Anchor bolt group device for improving anti-cracking performance of power transmission tower pile foundation and manufacturing method

Abstract

The invention provides an anchor bolt group device for improving the anti-cracking performance of a power transmission tower pile foundation and a manufacturing method. The manufacturing method comprises the steps that the sizes of anchor bolts are calculated according to the tensile design load, and meanwhile the specifications of the anchor bolts are selected; drilling is conducted at the givenheight on each anchor bolt, the anchor bolts are positioned, the axis of a hole channel passes through the center of an anchor bolt group during positioning, an annular steel sheet with a certain width is manufactured to wrap the anchor bolt group, the contact points of the anchor bolts and the annular steel sheet are determined, drilling is conducted at the contact points, the hole diameter of the annular steel sheet is the same as that of holes in the anchor bolts, and finally the annular steel sheet is welded into a circle of whole; the anchoring length of vertical steel bars exceeding thefracture surface of a cone is calculated, and the length of the horizontal sections of the steel bars is determined according to the proper distance between the vertical steel bars; the steel bars aremanufactured and bent into two sections, and the ends of the steel bars need to be bent into hooks; and the horizontal sections of the steel bars are inserted into the holes of the annular steel sheet and the hole channels of the anchor bolts, and the like. According to the anchor bolt group device for improving the anti-cracking performance of the power transmission tower pile foundation and themanufacturing method, the problems that the tensile bearing capacity of the power transmission tower foundation anchor bolt group is low, the foundation is prone to cracking, construction positioningis complex, and the consumed cost is high can be solved.

Description

technical field [0001] The invention relates to the technical field of transmission tower foundations, in particular to an anchor bolt group device and a manufacturing method for improving the anti-crack performance of transmission tower pile foundations Background technique [0002] With the continuous development of domestic and foreign power grids, the number and grade of transmission lines are increasing. At the same time, the geological environment conditions that transmission lines pass through are becoming more and more diverse, and the loads on transmission towers are also increasing. The load borne by the tower needs to be transmitted to the ground through the foundation, so engineering practice has higher and higher requirements for the foundation of the transmission tower. According to relevant investigations, poor foundation design is an important factor in many transmission line safety accidents in the past. Due to the frequent occurrence of transmission tower ...

AI Technical Summary

Problems solved by technology

[0003] The damage of transmission lines will not only cause huge direct losses, but also cause more serious indirect losses due to the remote location of transmission lines in high-altitude areas and poor infrastructure such as communication and transportation. It takes a long time to repair

The foundation of the transmission tower adopts concrete pile foundation, the structure depth is relatively large and it is located underground, it is difficult to reinforce and repair if cracks occur

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