CN202767066U - High-performance partially prestressed concrete square pile - Google Patents
High-performance partially prestressed concrete square pile Download PDFInfo
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- CN202767066U CN202767066U CN 201220394534 CN201220394534U CN202767066U CN 202767066 U CN202767066 U CN 202767066U CN 201220394534 CN201220394534 CN 201220394534 CN 201220394534 U CN201220394534 U CN 201220394534U CN 202767066 U CN202767066 U CN 202767066U
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Abstract
The utility model discloses a high-performance partially prestressed concrete square pile. The high-performance partially prestressed concrete square pile comprises a steel reinforcement cage and concrete, wherein the concrete is distributed along the steel reinforcement cage to form a pile body of the square pile. The steel reinforcement cage is composed of a plurality of main reinforcements and hoopings, wherein the hoopings are welded on the main reinforcements. The cross section of the pile body of the concrete square pile is square, the number of the main reinforcements in the steel reinforcement cage is 8-24, the 8-24 main reinforcements include 4-12 prestressed main reinforcements and 4-12 non-prestressed main reinforcements, and the prestressed main reinforcements and the non-prestressed main reinforcements are connected through the hoopings to form the steel reinforcement cage. According to the high-performance partially prestressed concrete square pile, the number of the longitudinal main reinforcements is 8-24, and the longitudinal main reinforcements are respectively located on corners and sides of the square, wherein the prestressed main reinforcements alternate with the non-prestressed main reinforcements in sequence, and the prestressed main reinforcements and the non-prestressed main reinforcements are evenly distributed and located on the centers of the four corners and the centers of the four sides. Common advantages of the prestressed components and the non-prestressed components are combined, and thus the high-performance partially prestressed concrete square pile is suitable for engineering application.
Description
Technical field
The utility model relates to the improvement of foundation pile shape and structure in the building field, is specifically related to a kind of high-performance partially prestressed concrete square pile.
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 piling and prestressed member piling, non-prestressed member piling mainly comprises traditional square pile, tube-sinking cast-in-situ pile etc., shortcoming is that bearing capacity of single pile is relatively low, bending resistance (drawing), shear behavior are poor, long construction period, pile quality does not meet designing requirement; The prestressed member piling comprises, pile tube, centrifugal prestress square pile etc., shortcoming is, often fragility is larger, shorter from the cracking to the time to rupture, pile body ductility is relatively poor, causes the moment building collapsing when earthquake occurs, make the interior personnel of building not have the sufficient time escape, this problem is particularly outstanding in many shakes areas such as Japan, Taiwan, China.
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.
But, circular cross-section relatively and section ratio surface area less, therefore pile tube does not take advantage aspect the stake side-friction force improving; Hollow square pile and soil body frictional force are larger, and the bearing capacity ratio pile tube is good, although boring can be saved concrete material, hollow square pile and pile tube sectional area are less, and shear resistance is not enough.
In the recent period, special-shaped 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.
The utility model content
For problems such as the existing fragility of above-mentioned existing concrete prefabricated units are large, pile body ductility is poor, the utility model provides a kind of partially prestressed concrete square pile, and it can effectively solve the problem of existing concrete prefabricated units.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of high-performance partially prestressed concrete square pile, comprise reinforcing cage and concrete, described concrete distributes along reinforcing cage and forms the pile body of square pile, described reinforcing cage is comprised of some main muscle and the stirrup that is welded on the main muscle, the cross section of described concrete square pile pile body is square, main muscle is 8～24 in the described reinforcing cage, comprises the non-prestressed main muscle of 4-12 root prestressing force master's muscle and 4-12 root, is connected to form reinforcing cage by stirrup between prestressing force master muscle and the non-prestressed main muscle.
Further, successively alternate and even distribution between described non-prestressed main muscle and the prestressing force master muscle.
Further, the distribution that is square of the main muscle plane in the described reinforcing cage, described main muscle lay respectively on the square angle and the limit on.
Further, the cross section of described concrete square pile pile body is square, and its length of side is 300mm, 325mm, 350mm, 375mm, 400mm, 425mm, 450mm, 475mm or 500mm.
Further, the cross section of described concrete square pile pile body is rectangle, and its length of side is any combination among 300mm, 325mm, 350mm, 375mm, 400mm, 425mm, 450mm, 475mm, the 500mm.
Further, described prestressing force master muscle is the PC rod iron, and its diameter is 7.1mm, 9.1mm, 10.7mm or 12.6mm.
Further, described non-prestressed main muscle is HRB335, HRB400 or HRB500 screw-thread steel, and its diameter is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm or 30mm.
Further, the cross section of described pile body is rounded square, and its radius of corner is 5-30mm.
Further, the zone apart from two ends 1000-2000mm on the described pile body is hoop reinforcement, and the stirrup spacing that is positioned at this zone is 40-70mm, and the stirrup spacing in all the other zones is 60-100mm.
Further, described concrete forms the reinforcing bar external protection in the reinforcing cage outside, and the thickness of described reinforcing bar external protection is 40-55mm.
Lengthways main steel bar is 8～24 in the utility model, lay respectively on the square angle and the limit on, evenly distribute between wherein non-prestressing tendon and presstressed reinforcing steel are thought successively and be positioned at square four jiaos and center, four limits, in conjunction with the common advantage of prestressing force and non-prestressed member, be more suitable for engineering and use.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the utility model elevation;
Fig. 2 is the utility model sectional view;
Fig. 3 is the utility model top view.
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.
Referring to Fig. 1, the concrete square pile 100 that the utility model provides mainly is made of reinforcing cage 101 and concrete 102, and wherein concrete 102 distributes along reinforcing cage 101 and consists of thus the pile body 100 of concrete square pile.
Referring to Fig. 2 and Fig. 3, the cross section of concrete square pile pile body 100 is solid rounded square, and it is identical in whole y direction cross section geometry.
Its radius of corner of rounded square is 5-30mm.
It is square pile body design that the utility model adopts cross section, so that the sectional area of pile body is larger, can effectively improve the pile body shear resistance.
Moreover during the cross section that pile body is square designed, its corner was stress and eliminates circular arc, so that corner is easy to moulding in the pile body moulding, can effectively improve the pile rate; Simultaneously the corner is stress and eliminates circular arc, also so that can effectively eliminate stress concentratedly in the pile foundation construction process, can effectively improve construction pile rate.
In implementation, the shape of cross section of concrete square pile pile body 100 can be designed to square or rectangular according to the actual requirements.
If the cross section of concrete square pile pile body is square, its length of side can adopt 300mm, 325mm, 350mm, 375mm, 400mm, 425mm, 450mm, 475mm or 500mm.
If the cross section of concrete square pile pile body is rectangle, its length of side can adopt any combination among 300mm, 325mm, 350mm, 375mm, 400mm, 425mm, 450mm, 475mm, the 500mm.
Referring to Fig. 1 and Fig. 2, reinforcing cage 101 mainly is comprised of some lengthways main steel bar 101a, 101b and the stirrup 101c that is welded on the main muscle.
In the utility model, lengthways main steel bar amounts to 8～24, distributions that be square in the plane of these lengthways main steel bars, lengthways main steel bar respectively even distance be positioned on the square angle with the limit on, form the skeleton of reinforcing cage 101 with this.
In order to match with pile body 100 cross sectional shapes, lengthways main steel bar can adopt square and rectangular profile.
In order to improve pile body fragility, improve pile body ductility, improve pile body antidetonation, distortion and mechanical property, comprise the non-prestressed main muscle 101b of 4-12 root prestressing force master muscle 101a and 4-12 root in these 8～24 lengthways main steel bars, the distribution that is square in the plane, and connect by stirrup 101c between prestressing force master muscle 101a and the non-prestressed main muscle 101b.Wherein stirrup 101c is along continuous in the shape of a spiral being welded on prestressing force master muscle 101a and the non-prestressed main muscle 101b of the length direction of main muscle, and forming cross section is square reinforcing cage 101.
For the performance that makes pile body reaches best, when the formation cross section is square reinforcing cage 101, prestressing force master muscle 101a and non-prestressed main muscle 101b are distributed in square four jiaos and center, four limits, and between them successively alternate and even distribution form reinforcement cage skeleton, and link together by stirrup.
As from the foregoing, the main muscle distribution that is square in the utility model, it is rationally distributed, reinforcing cage is welded by stirrup in the shape of a spiral so that the final square pile pile body ductility that forms good, become that pile capacity is large, bending resistance, shear behavior is good, shock resistance is strong.
Moreover, main muscle comprises prestressing force master muscle 101a and non-prestressed main muscle 101b, and prestressing force master muscle 101a is positioned at square four jiaos and center, four limits, and non-prestressing tendon 101b evenly is interspersed between prestressed reinforcement, in conjunction with the common advantage of prestressing force and non-prestressed member, be more suitable for engineering and use.
Based on such scheme in the specific implementation, prestressing force master muscle can be the PC rod iron, and its diameter is 7.1mm, 9.1mm, 10.7mm or 12.6mm.
Non-prestressed main muscle can be HRB335, HRB400 or HRB500 screw-thread steel, and its diameter is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm or 30mm.
Stirrup 101c encrypted area is set at the two ends of pile body as required, the concrete zone at distance pile body two ends 1000-2000mm is stirrup 101c encrypted area, the stirrup 101c spacing that is positioned at this zone is 40-70mm, and the stirrup 101c spacing in all the other zones is 60-100mm.
Moreover; as shown in Figure 2; when forming pile body 100; concrete 102 forms reinforcing bar external protection 102a in reinforcing cage 101 outsides; the thickness of this reinforcing bar external protection is 40-55mm; its than before the prestressed concrete member protective layer thickness strengthened, the anticorrosion that can be inner reinforcing bar provides better guarantee, thereby improves the pile body durability.
Above demonstration and described basic principle of the present utility model, 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 (10)
1. high-performance partially prestressed concrete square pile, comprise reinforcing cage and concrete, described concrete distributes along reinforcing cage and forms the pile body of square pile, described reinforcing cage is comprised of some main muscle and the stirrup that is welded on the main muscle, it is characterized in that, the cross section of described high-performance partially prestressed concrete square pile pile body is square, main muscle is 8～24 in the described reinforcing cage, comprise the non-prestressed main muscle of 4-12 root prestressing force master's muscle and 4-12 root, be connected to form reinforcing cage by stirrup between prestressing force master muscle and the non-prestressed main muscle.
2. a kind of high-performance partially prestressed concrete square pile according to claim 1 is characterized in that, successively alternate and even distribution between described non-prestressed main muscle and the prestressing force master muscle.
3. a kind of high-performance partially prestressed concrete square pile according to claim 1 is characterized in that, the distribution that is square of the main muscle plane in the described reinforcing cage, described main muscle lay respectively on the square angle and the limit on.
4. a kind of high-performance partially prestressed concrete square pile according to claim 1, it is characterized in that, the cross section of described concrete square pile pile body is square, and its length of side is 300mm, 325mm, 350mm, 375mm, 400mm, 425mm, 450mm, 475mm or 500mm.
5. a kind of high-performance partially prestressed concrete square pile according to claim 1, it is characterized in that, the cross section of described concrete square pile pile body is rectangle, and its length of side is any combination among 300mm, 325mm, 350mm, 375mm, 400mm, 425mm, 450mm, 475mm, the 500mm.
6. each described a kind of high-performance partially prestressed concrete square pile in 3 according to claim 1 is characterized in that, described prestressing force master muscle is the PC rod iron, and its diameter is 7.1mm, 9.1mm, 10.7mm or 12.6mm.
7. each described a kind of high-performance partially prestressed concrete square pile in 3 according to claim 1, it is characterized in that, described non-prestressed main muscle is HRB335, HRB400 or HRB500 screw-thread steel, and its diameter is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm or 30mm.
8. a kind of high-performance partially prestressed concrete square pile according to claim 1 is characterized in that, the cross section of described pile body is rounded square, and its radius of corner is 5-30mm.
9. a kind of high-performance partially prestressed concrete square pile according to claim 1, it is characterized in that, zone apart from two ends 1000-2000mm on the described pile body is hoop reinforcement, and the stirrup spacing that is positioned at this zone is 40-70mm, and the stirrup spacing in all the other zones is 60-100mm.
10. a kind of high-performance partially prestressed concrete square pile according to claim 1 is characterized in that, described concrete forms the reinforcing bar external protection in the reinforcing cage outside, and the thickness of described reinforcing bar external protection is 40-55mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220394534 CN202767066U (en) | 2012-08-09 | 2012-08-09 | High-performance partially prestressed concrete square pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220394534 CN202767066U (en) | 2012-08-09 | 2012-08-09 | High-performance partially prestressed concrete square pile |
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| CN202767066U true CN202767066U (en) | 2013-03-06 |
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| CN 201220394534 Expired - Fee Related CN202767066U (en) | 2012-08-09 | 2012-08-09 | High-performance partially prestressed concrete square pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013209A (en) * | 2016-06-13 | 2016-10-12 | 中国电力科学研究院 | Rib frame and pile foundation |
-
2012
- 2012-08-09 CN CN 201220394534 patent/CN202767066U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013209A (en) * | 2016-06-13 | 2016-10-12 | 中国电力科学研究院 | Rib frame and pile foundation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20180809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |