CN202718112U

CN202718112U - Rounded-triangular and solid pretensioned prestressing concrete pile

Info

Publication number: CN202718112U
Application number: CN 201220296605
Authority: CN
Inventors: 梁军起
Original assignee: Shanghai Zhongji Pile Industry Co Ltd
Current assignee: Shanghai Zhongji Pile Industry Co Ltd
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2013-02-06
Anticipated expiration: 2022-06-21

Abstract

The utility model discloses a rounded-triangular and solid pretensioned prestressing concrete pile. The cross section of a pile body is designed into a solid rounded-triangle. The sections of the solid pile have the same geometric dimension in the whole longitudinal axis direction. The pile body comprises a reinforcing bar cage and concrete, wherein the concrete is distributed on the inner side and the outer side of the reinforcing bar cage, the reinforcing bar cage consists of main bars and stirrups, the main bars and the stirrups are prestressing reinforcing bars, the main bars are arranged into a rounded triangle and are arranged at the three top points of the rounded triangle, the stirrups are arranged on the main bars, and the stirrups are spirally and continuously welded on the main bars. As the cross section is the solid rounded-triangle, the specific surface area of materials is effectively increased, and the unit materials can have bigger surface area. The pile side friction of the precast pile is increased so as to improve the bearing force of a single pile. The main bars are reasonably arranged into the rounded triangle so that the integrity of the pile body is effectively improved. The built pile has the advantages of large single pile bearing force, great bending resistance, great shearing resistance and strong shock resistance.

Description

A kind of pretensioning prestressed concrete fillet triangle solid pile

Technical field

The utility model belongs to building field, relates to the improvement of foundation pile shape and structure in the building field, is a kind of pretensioning prestressed concrete fillet triangle solid pile specifically.

Background technology

The building materials of foundation pile engineering are more on market, if any pile tube, all kinds of square pile, castinplace pile, drilled pile etc.These pilings mainly are divided into non-prestressed member and prestressed member two large classes.Non-prestressed member mainly comprises traditional square pile, tube-sinking cast-in-situ pile etc.Show as bearing capacity of single pile relatively low, bending resistance (drawing), shear behavior are poor, long construction period, and pile quality does not meet designing requirement.The prestressed pile single pile bearing capacity is relatively high, and bending resistance (drawing), shear behavior are good, short construction period, and pile quality is better, can satisfy design and engine request.

Existing concrete prefabricated units cross section is various, and many on the market is square and circular cross-section, and when conduct carrying effect member, its maximum purpose is to improve the pile body bearing capacity that unit materials can provide, thereby economical with materials reduces cost.The very large characteristics of preformed pile are a side and soil interaction, utilize the frictional force between stake and the soil to improve pile body bearing capacity.

Circular cross-section is other shaped cross specific area less relatively, therefore do not take advantage at pile tube aspect the raising stake side-friction force; Square pile and soil body frictional force are larger, and the bearing capacity ratio pile tube is good, but solid square pile is heavy, feed consumption is many; Hollow square pile combines the advantage of pile tube and square pile preferably, and outer cross section is square, and interior cross section is circular, can improve a side-friction force comparatively speaking, but its cross section concrete thickness differs, and the frictional force of unit volume material also is not fully exerted.

Summary of the invention

In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to be to provide a kind of pretensioning prestressed concrete fillet triangle solid pile, few, the material-saving of building loss, from the characteristics of heavy and light.

To achieve these goals, the technical solution adopted in the utility model is:

A kind of pretensioning prestressed concrete fillet triangle solid pile, described pile body cross section is solid fillet triangle, solid pile is identical in whole y direction cross section geometry, described pile body comprises reinforcing cage and concrete, described concrete is distributed in the inside and outside both sides of reinforcing cage, reinforcing cage is made of main muscle and stirrup, and described main muscle and stirrup are prestressed reinforcement.

Described main muscle is the fillet triangular layout, and is arranged on leg-of-mutton three summits of fillet, and described stirrup is arranged on the main muscle.

What stirrup was continuous in the shape of a spiral is welded on the main muscle.

Described fillet triangle is equilateral triangle, and the summit is arc transition.

By technique scheme, the beneficial effects of the utility model are:

Because cross section of the present utility model is solid fillet triangle, effectively raises the specific area of material, can make unit materials have larger surface area, thereby the stake side-friction force of raising preformed pile is to improve bearing capacity of single pile; Its corner is stress and eliminates circular arc, and corner is easy to moulding, can effectively improve the pile rate.

Described main muscle is the fillet triangular layout, on structure, the utility model master muscle is rationally distributed, reinforcing cage in the shape of a spiral stirrup effectively raise the globality of pile body to be welded, bearing capacity of single pile is large behind the construction pile, the bending resistance shear behavior is good, shock resistance is strong.

Description of drawings

In order to be illustrated more clearly in this patent embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiment of this patent, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is top view of the present utility model;

Fig. 2 is stereogram of the present utility model;

Fig. 3 is dimensional drawing of the present utility model.

Numeral and the represented corresponding component title of letter among the figure:

1, main muscle 2, concrete 3, stirrup 4, circular arc a, stirrup spacing m, external protection concrete thickness

The specific embodiment

For technological means, creation characteristic that this patent is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth this patent.

Extremely shown in Figure 3 referring to Fig. 1, a kind of pretensioning prestressed concrete fillet triangle solid pile, described pile body cross section is solid fillet triangle, solid pile is identical in whole y direction cross section geometry, described pile body comprises reinforcing cage and concrete 2, described concrete 2 is distributed in the inside and outside both sides of reinforcing cage, and reinforcing cage is made of main muscle 1 and stirrup 3, and described main muscle 1 and stirrup 3 are prestressed reinforcement.

Described main muscle 1 is the fillet triangular layout, and is arranged on leg-of-mutton three summits of fillet, and described stirrup 3 is arranged on the main muscle 1.

What stirrup 3 was continuous in the shape of a spiral is welded on the main muscle 1.

The radius size of described fillet vertex of a triangle circular arc 4 suitably changes according to actual needs.

Described stirrup spacing a need suitably change according to reality.

Described external protection concrete thickness m need suitably change according to reality.

Above demonstration and described the basic principle of this patent and the advantage of principal character and this patent.The technician of the industry should understand; this patent is not restricted to the described embodiments; the principle that this patent just is described of describing in above-described embodiment and the manual; under the prerequisite that does not break away from this patent spirit and scope; this patent also has various changes and modifications, and these changes and improvements all fall in the claimed this patent scope.The claimed scope of this patent is defined by appending claims and equivalent thereof.

Claims

1. pretensioning prestressed concrete fillet triangle solid pile, it is characterized in that, described pile body cross section is solid fillet triangle, solid pile is identical in whole y direction cross section geometry, described pile body comprises reinforcing cage and concrete, described concrete is distributed in the inside and outside both sides of reinforcing cage, and reinforcing cage is made of main muscle and stirrup, and described main muscle and stirrup are prestressed reinforcement.

2. a kind of pretensioning prestressed concrete fillet triangle solid pile according to claim 1 is characterized in that, described main muscle is the fillet triangular layout, and is arranged on leg-of-mutton three summits of fillet, and described stirrup is arranged on the main muscle.

3. a kind of pretensioning prestressed concrete fillet triangle solid pile according to claim 1 is characterized in that, what stirrup was continuous in the shape of a spiral is welded on the main muscle.