Pipe column for prestress anchor rod, anchor rod and construction method

Abstract

The invention relates to a pipe column for a prestress anti-floating tensile reinforcing steel bar combined anchor rope. The pipe column comprises a concrete prefabricated pipe column body provided with a framework of steel reinforcement, and the pipe column can accommodate the reinforcing steel bar of the anchor rod. The inner diameter of the pipe column is 3-7 cm and the outer diameter of the pipe column is 14-30 cm. The framework of steel reinforcement is arranged in the concrete prefabricated pipe column. The combined anchor rope is a pre-tensioning prestress anti-floating tensile reinforcing steel bar anchor rope. The pipe column is a pipe column shaped jacket of the reinforcing steel bar of the anchor rod. The reinforcing steel bar of the anchor rod penetrates the pipe column, carrying plates which are provided with holes in the center and are greater than the inner diameter of the pipe column are placed at two ends of a product pipe column, and the reinforcing steel bar ends arefixed to the carrying plates or are welded and fixed to the carrying plates when stress is applied to the anchor rod exposed on the surfaces of the carrying plates. The reinforcing steel bar is a single finish rolled anchor rod reinforcing steel bar or comprises a plurality of finish rolled anchor rod reinforcing steel bars. When the finish rolled anchor rod reinforcing steel bars are used, the carrying plates need a prestress applying device provided with multiple holes and reinforcing steel bars.

Description

technical field [0001] The invention relates to a new type of prestressed anchor rod, especially a pre-tensioned or post-tensioned (prefabricated) assembled prestressed anchor rod assembly and construction method, which is a prefabricated assembled anti-floating and tensile anchor rod assembly ( There are two kinds of bonded and non-bonded) and the prestressing method of the method, including the pipe column components for the anchor pile foundation described in the present invention, etc. Background technique [0002] The straight-through or enlarged head prestressed bolt technology is a new type of underground engineering application technology, which is in line with the spirit of "energy saving, emission reduction, and green development" advocated by the state. Compared with the general traditional technology, it is more economical and environmentally friendly in solving basement anti-floating and foundation pit support; at the same time, it also has greater advantages in...

AI Technical Summary

Problems solved by technology

The main defect of this method of deformation control is that the prestress can only be applied after the base plate construction is completed and reaches the design strength, which will greatly delay the construction period. The degree of damage will adversely affect the waterproofing of the basement. At the same time, the requirement for the foundation pit precipitation will be longer, and the relative cost will increase more.

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