CN202787250U

CN202787250U - Pre-tensioning method prestress solid pile

Info

Publication number: CN202787250U
Application number: CN 201220296599
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: 2013-03-13
Anticipated expiration: 2022-06-21

Abstract

The utility model discloses a pre-tensioning method prestress solid pile. A cross section of a pile body is a solid rounded corner triangle. The pile body comprises a reinforcement cage and concrete. The concrete is distributed at the inner side and the outer side of the reinforcement cage. The reinforcement cage is composed of main reinforcement and stirrups. The stirrups are arranged on the main reinforcement which is arranged in a rounded corner triangle mode. The main reinforcement is six pieces in number and is respectively arranged on three vertexes of the rounded corner triangle and middle points of three sides, wherein the three pieces of the main reinforcement located on the three vertexes of the rounded corner triangle are non-prestressed reinforcement, and the three pieces of the main reinforcement located on the middle points of the three sides are prestressed reinforcement. The sizes of sections of the pile body in the whole y-direction are identical, the non-prestressed reinforcement and the prestressed reinforcement are adopted, common advantages of the non-prestressed reinforcement and the prestressed reinforcement are combined, the cross section of the reinforcement is shaped like a rounded corner triangle, the specific surface area of materials is effectively improved, the main reinforcement is arranged in the rounded corner triangle mode, bearing capacity of a single pile after the pile is formed is large, bending resistance and shearing resistance are good, and shock resistance is strong.

Description

A kind of pretensioned prestressing 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 pretensioned prestressing 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.It is relatively low to show as bearing capacity of single pile, and bending resistance (drawing), shear behavior are poor, long construction period, and pile quality does not meet designing requirement.The prestressed member piling comprises, pile tube, centrifugal prestress square pile etc.Their shortcoming is, often fragility is larger, and is shorter from the cracking to the time to rupture, and pile body ductility is relatively poor, causes the moment building collapsing when earthquake occurs, and makes that personnel do not have the sufficient time escape in the building.This problem is particularly outstanding in many shakes area such as Japan, Taiwan, China.Before, most of prefabricated pilings mostly are non-prestressed or prestressing force, and above-mentioned shortcoming is difficult to avoid.

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.

Relative and the section ratio surface area less of circular cross-section is not so 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.

In the recent period, special-shaped fillet triangular pile also occurs, but reinforcement ratio is lower, pile body globality, shearing resistance bending resistance tensile property are difficult to satisfy the engineering demand of high requirement.

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 pretensioned prestressing 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 pretensioned prestressing solid pile, described solid pile comprises reinforcing cage, concrete, described concrete are distributed in the inside and outside both sides of reinforcing cage.

Described reinforcing cage is made of main muscle and stirrup, the main muscle of described reinforcing cage is the fillet triangular layout, main muscle is the six roots of sensation, be arranged at respectively on the mid point on leg-of-mutton three fillets of fillet and three limits, described stirrup is arranged on the main muscle, 3 main muscle that are positioned at leg-of-mutton three fillets of fillet are nonprestressed reinforcement, and 3 main muscle that are positioned on the three limit mid points are prestressed reinforcement.

Described solid pile cross section is fillet fillet triangle, and described solid pile is identical in whole y direction cross section geometry.

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

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

Because the utility model had both adopted nonprestressed reinforcement, adopted again prestressed reinforcement, in conjunction with the common advantage of prestressing force and non-prestressed member, be more suitable for engineering and use.

Because, cross section of the present utility model is fillet fillet triangle, and the corner is stress and eliminates circular arc, 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.

Because, main muscle of the present utility model is the fillet triangular layout, on structure, the utility model master muscle is rationally distributed, reinforcing cage in the shape of a spiral stirrup to be welded, effectively raise the globality of pile body, 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 the utility model 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 embodiment more of the present utility model, 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 the utility model top view;

Fig. 2 the utility model elevation;

Fig. 3 the utility model dimensional drawing.

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

1, nonprestressed reinforcement 1 ', prestressed reinforcement 2, concrete 3, stirrup 4, fillet

A, stirrup spacing m, external protection concrete thickness

The specific embodiment

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

Extremely shown in Figure 3 referring to Fig. 1, a kind of pretensioned prestressing solid pile, described solid pile comprises reinforcing cage, concrete 2, described concrete 2 is distributed in the inside and outside both sides of reinforcing cage.

Described reinforcing cage is made of main muscle and stirrup, the main muscle of described reinforcing cage is the fillet triangular layout, main muscle is the six roots of sensation, be arranged at respectively on the mid point on leg-of-mutton three fillets of fillet and three limits, described stirrup is arranged on the main muscle, 3 main muscle that are positioned at leg-of-mutton three fillets of fillet are nonprestressed reinforcement 1, and 3 main muscle that are positioned on the three limit mid points are prestressed reinforcement 1 '.

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

Indication fillet 4 large I suitably change.

Described stirrup spacing a can suitably change.

Described external protection concrete thickness m can suitably change.

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

Claims

1. pretensioned prestressing solid pile, it is characterized in that, the pile body cross section is solid fillet triangle, described pile body comprises reinforcing cage and concrete, described concrete is distributed in the inside and outside both sides of reinforcing cage, described reinforcing cage is made of main muscle and stirrup, described stirrup is arranged on the main muscle, described main muscle is the fillet triangular layout, main muscle is the six roots of sensation, be arranged at respectively on leg-of-mutton three summits of fillet and the three limit mid points, three main muscle that are positioned at leg-of-mutton three summits of fillet are nonprestressed reinforcement, and three main muscle that are positioned on the three limit mid points are prestressed reinforcement.

2. a kind of pretensioned prestressing solid pile according to claim 1 is characterized in that, described stirrup in the shape of a spiral, and continuous being welded on the main muscle.

3. a kind of pretensioned prestressing solid pile according to claim 1 is characterized in that, described pile body is identical in whole y direction cross section geometry.