CN102733382A - Post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile - Google Patents
Post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile Download PDFInfo
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- CN102733382A CN102733382A CN2012102015746A CN201210201574A CN102733382A CN 102733382 A CN102733382 A CN 102733382A CN 2012102015746 A CN2012102015746 A CN 2012102015746A CN 201210201574 A CN201210201574 A CN 201210201574A CN 102733382 A CN102733382 A CN 102733382A
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Abstract
The invention relates to a post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile. A central through hole penetrating through the whole post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile is formed in the post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile along the longitudinal direction; the inner circumferential cross section of the post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile has a triangular shape with round corners; the outer circumferential cross section of the post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile also has a triangular shape with round corners; the inner circumferential cross section geometrical sizes of the post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile in the whole longitudinal direction are the same, and the outer circumferential cross section geometrical sizes of the post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile in the whole longitudinal direction are also the same; and the triangular pile comprises three main reinforcements which extend along the length direction of the triangular pile, and hoop reinforcements which spirally surround the main reinforcements, wherein the three main reinforcements are respectively positioned at three edges of the triangular pile, and grouting pipes are pre-embedded at three round corners of the triangular pile.
Description
Technical field
The invention belongs to building field, relate to the improvement of foundation pile shape and structure in the building field, is the stake of the hollow fillet triangle of a kind of grouting behind shaft or drift lining pretensioning prestressed concrete specifically.
Background technology
The building materials of foundation pile engineering are more on market, if any pile tube, all kinds of side stake, castinplace pile, drilled pile etc.These pilings mainly are divided into non-prestressed member and prestressed member two big classes.Non-prestressed member mainly comprises traditional side's stake, 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 pile single pile bearing capacity is higher relatively, and bending resistance (drawing), shear behavior are good, short construction period, and pile quality is better, can satisfy design and engine request.
Existing concrete prefabricated units cross section is various, and many on the market is square and circular cross-section, and as carrying effect member the time, its maximum purpose is to improve the pile body bearing capacity that unit materials can provide, thereby economical with materials reduces cost.The very big characteristics of preformed pile are a side and soil phase mutual effect, utilize the frictional force between stake and the soil to improve pile body bearing capacity.
Circular cross-section is relative and the section ratio surface area is less relatively, so do not take advantage at pile tube aspect the raising stake side-friction force; Side's stake is bigger with soil body frictional force, and the bearing capacity ratio pile tube is good, but solid side stake is heavy, feed consumption is many; Hollow square pile has combined the advantage of pile tube and side's stake preferably, and outer cross section is square, and interior cross section be a circle, 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.
The existing concrete prefabricated units, after pile sinking was accomplished, pile body itself contact with the soil body and very fits, and often needed the supporting capacity of the stop time competence exertion stake of length itself, and with between be connected relatively poor.
Summary of the invention
To 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 hollow fillet triangle of the grouting behind shaft or drift lining pretensioning prestressed concrete stake of heavy and light.
The present invention solves above-mentioned technical problem through following technical proposals: the stake of the hollow fillet triangle of a kind of grouting behind shaft or drift lining pretensioning prestressed concrete; The hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake y direction is provided with the central through hole that runs through the stake of the hollow fillet triangle of whole grouting behind shaft or drift lining pretensioning prestressed concrete; Interior all cross sections of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake are the fillet triangle; The periphery cross section of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake is the fillet triangle; The stake of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete is identical in interior all cross section geometry of whole y direction; The peripheral cross-section physical dimension is also identical; Said triangle stake comprises that three main muscle extending along triangle pile length direction and spiral center on the stirrup of said main muscle; Three main muscle lay respectively on three limits of leg-of-mutton triangle stake, are embedded with Grouting Pipe on three fillets of triangle stake, and said main muscle is a prestressing force master muscle.
In specific embodiment of the present invention, said main muscle is positioned on the mid point on three limits.
Positive progressive effect of the present invention is: the stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention has the following advantages:
(1), the stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, pre-buried Grouting Pipe in the pile body forming process behind pile foundation construction, is carried out grouting process, from but the soil body fully contact with pile body.On the one hand the soil body is fully contacted with pile body, before the soil body stops, higher pile body bearing capacity is provided, simultaneously, slip casting makes the soil body obtain reinforcing, and also can increase pile body bearing capacity, strengthen simultaneously stake with between be connected.
(2), the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention stake; Its cross section is the fillet triangle; Effectively raise the specific area of material; Can make unit materials have bigger surface area, thereby the stake side-friction force of raising preformed pile is to improve bearing capacity of single pile.
(3), the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention stake; Its cross section is the fillet triangle; Its corner is stress and eliminates circular arc, so the present invention's corner in the pile body moulding is easy to moulding, can effectively improve the pile rate.
(4), the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention stake; Its cross section is the fillet triangle; Its corner is stress and eliminates circular arc, so the present invention's corner in the pile body moulding is easy to moulding, can effectively improve product pile rate.
(5), the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention stake; Its cross section is the fillet triangle; Its corner is stress and eliminates circular arc, so that the present invention can effectively eliminate stress in the pile foundation construction process is concentrated, can effectively improve construction pile rate.
(6), the stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, its cross section is the fillet triangle, its corner is stress and eliminates circular arc; Main muscle layout triangular in shape is said from structure, master's muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral the shape stirrup to be welded, make in the production pile body ductility good, become that pile capacity is big, the bending resistance shear behavior is good, shock resistance is strong.
(7), the stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, its cross section is the fillet triangle, its corner is stress and eliminates circular arc; Main muscle layout triangular in shape is said from structure, master's muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral the shape stirrup effectively raise the globality of pile body to be welded, bearing capacity of single pile is big behind the construction pile, the bending resistance shear behavior is good, shock resistance is strong.
Description of drawings
Fig. 1 is a stereogram of the present invention;
Fig. 2 is a vertical view of the present invention.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
Fig. 1 is a stereogram of the present invention; Fig. 2 is a vertical view of the present invention; As illustrated in fig. 1 and 2: the stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete according to the invention is provided with the central through hole 5 that runs through the stake of the hollow fillet triangle of whole grouting behind shaft or drift lining pretensioning prestressed concrete along y direction, concrete pre-stress pile center; Interior all cross sections of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake are the fillet triangle; The periphery cross section of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake also is the fillet triangle, and the stake of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete is identical in the interior periphery cross section geometry of whole y direction.Maximum characteristics of the present invention are Grouting Pipe 1 is embedded in the stake of grouting behind shaft or drift lining concrete pre-stress hollow fillet triangle;, the pile foundation piling construction can carry out post grouting process after finishing; Thereby change the physico-mechanical properties of the soil body, improve pile body bearing capacity and stake with between be connected.
The hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention pile length direction is extended with main muscle 1 ' and the spiral stirrup 3 around said main muscle; Said main muscle 1 ' is triangular in shape; Main muscle 1 ' is filled with the stirrup 3 interior concrete 2 that adopt, and the big I of stirrup spacing a, external protection concrete thickness m and inner protective layer concrete thickness n is suitably changing among Fig. 1.The hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete stake cross section is the fillet triangle, and the big I of fillet 4 suitably changes among the figure, all belongs to protection domain of the present invention.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, pre-buried Grouting Pipe in the pile body forming process behind pile foundation construction, is carried out grouting process, from but the soil body fully contact with pile body.On the one hand the soil body is fully contacted with pile body, higher pile body bearing capacity was provided before the soil body stops, slip casting simultaneously makes the soil body obtain reinforcing, and also can increase pile body bearing capacity, strengthen simultaneously stake with between be connected.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention; Its cross section is the fillet triangle; Effectively raise the specific area of material, can make unit materials have bigger surface area, thereby the stake side-friction force of raising preformed pile is to improve bearing capacity of single pile.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, its cross section is the fillet triangle, its corner is stress and eliminates circular arc, so the present invention's corner in the pile body moulding is easy to moulding, can effectively improve the pile rate.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, its cross section is the fillet triangle, its corner is stress and eliminates circular arc, so the present invention's corner in the pile body moulding is easy to moulding, can effectively improve product pile rate.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention; Its cross section is the fillet triangle; Its corner is stress and eliminates circular arc, so that the present invention can effectively eliminate stress in the pile foundation construction process is concentrated, can effectively improve construction pile rate.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, its cross section is the fillet triangle, its corner is stress and eliminates circular arc; Main muscle layout triangular in shape is said from structure, master's muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral the shape stirrup to be welded, make in the production pile body ductility good, become that pile capacity is big, the bending resistance shear behavior is good, shock resistance is strong.
The stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete provided by the invention, its cross section is the fillet triangle, its corner is stress and eliminates circular arc; Main muscle layout triangular in shape is said from structure, master's muscle of the present invention is rationally distributed, reinforcing cage in the shape of a spiral the shape stirrup effectively raise the globality of pile body to be welded, bearing capacity of single pile is big behind the construction pile, the bending resistance shear behavior is good, shock resistance is strong.
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 describes in the foregoing description and the manual just explains principle of the present invention, and under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications; These variations and improvement all fall in the scope of the invention that requires protection, and the present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete stake; It is characterized in that: the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake y direction is provided with the central through hole that runs through the stake of the hollow fillet triangle of whole grouting behind shaft or drift lining pretensioning prestressed concrete; Interior all cross sections of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake are the fillet triangle; The periphery cross section of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete stake is the fillet triangle; The stake of the hollow fillet triangle of said grouting behind shaft or drift lining pretensioning prestressed concrete is identical in interior all cross section geometry of whole y direction; The peripheral cross-section physical dimension is also identical, and said triangle stake comprises that three main muscle extending along triangle pile length direction and spiral center on the stirrup of said main muscle, and three main muscle lay respectively on three limits of leg-of-mutton triangle stake; Be embedded with Grouting Pipe on three fillets of triangle stake, said main muscle is a prestressing force master muscle.
2. the stake of the hollow fillet triangle of grouting behind shaft or drift lining pretensioning prestressed concrete according to claim 1, it is characterized in that: said main muscle is positioned on the mid point on three limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102015746A CN102733382A (en) | 2012-06-18 | 2012-06-18 | Post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102015746A CN102733382A (en) | 2012-06-18 | 2012-06-18 | Post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile |
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| CN102733382A true CN102733382A (en) | 2012-10-17 |
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| CN2012102015746A Pending CN102733382A (en) | 2012-06-18 | 2012-06-18 | Post-grouting pre-tensioning method prestressed concrete hollow round-corner triangular pile |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1054031A (en) * | 1996-08-09 | 1998-02-24 | Maeda Seikan Kk | Pre-stress concrete pile and its positioning method of pile |
| CN2370066Y (en) * | 1998-08-10 | 2000-03-22 | 叶长生 | Channel slip casting steel bar concrete hollow prefabricated pile |
| CN2418163Y (en) * | 2000-04-19 | 2001-02-07 | 于陵 | Prestressed concrete triangular foundation pile |
| CN2546498Y (en) * | 2001-12-18 | 2003-04-23 | 杜新智 | Angle hollow precast pile |
| CN201560424U (en) * | 2009-11-20 | 2010-08-25 | 上海强劲基础工程有限公司 | Triangular concrete pile |
| CN101914914A (en) * | 2010-08-19 | 2010-12-15 | 上海中技桩业股份有限公司 | Concrete pre-stress hollow square pile and molding method thereof |
-
2012
- 2012-06-18 CN CN2012102015746A patent/CN102733382A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1054031A (en) * | 1996-08-09 | 1998-02-24 | Maeda Seikan Kk | Pre-stress concrete pile and its positioning method of pile |
| CN2370066Y (en) * | 1998-08-10 | 2000-03-22 | 叶长生 | Channel slip casting steel bar concrete hollow prefabricated pile |
| CN2418163Y (en) * | 2000-04-19 | 2001-02-07 | 于陵 | Prestressed concrete triangular foundation pile |
| CN2546498Y (en) * | 2001-12-18 | 2003-04-23 | 杜新智 | Angle hollow precast pile |
| CN201560424U (en) * | 2009-11-20 | 2010-08-25 | 上海强劲基础工程有限公司 | Triangular concrete pile |
| CN101914914A (en) * | 2010-08-19 | 2010-12-15 | 上海中技桩业股份有限公司 | Concrete pre-stress hollow square pile and molding method thereof |
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Application publication date: 20121017 |