CN102261065A - Opened high-strength concrete prefabricated pile, and pile mould and centrifugal manufacturing method thereof - Google Patents
Opened high-strength concrete prefabricated pile, and pile mould and centrifugal manufacturing method thereof Download PDFInfo
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- CN102261065A CN102261065A CN2010101842583A CN201010184258A CN102261065A CN 102261065 A CN102261065 A CN 102261065A CN 2010101842583 A CN2010101842583 A CN 2010101842583A CN 201010184258 A CN201010184258 A CN 201010184258A CN 102261065 A CN102261065 A CN 102261065A
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Abstract
The invention relates to an opened high-strength concrete prefabricated pile, and a pile mould and a centrifugal manufacturing method thereof, belonging to the field of pile foundation engineering. The opened high-strength concrete prefabricated pile comprises a pre-stressed steel strand (1) and a high-strength concrete prefabricated pile body (2) bonded outside the pre-stressed steel strand (1). A concave curved surface (3) formed by being centrifugally formed and having a circular arc section is arranged on one of side surfaces of the high-strength concrete prefabricated pile body (2). According to different section shapes, pile forms, such as H piles, slotted piles, corner piles, opened cylindrical piles, star piles and the like, are provided; a pile mould for centrifugally forming a plurality of piles at one time and a forming method are further provided; and a PMW soil-retaining and water-stopping pile structure that the opened high-strength concrete prefabricated pile and a cement soil pile are combined and a construction method thereof are provided. The opened high-strength concrete prefabricated pile disclosed by the invention has the advantages of high material intensity, good bending resistant performance, low pile driving effect and obvious environment-friendly benefit. The cost of the pile foundation engineering can be greatly saved.
Description
Technical field
The present invention relates to the pile foundation engineering field.
Background technology
Concrete precast pile is a kind of important pile foundation form, advantage such as fast because of the concrete precast pile speed of application, that cost is low, quality is easy to control is widely used, and available coagulation soil preformed pile mainly comprises preformed pile forms such as concrete prefabricated side's stake, Pretensioned spun concrete piles, pre-stressed concrete hollow square stake.Pretensioned spun concrete piles wherein, pre-stressed concrete hollow square stake are made fast because of the concrete strength of pile height, are convenient to advantages such as automated production, have obtained extensive use in recent years.These two kinds of stake types have all adopted centrifugal molding process, by the centrifugal concrete compaction that makes, and at stake kernel of section position formation circular hole, can form high strength hollow concrete pile body after maintenance, therefore have the material-saving effect.But these two kinds of stake types are the closing pile type, promptly the position, space in the stake cross section is positioned at an inside, cross section, in the piling construction process, the soil body forms the soil plug after entering hollow position, be difficult to utilize pile body top hollow pipeline to reduce the piling soil compaction effect, after the soil plug forms, penetrating resistance that pile body buries and soil compaction during pile driving effect are equal to solid pile, therefore has soil compaction effect hinge significant disadvantages, the pile body bending resistance is relatively poor in addition, the high-strength concrete preformed pile seldom uses in bracing of foundation pit at present, underuses pile body cross section cavity and reduces penetrating resistance and soil compaction during pile driving effect.
The content of invention
First purpose of the present invention is to provide a kind of opening high-strength concrete preformed pile, this opening high-strength concrete preformed pile can increase the friction side area of the pile body and the soil body, increase the pile body collateral resistance, reduce penetrating resistance and soil compaction during pile driving effect, and can improve the pile body bending resistance, can be used as the bracing of foundation pit stake, expanded the range of application of high-strength concrete preformed pile.Save construction costs, environment protecting is good, easy construction, reliable in quality.
This opening high-strength concrete preformed pile comprises prestress wire, bonds the prefabricated pile body of high-strength concrete in the prestress wire outside, and the cross section that has a side to have centrifugal forming in high-strength concrete preformed pile body side surface is the concave curved surface of circular arc.
In above-mentioned opening high-strength concrete preformed pile, but the prefabricated pile body of above-mentioned high-strength concrete two ends be provided with the stretch-draw prestressing force steel strand and with the consistent end plate of high-strength concrete preformed pile body section shape, end plate bore is set on the end plate, end plate bore comprises that pierce into hole and anchor hole two parts of communicating form, wherein anchor hole is made up of outer hole and endoporus two parts of mutual perforation, the diameter in outer hole pierces into the diameter of bore of the diameter in hole greater than anchor hole greater than endoporus.
In above-mentioned opening high-strength concrete preformed pile, above-mentioned high-strength concrete preformed pile body side surface comprises four sides, wherein two sides are that plane and opposing parallel are arranged, two other side is that the side and the opposing parallel of groove shaped arranged, the cross section that has the side of a groove shaped to have centrifugal forming in the side of two groove shaped is the concave curved surface of circular arc, high-strength concrete preformed pile body section shape approximation H font forms the stake of high-strength concrete H type.
In above-mentioned opening high-strength concrete preformed pile, above-mentioned high-strength concrete preformed pile body side surface comprises four sides, wherein two sides are that plane and opposing parallel are arranged, two other opposing parallel arranges that the cross section that the cross section that a side is arranged in side comprises a centrifugal forming is the concave curved surface of circular arc, high-strength concrete preformed pile body section shape approximation flute profile forms the stake of high-strength concrete groove.
In above-mentioned opening high-strength concrete preformed pile, the prefabricated pile body of above-mentioned high-strength concrete is a semi-cylindrical shaped, forms the stake of high-strength concrete opening cylinder.
In above-mentioned opening high-strength concrete preformed pile, above-mentioned prefabricated pile body comprises a plurality of side surfaces, and comprising one in each side surface, the cross section is arranged is the concave surface of circular arc, and it is the concave curved surface of circular arc that the cross section that comprises a centrifugal forming in the side surface is arranged, and forms the star-like stake of high-strength concrete.
In above-mentioned opening high-strength concrete preformed pile, the prefabricated pile body of above-mentioned high-strength concrete comprises three side surfaces, wherein two side surfaces are the plane, and the cross section that the 3rd side surface middle part comprises a centrifugal forming is the concave curved surface of circular arc, forms high-strength concrete angle stake.
Second purpose of the present invention is to provide the centrifugal legal system stake of an a kind of opening high-strength concrete preformed pile stake mould, the centrifugal legal system stake of this opening high-strength concrete preformed pile can realize the manufacturing of opening high-strength concrete preformed pile smoothly with the stake mould, make the system stake convenient, stake model valency is low, reliable in quality.
The centrifugal legal system stake of this opening high-strength concrete preformed pile comprises single pile side form and centrifugal connector two parts composition with the stake mould, wherein the single pile side form comprises side template and side template connector two parts composition, side template is for being connected to the member of a side surface sealing by the side template connector, the side template connector is to tighten or loosen each side template to realize the interface unit of preformed pile system mould and form removal, centrifugal connector is for being connected with single or multiple single pile side forms and can carrying out rotating around its centrifugal axis and external surface has the member of circular device, and the centrifugal axis of centrifugal connector is positioned at the outside of the prefabricated pile body of opening high-strength concrete behind centrifugal forming.
Use in the stake mould in the centrifugal legal system stake of above-mentioned opening high-strength concrete preformed pile, above-mentioned single pile side form can be comprise two parallel placements and for dull and stereotyped edge of a wing template with two and opposing parallel is placed and wherein a web template that has the outside concave curved surface of opening form formation H type stake stake mould.
Use in the stake mould in the centrifugal legal system stake of above-mentioned opening high-strength concrete preformed pile, above-mentioned single pile side form can be that three flat boards that can be spliced into the triangular prism side are formed, and forms angle stake stake mould.
Use in the stake mould in the centrifugal legal system stake of above-mentioned opening high-strength concrete preformed pile, above-mentioned single pile side form can be that four flat boards that can be spliced into the cuboid side are formed, and forms groove stake stake mould.
The centrifugal legal system stake of above-mentioned opening high-strength concrete preformed pile with the stake mould in, above-mentioned single pile side form can be that the side template that polylith can be spliced into closed side and have a concave curved surface is formed, and forms a star-like stake mould.
Use in the stake mould in the centrifugal legal system stake of above-mentioned opening high-strength concrete preformed pile, above-mentioned single pile side form can be that the arc surface that can be spliced into the closed circular cylinder more than two and two is formed, and forms opening cylinder stake stake mould.
The 3rd purpose of the present invention provides a kind of opening high-strength concrete preformed pile one changes many centrifugal formation methods, and this centrifugal formation method can convenient and swiftly be finished the moulding of opening high-strength concrete preformed pile at low cost.
This opening high-strength concrete preformed pile one changes many centrifugal formation methods and may further comprise the steps:
A) prestressed steel strand, in the single pile side form, insert high-strength concrete and mix and stir material, seal the single pile side form, and two covers or the above single pile side form of two covers are linked to each other with centrifugal connector, finish opening high-strength concrete preformed pile one and change many centrifugal formation method pattern making procedures.
B) with above-mentioned steps a) high-strength concrete in the stake mould after molding is finished and the stake mould mix and stir material and in time be positioned over and carry out centrifugal forming on the centrifuge.
C) the opening high-strength concrete preformed pile after the moulding is carried out maintenance, the demoulding.Pile body behind the centrifugal forming in each single pile side form all has the concave curved surface that the cross section is a circular arc in nearly centrifugal axis one side, becomes a joint opening high-strength concrete preformed pile, thereby finishes the manufacturing of two joints or more piece opening high-strength concrete preformed pile simultaneously.
The 4th purpose of the present invention is to provide a kind of opening high-strength concrete preformed pile with the opening shoe, the opening high-strength concrete preformed pile of this band opening shoe helps the piling construction of opening high-strength concrete preformed pile, penetrating resistance can be reduced, the soil compaction during pile driving effect can be reduced significantly.
The opening high-strength concrete preformed pile of this band opening shoe comprises opening shoe and opening high-strength concrete preformed pile two parts composition, its split shed shoe is the member that is connected in opening high-strength concrete preformed pile stake end position, cross sectional shape is similar to the pile body cross sectional shape of opening high-strength concrete preformed pile, and opening shoe wall thickness is significantly less than relevant position opening high-strength concrete preformed pile wall thickness.
The 5th purpose of the present invention is to provide a kind of PMW to keep off native water-seal pile, the anti-bending strength that can make full use of opening high-strength concrete preformed pile is good, soil compaction effect is little and be easy to the advantage of quality control, opening high-strength concrete preformed pile can be used for bracing of foundation pit, can save the bracing of foundation pit construction costs significantly, enlarged the range of application of opening high-strength concrete preformed pile simultaneously, energy-conserving and environment-protective.
This PMW keeps off native water-seal pile and comprises a plurality of opening high-strength concrete preformed piles, and all adopts cement earth pile to connect between every adjacent two opening high-strength concrete preformed piles.
The 6th purpose of the present invention is to provide a kind of PMW to keep off the first piling construction method of native water-seal pile, and this PMW keeps off the first piling construction method of native water-seal pile can finish the construction that PMW keeps off native water-seal pile smoothly, and construction technology is simple, reliable in quality, and cost is low.
This PMW keeps off the first piling construction method of native water-seal pile and may further comprise the steps:
A) carry out opening high-strength concrete preformed pile piling construction.
B) between the adjacent opening high-strength concrete preformed pile of having constructed, carry out the high-pressure rotary-spray pile driving construction, and make high-pressure rotary jet grouting pile that adjacent opening high-strength concrete preformed pile is closely connected, thereby finish the construction that PMW keeps off native water-seal pile.
The 7th purpose of the present invention is to provide a kind of PMW to keep off piling construction method behind the native water-seal pile, the piling construction method can be finished the construction that PMW keeps off native water-seal pile smoothly after this PMW kept off native water-seal pile, construction technology is simple, reliable in quality, cost is low, and the piling construction resistance is little, can eliminate the soil compaction during pile driving effect, and environmental benefit is good.
The piling construction method may further comprise the steps after this PMW kept off native water-seal pile:
A) carry out the cement earth pile construction.
B) before cement earth pile construction after-hardening, in cement earth pile, carry out opening high-strength concrete preformed pile piling construction, keep off native water-seal pile construction thereby finish PMW.
The 8th purpose of the present invention is to provide a kind of opening high-strength concrete preformed pile antibending joint, this antibending joint can be realized the firm connection of two joint opening high-strength concrete preformed piles up and down smoothly, can also realize that opening high-strength concrete preformed pile firmly is connected with other members in vertical pile body direction, and can provide very big anti-bending bearing capacity after connecting, reliable in quality, cost is low.
This antibending joint comprises end plate, frange plate, prestress wire three parts composition, and prestress wire passes end plate and is connected with end plate, and frange plate is connected with end plate and is vertical with end plate.
Opening high-strength concrete preformed pile and stake mould thereof, the more existing precast unit of centrifugal formation method are compared, adopt the centrifugal process moulding, can reach the high strength of C60 to C80 by high temperature, high-pressure curing, system stake speed is fast, system stake floor space is little, adopt high strength steel strand to save steel, the bearing capacity of pile height, the pile body sectional area is little, compares with existing high-strength concrete pile for prestressed pipe or side's stake, the pile body cross section belongs to aperture member, the piling construction soil compaction effect is little, and the stake section modulus is big, and anti-bending strength is good, can realize centrifugal forming more piece pile body one time, shaping speed is fast.
Description of drawings
Fig. 1 be a kind of opening high-strength concrete preformed pile of the present invention and stake mould, centrifugal manufacturing method first to the 6th the opening high-strength concrete preformed pile shape and structure schematic diagram that embodiment is used;
Fig. 2 is a kind of opening high-strength concrete preformed pile of the present invention and stake mould, first embodiment of centrifugal manufacturing method and second opening high-strength concrete preformed pile tip plate configurations schematic diagram that embodiment is used;
Fig. 3 is a kind of opening high-strength concrete preformed pile of the present invention and stake mould, the used high-strength concrete groove stake cross sectional shape schematic diagram of first embodiment of centrifugal manufacturing method;
Fig. 4 is a kind of opening high-strength concrete preformed pile of the present invention and stake mould, the used high-strength concrete angle stake cross sectional shape schematic diagram of first embodiment of centrifugal manufacturing method;
Fig. 5 is the used star-like stake of the high-strength concrete cross sectional shape schematic diagram of a kind of opening high-strength concrete preformed pile of the present invention and stake mould, first embodiment of centrifugal manufacturing method thereof;
Fig. 6 is the used centrifugal legal system stake of opening high-strength concrete preformed pile of a kind of opening high-strength concrete preformed pile of the present invention and stake mould, second embodiment of centrifugal manufacturing method thereof with a stake mode structure organigram;
Fig. 7 is the opening high-strength concrete preformed pile stake point structure construction schematic diagram of the used band opening shoe of a kind of opening high-strength concrete preformed pile of the present invention and stake mould, the 3rd embodiment of centrifugal manufacturing method thereof;
Fig. 8 keeps off native water-seal pile organigram for a kind of opening high-strength concrete preformed pile of the present invention and stake mould, first kind of used PMW of the 4th embodiment of centrifugal manufacturing method;
Fig. 9 keeps off native water-seal pile organigram for a kind of opening high-strength concrete preformed pile of the present invention and stake mould, second kind of used PMW of the 5th embodiment of centrifugal manufacturing method;
Figure 10 is a kind of opening high-strength concrete preformed pile of the present invention and stake mould, the 6th used antibending joint organigram of embodiment of centrifugal manufacturing method.
The specific embodiment
As of the present invention as Fig. 1 to first embodiment shown in Figure 5, main purpose is to introduce the shape structure of opening high-strength concrete preformed pile.As shown in Figure 1, opening high-strength concrete preformed pile of the present invention comprises prestress wire (1), bonds the prefabricated pile body of high-strength concrete (2) in prestress wire (1) outside, in the present embodiment, the cross section that exists as shown in Figure 1 side to have centrifugal forming in the side surface of the prefabricated pile body of high-strength concrete (2) is the concave curved surface (3) of circular arc.Opening high-strength concrete preformed pile cross sectional shape shown in Figure 1 is the stake of high-strength concrete H type for approximate H shape.The two ends of the high-strength concrete H type stake of Jie Shaoing can be provided with end plate (4) as shown in Figure 2 in the present embodiment, the steel plate manufacturing that end plate (4) can be thick 20mm forms, on end plate (4), end plate bore is set, end plate bore comprises that as shown in Figure 2 pierce into hole (6) and anchor hole two parts form, wherein anchor hole comprises as shown in Figure 2 outer hole (5) and endoporus (7) two parts composition, the diameter in outer hole (5) is greater than endoporus (7), it is more shallow that outer hole (5) is enclosed within the outside and outer hole (5) degree of depth of endoporus (7), do not penetrate end plate (4), pierce into hole (6) and pass through end plate (4) with endoporus (7), the diameter that pierces into hole (6) is greater than endoporus (7) diameter, when prestressed steel strand (1), at first pier nose is carried out at the two ends of prestress wire (1), two ends at prestress wire (1) form the big truncated cone-shaped in end, that then the two ends of prestress wire (1) are pierced into two end plates (4) respectively pierces into hole (6), then prestress wire (1) is slided into endoporus (7), the slightly larger in diameter that makes endoporus (7) during design is in the diameter of prestress wire (1) and less than pier nose place, prestress wire (1) end diameter, therefore endoporus (7) can block prestress wire (1), pierce into end plate (4) as shown in Figure 2 at the two ends of as shown in Figure 1 prestress wire (1), can apply prestressing force to prestress wire (1) by stretch-draw end plate (4), finish the installation of prestress wire (1).When the cross sectional shape of the prefabricated pile body of high-strength concrete (2) such as Fig. 2 is the stake of high-strength concrete H type, as the cross sectional shape of the prefabricated pile body of high-strength concrete (2) as shown in Figure 3, it then is high-strength concrete groove of the present invention stake, as the cross sectional shape of the prefabricated pile body of high-strength concrete (2) as shown in Figure 4, it then is high-strength concrete of the present invention angle stake, as the cross sectional shape of the prefabricated pile body of high-strength concrete (2) as shown in Figure 5, it then is the star-like stake of high-strength concrete of the present invention, as the prefabricated pile body of high-strength concrete (2) is semi-cylindrical shaped, then is the stake of high-strength concrete opening cylinder.
As Fig. 1, Fig. 2 and second embodiment shown in Figure 6, main purpose is to introduce the centrifugal legal system stake of opening high-strength concrete preformed pile structure construction and many centrifugal formation methods of opening high-strength concrete preformed pile one commentaries on classics with the stake mould as of the present invention.As shown in Figure 6, the centrifugal legal system stake of opening high-strength concrete preformed pile of the present invention comprises single pile side form and centrifugal connector (10) two parts composition with the stake mould.Wherein the single pile side form comprises side template (8) and side template connector (9) two parts composition, side template (8) is for being connected to the member of a side surface sealing as shown in Figure 6, two single pile side forms about having comprised by side template connector (9) in Fig. 6.Each single pile side form comprises four side templates (8) up and down in the present embodiment, wherein the inboard of two side form versions (8) is the plane up and down, about a side template (8) inboard in two side templates (8) be the plane, the inboard of another piece side template (8) is the arc surface shape to the inboard depression of single pile side form as shown in Figure 6, and side template (8) can adopt steel plate or ribbed steel to make.In the present embodiment, provide two kinds of side template connectors (9) as shown in Figure 6, a kind of for moveable hinge connects, another kind is that bolt connects.Can use side template connector (9) to realize the operation of preformed pile system mould and form removal according to form shown in Figure 6.In the present embodiment, centrifugal connector (10) is connected with two single pile side forms and can carries out around its centrifugal axis (11) rotation, the external surface of centrifugal connector (10) has circular device as shown in Figure 6, the position of the centrifugal axis (11) of centrifugal connector (10) as shown in Figure 6, between two single pile side forms.Before in the single pile side form, inserting high-strength concrete and mixing and stirring material, put into the single pile side form after will having the steel strand tension of end plate (4) as shown in Figure 2, and utilize the two ends of end plate (4) shutoff single pile side form.Then the stake mould is placed and carry out centrifugal forming on the centrifuge, after the high-strength concrete of loading in the single pile side form mixes and stirs the material centrifugal forming, under the action of the centrifugal, can form between two single pile side forms with centrifugal axis (11) is the concave curved surface (3) of the circular arc of central axis, in every single pile side form just moulding as shown in Figure 1 opening high-strength concrete preformed pile of one joint.Just finish the manufacturing of opening high-strength concrete preformed pile after the moulding by maintenance, form removal.
As Fig. 1, the 3rd embodiment shown in Figure 7, main purpose is to introduce the opening high-strength concrete preformed pile structure construction of band opening shoe as of the present invention.Be example with opening high-strength concrete preformed pile shown in Figure 1 in the present embodiment, introduce the opening high-strength concrete preformed pile structure construction of band opening shoe.The opening high-strength concrete preformed pile of band opening shoe comprises opening high-strength concrete preformed pile and the composition of opening shoe (12) two parts as shown in Figure 7 as shown in Figure 1, opening shoe (12) can be welded on the end plate (4), can adopt as shown in Figure 7 H shaped steel as opening shoe (12) in the present embodiment, as need control piling soil compaction effect, then two edges of a wing up and down of opening shoe (12) can be placed near two surfaces up and down of end plate (4), the length of opening shoe (12) can be taken as the height or the approaching with it numerical value of end plate (4).When piling construction, because opening shoe (12) is in the pile body bottom, therefore the soil body is cut in opening shoe (12) earlier, in pile driving process, soil compaction can be extruded between opening shoe (12) two frange plates (14), thereby can control the soil compaction direction, effectively reduce the soil compaction during pile driving effect, and can reduce penetrating resistance.For the opening high-strength concrete preformed pile of other cross sectional shapes, can adopt the section steel manufacture opening shoe (12) of analogous shape.
As Fig. 1, the 4th embodiment shown in Figure 8, main purpose is to introduce PMW and keeps off native water-seal pile structure and first piling construction method thereof as of the present invention.PMW keeps off native water-seal pile and adopts as shown in Figure 1 the prefabricated pile body of opening high-strength concrete (2) and as shown in Figure 8 cement earth pile (13) according to the layout of carrying out shown in Figure 8 in the present embodiment, between the adjacent prefabricated pile body of opening high-strength concrete (2), connect, thereby reach the native sealing purpose of retaining with cement earth pile (13).In the present embodiment, adopt PMW to keep off the first piling construction method of native water-seal pile and finish construction, promptly carry out the pressing pile construction of the prefabricated pile body of opening high-strength concrete (2) earlier, then the cement earth pile (13) that the construction high-pressure rotary jet grouting pile connects as sealing between adjacent two prefabricated pile bodies of opening high-strength concrete (2).
As Fig. 1, the 5th embodiment shown in Figure 9, main purpose is to introduce PMW and keeps off piling construction method behind the native water-seal pile as of the present invention.PMW keeps off native water-seal pile and adopts as shown in Figure 1 the prefabricated pile body of opening high-strength concrete (2) and as shown in Figure 9 cement earth pile (13) according to the layout of carrying out shown in Figure 9 in the present embodiment, and the deep-mixed pile that adopts overlap joint mutually is as cement earth pile (13).In the present embodiment, the piling construction method is finished construction after adopting PMW to keep off native water-seal pile, promptly carry out Deep Mixing Piles Construction earlier, form cement earth pile (13) as shown in Figure 9, before cement earth pile (13) construction after coagulation, in cement earth pile (13), carry out the pressing pile construction of the prefabricated pile body of opening high-strength concrete (2), thereby the PMW that finishes present embodiment keeps off native water-seal pile construction.
As Fig. 1, the 6th embodiment shown in Figure 10, main purpose is to introduce the structure construction of opening high-strength concrete preformed pile antibending joint as of the present invention.Be example with opening high-strength concrete preformed pile shown in Figure 1 in the present embodiment, introduce the structure construction of antibending joint.As shown in figure 10, antibending joint comprises end plate (4), frange plate (14), prestress wire (1) three part composition, wherein prestress wire (1) passes end plate (4) and is connected with end plate (4), frange plate (14) is connected with end plate (4) and is vertical with end plate (4), when pile extension, by the end plate (4) and the firmly connection of frange plate (14) of two joint pile antibending joints up and down, just can increase substantially the anti-bending bearing capacity of joint location.Antibending joint as above also can be set in pile cutoff, be convenient to other members and firmly be connected with opening high-strength concrete preformed pile.
This patent includes but not limited to other job practicess of the alternative use of professional person in this area.
Claims (14)
1. opening high-strength concrete preformed pile, it is characterized in that this opening high-strength concrete preformed pile comprises prestress wire (1), bonds the prefabricated pile body of high-strength concrete (2) in prestress wire (1) outside, and the cross section that has a side to have centrifugal forming is the concave curved surface (3) of circular arc in the prefabricated pile body of high-strength concrete (2) side.
2. opening high-strength concrete preformed pile according to claim 1, it is characterized in that can be at the prefabricated pile body of above-mentioned high-strength concrete (2) but two ends are provided with stretch-draw prestressing force steel strand (1) and the end plate (4) consistent with the prefabricated pile body of high-strength concrete (2) cross sectional shape, end plate is provided with end plate bore on (4), end plate bore comprises that pierce into hole (6) and anchor hole two parts of communicating form, wherein anchor hole is made up of with endoporus (7) two parts the outer hole (5) of mutual perforation, the diameter in outer hole (5) pierces into endoporus (7) diameter of the diameter in hole (6) greater than anchor hole greater than endoporus (7).
3. opening high-strength concrete preformed pile according to claim 1, it is characterized in that the prefabricated pile body of above-mentioned high-strength concrete (2) side comprises four sides, wherein two sides are that plane and opposing parallel are arranged, two other side is that the side and the opposing parallel of groove shaped arranged, the cross section that has the side of a groove shaped to have centrifugal forming in the side of two groove shaped is the concave curved surface (3) of circular arc, and the prefabricated pile body of high-strength concrete (2) cross sectional shape is similar to the H font.
4. opening high-strength concrete preformed pile according to claim 1, it is characterized in that the prefabricated pile body of above-mentioned high-strength concrete (2) side comprises four sides, wherein two sides are that plane and opposing parallel are arranged, two other opposing parallel arranges that the cross section that the cross section that a side is arranged in side comprises a centrifugal forming is the concave curved surface (3) of circular arc, and the prefabricated pile body of high-strength concrete (2) cross sectional shape is similar to flute profile.
5. opening high-strength concrete preformed pile according to claim 1 is characterized in that the prefabricated pile body of above-mentioned high-strength concrete (2) is a semi-cylindrical shaped.
6. opening high-strength concrete preformed pile according to claim 1, it is characterized in that the prefabricated pile body of above-mentioned high-strength concrete comprises a plurality of side surfaces, comprising one in each side surface, the cross section is arranged is the concave surface of circular arc, and the cross section that comprises a centrifugal forming in the side surface is arranged is the concave curved surface (3) of circular arc.
7. opening high-strength concrete preformed pile according to claim 1, it is characterized in that the prefabricated pile body of above-mentioned high-strength concrete (2) comprises three side surfaces, wherein two side surfaces are the plane, and the cross section that the 3rd side surface middle part comprises a centrifugal forming is the concave curved surface (3) of circular arc.
8. the centrifugal legal system stake of an opening high-strength concrete preformed pile is with a stake mould, it is characterized in that the centrifugal legal system stake of this opening high-strength concrete preformed pile comprises single pile side form and centrifugal connector (10) two parts composition with the stake mould, wherein the single pile side form comprises side template (8) and side template connector (9) two parts composition, side template (8) is for being connected to the member of a side surface sealing by side template connector (9), side template connector (9) is for tightening or loosening each side template (8) to realize the interface unit of high-strength concrete prefabricated pile body (2) molding and form removal, centrifugal connector (10) is for being connected with single or multiple single pile side forms and can carrying out rotating around its centrifugal axis (11) and external surface has the member of circular device, and the centrifugal axis (11) of centrifugal connector (10) is positioned at the outside of the prefabricated pile body of high-strength concrete (2) behind centrifugal forming.
9. an opening high-strength concrete preformed pile one changes many centrifugal formation methods, it is characterized in that this opening high-strength concrete preformed pile one changes many centrifugal formation methods and may further comprise the steps:
Prestressed steel strand (1), in the single pile side form, insert high-strength concrete and mix and stir material, seal the single pile side form, and two covers or the above single pile side form of two covers are linked to each other with centrifugal connector (10), finish opening high-strength concrete preformed pile one and change many centrifugal formation method pattern making procedures.
B) with above-mentioned steps a) high-strength concrete in the stake mould after molding is finished and the stake mould mix and stir material and in time be positioned over and carry out centrifugal forming on the centrifuge.
C) the opening high-strength concrete preformed pile after the moulding is carried out maintenance, the demoulding.
10. opening high-strength concrete preformed pile with the opening shoe, the opening high-strength concrete preformed pile that it is characterized in that this band opening shoe comprises opening shoe (12) and opening high-strength concrete preformed pile two parts composition, its split shed shoe (12) is for being connected in the member of opening high-strength concrete preformed pile stake end position, cross sectional shape is similar to the pile body cross sectional shape of opening high-strength concrete preformed pile, and opening shoe (12) wall thickness is significantly less than relevant position opening high-strength concrete preformed pile wall thickness.
11. a PMW keeps off native water-seal pile, it is characterized in that this PMW keeps off native water-seal pile and comprises a plurality of opening high-strength concrete preformed piles, and all adopts cement earth pile (13) to connect between every adjacent two opening high-strength concrete preformed piles.
12. a PMW keeps off the first piling construction method of native water-seal pile, it is characterized in that this PMW keeps off the first piling construction method of native water-seal pile and may further comprise the steps:
A) carry out opening high-strength concrete preformed pile piling construction.
B) between the adjacent opening high-strength concrete preformed pile of having constructed, carry out the high-pressure rotary-spray pile driving construction, and make high-pressure rotary jet grouting pile that adjacent opening high-strength concrete preformed pile is closely connected, thereby finish the construction that PMW keeps off native water-seal pile.
13. a PMW keeps off piling construction method behind the native water-seal pile, it is characterized in that this PMW keep off native water-seal pile after the piling construction method may further comprise the steps:
A) carry out cement earth pile (13) construction.
B) before cement earth pile (13) construction after-hardening, in cement earth pile (13), carry out opening high-strength concrete preformed pile piling construction, keep off native water-seal pile construction thereby finish PMW.
14. opening high-strength concrete preformed pile antibending joint, it is characterized in that this antibending joint comprises end plate (4), frange plate (14), prestress wire (1) three part composition, prestress wire (1) passes end plate (4) and is connected with end plate (4), and frange plate (14) is connected with end plate (4) and is vertical with end plate (4).
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| CN2010101842583A CN102261065A (en) | 2010-05-25 | 2010-05-25 | Opened high-strength concrete prefabricated pile, and pile mould and centrifugal manufacturing method thereof |
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