CN105421480A - Square foundation pit dividing method for power transmission tower - Google Patents
Square foundation pit dividing method for power transmission tower Download PDFInfo
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- CN105421480A CN105421480A CN201510828173.7A CN201510828173A CN105421480A CN 105421480 A CN105421480 A CN 105421480A CN 201510828173 A CN201510828173 A CN 201510828173A CN 105421480 A CN105421480 A CN 105421480A
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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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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention belongs to the field of construction of a power transmission tower and particularly relates to a square foundation pit dividing method for the power transmission tower. The method includes the steps that firstly, the distance between a central point of a foundation and intersection points formed between diagonal lines of each base and a longitudinal symmetry axis as well as between the diagonal lines of each base and a transverse symmetry axis is worked out through a geometric algorithm; and then the diagonal lines of each base and actual central positions are obtained through an inversion construction method. During pouring of the bases, the diagonal lines of a mould only need to coincide with the obtained diagonal lines of the bases so that the positions and the relative positions of the bases, and steps, stand columns and four foundation bolts thereof can be effectively controlled, and the construction quality is improved.
Description
Technical field
The invention belongs to power transmission tower construction field, be specifically related to a kind of square foundation pits method of power transmission tower.
Background technology
Transmission line of electricity angle tower is all rectangular cross section, and four the concrete foundation lines of centres therefore its four legs being fixed on the earth are also squares; 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. the cross dimensions of each step of same pedestal or column, 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 leg or column, 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 foursquare size, shape and center deviation that each step of same pedestal or column, the section axiality of column and four Tiao Tui centers of 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 square 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 square foundation pits method for power transmission tower, the length of side on described square basis is a, and described square basis comprises four pedestals in square profile, and the section of described pedestal is also square, 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. rotate 45 ° with longitudinal axis of symmetry and lateral symmetry axle for benchmark respectively, make two mutually vertical and intersect at the first reference line and second reference line of central point;
3. on longitudinal axis of symmetry and lateral symmetry axle, measure size a from central point respectively to front, rear, left and right, obtain first, second, third, fourth reference point;
4. first, second, third, fourth reference point is connected successively, obtains the 3rd, the 4th, the 5th, the 6th reference line;
5. described step 2. in first, second reference line respectively with step 3. in the 3rd, the 4th, the 5th, the 6th reference line form four intersection points, using these four intersection points as the central point of four pedestals;
Mould is built in the central point erection of the pedestal 6. 5. determined around described step, when mould is built in erection, should guarantee the diagonal of mould and two the reference line conllinear crossing this base central point;
7. pedestal is built.
Present invention also offers another technical scheme belonging to same inventive concept:
A square foundation pits method for power transmission tower, the length of side on described square basis is a, and described square basis comprises four pedestals of square profile, and the section of described pedestal is also square, it is characterized in that comprising 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. rotate 45 ° with longitudinal axis of symmetry and lateral symmetry axle for benchmark respectively, make two mutually vertical and intersect at the first reference line and second reference line of central point;
3. on longitudinal axis of symmetry, measure size a from central point respectively to forward and backward, obtain first, second reference point;
Centered by first, second reference point, with longitudinal axis of symmetry for benchmark is distinguished left, to right rotation 45 °, obtained the 3rd, the 4th, the 5th, the 6th reference line;
5. described step 2. in first, second reference line respectively with step 3. in the 3rd, the 4th, the 5th, the 6th reference line form four intersection points, using these four intersection points as the central point of four pedestals;
Mould is built in the central point erection of the pedestal 6. 5. determined around described step, when mould is built in erection, should guarantee the diagonal of mould and two the reference line conllinear crossing this base central point;
7. pedestal is built.
Technique effect of the present invention is: first 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 the method for inverting construction is adopted, 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 top view of pedestal of the present invention.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of square foundation pits method of power transmission tower, the length of side on described square basis is a, the length of side of basic 10 of the present invention is the distance between adjacent two pedestal 11 central points, described square basis 10 comprises four pedestals 11 of square profile, the section of described pedestal 11 is also square, 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. rotate 45 ° with longitudinal axis of symmetry y and lateral symmetry axle x for benchmark respectively, make two mutually vertical and intersect at the first reference line B D and the second reference line A C of central point O; Because basis 10 is square, and pedestal 11 section is also square, and therefore according to geometric knowledge, first, second reference line (BD, AC) is the diagonal of pedestal 11;
3. on longitudinal axis of symmetry y and lateral symmetry axle x, measure size a from central point O 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; When the length of side on square basis 10 is known, according to plane geometry knowledge, the distance of intersection point to base center point O of each pedestal 11 diagonal and longitudinal axis of symmetry y and lateral symmetry axle x can be calculated easily, in the present embodiment, this distance is a, and the first reference point 1, second reference point 2, the 3rd reference point 3, the 4th reference point 4 are the intersection point of pedestal 11 diagonal and longitudinal axis of symmetry y and lateral symmetry axle x;
4. by first, second, third, fourth with reference to 1,2,3,4 be connected successively, obtain the 3rd reference line 12, the 4th reference line 23, the 5th reference line 34, the 6th reference line 41; 3rd reference line 12, the 4th reference line 23, the 5th reference line 34, the 6th reference line 41 are also the diagonal of each pedestal 11;
5. described step 2. in first, second reference line B D, AC respectively with step 3. in the 3rd reference line 12, the 4th reference line 23, the 5th reference line 34, the 6th reference line 41 form four intersection points A, B, C, D, using these four intersection points A, B, C, D as the central point of four pedestals 11;
Mould is built in the central point erection of the pedestal 11 6. 5. determined around described step, when mould is built in erection, should guarantee the diagonal of mould and two the reference line conllinear crossing this pedestal 11 central point;
7. pedestal 11 is built.
Further, as shown in Figure 3, 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 of mould and the reference line conllinear crossing this pedestal 11 central point.
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-buried each stone bolt 13, should guarantee its diagonal and the reference line conllinear crossing this pedestal 11 central point.
Embodiment 2
As shown in Figure 2, a kind of square foundation pits method of power transmission tower, the length of side on described square basis is a, and described square basis 10 comprises four pedestals 11 of square profile, and the section of described pedestal 11 is also square, 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. rotate 45 ° with longitudinal axis of symmetry y and lateral symmetry axle x for benchmark respectively, make two mutually vertical and intersect at the first reference line B D and the second reference line A C of central point O;
3. on longitudinal axis of symmetry y, measure size a from central point O respectively to forward and backward, obtain the first reference point 2, second reference point 4;
Centered by the first reference point 2, second reference point 4, with longitudinal axis of symmetry y for benchmark is distinguished left, to right rotation 45 °, obtained the 3rd reference line B 2, the 4th reference line C 2, the 5th reference line A 4, the 6th reference line D4;
5. described step 2. in the first reference line B D and the second reference line A C respectively with step 3. in the 3rd reference line B 2, the 4th reference line C 2, the 5th reference line A 4, the 6th reference line D4 form four intersection points A, B, C, D, using these four intersection points A, B, C, D as the central point of four pedestals 11;
Mould is built in the central point erection of the pedestal 11 6. 5. determined around described step, when mould is built in erection, should guarantee the diagonal of mould and two the reference line conllinear crossing this pedestal 11 central point;
7. pedestal 11 is built.
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.
The central principle of above-mentioned two embodiments is: 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. the square foundation pits method of a power transmission tower, the length of side on described square basis is a, described square basis (10) comprises four pedestals (11) of square profile, the section of described pedestal (11) is also square, 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. rotate 45 ° with longitudinal axis of symmetry (y) and lateral symmetry axle (x) for benchmark respectively, make two mutually vertical and intersect at the first reference line (BD) and second reference line (AC) of central point (O);
3. on longitudinal axis of symmetry (y) and lateral symmetry axle (x), measure size a from central point (O) respectively to front, rear, left and right, obtain the first reference point (1), the second reference point (2), the 3rd reference point (3), the 4th reference point (4);
4. a reference point (1), the second reference point (2), the 3rd reference point (3), the 4th reference point (4) are connected successively, obtain the 3rd reference line (12), the 4th reference line (23), the 5th reference line (34), the 6th reference line (41);
5. described step 2. in first, second reference line (BD, AC) respectively with step 3. in the 3rd reference line (12), the 4th reference line (23), the 5th reference line (34), the 6th reference line (41) form four intersection points (A, B, C, D), using these four intersection points (A, B, C, D) as the central point of four pedestals (11);
Mould is built in the central point erection of the pedestal (11) 6. 5. determined around described step, when mould is built in erection, should guarantee the diagonal of mould and two the reference line conllinear crossing this pedestal (11) central point;
7. pedestal (11) is built.
2. the square 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, column all should make the diagonal of mould and the reference line conllinear crossing this pedestal (11) central point.
3. the square 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-buried each stone bolt (13), its diagonal and the reference line conllinear crossing this pedestal (11) central point should be guaranteed.
4. the square foundation pits method of a power transmission tower, the length of side on described square basis is a, described square basis (10) comprises four pedestals (11) of square profile, the section of described pedestal (11) is also square, 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. rotate 45 ° with longitudinal axis of symmetry (y) and lateral symmetry axle (x) for benchmark respectively, make two mutually vertical and intersect at the first reference line (BD) and second reference line (AC) of central point (O);
3. on longitudinal axis of symmetry (y), measure size a from central point (O) respectively to forward and backward, obtain the first reference point (2), the second reference point (4);
Centered by the first reference point (2), the second reference point (4), with longitudinal axis of symmetry (y) for benchmark is distinguished left, to right rotation 45 °, obtained the 3rd reference line (B2), the 4th reference line (C2), the 5th reference line (A4), the 6th reference line (D4);
5. described step 2. in the first reference line (BD) and the second reference line (AC) respectively with step 3. in the 3rd reference line (B2), the 4th reference line (C2), the 5th reference line (A4), the 6th reference line (D4) form four intersection points (A, B, C, D), using these four intersection points (A, B, C, D) as the central point of four pedestals (11);
Mould is built in the central point erection of the pedestal (11) 6. 5. determined around described step, when mould is built in erection, should guarantee the diagonal of mould and two the reference line conllinear crossing this pedestal (11) central point;
7. pedestal (11) is built.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828173.7A CN105421480A (en) | 2015-11-25 | 2015-11-25 | Square foundation pit dividing method for power transmission tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828173.7A CN105421480A (en) | 2015-11-25 | 2015-11-25 | Square foundation pit dividing method for power transmission tower |
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| Publication Number | Publication Date |
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| CN105421480A true CN105421480A (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510828173.7A Pending CN105421480A (en) | 2015-11-25 | 2015-11-25 | Square foundation pit dividing method for power transmission tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268662A (en) * | 2017-06-05 | 2017-10-20 | 三峡大学 | A kind of power transmission line iron tower foundation point hole method |
| WO2020088363A1 (en) * | 2018-10-31 | 2020-05-07 | 中国电建集团山东电力建设第一工程有限公司 | Fast pit marking and lofting method for transmission line foundation |
| CN113186991A (en) * | 2021-05-25 | 2021-07-30 | 南京长江都市建筑设计股份有限公司 | Anti-floating structure and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268662A (en) * | 2017-06-05 | 2017-10-20 | 三峡大学 | A kind of power transmission line iron tower foundation point hole method |
| WO2020088363A1 (en) * | 2018-10-31 | 2020-05-07 | 中国电建集团山东电力建设第一工程有限公司 | Fast pit marking and lofting method for transmission line foundation |
| CN113186991A (en) * | 2021-05-25 | 2021-07-30 | 南京长江都市建筑设计股份有限公司 | Anti-floating structure and construction method thereof |
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Application publication date: 20160323 |