CN103572754B - A kind of partially prestressed concrete hexagonal hollow pile - Google Patents
A kind of partially prestressed concrete hexagonal hollow pile Download PDFInfo
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- CN103572754B CN103572754B CN201210282793.1A CN201210282793A CN103572754B CN 103572754 B CN103572754 B CN 103572754B CN 201210282793 A CN201210282793 A CN 201210282793A CN 103572754 B CN103572754 B CN 103572754B
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- prestressed concrete
- hollow pile
- hexagonal hollow
- partially prestressed
- pile
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Abstract
The present invention relates to a kind of partially prestressed concrete hexagonal hollow pile, described partially prestressed concrete hexagonal hollow pile y direction is provided with the central through hole running through whole partially prestressed concrete hexagonal hollow pile, the inner circumferential cross section of described partially prestressed concrete hexagonal hollow pile is circular, the periphery cross section of described partially prestressed concrete hexagonal hollow pile is periphery is regular hexagon, described partially prestressed concrete hexagonal hollow pile periphery cross section geometry in whole y direction is identical, described partially prestressed concrete hexagonal hollow pile comprises the main muscle and spiral that extend along hollow square pile length direction around the stirrup of described main muscle, described main muscle comprises presstressed reinforcing steel and non-prestressing tendon, all concrete cover is had inside and outside stirrup, roll welding or colligation connection is fixed by stirrup outside main muscle, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the orthohexagonal angle that surrounded by stirrup and on limit.
Description
Technical field
The invention belongs to building field, relate to the improvement of foundation pile shape and structure in building field, is a kind of partially prestressed concrete hexagonal hollow pile specifically.
Background technology
The building materials of foundation pile engineering are commercially more, if any pile tube, all kinds of square pile, castinplace pile, drilled pile etc.These pilings are mainly divided into non-prestressed component and the large class of prestressed member two.Non-prestressed component 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, and long construction period, pile quality does not meet designing requirement.Prestressed member piling comprises, pile tube, centrifugal prestress square pile etc.Their shortcoming is, often fragility is comparatively large, and shorter to time to rupture from generation cracking, pile body ductility is poor, causing moment building collapsing, making personnel in building not have the sufficient time to escape when there is earthquake.This problem is particularly outstanding in many shakes area such as Japan, Taiwan, China.Before, most of prefabricated piling mostly is non-prestressed or prestressing force, and above-mentioned shortcoming is difficult to avoid.
Existing concrete prefabricated units cross section is various, and many on market is square and circular cross-section, and when as carrying reaction members, its maximum object is to improve the pile body bearing capacity that unit materials can provide, thus saving material, reduce costs.The very large feature of preformed pile is a side and soil interaction, utilizes the frictional force between oil and pile to improve pile body bearing capacity.
Circular cross-section is relative and section ratio surface area is relatively little, therefore pile tube does not take advantage in raising frictional force in side-pile; Hollow square pile and soil body frictional force are comparatively large, and bearing capacity ratio pile tube is good, and boring can save concrete material, but hollow square pile and pile tube sectional area less, shear resistance is not enough.
In the recent period, also occur special-shaped triangular pile, but reinforcement ratio is lower, pile body globality, shearing resistance bending resistance tensile property are difficult to the engineering demand meeting high requirement.
Summary of the invention
For the problems referred to above, main purpose of the present invention is to provide that loss in a kind of building is few, material-saving, partially prestressed concrete hexagonal hollow pile from heavy and light.
The present invention solves above-mentioned technical problem by following technical proposals: partially prestressed concrete hexagonal hollow pile y direction is provided with the central through hole running through whole partially prestressed concrete hexagonal hollow pile, the inner circumferential cross section of described partially prestressed concrete hexagonal hollow pile is circular, the periphery cross section of described partially prestressed concrete hexagonal hollow pile is periphery is regular hexagon, described partially prestressed concrete hexagonal hollow pile periphery cross section geometry in whole y direction is identical, described partially prestressed concrete hexagonal hollow pile comprises the main muscle and spiral that extend along hollow square pile length direction around the stirrup of described main muscle, described main muscle comprises presstressed reinforcing steel and non-prestressing tendon, all concrete cover is had inside and outside stirrup, roll welding or colligation connection is fixed by stirrup outside main muscle, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the orthohexagonal angle that surrounded by stirrup and on limit.
In a particular embodiment of the present invention, described orthohexagonal side size range is 200mm-550mm.
In a particular embodiment of the present invention, described non-prestressing tendon adopts HRB335, HRB400 or HRB500 indented bars, and concrete model is
thickness of concrete cover>=40mm outside presstressed reinforcing steel, inner side thickness of concrete cover>=35mm.
In a particular embodiment of the present invention, described presstressed reinforcing steel is rod iron, and its diameter is 7.1mm, 9.0mm, 10.7mm or 12.6mm; Nonprestressed reinforcement diameter is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm or 30mm; Presstressed reinforcing steel and non-prestressing tendon all can adopt two identical muscle and together be placed in hexagonal hollow pile and muscle form or adopt two not identical muscle and be placed in the non-of hexagonal hollow pile and muscle form together.
In a particular embodiment of the present invention, the cross section of described partially prestressed concrete hexagonal hollow pile is fillet regular hexagon, and fillet can be 1 ~ 6, and radius of corner value is 10-30mm.
In a particular embodiment of the present invention, described partially prestressed concrete hexagonal hollow pile stake end 1000-2000mm is hoop reinforcement, and stirrup spacing is 40-70mm, and except encrypted area, two ends, the stirrup spacing of remainder is 60-100mm.
In a particular embodiment of the present invention, the outer concrete protective layer thickness of described partially prestressed concrete hexagonal hollow pile stirrup is 40-55mm.
Positive progressive effect of the present invention is: partially prestressed concrete hexagonal hollow pile provided by the invention has the following advantages:
(1). the maximum feature of the present invention is that lengthways main steel bar is presstressed reinforcing steel and non-prestressing tendon combination, and non-prestressing tendon is fixedly connected with by stirrup with presstressed reinforcing steel, is distributed on the hexagon arm of angle that stirrup surrounds.In conjunction with the common advantage of prestressing force and non-prestressed component, be more suitable for engineer applied.
(2). partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is fillet regular hexagon, and inner circumferential is circular, and sectional area is comparatively large, can effectively improve pile body shear resistance.
(3). partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is fillet hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc, so the present invention is easy to shaping at the shaping middle corner of pile body, can effectively improve pile rate.
(4). partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is fillet regular hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc, so the present invention can effectively eliminate stress concentrated in pile foundation construction process, construction pile rate effectively can be improved.
(5). partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc; Main muscle is hexagon distribution, from structure, the main muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral stirrup to be welded, make production pile ductility good, become that pile capacity is large, bending resistance shear behavior is good, shock resistance is strong.
(6). partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc; Main muscle is hexagonal arrangement, from structure, the main muscle of the present invention is rationally distributed, stirrup is to be welded in the shape of a spiral for reinforcing cage, and because adding main muscle quantity, the present invention is become relative to like product before, and pile capacity is large, bending resistance shear behavior is good, shock resistance is strong.
(7). partially prestressed concrete hexagonal hollow pile provided by the invention; reinforcing bar external protection thickness is 40-55mm; than before prestressed concrete member protective layer thickness strengthened, the anticorrosion that can be inner reinforcing bar provides better guarantee, thus improves pile body durability.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is sectional view of the present invention.
Detailed description of the invention
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is stereogram of the present invention, and Fig. 2 is sectional view of the present invention.As illustrated in fig. 1 and 2: partially prestressed concrete hexagonal hollow pile y direction is provided with the central through hole running through whole partially prestressed concrete hexagonal hollow pile, the inner circumferential cross section of partially prestressed concrete hexagonal hollow pile is circular, the periphery cross section of described partially prestressed concrete hexagonal hollow pile is periphery is regular hexagon, described partially prestressed concrete hexagonal hollow pile periphery cross section geometry in whole y direction is identical, described partially prestressed concrete hexagonal hollow pile comprises the main muscle and spiral that extend along hollow square pile length direction around the stirrup 3 of described main muscle, described main muscle comprises presstressed reinforcing steel 1 and non-prestressing tendon 1 ', concrete 2 topping is all had inside and outside stirrup, roll welding or colligation connection is fixed by stirrup 3 outside main muscle, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the orthohexagonal angle that surrounded by stirrup and on limit.Orthohexagonal side size range is 200mm-550mm.Non-prestressing tendon 1 ' adopts HRB335, HRB400 or HRB500 indented bars, and concrete model is
concrete 2 protective layer thickness>=40mm outside presstressed reinforcing steel 1, inner side concrete 2 protective layer thickness>=35mm.Presstressed reinforcing steel 1 is rod iron, and its diameter is 7.1mm, 9.0mm, 10.7mm or 12.6mm; Nonprestressed reinforcement 1 ' diameter is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm or 30mm; Presstressed reinforcing steel 1 and non-prestressing tendon 1 ' all can adopt two identical muscle and together be placed in hexagonal hollow pile and muscle form or adopt two not identical muscle and be placed in the non-of hexagonal hollow pile and muscle form together.The cross section of described partially prestressed concrete hexagonal hollow pile is fillet regular hexagon, and fillet can be 1 ~ 6, and radius of corner value is 10-30mm.Described partially prestressed concrete hexagonal hollow pile stake end 1000-2000mm is hoop reinforcement, and stirrup spacing is 40-70mm, and except encrypted area, two ends, the stirrup spacing of remainder is 60-100mm.The outer concrete protective layer thickness of partially prestressed concrete hexagonal hollow pile stirrup is 40-55mm.
The maximum feature of the present invention is that lengthways main steel bar is presstressed reinforcing steel and non-prestressing tendon combination, and non-prestressing tendon is fixedly connected with by stirrup with presstressed reinforcing steel, is distributed on the hexagon arm of angle that stirrup surrounds.In conjunction with the common advantage of prestressing force and non-prestressed component, be more suitable for engineer applied.
Partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is fillet regular hexagon, and inner circumferential is circular, and sectional area is comparatively large, can effectively improve pile body shear resistance.
Partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is fillet hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc, so the present invention is easy to shaping at the shaping middle corner of pile body, can effectively improve pile rate.
Partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is fillet regular hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc, so the present invention can effectively eliminate stress concentrated in pile foundation construction process, construction pile rate effectively can be improved.
Partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc; Main muscle is hexagon distribution, from structure, the main muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral stirrup to be welded, make production pile ductility good, become that pile capacity is large, bending resistance shear behavior is good, shock resistance is strong.
Partially prestressed concrete hexagonal hollow pile provided by the invention, its cross-sectional circumference is hexagon, and inner circumferential is circular, and its corner is stress elimination circular arc; Main muscle is hexagonal arrangement, from structure, the main muscle of the present invention is rationally distributed, stirrup is to be welded in the shape of a spiral for reinforcing cage, and because adding main muscle quantity, the present invention is become relative to like product before, and pile capacity is large, bending resistance shear behavior is good, shock resistance is strong.
Partially prestressed concrete hexagonal hollow pile provided by the invention; reinforcing bar external protection thickness is 40-55mm; than before prestressed concrete member protective layer thickness strengthened, the anticorrosion that can be inner reinforcing bar provides better guarantee, thus improves pile body durability.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a partially prestressed concrete hexagonal hollow pile, it is characterized in that: described partially prestressed concrete hexagonal hollow pile y direction is provided with the central through hole running through whole partially prestressed concrete hexagonal hollow pile, the inner circumferential cross section of described partially prestressed concrete hexagonal hollow pile is circular, the periphery cross section of described partially prestressed concrete hexagonal hollow pile is periphery is regular hexagon, described partially prestressed concrete hexagonal hollow pile periphery cross section geometry in whole y direction is identical, described partially prestressed concrete hexagonal hollow pile comprises the main muscle and spiral that extend along hollow square pile length direction around the stirrup of described main muscle, described main muscle comprises presstressed reinforcing steel and non-prestressing tendon, all concrete cover is had inside and outside stirrup, roll welding or colligation connection is fixed by stirrup outside main muscle, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the orthohexagonal angle that surrounded by stirrup and on limit,
Described non-prestressing tendon adopts HRB335, HRB400 or HRB500 indented bars, and concrete model is
thickness of concrete cover>=40mm outside presstressed reinforcing steel, inner side thickness of concrete cover>=35mm;
Described presstressed reinforcing steel is rod iron, and its diameter is 7.1mm, 9.0mm, 10.7mm or 12.6mm; Nonprestressed reinforcement diameter is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm or 30mm;
Presstressed reinforcing steel and non-prestressing tendon all can adopt two identical muscle and together be placed in hexagonal hollow pile and muscle form or adopt two not identical muscle and be placed in the non-of hexagonal hollow pile and muscle form together;
The cross section of described partially prestressed concrete hexagonal hollow pile is fillet regular hexagon, and fillet is 1 ~ 6, and radius of corner value is 10-30mm;
Described partially prestressed concrete hexagonal hollow pile stake end 1000-2000mm is hoop reinforcement, and stirrup spacing is 40-70mm, and except encrypted area, two ends, the stirrup spacing of remainder is 60-100mm;
Stress rib and non-prestressing tendon are spaced.
2. partially prestressed concrete hexagonal hollow pile according to claim 1, is characterized in that: described orthohexagonal side size range is 200mm-550mm.
3. partially prestressed concrete hexagonal hollow pile according to claim 1, is characterized in that: the outer concrete protective layer thickness of described partially prestressed concrete hexagonal hollow pile stirrup is 40-55mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282793.1A CN103572754B (en) | 2012-08-09 | 2012-08-09 | A kind of partially prestressed concrete hexagonal hollow pile |
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|---|---|---|---|
| CN201210282793.1A CN103572754B (en) | 2012-08-09 | 2012-08-09 | A kind of partially prestressed concrete hexagonal hollow pile |
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| Publication Number | Publication Date |
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| CN103572754A CN103572754A (en) | 2014-02-12 |
| CN103572754B true CN103572754B (en) | 2016-03-30 |
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| CN201210282793.1A Expired - Fee Related CN103572754B (en) | 2012-08-09 | 2012-08-09 | A kind of partially prestressed concrete hexagonal hollow pile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005113413A (en) * | 2003-10-03 | 2005-04-28 | Maeda Seikan Kk | Shearing reinforcing structure of ready-made concrete pile |
| CN201010901Y (en) * | 2007-01-29 | 2008-01-23 | 同济大学 | Inscribed polygon prestressed steel concrete hollow square pile |
| CN201512787U (en) * | 2009-09-28 | 2010-06-23 | 河南建华管桩有限公司 | Horizontal load-bearing enhancement pre-stressed concrete centrifugal square-sectioned pile |
| CN101851916A (en) * | 2010-06-01 | 2010-10-06 | 上海中技桩业股份有限公司 | Concrete precast pile |
| CN201730091U (en) * | 2010-08-05 | 2011-02-02 | 上海中技桩业股份有限公司 | Cast-in-situ pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0193160A (en) * | 1987-10-05 | 1989-04-12 | Nec Corp | Semiconductor device |
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2012
- 2012-08-09 CN CN201210282793.1A patent/CN103572754B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005113413A (en) * | 2003-10-03 | 2005-04-28 | Maeda Seikan Kk | Shearing reinforcing structure of ready-made concrete pile |
| CN201010901Y (en) * | 2007-01-29 | 2008-01-23 | 同济大学 | Inscribed polygon prestressed steel concrete hollow square pile |
| CN201512787U (en) * | 2009-09-28 | 2010-06-23 | 河南建华管桩有限公司 | Horizontal load-bearing enhancement pre-stressed concrete centrifugal square-sectioned pile |
| CN101851916A (en) * | 2010-06-01 | 2010-10-06 | 上海中技桩业股份有限公司 | Concrete precast pile |
| CN201730091U (en) * | 2010-08-05 | 2011-02-02 | 上海中技桩业股份有限公司 | Cast-in-situ pile |
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| CN103572754A (en) | 2014-02-12 |
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Granted publication date: 20160330 Termination date: 20180809 |