CN218622297U

CN218622297U - Deep foundation pile

Info

Publication number: CN218622297U
Application number: CN202022719966.4U
Authority: CN
Inventors: 童金清; 刘建刚; 王磊; 陈远
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2023-03-14
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a deep foundation pile, enlarged footing at the bottom of pile body, stake, the pile body includes the peripheral stake as first stake and the core stake as the second stake, and the core stake inserts in the enlarged footing. The utility model discloses quality safe and reliable, construction convenience. The utility model discloses basic expansibility can be good, can explore the innovation as green assembled building to underground space geotechnical engineering, accords with the development direction of national green building.

Description

Deep foundation pile

Technical Field

The utility model relates to a pile.

Background

The existing deep foundation pile generally needs to be subjected to enlarged footing construction, the pile body structure cannot be well matched with the enlarged footing at the bottom, the expansion performance is not ideal, and further improvement is needed.

Disclosure of Invention

An object of the utility model is to provide a pile body structure and the fine cooperation of enlarged footing of bottom, the deep foundation pile that the extension foundation performance is good.

The technical solution of the utility model is that:

the deep foundation pile comprises a pile body and an enlarged head at the bottom of the pile, and is characterized in that: the pile body includes a peripheral pile as a first pile and a core pile as a second pile, the core pile being inserted into the enlarged head.

The second pile is an outer prefabricated inner cast-in-place pile or an inner prefabricated outer cast-in-place pile. A layer of deformable, compressible material is provided beneath the bottom of the second pile.

The utility model discloses quality safe and reliable, construction convenience. The utility model discloses basic expansibility can be good, can explore the innovation as green assembled building to underground space geotechnical engineering, accords with the development direction of national green building.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

A deep foundation pile comprises a pile body and an enlarged head 1 at the bottom of the pile body, wherein the pile body comprises a peripheral pile 3 as a first pile and a core pile 2 as a second pile, and the core pile is inserted into the enlarged head.

The second pile is an outer prefabricated inner cast-in-place pile or an inner prefabricated outer cast-in-place pile. A layer of deformable, compressible material (e.g. sand, foam) is provided beneath the second pile base.

Firstly, constructing a first pile, wherein the first pile is a cast-in-place pile; constructing a second pile;

the second pile construction method is one of the following methods:

a) The second pile is an external prefabricated and internal cast-in-place pile, and the construction method comprises the following steps:

(1) In-place: the outer pipe is concentrically positioned on a set first pile position;

(2) Sinking the tube: sinking the outer pipe to a set depth;

(3) Bottom expanding: carrying out bottom expanding construction according to a construction method of the pile bottom expanding head, and pressing out a concave part on the upper part of the expanding head; a layer of deformable, compressible material (e.g., sand, foam) is added to the recess as desired.

(4) No-pipe-drawing pouring molding: placing the reinforcement cage into the outer pipe, pouring fluid concrete to form a reinforced concrete mixed pile body in the outer steel pipe, wherein the pile body extends into the concave of the enlarged head;

b) The second pile is an inner prefabricated and outer cast-in-place pile, and the construction method comprises the following steps:

(2) Sinking the tube: sinking the outer pipe to a set depth;

(3) Bottom expanding: carrying out bottom expanding construction according to the construction method of the pile bottom expanding head, and pressing the upper part of the expanding head to be concave; a layer of deformable, compressible material (e.g., sand, foam) is added to the recess as desired.

(4) Pipe drawing and pouring molding: the prefabricated pile is placed into the outer pipe, the hammer of the inner tamping pipe is propped against the prefabricated pile head, the filler is put into a cavity between the outer pipe and the prefabricated pile body, the prefabricated pile is vibrated and pressed to be pulled upwards, the prefabricated pile is repeatedly vibrated, pressed to sink and pulled upwards, the filler fills the cavity, the terrace pulled out of the outer pipe forms a convex, concave-convex or bamboo-joint-shaped filler pile body, and the pile body extends into the concave of the enlarged head.

Claims

1. The deep foundation pile comprises a pile body and an enlarged head at the bottom of the pile, and is characterized in that: the pile body comprises a peripheral pile as a first pile and a core pile as a second pile, and the core pile is inserted into the expanded head; a layer of deformable, compressible material is provided beneath the bottom of the second pile.

2. The deep foundation pile of claim 1, wherein: the second pile is an outer prefabricated inner cast-in-place pile or an inner prefabricated outer cast-in-place pile.