CN105019429A - Partially-prestressed Y-shaped precast reinforced concrete pile - Google Patents
Partially-prestressed Y-shaped precast reinforced concrete pile Download PDFInfo
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- CN105019429A CN105019429A CN201510397541.7A CN201510397541A CN105019429A CN 105019429 A CN105019429 A CN 105019429A CN 201510397541 A CN201510397541 A CN 201510397541A CN 105019429 A CN105019429 A CN 105019429A
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Abstract
The invention discloses a partially-prestressed Y-shaped precast reinforced concrete pile. The pile comprises a pile body and a pile cap. The cross section of the pile body is in the shape of Y. The pile body is composed of a reinforcement cage and concrete. The reinforcement cage is triangular and formed by connecting prestressed main ribs, common main ribs and stirrups in a welding and/or binding manner. The prestressed main ribs are preferentially arranged on three edges of the reinforcement cage and then are evenly distributed on the three column faces of the reinforcement cage. Each common main rib is arranged between two corresponding adjacent prestressed main ribs. The pile cap is formed by welding end plates with Y-shaped cross sections and skirt edges. The end plates are provided with prestressed main rib through holes and anchoring rib through holes. The prestressed main ribs and anchoring ribs penetrate the through holes to be connected with the end plates, and the pile cap and the pile body are fixed. The pile is large in material specific area and saves materials, and the bearing capacity of the pile body is high.
Description
Technical field
The present invention relates to building field, relate to the precast reinforced concrete pile of a kind of partial prestressing Y shape specifically.
Background technology
Since the nineties in last century, prestress high intensity concrete stake obtains significant progress in China.Wherein topmost pile-type is prestressed high-strength concrete pile, and this pile-type adopts centrifuging process shaping, the advantages such as have strength grade of concrete high, pile body vertical bearing capacity is high, and anti-bending strength is good, short construction period, and overall economic efficiency is good.But further investigation in recent years shows, prestressed high-strength concrete pile horizontal bearing capacity is relatively low, in transport and the easy brittle failure of work progress pile.For this problem, pile body design has occurred that lengthways main steel bar muscle part adopts the main muscle of prestressing force, and part adopts the arrangement of reinforcement scheme of common main muscle.The effect of the main muscle of prestressing force is the stress performance improving pile body, and in pile body tensile region, concrete compressive pre-stress offsets part tensile stress, contributes to improving pile body tensile capacity and shear resistance capacity; The effect of common main muscle bears pulling force together with muscle main with prestressing force, reduces the tensile stress that the main muscle of prestressing force bears, improve pile body safety.It is hypodynamic that this arrangement of reinforcement scheme can effectively solve pile body horizontal bearing.
By changing concrete pile shape of cross section, improving unit materials intensity and utilizing, while saving constructional materials consumption, improve bearing capacity of pile foundation is one of important content of pile foundation investigation of materials.The bearing capacity of precast reinforced concrete pile is relevant with stake surrounding soil contact area with pile body side, when other condition is all identical, pile body side and stake surrounding soil contact area larger, the bearing capacity of stake is higher.The area of pile body side affects significantly by pile body cross-sectional form.The main muscle of applying portion prestressing force on market, pile-type mainly pile tube and the square pile of the arrangement of reinforcement scheme of the common main muscle of part, such specific area is little, and stock utilization is relatively low, does not give full play to the performance of material.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides the precast reinforced concrete pile of a kind of partial prestressing Y shape.
Technical scheme: in order to solve the problems of the technologies described above, a kind of partial prestressing Y shape of the present invention precast reinforced concrete pile, is the cylinder of Y shape in cross section, comprises pile body and pile cover.Described pile body cross section is Y shape, comprises concrete, reinforcing cage; Described reinforcing cage is triangle, comprises the main muscle of prestressing force, common main muscle and stirrup; The main muscle of described prestressing force longitudinally runs through pile body and fixes with two ends end plate, described common main muscle is apart from about one, pile body end thickness of concrete cover, described stirrup is triangular in shape, by welding and or colligation be connected to outside the main muscle of prestressing force, common main muscle and form reinforcing cage; Described pile cover is welded by end plate and shirt rim, and described end plate is Y-shaped, and inner side is connected with anchor rib, the hollow short cylinder of to be cross section be in described shirt rim Y shape.
As preferably, the pile body cylinder of described Y shape precast reinforced concrete pile comprises three indent arcwall faces, and adjacent indent arcwall face is connected by plane or arc surface, and forms the convex wing of pile body.
As preferably, three ribs of described reinforcing cage are arranged on the inner side of Y shape pile body three wings, all should meet the requirement of thickness of concrete cover along cross section each point simultaneously.
As preferably, the main muscle of described prestressing force is preferentially arranged on three seamed edges of reinforcing cage, and next is distributed on three cylinders of reinforcing cage, and common main muscle is arranged between adjacent two main muscle of prestressing force.
As preferably, described stirrup is less than the stirrup spacing in pile body near middle region in the stirrup spacing of stake end near zone.
As preferably, described end plate arranges through hole, for connecting the main muscle of prestressing force and anchor rib.
Beneficial effect: partial prestressing Y shape of the present invention precast reinforced concrete pile, has the following advantages:
(1) partial prestressing Y shape of the present invention precast reinforced concrete pile, its cross section is Y shape, and pile shaft material specific area is large, consumptive material is few, low-consuming, can give full play to the performance of pile shaft material, improve stock utilization, under same volume concrete amount, improve pile body bearing capacity;
(2) partial prestressing Y shape precast reinforced concrete pile of the present invention adopts common main muscle and the main muscle of prestressing force comprehensively to arrange, makes pile body have good ductility, higher anti-bending strength and stronger bearing capacity.
Accompanying drawing explanation
Fig. 1 is a kind of partial prestressing Y shape precast reinforced concrete pile vertical structure figure that the present invention proposes;
Fig. 2 is a kind of partial prestressing Y shape precast reinforced concrete pile A-A cross section structure figure that the present invention proposes;
Fig. 3 is a kind of partial prestressing Y shape precast reinforced concrete pile B-B cross section structure figure that the present invention proposes;
Fig. 4 is the tip plate configurations schematic diagram of a kind of partial prestressing Y shape precast reinforced concrete pile that the present invention proposes;
In figure: 1 is the main muscle of prestressing force, 2 is common main muscle, and 3 is stirrups, and 4 is concrete, and 5 is end plates, and 6 is shirt rims, and 7 is anchor ribs, and 8 is the main muscle through holes of prestressing force, and 9 is anchor rib through holes.
Detailed description of the invention
The partial prestressing Y shape precast reinforced concrete pile of the present embodiment, comprise pile body and pile cover, pile body cross section is Y-shaped.Pile body comprises the reinforcing cage and concrete 4 that are made up of the main muscle of prestressing force 1, common main muscle 2, stirrup 3; Pile cover comprises end plate 5 and shirt rim 6, as shown in Figure of description 1-4.
Make reinforcing cage: stirrup 3 is triangular in shape, the main muscle 1 of prestressing force preferentially welding and/or colligation is connected to three angle points of stirrup 3, secondly welding and/or colligation are connected to the mid point on three limits of stirrup 3, common main muscle 2 welds with stirrup 3 and/or colligation is connected, and be positioned in the middle of two main muscle 1 of identical prestressing force, complete the making of reinforcing cage.
Make pile cover, and be connected with reinforcing cage: end plate 5 and shirt rim 6 are welded formation pile cover, end plate 5 pre-sets the main muscle through hole 8 of prestressing force and anchor rib through hole 9; Main for prestressing force muscle 1 through the main muscle through hole 8 of prestressing force on end plate 5, and is fixed with end plate 5 by welding manner by the main muscle of the prestressing force in reinforcing cage 1; In order to strengthen the connection of pile cover and pile body, pile body end is provided with anchor rib 7, anchor rib 7 and end plate 5 through the anchor rib through hole 9 on end plate 5, and are fixed by welding manner by anchor rib 7.So, the connection of reinforcing cage and pile cover is completed.
The main muscle of stretch-draw prestressing force: reinforcing cage is put into mould, the seamed edge of reinforcing cage is corresponding with position outstanding in the Y shape cavity of mould.Stretch board is installed in reinforcing cage one end, and the other end and mould are fixed.Afterwards, be connected with tensioner, by the main muscle of tensioner stretch-draw prestressing force, so that Shi Hanzhang in the one end of installing stretch board.
Cloth is shaping: by raw material such as sand, stone, cement, water and various Admixtures according to design mixture proportion through metering, stir after-pouring in mould, and to vibrate while building.
Maintenance and the demoulding: after completing cloth, carry out maintenance, when concrete reaches demoulding strength, carry out the demoulding.
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, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. the precast reinforced concrete pile of partial prestressing Y shape, is characterized in that, comprises pile body and pile cover, and described pile body cross section is Y shape, comprises concrete, reinforcing cage; Described reinforcing cage cross section is triangle, to be welded and/or colligation is formed by connecting by the main muscle of prestressing force, common main muscle with stirrup; The main muscle of described prestressing force longitudinally runs through pile body and fixes with end plate, and described common main muscle is apart from about one, pile body end thickness of concrete cover, and described stirrup is triangular in shape; Described pile cover is welded by end plate and shirt rim, and described end plate is Y-shaped, and inboard is connected with anchor rib, the hollow short cylinder of to be cross section be in described shirt rim Y shape.
2. partial prestressing Y shape according to claim 1 precast reinforced concrete pile, is characterized in that, three ribs of described reinforcing cage are arranged on the inner side of Y shape pile body three wings, all should meet the requirement of thickness of concrete cover along cross section each point simultaneously.
3. partial prestressing Y shape according to claim 1 precast reinforced concrete pile, it is characterized in that, the main muscle of described prestressing force is preferentially arranged on three seamed edges of reinforcing cage, and next is distributed on three cylinders of reinforcing cage, and common main muscle is arranged between adjacent two main muscle of prestressing force.
4. partial prestressing Y shape according to claim 1 precast reinforced concrete pile, is characterized in that, described end plate arranges through hole, for connecting the main muscle of prestressing force and anchor rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510397541.7A CN105019429A (en) | 2015-07-01 | 2015-07-01 | Partially-prestressed Y-shaped precast reinforced concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510397541.7A CN105019429A (en) | 2015-07-01 | 2015-07-01 | Partially-prestressed Y-shaped precast reinforced concrete pile |
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| Publication Number | Publication Date |
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| CN105019429A true CN105019429A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510397541.7A Pending CN105019429A (en) | 2015-07-01 | 2015-07-01 | Partially-prestressed Y-shaped precast reinforced concrete pile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759276A (en) * | 2017-03-08 | 2017-05-31 | 威海齐德新型建材有限公司 | A kind of many rib prefabricated foundation stakes |
| CN108330989A (en) * | 2018-04-17 | 2018-07-27 | 安徽省建筑科学研究设计院 | A kind of Ω types foundation pit supporting pile and its connection structure |
| CN112323789A (en) * | 2020-10-27 | 2021-02-05 | 李飞虎 | Prestressed precast concrete tubular pile |
-
2015
- 2015-07-01 CN CN201510397541.7A patent/CN105019429A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759276A (en) * | 2017-03-08 | 2017-05-31 | 威海齐德新型建材有限公司 | A kind of many rib prefabricated foundation stakes |
| CN108330989A (en) * | 2018-04-17 | 2018-07-27 | 安徽省建筑科学研究设计院 | A kind of Ω types foundation pit supporting pile and its connection structure |
| CN112323789A (en) * | 2020-10-27 | 2021-02-05 | 李飞虎 | Prestressed precast concrete tubular pile |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |
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| WD01 | Invention patent application deemed withdrawn after publication |