CN202672138U - Centrifugal concrete rectangular pile - Google Patents

Abstract

The utility model provides a centrifugal concrete rectangular pile. Two ends of the rectangular pile are respectively provided with a rectangular end plate. Two end plates are connected through a steel reinforcement cage, and concrete wrapping the steel reinforcement cage is filled between the two end plates, forming the concrete rectangular pile. The centrifugal concrete rectangular pile is advantageous in that the centrifugal concrete rectangular pile has a high level of crushing strength and can provide high bearing and high strength assurance rate for a C60-C80 single pile; a pre-stress member is adopted, and thereby self-weight is light, conveying and stacking are convenient, and piles during hoisting, conveying and transshipment are not easy to be damaged, and construction breakage ratio is low; end plates are adopted at two ends, and piles are connected through welding, and thereby pile-forming integrity is good; bending-resisting rigidity of a pile body is large, pile segment is long and usage scope is wide.

Description

A kind of centrifugal concrete rectangular pile

Technical field

The utility model relates to a kind of centrifugal concrete rectangular pile and moulding form.

Background technology

Existing preformed pile has a lot, if any solid square pile, hollow square pile, pile tube etc.Solid square pile, hollow square pile are generally non-prestressed prefabricated units, and anti-bending strength is poor, and lifting, transportation, construction transhipment easily cause pile body crack even fracture to occur; The employing shaping of vibrating, concrete strength grade is generally C30～C40, and the pile body structural bearing capacity is lower, and the external form physical dimension is irregular, easily clips broken in the construction, and the stake breakage rate is high, less economical; The pile body steel using amount is large, and is uneconomical.

Solid square pile is from great in addition, though hollow square pile adopts the drawing method moulding, from heavy and light, other problem still exists.

Though pile tube is centrifugal forming, have the high advantage of pile shaft concrete strength, pile tube external surface size is little, and the single pile bearing capacity of foundation soil that provides is lower; Bending resistance is not high.

Summary of the invention

The purpose of this utility model aims to provide a kind of centrifugal concrete rectangular pile and moulding form, and this stake is from heavy and light, and transportation, stacking are conveniently, not fragile when lifting, transportation, transhipment, the construction breakage rate is low, becomes pile integrality good, the pile body bending rigidity is large, and pile body construction length is darker, and the scope of application is wide.

The technical scheme of the utility model purpose is a kind of centrifugal concrete rectangular pile, and wherein: the two ends of this rectangular pile are provided with the rectangle end plate, and the two ends plate connects by reinforcing cage, is filled with the concrete that wraps reinforcing cage between the two ends plate, forms the concrete rectangular pile.

The utility model has the following advantages:

1, the stake manufacture craft is advanced, the overall dimensions rule, and the length of side is unrestricted, usually adopts 200～800mm, and the pile strength fraction is high, and the construction breakage rate is low;

2, strength grade of the concrete of a stake is high, is C60～C80, and the bearing capacity that single pile can provide is high, good economy performance;

3, adopt prestressed member, from heavy and light, transportation, stacking are conveniently, and be not fragile when lifting, transportation, transhipment;

4, end plate is adopted at two ends, and stake is adopted with stake and is welded to connect, and becomes pile integrality good;

5, the pile body steel ratio is low, good economy performance; A kind of centrifugal concrete rectangular pile and moulding form

6, the pile body bending rigidity is large, and pile cutoff is long, and the scope of application is wide.

Description of drawings

Fig. 1 is centrifugal concrete rectangular pile structural representation of the present utility model;

Fig. 2 is end plate structural representation of the present utility model;

Fig. 3 a is the forming die structure schematic diagram of centrifugal concrete rectangular pile of the present utility model;

Fig. 3 b is that A-A of Fig. 3 a is to view.

The specific embodiment

By reference to the accompanying drawings a kind of centrifugal concrete rectangular pile of the present utility model and moulding form are illustrated.

A kind of centrifugal concrete rectangular pile of the present utility model, the two ends of this rectangular pile are provided with rectangle end plate 1, and the two ends plate connects by reinforcing cage 2, is filled with the concrete that wraps reinforcing cage 2 between the two ends plate 1, forms the concrete rectangular pile.The central authorities of described rectangle end plate 1 and pile body are equipped with isometrical concentrically ringed endoporus 4.The thickness of described rectangle end plate 1 is 12～27mm, and along bolt hole and the towing pad of a plurality of mutual UNICOMs of rectangle end plate even distribution all around, the aperture of bolt hole is greater than the aperture of towing pad.

The used main muscle of described reinforcing cage is prestressed reinforcement or plain bars, and centrifugal concrete rectangular pile external surface is shiny surface or textured.

The moulding form of the utility model centrifugal concrete rectangular pile adopts the pipe die by two make-ups, it is identical inequilateral right-angled triangle inner chamber 6 that a cross section is arranged in the every pipe die, after two pipe dies are interlocked with bolt 7, two inequilateral right-angled triangle inner chambers consist of a rectangle inner chamber, four jiaos of described rectangle inner chamber is arc chord angle, equally spacedly on every pipe die of described two make-up pipe dies is provided with a plurality of running wheels 5.

As shown in Figure 2, the central bore 4 of the rectangle end plate 1 of centrifugal concrete rectangular pile of the present utility model, pile cutoff cross section is isometrical concentric circles.Rectangle end plate 1 is thick 12～27mm, round-meshed steel plate in the foreign side, and along bolt hole, the stress hole of peripheral a plurality of mutual UNICOMs that are equally spaced, the aperture of bolt hole is large, and in order to connecting tensioning equipment, the aperture of stress hole is little, is support skeleton pier nose.

The used main muscle of reinforcing cage can be prestressed reinforcement or plain bars, is used for making prestressed centrifugally concrete rectangular pile, and the used main muscle 3 of reinforcing cage is prestressed reinforcements, is used for making common centrifugal concrete rectangular pile, and used main muscle 3 is plain barss.

Shown in Fig. 3 a, Fig. 3 b, the moulding form of centrifugal concrete rectangular pile of the present utility model, employing is by the pipe die of two make-ups, the identical inequilateral right-angled triangle of a geometry inner chamber 6 is arranged in the every mould, employing is by the pipe die of two make-ups, it is identical inequilateral right-angled triangle inner chamber 6 that a cross section is arranged in the every mould, after two pipe dies are interlocked with bolt 7, two inequilateral right-angled triangle inner chambers consist of two formed rectangles of inequilateral right-angled triangle of a rectangle inner chamber, and four interior angles are arc chord angle.

Adopt the step of the utility model mould preparative centrifugation concrete rectangular pile as follows:

Place a pipe die, the two ends plate at reinforcing cage and two ends is placed wherein, pour concrete, another piece pipe die closes, and with bolt 7 fastenings, then be put in centrifugal dehydration on the centrifuge, namely form the centrifugal concrete rectangular pile, steam-cured to C40 again, the demoulding, steam pressure or natural curing are to more than the C80 again

Prestressed centrifugally concrete rectangular pile of the present utility model and pile tube, hollow rectangle stake, Filled Rectangle stake have been done contrast, and its ratio the results are shown in following table:

Contrast is as seen from table:

1, the utility model is with respect to pile tube φ 400, hollow rectangle stake, Filled Rectangle pilework bearing capacity height;

2, the utility model is large with respect to pile tube φ 400, pile tube φ 500 bearing capacity of foundation soil;

3, the utility model is few with respect to Filled Rectangle stake concrete piles consumption;

4, the utility model is few with respect to all piles master muscle consumption;

5, the utility model is large with respect to other bending rigidities of equivalent diameter or the length of side.

Claims (5)

1. centrifugal concrete rectangular pile, it is characterized in that: the two ends of this rectangular pile are provided with rectangle end plate (1), the two ends plate connects by reinforcing cage (2), and the two ends plate is filled with the concrete that wraps reinforcing cage (2) between (1), forms the concrete rectangular pile.

2. centrifugal concrete rectangular pile according to claim 1, it is characterized in that: the central authorities of described rectangle end plate (1) and pile body are equipped with isometrical concentrically ringed endoporus (4).

3. according to the described centrifugal concrete rectangular pile of claim l, it is characterized in that: the thickness of described rectangle end plate (1) is 12～27mm, along bolt hole and the towing pad of a plurality of mutual UNICOMs of rectangle end plate even distribution all around, the aperture of bolt hole is greater than the aperture of towing pad.

4. centrifugal concrete rectangular pile according to claim 1, it is characterized in that: the used main muscle of described reinforcing cage is prestressed reinforcement or plain bars.

5. centrifugal concrete rectangular pile according to claim 1 is characterized in that: centrifugal concrete rectangular pile external surface is shiny surface or textured.

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