Positioning mechanism for tower footing and positioning construction method for tower footing

Abstract

The invention discloses a positioning mechanism for tower footing and a positioning construction method for tower footing. The positioning mechanism for tower footing comprises a rectangular positioning frame which is horizontally arranged, wherein the rectangular positioning frame is composed of two parallel longitudinal positioning rods and two parallel horizontal positioning rods which are connected with each other; horizontal positioning plates are arranged at four intersections of the rectangular positioning frame; the positioning plates are of square shape; the central connecting lines of the four positioning plates are also of rectangular shape; two datum holes used for accommodating the foundation bolts are respectively formed on two diagonal lines of each positioning plate; the datum holes on a same diagonal line are centrally symmetrical about the central point of the diagonal line; the central connecting lines of the four datum holes are also of a rectangular shape; the four datum holes are in same shape and size. According to the invention, the tower footing of the power transmission tower after being constructed is corresponding to the theoretical position and the theoretical size, the central connecting lines of four tower footings are of the rectangular shape and four foundation bolts of the same tower footing are also distributed in rectangular shape.

Description

technical field [0001] The invention belongs to the technical field of transmission tower construction, and in particular relates to a tower base positioning mechanism and a tower base positioning construction method. Background technique [0002] Transmission towers are important facilities in the operation of modern power systems. Transmission towers can overhead wires and play a role of protection and support. Existing transmission towers often use four-piece angle steel composed of four angle steels as the four legs of UHV transmission towers. The four legs are fixed on the four concrete tower foundations on the ground. The four concrete tower foundations are independent of each other. Each leg of the transmission tower They are respectively supported by a concrete tower foundation, the cross-section of which is square, and the four anchor bolts on each leg to fix the tower feet are also arranged in a square shape, and the center connection line of the four concrete towe...

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Problems solved by technology

[0003] However, in the actual construction process of the tower base, there will be the following errors: 1. The center line of the four tower bases cannot reach the rectangle in the design requirements, and the center line of the four tower bases is not consistent in size, shape and center position. Deviations are prone to occur; 2. The four anchor bolts on the same tower foundation cannot be arranged in a square, and the distance between the anchor bolts and their coaxiality and levelness deviate greatly from the design

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