Device for controlling perpendicularity of prestressed concrete pipe pile

Abstract

The invention discloses a device for controlling the perpendicularity of a prestressed concrete pipe pile. The device mainly comprises a clamp, a plumb and a dial, wherein the clamp is composed of anupper clamp and a lower clamp, the upper clamp is connected to a vertical rod through an upper cross rod, and the lower clamp is also connected to the vertical rod through a lower cross rod; and a plumb line is fixed on the upper clamp through a lifting hook, the plumb is connected to the lower part of the plumb line, a plumb point of the plumb makes contact with the dial, and the dial is fixed onthe lower cross rod. The device for controlling the perpendicularity of the prestressed concrete pipe pile has the following advantages that when the first section of the pile is pressed downwards, the perpendicularity is 0.3% (smaller than 0.5% as required by the standard), and in the construction process, the maximum perpendicularity deviation of a pile body is 0.5% (smaller than 1% as requiredby the standard); and the device for measuring the perpendicularity of the pile body is simple in structure and convenient to operate, the perpendicularity of the pile body of the prestressed concrete pipe pile is controlled in real time, the pile forming quality is improved, and the piling progress is accelerated.

Description

technical field [0001] The invention relates to a device for controlling the verticality of prestressed concrete pipe piles, which belongs to the field of construction engineering. Background technique [0002] The concrete strength grade of the prestressed concrete pipe pile is not lower than C80 grade, and the concrete strength is high. The bearing capacity of the single pile is high. After the pile tip enters the bearing layer, after intense extrusion, the bearing capacity of the pile tip is increased by 80% to 100% compared with the undisturbed soil. Wide range of design options. It has strong adaptability to address conditions with large ups and downs in the bearing layer. The cost is low, and its unit bearing capacity price is only 1 / 3 to 2 / 3 of that of steel piles, and steel materials are saved. The transportation and hoisting are convenient, and the pile connection is quick. The single pile can be connected to any length, and is not limited by the ability of cons...

AI Technical Summary

Problems solved by technology

This method is more accurate in measuring data, but requires two theodolites and more construction workers, which not only increases the cost but also takes time

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