CN103572754A - Partial prestressed concrete hexagonal hollow pile - Google Patents
Partial prestressed concrete hexagonal hollow pile Download PDFInfo
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- CN103572754A CN103572754A CN201210282793.1A CN201210282793A CN103572754A CN 103572754 A CN103572754 A CN 103572754A CN 201210282793 A CN201210282793 A CN 201210282793A CN 103572754 A CN103572754 A CN 103572754A
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- prestressed concrete
- partially prestressed
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Abstract
The invention relates to a partial prestressed concrete hexagonal hollow pile; a central through hole penetrating through the whole partial prestressed concrete hexagonal hollow pile is formed in the longitudinal axis direction of the partial prestressed concrete hexagonal hollow pile; the cross section of the inner periphery of the partial prestressed concrete hexagonal hollow pile is round; the cross section of the outer periphery of the partial prestressed concrete hexagonal hollow pile is regularly hexagonal; the geological dimensions of the cross sections of the inner periphery and the outer periphery of the partial prestressed concrete hexagonal hollow pile are same in the whole longitudinal axis direction; the partial prestressed concrete hexagonal hollow pile comprises main ribs extending along the length direction of a hollow square pile and hoop ribs spirally surrounding the main ribs; the main ribs comprise prestressed ribs and non-prestressed ribs; concrete protection layers are arranged inside and outside the hoop ribs; the outsides of the main ribs are connected by the hoop ribs through fixing, roll-welding or binding; the prestressed ribs and the non-prestressed ribs are all positioned at the angles and the edges of regular hexagons defined by the hoop ribs.
Description
Technical field
The invention belongs to building field, relate to the improvement of foundation pile shape and structure in building field, is the stake of a kind of partially prestressed concrete hexagon hollow 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 are mainly divided into non-prestressed member and the large class of prestressed member two.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.Prestressed member piling comprises, pile tube, centrifugal prestress square pile etc.Their shortcoming is, often fragility is larger, and shorter to time to rupture from there is cracking, pile body ductility is poor, when there is earthquake, causes moment building collapsing, makes personnel in building there is no sufficient time escape.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 market is square and circular cross-section, and when as carrying effect member, its maximum object is to improve the pile body bearing capacity that unit materials can provide, thereby saves material, reduces costs.The very large feature of preformed pile is a side and soil interaction, utilizes the frictional force between stake and soil to improve pile body bearing capacity.
Circular cross-section is relative and section ratio surface area is relatively little, therefore do not take advantage at pile tube aspect raising stake side-friction force; Hollow square pile and soil body frictional force are larger, and bearing capacity ratio pile tube is good, and boring can be saved concrete material, but hollow square pile and pile tube sectional area are less, and 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 meet the engineering demand of 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, from the partially prestressed concrete hexagon hollow stake of heavy and light.
The present invention solves above-mentioned technical problem by following technical proposals: partially prestressed concrete hexagon hollow stake y direction is provided with the central through hole that runs through the stake of whole partially prestressed concrete hexagon hollow, interior all cross sections of described partially prestressed concrete hexagon hollow stake are circular, the periphery cross section of described partially prestressed concrete hexagon hollow stake is that periphery is regular hexagon, the stake of described partially prestressed concrete hexagon hollow is identical in the interior periphery cross section geometry of whole y direction, the stake of described partially prestressed concrete hexagon hollow comprises that the main muscle that extends along hollow square pile length direction and spiral are around the stirrup of described main muscle, described main muscle comprises presstressed reinforcing steel and non-prestressing tendon, inside and outside stirrup, all there is concrete cover, by stirrup, fixedly roll welding or colligation connect in main muscle outside, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the Shang He limit, orthohexagonal angle being surrounded by stirrup.
In specific embodiments of the invention, described orthohexagonal side size range is 200mm-550mm.
In specific embodiments of the 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 specific embodiments of the 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 hexagon hollow stake and muscle form or adopt two not identical muscle and be placed in the non-of hexagon hollow stake muscle form together.
In specific embodiments of the invention, the cross section of described partially prestressed concrete hexagon hollow stake is fillet regular hexagon, and fillet can be 1～6, and radius of corner value is 10-30mm.
In specific embodiments of the invention, described partially prestressed concrete hexagon hollow stake 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 specific embodiments of the invention, the outer concrete protective layer thickness of described partially prestressed concrete hexagon hollow pile ring muscle is 40-55mm.
Positive progressive effect of the present invention is: partially prestressed concrete hexagon hollow provided by the invention stake has the following advantages:
(1). the feature of maximum of the present invention is that lengthways main steel bar is the combination of presstressed reinforcing steel and non-prestressing tendon, 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 member, be more suitable for engineering application.
(2). partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is fillet regular hexagon, and interior week is circular, and sectional area is larger, can effectively improve pile body shear resistance.
(3). partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is fillet hexagon, and interior week is circular, and its corner is stress and eliminates circular arc, so the present invention's corner in pile body moulding is easy to moulding, can effectively improve pile rate.
(4). partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is fillet regular hexagon, and interior week is circular, and its corner is stress and eliminates circular arc, so it is concentrated that the present invention can effectively eliminate stress in pile foundation construction process, can effectively improve construction pile rate.
(5). partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is hexagon, and interior week is circular, and its corner is stress and eliminates circular arc; Main muscle is hexagon and distributes, 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 hexagon hollow provided by the invention stake, its cross-sectional circumference is hexagon, and interior week is circular, and its corner is stress and eliminates circular arc; Main muscle is hexagonal arrangement, from structure, the main muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral stirrup to be welded, because having increased main muscle quantity, make the present invention with respect to like product before, become that pile capacity is large, bending resistance shear behavior is good, shock resistance is strong.
(7). partially prestressed concrete hexagon hollow provided by the invention stake; 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, thereby improves pile body durability.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is sectional view of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, to describe technical scheme of the present invention in detail.
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 hexagon hollow stake y direction is provided with the central through hole that runs through the stake of whole partially prestressed concrete hexagon hollow, interior all cross sections of partially prestressed concrete hexagon hollow stake are circular, the periphery cross section of described partially prestressed concrete hexagon hollow stake is that periphery is regular hexagon, the stake of described partially prestressed concrete hexagon hollow is identical in the interior periphery cross section geometry of whole y direction, the stake of described partially prestressed concrete hexagon hollow comprises that the main muscle that extends along hollow square pile length direction and spiral are around the stirrup 3 of described main muscle, described main muscle comprises presstressed reinforcing steel 1 and non-prestressing tendon 1 ', inside and outside stirrup, all there are concrete 2 toppings, by stirrup 3, fixedly roll welding or colligation connect in main muscle outside, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the Shang He limit, orthohexagonal angle being surrounded by stirrup.Orthohexagonal side size range is 200mm-550mm.Non-prestressing tendon 1 ' adopts HRB335, HRB400 or HRB500 indented bars, and concrete model is
presstressed reinforcing steel 1 outside concrete 2 protective layer thickness>=40mm, 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 hexagon hollow stake and muscle form or adopt two not identical muscle and be placed in the non-of hexagon hollow stake muscle form together.The cross section of described partially prestressed concrete hexagon hollow stake is fillet regular hexagon, and fillet can be 1～6, and radius of corner value is 10-30mm.Described partially prestressed concrete hexagon hollow stake 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 hexagon hollow pile ring muscle is 40-55mm.
The feature of maximum of the present invention is that lengthways main steel bar is the combination of presstressed reinforcing steel and non-prestressing tendon, 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 member, be more suitable for engineering application.
Partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is fillet regular hexagon, and interior week is circular, and sectional area is larger, can effectively improve pile body shear resistance.
Partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is fillet hexagon, and interior week is circular, and its corner is stress and eliminates circular arc, so the present invention's corner in pile body moulding is easy to moulding, can effectively improve pile rate.
Partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is fillet regular hexagon, and interior week is circular, and its corner is stress and eliminates circular arc, so it is concentrated that the present invention can effectively eliminate stress in pile foundation construction process, can effectively improve construction pile rate.
Partially prestressed concrete hexagon hollow provided by the invention stake, its cross-sectional circumference is hexagon, and interior week is circular, and its corner is stress and eliminates circular arc; Main muscle is hexagon and distributes, 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 hexagon hollow provided by the invention stake, its cross-sectional circumference is hexagon, and interior week is circular, and its corner is stress and eliminates circular arc; Main muscle is hexagonal arrangement, from structure, the main muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral stirrup to be welded, because having increased main muscle quantity, make the present invention with respect to like product before, become that pile capacity is large, bending resistance shear behavior is good, shock resistance is strong.
Partially prestressed concrete hexagon hollow provided by the invention stake; 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, thereby improves pile body durability.
More than show and described basic 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; that in above-described embodiment and manual, describes 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 the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (7)
1. partially prestressed concrete hexagon hollow stake, it is characterized in that: described partially prestressed concrete hexagon hollow stake y direction is provided with the central through hole that runs through the stake of whole partially prestressed concrete hexagon hollow, interior all cross sections of described partially prestressed concrete hexagon hollow stake are circular, the periphery cross section of described partially prestressed concrete hexagon hollow stake is that periphery is regular hexagon, the stake of described partially prestressed concrete hexagon hollow is identical in the interior periphery cross section geometry of whole y direction, the stake of described partially prestressed concrete hexagon hollow comprises that the main muscle that extends along hollow square pile length direction and spiral are around the stirrup of described main muscle, described main muscle comprises presstressed reinforcing steel and non-prestressing tendon, inside and outside stirrup, all there is concrete cover, by stirrup, fixedly roll welding or colligation connect in main muscle outside, presstressed reinforcing steel and non-prestressing tendon all can be positioned on the Shang He limit, orthohexagonal angle being surrounded by stirrup.
2. partially prestressed concrete hexagon hollow according to claim 1 stake, is characterized in that: described orthohexagonal side size range is 200mm-550mm.
3. partially prestressed concrete hexagon hollow according to claim 1 stake, is characterized in that: 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.
4. partially prestressed concrete hexagon hollow according to claim 1 stake, is characterized in that: 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 hexagon hollow stake and muscle form or adopt two not identical muscle and be placed in the non-of hexagon hollow stake muscle form together.
5. partially prestressed concrete hexagon hollow according to claim 1 stake, is characterized in that: the cross section of described partially prestressed concrete hexagon hollow stake is fillet regular hexagon, and fillet can be 1～6, and radius of corner value is 10-30mm.
6. partially prestressed concrete hexagon hollow according to claim 1 stake, it is characterized in that: described partially prestressed concrete hexagon hollow stake stake end 1000-2000mm is hoop reinforcement, stirrup spacing is 40-70mm, and except encrypted area, two ends, the stirrup spacing of remainder is 60-100mm.
7. partially prestressed concrete hexagon hollow according to claim 1 stake, is characterized in that: the outer concrete protective layer thickness of described partially prestressed concrete hexagon hollow pile ring muscle 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103572754A true CN103572754A (en) | 2014-02-12 |
| CN103572754B CN103572754B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0193160A (en) * | 1987-10-05 | 1989-04-12 | Nec Corp | Semiconductor device |
| 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 |
-
2012
- 2012-08-09 CN CN201210282793.1A patent/CN103572754B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0193160A (en) * | 1987-10-05 | 1989-04-12 | Nec Corp | Semiconductor device |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国建设部: "《混凝土结构设计规范（GB50010-2002)》", 1 April 2002, 中国建筑工业出版社 * |
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| CN103572754B (en) | 2016-03-30 |
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