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Semi-girder type steel pipe pile and construction method thereof

A steel pipe pile and arm type technology, which is applied to sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as low bearing capacity and smooth side walls, and achieve improved strength, convenient operation, increased side friction and The effect of carrying capacity

Active Publication Date: 2018-11-13
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an outrigger type steel pipe pile, which can solve the technical problems of smooth side walls and low bearing capacity of existing steel pipe piles, so that the side friction resistance and bearing capacity are greatly improved, and can be applied to building foundations reinforcement

Method used

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  • Semi-girder type steel pipe pile and construction method thereof
  • Semi-girder type steel pipe pile and construction method thereof
  • Semi-girder type steel pipe pile and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as Figure 1-3 Shown:

[0041] An outrigger type steel pipe pile, comprising a pile body 1 and a pile tip 2, the pile body 1 is a steel pipe structure, the pile tip 2 is a conical structure with a closed bottom, the pile body 1 and the pile tip 2 are integrally formed , the inside of the pile body 1 is a cavity structure, and the pile body 1 is connected with an outrigger 4 that can extend out of the pile body 1 and insert into the soil; after the outrigger is inserted into the soil, the steel pipe pile is greatly increased. The side friction and bearing capacity meet the requirements of building foundation reinforcement and expand the scope of application;

[0042] The outrigger 4 is a hollow structure with one end closed and the other end open, and the cavity communicates with the hollow structure through the opening; the outrigger 4 includes a first outrigger 4-1 arranged perpendicular to the pile body 1 and a Inclined to the second outrigger 4-2 that pile bod...

Embodiment 2

[0054] Embodiment 2 is the construction method of Embodiment 1, and the specific method is: a construction method of an outrigger type steel pipe pile, and its specific steps are as follows:

[0055] 1) Provide an outrigger type steel pipe pile as described in Embodiment 1;

[0056] 2) Set out the line to determine the pile position, use the suspension ring to suspend the outrigger type steel pipe pile directly above the pile position, and align the pile tip with the middle position of the pile position;

[0057] 3) Start the pile driver and slowly insert the outrigger steel pipe pile into the foundation;

[0058] 4) When the pile body reaches the predetermined depth, cover the pile cover 3, use a high-pressure air pump to inject high-pressure gas into the cavity through the high-pressure inflation hole 31 on the pile cover 3, and stabilize the pressure for 13-18 minutes to ensure that the extension The arm 4 is fully stretched out and inserted into the soil body;

[0059] 5...

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Abstract

The invention relates to a semi-girder type steel pipe pile and a construction method thereof. The semi-girder type steel pipe pile comprises a pile body and a pile point, the pile body is of a steelpipe structure, and the semi-girder type steel pipe pile is characterized in that pile point is of a conical structure with the sealed bottom, the pile body and the pile point are integrally formed, acavity structure is arranged in the pile body, and the pile body is connected with a semi-girder capable of stretching out of the pile body and being inserted into soil; and the semi-girder is of a hollow structure with a sealed end and an open end, and a cavity communicates with the hollow structure through an opening; and the semi-girder comprises a first semi-girder body perpendicular to the pile body and a second semi-girder body inclined relative to the pile body. The friction resistance and bearing capacity of the steel pipe pile are greatly improved, and the semi-girder type steel pipepile is suitable for reinforcing a building foundation.

Description

technical field [0001] The invention relates to the technical field of steel piles, in particular to an outrigger type steel pipe pile and a construction method thereof. Background technique [0002] Engineering piles are divided into concrete piles, steel piles and composite material piles according to the pile material; [0003] Steel pipe pile is a kind of steel pile, which has the advantages of light weight and high bearing capacity. At present, it is widely used in marine engineering. However, the side wall of the steel pipe pile is smooth and the friction coefficient of the pile body is low. In view of this, the steel pipe pile is rarely used to strengthen the building foundation. [0004] In response to the above defects, the Chinese patent (publication number: CN106869106A) proposed a method for reinforcing the foundation with welded flank-type steel pipe piles. When the length of the ordinary steel pipe pile reaches two-thirds of the design pile length, use the fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/48E02D5/50E02D5/62
CPCE02D5/48E02D5/50E02D5/62
Inventor 王颖胡振华李勇李允
Owner SHANDONG UNIV OF SCI & TECH
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