Pile, pole interface positioning device and construction method

Abstract

The invention discloses a pile / post interface positioning device as well as the construction method thereof. After a pile hole is drilled, a steel reinforcement cage and a steel casing are hung into the pile hole, concrete is poured into the pile hole until exceeding the height mark on the top surface of the pile foundation, then the concrete laitance at the pile head is chiseled off to expose a pre-buried anchoring foundation, and the pile / post interface positioning device is arranged in the steel casing and is permanently connected with the pre-buried anchoring foundation through bolts, and then anchoring concrete is poured; when a steel pipe column is laid, the root part thereof is sleeved at the periphery of the pile / post interface positioning device, and the concrete is poured into a cup-mouth structure, then the concrete is poured into the steel pipe column, and then backfilling sand is filled in until reaching the ground surface; finally, the steel casing is pulled out in a way that the lowermost end of the steel casing is left. The delivering plate of the pile / post interface positioning device is a cross-shaped standing plate, the cross-section of the cross-shaped standing plate presents a cross shape, the diameter of the cross-shaped standing plate gradually diminishes from the middle lower part to the top part, a positioning bottom plate is welded with a ground anchor reinforcing steel bar on the lower surface, and long circular positioning holes which are radially distributed are formed on the positioning bottom plate. The invention solves the problem that the steel pipe column and the foundation pile are not fast and precisely positioned.

Description

technical field [0001] The invention relates to a positioning device for connecting a steel pipe column and a foundation pile, and a construction method for applying the positioning device to an underground structural pile and column integration system. Background technique [0002] At present, the construction of steel pipe columns in subway stations and underground structural projects using the cover-excavation method mostly adopts artificial drilling to the elevation of the pile interface, and then uses mechanical drilling to pour concrete into foundation piles from there, and then positions the steel pipe columns on the top of the piles. At the lower end, the method of finally installing the steel pipe column or excavating a shaft to the bottom elevation of the steel pipe column, then excavating a small horizontal pilot hole to locate the lower end of the steel pipe column, and finally installing the steel pipe column. The method has the defects of complicated procedures...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a pile-column interface positioning device and its construction method, to solve the technical problem of fast and accurate positioning of the steel pipe column and the foundation pile; and to solve the traditional construction method with complicated procedures and long construction period , waste of manpower and material resources, and the danger of construction workers

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