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Pit dividing method for rectangular foundation of power transmission tower

A technology for rectangular and transmission towers, applied in infrastructure engineering, construction, etc., can solve the problems of size, shape and center position deviation, difficult to get good control, etc., and achieve the effect of improving project quality

Inactive Publication Date: 2016-04-20
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-sectional size of each step or column and the distance between four anchor bolts of the same base can be realized by assembling the template of each step or column square with the size required by the drawing and selecting the anchor bolt template with the size required by the design; while the same base The coaxiality and relative torsion of the section of each step or column and the size, shape and center position deviation of the rectangle formed by the center of the four legs of the same tower are difficult to be well controlled in the actual construction process.

Method used

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  • Pit dividing method for rectangular foundation of power transmission tower
  • Pit dividing method for rectangular foundation of power transmission tower
  • Pit dividing method for rectangular foundation of power transmission tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, as a preferred embodiment of the present invention, the length of the rectangular foundation 10 is a, and the width is b. The foundation width and foundation length in the present invention refer to the distance between the center points of two adjacent bases 11, The section of the base 11 is a square, and the method for dividing the square base into pits is as follows:

[0027] Measure (a-b) / 2 from the foundation center point O along the longitudinal axis of symmetry y to obtain two center points E and F;

[0028] Measure (a+b) / 2 from the foundation center point O along the longitudinal axis of symmetry y and the transverse axis of symmetry x to obtain the first reference point 1, the second reference point 2, and the third reference point Point 3, the fourth reference point 4, the first reference point 1, the second reference point 2, the third reference point 3, the fourth reference point 4 and the two central points E, F are the respectiv...

Embodiment 2

[0033] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is only that the diagonal of the base 11 is determined in a different way. In this embodiment, the diagonal that passes through the reference points 2 and 4 is also based on the longitudinal axis of symmetry y, rotated by 45 ° obtained.

Embodiment 3

[0035] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the selection methods of the sub-center points E and F are different, and at the same time, the determination methods of the diagonals of the base 11 are different. The intersection point of the diagonal line and the transverse axis of symmetry x, and each diagonal line is obtained by rotating 45° based on the axis of symmetry.

[0036] The core principles of the above-mentioned embodiments are: first determine the diagonals of each base 11, and then find the center points A, B, C, and D of the bases 11 through the diagonals. The position accuracy of the base, on the other hand, can use the diagonal to control the position and relative position of each base, which greatly improves the quality of engineering construction.

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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 [0001] The invention belongs to the construction field of transmission towers, and in particular relates to a method for dividing a rectangular foundation of a transmission tower into pits. Background technique [0002] The straight line towers of transmission lines are generally rectangular in cross-section, so the center line of the four concrete foundations that fix their four legs to the ground is also rectangular; the concrete foundation includes four independent bases, and each leg of the transmission tower is composed of a The base is supported, and the cross-section of the base is square, and the four anchor bolts on each leg to fix the tower feet are also arranged in a square; during the foundation casting process, the following errors must be controlled: 1. The same base The cross-sectional size of each step or column, the spacing of the anchor bolts, its coaxiality and relative torsion; 2. The size, shape and center position deviation of the rectan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42
CPCE02D27/42
Inventor 江义勇陈建社吴金海
Owner STATE GRID CORP OF CHINA