CN100404760C - High strength hollow high-efficient pile tip - Google Patents
High strength hollow high-efficient pile tip Download PDFInfo
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- CN100404760C CN100404760C CNB200410040718XA CN200410040718A CN100404760C CN 100404760 C CN100404760 C CN 100404760C CN B200410040718X A CNB200410040718X A CN B200410040718XA CN 200410040718 A CN200410040718 A CN 200410040718A CN 100404760 C CN100404760 C CN 100404760C
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- hollow
- pile
- stake
- synergy
- pile toe
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Abstract
The present invention relates to a high strength hollow synergic pile toe. The present invention is characterized in that the whole pile toe is provided with a through hole along a central vertical axis, the through hole forms a hollow symmetrical shape, and the sectional plane of the outer side forms a conical structure with the large upper part and the small lower part; the upper part of the pile toe is provided with a horizontal end head plate, main reinforced bar anchor holes are uniformly distributed on the horizontal end head plate, main reinforced bars pass through the main reinforced bar anchor holes and are connected with annular steel cutting edges of a conical tip, and the main reinforced bars are wound and are connected in a spiral way by spiral hoops. The cross sectional shape of the upper part of the pile toe is a square, or a rectangle, or a hexagon, or an octagon, or a circular shape, or a polygon, or a random geometry; the cross sectional shape of the through hole of the middle part of the pile toe forms a polygon or a circular shape; the annular steel cutting edges of the conical tip are closed high strength steel cutting edges; the main reinforced bars are uniformly distributed at the middle part of the pile toe and are wound and connected in a spiral way by the spiral hoops; the inner side of a conical steel plate between the end head plate and the annular steel cutting edges are welded with a plurality of intercross reinforced bars. The hollow synergic pile toe can be matched with a hollow pile in a corresponding shape for use, and the advantages of small soil compaction effect, large friction force and high unit bearing capacity of the hollow pile can be fully used; as the present invention has the conical structure, the penetrating power is strong, and the pile sinking efficiency of the hollow pile is considerably improved.
Description
Technical field:
The present invention relates to foundations such as a kind of industry and civilian construction, bridge, harbour handles with hollow foundation pile point.Belong to building construction, highway, railway, water power, port and pier construction work foundation processing building material field.
Background technology:
In foundation treatment project such as current industry and civilian construction, bridge, harbour, the hollow pile of multiple shapes such as enhancing side's stake of hollow, the stake of prestressing force enhancing side and pile for prestressed pipe is all used in a large number.Though it is reliable that above-mentioned stake shape has steady quality, intensity, unit bearing capacity and anti-shearing force height, short construction period, the environmental protection of form of construction work civilization, energy conservation, advantage such as reduce cost, but when running into comparatively hard argillic horizon or circle gravel, flour sand layer, matching used with it solid concrete stake point is not high because of its intensity, the one, penetrating resistance increases, even cause stake point damaged, its processing method or constantly to the pile body intensified pressure, until quick-fried stake.Be just to stop to exert pressure after reaching certain pressure, redundance is done to cut stake and is disposed.Its result must be that the pile sinking degree of depth does not reach designing requirement, and a stake tip does not reach the design bearing stratum, causes the Design of pile foundation effect to miss one's aim and cuts stake and waste; The 2nd, increased to around the effect of soil compaction, cause earth heaving, bearing capacity descends significantly, also can cause other pile of periphery to be subjected to displacement, the accuracy of influence stake position; The 3rd, Guan in can not gush soil, having lost the use hollow pile will increase frictional force exactly, reaches the purpose that improves unit bearing capacity effect.
Summary of the invention:
Purpose of the present invention is in the shortcoming of the existing stake point of gram newspaper, soil compaction effect is little when inventing a kind of pile sinking, can allow earth soil pour in hollow pile body inside, increase frictional force (resistance), improve the unit carrying, safe and reliable, and the high intension hollow synergy pile toe that can be used with other respective cross-section shape hollow pile.
The present invention seeks to finish: a kind of high intension hollow synergy pile toe by following array structure, it is characterized in that whole stake point has-through hole along central longitudinal axis, and be the hollow symmetry shape, the big up and small down pyramidal structure of outside section, the sharp top of stake is a horizontal end plate, and the awl tip is annular steel cutting edge.Be evenly distributed with main muscle anchor hole on the end plate on the sharp top of stake, the main muscle anchor hole that main muscle passes on auspicious the plate links to each other with the annular steel cutting edge at awl tip, is joined by the winding of spiral stirrup spiral between each main muscle; Perhaps be curled into coniformly between the end plate on stake point top and annular steel cutting edge with steel plate, several reinforcing ribs can be equipped with in its inboard.The shape of cross section on the sharp top of stake is square, rectangle, hexagon, octagon, circle, polygon or random geometry: the through hole shape of cross section at a point middle part is regular polygon or circle: the most advanced and sophisticated annular steel cutting edge of awl is a closed form high strength steel cutting edge: a point middle part is evenly distributed with the main muscle of number, and twines continuous with the spiral stirrup spiral: end plate and annular steel cutting edge intercentrum shape steel plate inboard are welded with several cross one another reinforcing ribs.
Stake point of the present invention can adopt any material, as concrete, steel plate, alloy etc., when using steel plate, several cross one another main muscle is housed in it, and main muscle preferably adopts rod iron, to increase hollow pile point structural strength.
When using high strength hollow pile point of the present invention to make the foundation pile stake point of building, particularly with another part patent of invention of present patent application inventor---the hollow pile of the respective shapes that " centrifugal process stream curing system prestress high intensity concrete hollow square pile " made is used when squeezing into base soil, because of its hollow synergy stake point inside is a cavity, through hole 4 communicates with hollow pile pile body hollow part, when it is driven into base soil, the earth of base in the soil passes the inside, hole that cavities in the hollow synergy stake point pours in hollow pile, be full of base soil in the hollow tube chamber in a large number, hollow pile improves the accuracy of pile position to the soil compaction effect of base soil on every side when reducing piling so on the one hand; Pouring in the intraluminal basic soil of hollow pile on the other hand can also increase every hollow pile and the native rubbing surface of base, under friction factor the same terms, can increase substantially the bearing capacity of pile foundation of hollow pile.
High intension hollow synergy pile toe of the present invention can be used with the hollow pile of respective shapes, it is little that it not only can give full play to the hollow pile soil compaction effect, frictional force is big, the unit carrying is high, penetration power is strong, the fireballing advantage of pile sinking, and because of its point is hollow symmetry shape structure along central longitudinal axis, for from its tube chamber inner hole, scratch soil, fetching earth provides operating walk way.
Description of drawings:
Below in conjunction with the accompanying drawing illustrated embodiment, structure of the present invention is described further, but protection domain is not limit embodiment.
Fig. 1 is the structural representation of high intension hollow synergy pile toe of the present invention.Its king-pile point middle part is up big and down small cone-shaped.
Fig. 2 is the sectional drawing along y direction shown in Figure 1.
Fig. 3 is a vertical view shown in Figure 1.
Fig. 4 is at phantom drawing shown in Figure 1.
Fig. 5 is the structural representation of steel work high intension hollow synergy pile toe of the present invention. its king-pile point middle part is up big and down small cone-shaped.
Fig. 6 is the sectional drawing along y direction shown in Figure 5.
Fig. 7 is a vertical view shown in Figure 5.
Fig. 8 is at phantom drawing shown in Figure 5.
Fig. 9 is the structural representation of high intension hollow synergy pile toe of the present invention, and its king-pile point middle part is up big and down small cone-shaped.
Figure 10 is the sectional drawing along y direction shown in Figure 9.
Figure 11 is a vertical view shown in Figure 9.
Figure 12 is a phantom drawing shown in Figure 9.
Figure 13 is the structural representation of the circular high intension hollow synergy pile toe of steel work of the present invention, and its king-pile point middle part is up big and down small cone-shaped.
Figure 14 is the sectional drawing along y direction shown in Figure 13.
Figure 15 is a vertical view shown in Figure 13.
Figure 16 is a phantom drawing shown in Figure 13.
The specific embodiment:
Embodiment 1: by structure shown in Figure 1, make high intension hollow synergy pile toe, install reinforcing bar in the middle of the concrete additional, the level cross-sectionn of its pyramidal structure is a hollow state, be regular polygon or circle, big up and small down square or circular in side, the sharp top of a stake end plate 1 is used for joining with the bottom end plate of hollow pile; The annular steel cutting edge 3 of stake pointed cone end selects high-strength steel sheet.The bottom size coupling of the hollow pile that the appearance and size of the sharp top of stake end plate 1 is coupled, use high-grade (more than the C60) concrete that end plate 1, main muscle 5, spiral stirrup 6, annular steel cutting edge 3 are cast at last and constitute the sharp leg 2 of stake together, constitute high intension hollow synergy pile toe of the present invention.
During pile sinking, piling machinery is pressurized on the hollow pile body, and pushing hollow synergy stake point in hollow pile bottom overcomes basic soil resistance and reaches quick pile sinking purpose; In the pile driving process, a part of base soil pours in the hollow pile inner chamber by the hollow bulb of stake point, increase pile body and the native rubbing surface of base, improve the bearing capacity of single pile, next is to have reduced the soil compaction effect in the pile driving process, has improved the quality of pile, and it is fast to reach speed of application, pile quality and bearing capacity of single pile height, and then realize the purpose that production efficiency and remarkable in economical benefits improve.
Embodiment 2: adopt the steel screen to make the hollow synergy stake point of steel work of the present invention, its shape is identical with high strength concrete hollow stake point with structure.Steel plate with suitable thickness between end plate 1 and annular steel cutting edge 3 is curled into coniform welding fabrication, several cross one another reinforcing ribs can be equipped with in 3 inboards between its end plate 1 and the annular steel cutting edge, reinforcing rib preferably adopts rod iron, to increase hollow synergy stake point structural strength, improve the penetration power of hollow synergy stake point.
The 1-end plate; 2-stake point leg; 3-annular steel cutting edge; The 4-through hole; 5 mouthfuls-main muscle; The 6-tie hoop; 7-master's muscle Anchor hole.
Claims (7)
1. high intension hollow synergy pile toe, it is characterized in that whole stake point has a through hole (4) along central longitudinal axis, and be the hollow symmetry shape, the big up and small down pyramidal structure of outside section, the sharp top of stake is a horizontal end plate (1), the awl tip is an annular steel cutting edge (3), the end plate (1) on the sharp top of stake is evenly distributed with main muscle anchor hole (7), the main muscle anchor hole (7) that main muscle passes on the end plate (1) links to each other with the annular steel cutting edge (3) at awl tip, is joined by the winding of spiral stirrup (6) spiral between each main muscle (5); Perhaps be curled into coniformly between the end plate (1) on stake point top and annular steel cutting edge (3) with steel plate, several reinforcing ribs are equipped with in its inboard.
2. high intension hollow synergy pile toe according to claim 1 is characterized in that the shape of cross section on the sharp top of stake is polygon or random geometry.
3. high intension hollow synergy pile toe according to claim 1 is characterized in that through hole (4) shape of cross section at stake point middle part is regular polygon or circle.
4. high intension hollow synergy pile toe according to claim 1, it is characterized in that boring most advanced and sophisticated annular steel cutting edge (3) is the closed form cutting edge that adopts the high strength steel material to make.
5. high intension hollow synergy pile toe according to claim 1 is characterized in that stake point middle part is evenly distributed with several main muscle (5), and joins with the winding of spiral stirrup (6) spiral.
6. high intension hollow synergy pile toe according to claim 1 is characterized in that the interior hand hay cutter of end plate (1) and annular steel cutting edge (3) intercentrum shape steel plate is welded with several cross one another reinforcing ribs.
7. high intension hollow synergy pile toe according to claim 2, the shape of cross section that it is characterized in that the sharp top of described stake are that polygon is meant and is square, rectangle, hexagon, octagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410040718XA CN100404760C (en) | 2004-09-16 | 2004-09-16 | High strength hollow high-efficient pile tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410040718XA CN100404760C (en) | 2004-09-16 | 2004-09-16 | High strength hollow high-efficient pile tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598169A CN1598169A (en) | 2005-03-23 |
| CN100404760C true CN100404760C (en) | 2008-07-23 |
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ID=34664763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410040718XA Expired - Fee Related CN100404760C (en) | 2004-09-16 | 2004-09-16 | High strength hollow high-efficient pile tip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100404760C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245642A (en) * | 2016-07-27 | 2016-12-21 | 华信咨询设计研究院有限公司 | A kind of pre-stressed concrete pipe pile foundation and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916633A (en) * | 1973-08-24 | 1975-11-04 | Engineering Technology Analyst | Means for altering motion response of offshore drilling units |
| CN2182196Y (en) * | 1994-01-31 | 1994-11-09 | 邓祥林 | Hollow precast reinforced pile |
| CN2224221Y (en) * | 1994-12-19 | 1996-04-10 | 张维圈 | Pile tip for preventing pile from being crossed with hole and pile |
| CN2262568Y (en) * | 1996-12-20 | 1997-09-17 | 昆明大力地基有限公司 | Detachable multi-section combined pile head |
| CN2729151Y (en) * | 2004-09-16 | 2005-09-28 | 颜小荣 | High-strength hollow pile top |
-
2004
- 2004-09-16 CN CNB200410040718XA patent/CN100404760C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916633A (en) * | 1973-08-24 | 1975-11-04 | Engineering Technology Analyst | Means for altering motion response of offshore drilling units |
| CN2182196Y (en) * | 1994-01-31 | 1994-11-09 | 邓祥林 | Hollow precast reinforced pile |
| CN2224221Y (en) * | 1994-12-19 | 1996-04-10 | 张维圈 | Pile tip for preventing pile from being crossed with hole and pile |
| CN2262568Y (en) * | 1996-12-20 | 1997-09-17 | 昆明大力地基有限公司 | Detachable multi-section combined pile head |
| CN2729151Y (en) * | 2004-09-16 | 2005-09-28 | 颜小荣 | High-strength hollow pile top |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1598169A (en) | 2005-03-23 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20100916 |