CN2816131Y

CN2816131Y - Conic prefabricated concrete spiral pile

Info

Publication number: CN2816131Y
Application number: CN 200520092392
Authority: CN
Inventors: 张成金; 王家伟; 梁力; 陈日宏; 王鸿祥
Original assignee: ZHONGYE SHENKAN ENGINEERING TECHNOLOGY Co Ltd
Current assignee: ZHONGYE SHENKAN ENGINEERING TECHNOLOGY Co Ltd
Priority date: 2005-09-07
Filing date: 2005-09-07
Publication date: 2006-09-13
Anticipated expiration: 2015-09-07

Abstract

The utility model relates to a conic prefabricated concrete spiral pile, which comprises a pile body. The utility model is characterized in that the pile body is a conical body, and the external surface of the pile body is provided with a spiral disk; the pile body can also be formed by the fixed connection of a pile and the cusp of the pile; the section of the spiral disk on the external surface of the pile body is in the shape of trapezoid or triangular. The utility model has the advantages of no vibration, no noise, no pollution in construction drilling, and also has the advantage of high construction efficiency, reliable construction quality, low cost, simple apparatus, and convenient operation; the utility model has the extrusion and the compaction functions to soil around piles so as to play extrusion and reinforcing effects, the utility model can increase the bearing capacity of the piles, and construction is free from seasonal influences; the shapes of the piles are accorded with the stress physical property of pile foundations, the stress of the upper part of the pile body is big, the stress of the lower part is small, the pile diameter of the upper part is large so as to have big compressive capacity is high and the diameter of the lower part is small so as to save raw materials.

Description

Tapered concrete screw pile

(1) technical field

The utility model relates to a kind of system of giving stake of Foundation Design special use, refers to a kind of taper concrete screw pile especially.

(2) background technology

For a long time, give in the system pile driving construction at squash type, pile driving method by hammer, vibrosinking and pile jacking in method become current main means of giving the system pile driving construction, along with development of science and technology and environment-friendly type construction requirement, above-mentioned pile driving method by hammer and vibrosinking are because vibration is big, social effects of pollution such as noise height progressively are restricted and eliminate, and being twentieth century, pile jacking in method grows up the fifties, though advantage is a lot, as: the efficiency of construction height, cost is low, advantages such as reliable in quality and no social effects of pollution, but because the equipment heaviness, cost of transportation height, the scope of application little (being only applicable to soft foundation), and, this technology is promoted be restricted space, construction plant and place soil bearing capacity problem such as have relatively high expectations.

(3) summary of the invention

The purpose of this utility model is to provide a kind of screw-in tapered concrete screw pile, and this screw pile can rely on cycling method directly to screw in and form post in the ground by machine power.

The technical scheme that adopts is:

Tapered concrete screw pile comprises pile body, it is characterized in that described pile body is a bullet, has helical disk on its external surface.

Above-mentioned pile body also can be made of sharp the fixedlying connected of pile body and stake.

The section of the helical disk on the above-mentioned pile body external surface is trapezoidal or triangle.

Major advantage of the present utility model:

1, middle friction, noiselessness, social effects of pollution such as pollution-free are crept in construction, are a kind of civilized environment-friendly type job practicess.

2, the soil around the stake there is the extruding densification, plays the ground extruding effect, can improve the bearing capacity of stake greatly.

3, efficiency of construction height, reliable construction quality, cost is low, can reduce construction costs greatly.

4, equipment is simple, easy to operate, and personnel selection reduces labour intensity less, greatly.

5, construction is not subjected to seasonal effect, winter construction to have more advantage.

6, the stake type meets the stressed rerum natura of pile foundation, and pile body top is stressed big, and the bottom is stressed little, the big anti-pressure ability height in top stake footpath, and lower diameter is little, can save raw material.

(4) description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the structural representation of the another kind of embodiment of the utility model.

(5) specific embodiment

See also Fig. 1, tapered concrete screw pile of the present utility model comprises pile body 1, is characterized in that pile body 1 for once giving the bullet of the type of making, has helical disk 2 on the external surface of pile body, and the section of helical disk 2 is a triangle.

See also Fig. 2, pile body 1 of the present utility model also can be fixedlyed connected with stake point 4 by pile body 3 and constituted.The section of above-mentioned helical disk 2 is that triangle is specific embodiment behind the utility model, is the trapezoidal protection domain of the present utility model that also belongs to for the section of helical disk 2.

Claims

1, tapered concrete screw pile comprises pile body (1), it is characterized in that described pile body (1) is a bullet, has helical disk (2) on its external surface.

2, tapered concrete screw pile according to claim 1 is characterized in that described pile body (1) fixedlys connected formation by pile body (3) with stake point (4).

3, tapered concrete screw pile according to claim 1 is characterized in that the section of the helical disk (2) on described pile body (1) external surface is trapezoidal or triangle.