle x, and each diagonal all to adopt with axis of symmetry be that the mode that benchmark rotates 45 ° obtains.
The central principle of above-described embodiment is all: the diagonal first determining each pedestal 11, then central point A, B, C, D of pedestal 11 is found by diagonal, this locate mode can improve the positional precision of each pedestal on the one hand, diagonal can be utilized to control position and the relative position of each pedestal on the other hand, substantially increase engineering construction quality.
Claims (4)
1. a rectangle foundation pits method for power transmission tower, described rectangle basis (10) comprises four pedestals (11) of distributed rectangular, it is characterized in that comprising the steps:
1. the central point (O) of selected basis (10), and cross this central point (O) and make and be parallel to longitudinal axis of symmetry (y) of line direction and lateral symmetry axle (x) perpendicular to line direction;
2. according to theoretical size and the theoretical position of each pedestal (11), trigonometric function is utilized to calculate the distance of intersection point to central point (O) of the diagonal of each pedestal (11) and longitudinal axis of symmetry (y) and lateral symmetry axle (x);
3. from described central point (O), longitudinally axis of symmetry (y) and lateral symmetry axle (x) measure the distance that 2. step calculates gained, obtain the actual intersection point of each pedestal (11) diagonal and longitudinal axis of symmetry (y) and lateral symmetry axle (x);
4. according to the cornerwise theoretical angle of each pedestal (11), the actual intersection point 3. obtained with step, for starting point, makes the diagonal of each pedestal (11);
5. cornerwise intersection point of each pedestal (11) is base central point, builds mould around the erection of this base central point, during erection mould, should ensure the diagonal conllinear of the pedestal (11) that 4. diagonal of mould and step make;
6. pedestal is built.
2. the rectangle foundation pits method of power transmission tower according to claim 1, it is characterized in that: described pedestal (11) is made up of the coaxial step of at least two sections or column, when setting up the mould of every one-level step or column, all should make the diagonal conllinear that 4. diagonal of mould and described step make.
3. the rectangle foundation pits method of power transmission tower according to claim 1, it is characterized in that: the top of described pedestal (11) is also embedded with four for connecting the stone bolt (13) of power transmission tower supporting leg, each stone bolt (13) is in square profile, time pre-embedded anchoring bolts (13), the diagonal conllinear of the pedestal (11) that 4. its diagonal and step make should be guaranteed.
4. the rectangle foundation pits method of power transmission tower according to claim 1, it is characterized in that: the length of described rectangle basis (10) is a, width is b, and the section of described pedestal (11) is square, and point hole method of this square base is as follows:
From base center point (O), longitudinally axis of symmetry (y) measures (a-b)/2 respectively to forward and backward, obtains 2 sub-center points (E, F);
From base center point (O), longitudinally axis of symmetry (y) and lateral symmetry axle (x) be forward, after, left, part on the right side and do not measure (a+b)/2, obtain the first reference point (1), second reference point (2), 3rd reference point (3), 4th reference point (4), described first reference point (1), second reference point (2), 3rd reference point (3), 4th reference point (4) and two sub-centers point (E, F) diagonal of the 3. described each pedestal (11) of step and the actual intersection point of longitudinal axis of symmetry (y) and lateral symmetry axle (x) is,
On 2 sub-center points (E, F), with longitudinal axis of symmetry (y) for benchmark is respectively to left and right rotation 45 °, obtain the first reference line (FB), the second reference line (FC), the 3rd reference line (EA), the 4th reference line (ED), the 3rd reference line (EA) wherein on front sub-center point (E), the 4th reference line (ED) tiltedly extend back, and extend before the first reference line (FB) on rear sub-center point (F), the second reference line (FC) are oblique;
By the first reference point (1), second reference point (2), 3rd reference point (3), 4th reference point (4) is connected successively, obtain the 5th reference line (12), 6th reference line (23), 7th reference line (34), 8th reference line (41), described first reference line (FB), second reference line (FC), 3rd reference line (EA), 4th reference line (ED), 5th reference line (12), 6th reference line (23), 7th reference line (34), 8th reference line (41) is the diagonal of the 4. described pedestal (11) of step,
Described the first reference line (FB), the second reference line (FC), the 3rd reference line (EA), the 4th reference line (ED) form four intersection points (B, C, D, A) with described 5th reference line (12), the 6th reference line (23), the 7th reference line (34), the 8th reference line (41) respectively, and these four intersection points (B, C, D, A) are the central point of described four pedestals (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828521.0A CN105507342A (en) | 2015-11-25 | 2015-11-25 | Pit dividing method for rectangular foundation of power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828521.0A CN105507342A (en) | 2015-11-25 | 2015-11-25 | Pit dividing method for rectangular foundation of power transmission tower |
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| Publication Number | Publication Date |
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| CN105507342A true CN105507342A (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510828521.0A Pending CN105507342A (en) | 2015-11-25 | 2015-11-25 | Pit dividing method for rectangular foundation of power transmission tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343082A (en) * | 2018-02-27 | 2018-07-31 | 国网山东省电力公司泗水县供电公司 | A kind of foundation construction method of high pressure shaft tower |
Citations (4)
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| JP2000178981A (en) * | 1998-12-15 | 2000-06-27 | Shimizu Corp | Pile foundation structure |
| CN102021916A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Foundation construction method of iron tower |
| CN102021915A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for constructing large plate type foundation of line |
| CN102022993A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for separated pits of single pole tower foundation of circuits |
-
2015
- 2015-11-25 CN CN201510828521.0A patent/CN105507342A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000178981A (en) * | 1998-12-15 | 2000-06-27 | Shimizu Corp | Pile foundation structure |
| CN102021916A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Foundation construction method of iron tower |
| CN102021915A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for constructing large plate type foundation of line |
| CN102022993A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for separated pits of single pole tower foundation of circuits |
Non-Patent Citations (1)
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| 利小兵: "角度法分坑在输电线路矩形铁塔基础施工中的应用", 《四川建材》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343082A (en) * | 2018-02-27 | 2018-07-31 | 国网山东省电力公司泗水县供电公司 | A kind of foundation construction method of high pressure shaft tower |
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Application publication date: 20160420 |
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