CN102191772A - Prefabricated reaming pile and construction method thereof - Google Patents
Prefabricated reaming pile and construction method thereof Download PDFInfo
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- CN102191772A CN102191772A CN2010101154437A CN201010115443A CN102191772A CN 102191772 A CN102191772 A CN 102191772A CN 2010101154437 A CN2010101154437 A CN 2010101154437A CN 201010115443 A CN201010115443 A CN 201010115443A CN 102191772 A CN102191772 A CN 102191772A
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Abstract
The invention relates to a prefabricated reaming pile and a construction method thereof in the field of civil engineering. The prefabricated reaming pile comprises four parts, such as a prefabricated pile body (1), a reaming support (2), a reaming pile petal (3) and a temporary fixing device (4). The invention also provides a prefabricated reaming pile provided with a bottom supporting device, a tension type prefabricated reaming pile, a post-grouted prefabricated reaming pile provided with a tubular grouting passageway (6) and other series prefabricated piles, and further provides the construction method for the fabricated reaming piles; and various practical members related to the prefabricated reaming piles are designed. In the invention, the construction purpose of reaming is realized by using the prefabricated piles in a simple manner, the bearing force of the prefabricated piles can be greatly improved, the production cost of a pile foundation project can be greatly saved, and gaps at home and abroad in the field are filled; moreover, the prefabricated reaming pile has the advantages of convenience for construction and reliable quality.
Description
Technical field
The present invention relates to field of civil engineering.
Background technology
Pile foundation engineering is one of important component part in the field of civil engineering, engineering piles form commonly used at present mainly contains preformed pile and castinplace pile two big classifications, wherein preformed pile comprises forms such as steel pipe pile, precast square pile, PHC pile tube, pre-stress hollow square pile, be characterized in the prefabricated shaping postposition of engineering piles is gone into the soil body, utilize the stake and the acting in conjunction of soil that resistance to compression, resistance to plucking, bending resistance or horizontal bearing capacity are provided.Castinplace pile comprises forms such as bored pile, tube-sinking cast-in-situ pile, is characterized at first preexisting hole in geotechnical body, pours into the material of body of a pile pile then.Because of stake point bearing stratum or part stake side soil layer intensity height, in all kinds of castinplace piles, can improve bearing capacity of pile foundation with soil body contact surface by enlarging the stake end, for example ring stake, limb disc expanded bore pile all belong to the reaming stake of this type of character.Compare with castinplace pile, preformed pile is the PHC pile tube particularly, has advantages such as speed of application is fast, cost is low, strength of the mixing pile is high, and construction quality is easy to control, is widely used in each field of civil engineering at present.But present preformed pile pile body shape before inserting the soil body determines that therefore the preformed pile counter-boring techniques is still a blank both domestic and external at present.
The content of invention
First purpose of the present invention is to provide a kind of prefabricated reaming stake, and this prefabricated reaming stake can form the reaming section when construction, can increase substantially bearing capacity of pile foundation, saves the pile foundation engineering cost significantly, easy construction, reliable in quality.
The reaming bearing that this prefabricated reaming stake comprises precast pile, be connected with precast pile, be connected and can be used for fixing during piling construction the temporary fastening device four parts composition of reaming stake lobe with the reaming bearing with respect to the reaming stake lobe of reaming bearing activity, before the reaming construction.
Second purpose of the present invention is to provide a kind of prefabricated reaming stake with the collet device, the prefabricated reaming stake of this band collet device not only can form the reaming section when construction, and can make the reaming section that anti-pulling capacity is provided, the shape of fixedly reaming section after reaming, shorten the reaming stage pile sinking degree of depth, can further improve bearing capacity of pile foundation, save the pile foundation engineering cost significantly, it is more convenient to construct, reliable in quality.
The reaming bearing that the prefabricated reaming stake of this band collet device comprises precast pile, be connected with precast pile, the temporary fastening device, the bottom that are connected and can be used for fixing during piling construction with respect to the reaming stake lobe of reaming bearing activity, before the reaming construction reaming stake lobe with the reaming bearing are positioned at reaming stake lobe bottom and collet device five parts moving up and down composition.
The 3rd purpose of the present invention is to provide a kind of stretch-type prefabricated reaming stake, the prefabricated reaming stake of this stretch-type can be carried out the reaming construction by the stretch-draw of drag-line, can make the reaming section that anti-pulling capacity is provided, the shape of fixedly reaming section after reaming, shorten the reaming stage pile sinking degree of depth, can further improve bearing capacity of pile foundation, make preformed pile reaming construction more convenient, reliable in quality.
The reaming bearing that the prefabricated reaming stake of this stretch-type comprises precast pile, be connected with precast pile, be connected with the reaming bearing and can form with respect to the reaming stake lobe of reaming bearing activity, drag-line four parts that are connected with reaming stake lobe.
The 4th purpose of the present invention is to provide a kind of prefabricated reaming stake of grouting behind shaft or drift lining, the prefabricated reaming stake of this grouting behind shaft or drift lining not only can form the reaming section when construction, and can after reaming, pass through the closely knit and reinforcing reaming section soil body of grouting behind shaft or drift lining, further improve the bearing capacity of prefabricated reaming stake.
The reaming bearing that the prefabricated reaming stake of this grouting behind shaft or drift lining comprises precast pile, be connected with precast pile, the tubulose slip casting passage five parts composition that is connected with the reaming bearing and can is used for fixing the temporary fastening device of reaming stake lobe or the drag-line that is connected with reaming stake lobe during piling construction with respect to the reaming stake lobe of reaming bearing activity, before the reaming construction, leads to the reaming section.
The 5th purpose of the present invention is to provide a kind of prefabricated reaming pile construction method, and this prefabricated reaming pile construction method can be realized the reaming construction purpose of prefabricated reaming stake smoothly, improves the preformed pile bearing capacity.
This prefabricated reaming pile construction method may further comprise the steps:
A) with the reaming bearing and on connector be connected with precast pile;
B) carry out piling construction;
C) after reaching desired depth, prefabricated reaming stake make reaming stake lobe open the insertion soil body.
The 6th purpose of the present invention is to provide a kind of prefabricated reaming pile construction method of grouting behind shaft or drift lining, the prefabricated reaming pile construction method of this grouting behind shaft or drift lining can be realized the prefabricated reaming pile driving construction of grouting behind shaft or drift lining smoothly, when enlarging pile cutoff, reinforce the soil body of reaming section, further improve the preformed pile bearing capacity.
The prefabricated reaming pile construction method of this grouting behind shaft or drift lining may further comprise the steps:
A) with the reaming bearing and on connector be connected with precast pile;
B) carry out piling construction;
C) after prefabricated reaming stake reaches desired depth, make reaming stake lobe open the insertion soil body, finish the reaming construction;
D) by tubulose slip casting passage the reaming section is carried out mortar depositing construction.
The 7th purpose of the present invention is to provide a kind of callable prefabricated reaming pile construction method, this callable prefabricated reaming pile construction method can be realized the recovery construction of prefabricated reaming stake smoothly, when improving bearing capacity, realize the recovery of prefabricated reaming stake, the employing level promptly can be used as callable anchor pole and uses after construction, can be widely used in short-term bearing capacity engineering field is provided, it is reusable to reclaim the back, save engineering cost, economize on resources, be beneficial to environmental protection.
Callable prefabricated reaming pile construction method may further comprise the steps:
A) with the reaming bearing and on connector be connected with precast pile;
B) carry out piling construction;
C) after reaching desired depth, prefabricated reaming stake make reaming stake lobe open the insertion soil body;
D) be used to complete after, the drawing precast pile is packed up reaming stake lobe, after this continues the drawing precast pile, realizes that prefabricated reaming stake reclaims.
The 8th purpose of the present invention is to provide a kind of practicality side's stake reaming bearing of prefabricated reaming stake, this practicality side's stake reaming bearing can transmit the huge end load from reaming stake lobe, and can guarantee that piling construction carries out smoothly, realizes the construction of prefabricated reaming stake smoothly.
This practicality side's stake reaming bearing feature is to comprise the bearing edge of a wing and bearing axle two parts composition, and wherein the bearing axle is connected on the bearing edge of a wing.
The 9th purpose of the present invention is to provide a kind of practicality circle stake reaming bearing of prefabricated reaming stake, this practicality circle stake reaming bearing can with circular cross-section stake reasonable combination, transmission is from the huge end load of reaming stake lobe, and can guarantee that piling construction carries out smoothly, realizes the construction of the prefabricated reaming stake of circular cross-section smoothly.
This practicality circle stake reaming bearing feature is to comprise the bearing edge of a wing, bearing axle, circular stake lobe support slot three parts composition, wherein the bearing axle is connected on the bearing edge of a wing, circular stake lobe support slot is connected with the bearing edge of a wing, circular stake lobe support slot upper surface is shaped as the plane, and soffit is provided with the groove surface of cylindrical so.
The of the present invention ten purpose is to provide a kind of durability drag-line that is used for prefabricated reaming stake, and this durability drag-line can transmit the end load from reaming stake lobe, and has anti-corrosion function, can be prefabricated reaming stake permanent anti-pulling capacity is provided.
This durability drag-line comprises steel strand, is used for fixing the ground tackle of steel strand, anticorrosion outer tube three parts are formed, and the ground tackle that wherein is used for fixing steel strand is connected in the end of steel strand, and anticorrosion outer tube is enclosed within the outside of steel strand.
The 11 purpose of the present invention is to provide a kind of practical collet device that is used for prefabricated reaming stake, and this practical collet device that is used for prefabricated reaming stake can be realized the prefabricated reaming pile driving construction with the collet device smoothly, and is simple in structure, easy to use.
This practical collet device that is used for prefabricated reaming stake comprises steel strand and the ground tackle two parts composition that is positioned at steel strand end locking steel strand.
The 12 purpose of the present invention is to provide a kind of practical temporary fastening device that is used for prefabricated reaming stake, this practical temporary fastening device that is used for prefabricated reaming stake can guarantee that reaming stake lobe draws at pile driving process, and in the reaming work progress, be convenient to the releasing of temporary fastening device, the prefabricated reaming pile driving construction of being convenient to realize, simple in structure, easy to use, cost is low.
Flexible chain three parts that this practical temporary fastening device that is used for prefabricated reaming stake comprises the constrainer that lockhole is set, the latch that can insert lockhole, be connected with latch are formed.
The 13 purpose of the present invention is to provide a kind of practical reaming stake lobe that is used for prefabricated reaming stake, and this is used for the practical reaming stake lobe of prefabricated reaming stake, can be easy to reaming in prefabricated reaming pile driving construction process, the reliability height, and simple in structure, cost is low.
The end that this practical reaming stake lobe feature that is used for prefabricated reaming stake is this practicality reaming stake lobe is provided with circular hole, and the other end is a wedge shape, and is provided with groove in that a round-meshed end is set.
The 14 purpose of the present invention is to provide a kind of stake top anchor device that is used for prefabricated reaming stake, this stake top anchor device that is used for prefabricated reaming stake can make full use of the feature of prefabricated reaming stake, can easily prefabricated reaming stake be connected with sole plate or foundation platform, easy construction, quality of connection is reliable, saves engineering cost.
This top anchor device comprise anchor cable, grappling anchor cable ground tackle, be positioned under the ground tackle and can be formed by form anchor with holes three parts that ground tackle retrains, anchor cable wherein passes through form anchor.
Prefabricated reaming stake of the present invention and job practices thereof can realize utilizing preformed pile to carry out the purpose of reaming construction in easy mode, can increase substantially the preformed pile bearing capacity, save the pile foundation engineering cost significantly, easy construction, reliable in quality, it is blank both at home and abroad to have filled up this field.
Description of drawings
Fig. 1 is the used prefabricated reaming stake reaming pre-structure schematic diagram of prefabricated reaming stake of the present invention and first embodiment of job practices thereof;
Fig. 2 is a structural representation after the used prefabricated reaming stake reaming of prefabricated reaming stake of the present invention and first embodiment of job practices thereof;
Fig. 3 is the used prefabricated reaming stake reaming pre-structure schematic diagram of prefabricated reaming stake of the present invention and second embodiment of job practices thereof;
Fig. 4 is a structural representation after the used prefabricated reaming stake reaming of prefabricated reaming stake of the present invention and second embodiment of job practices thereof;
Fig. 5 is the used prefabricated reaming stake reaming pre-structure schematic diagram of prefabricated reaming stake of the present invention and the 3rd embodiment of job practices thereof;
Fig. 6 is a structural representation after the used prefabricated reaming stake reaming of prefabricated reaming stake of the present invention and the 3rd embodiment of job practices thereof;
Fig. 7 is the used prefabricated reaming stake reaming pre-structure schematic diagram of prefabricated reaming stake of the present invention and the 4th embodiment of job practices thereof;
Fig. 8 is a structural representation after the used prefabricated reaming stake reaming of prefabricated reaming stake of the present invention and the 4th embodiment of job practices thereof;
Fig. 9 is the used prefabricated reaming stake reaming pre-structure schematic diagram of prefabricated reaming stake of the present invention and the 5th embodiment of job practices thereof;
Figure 10 is a structural representation after the used prefabricated reaming stake reaming of prefabricated reaming stake of the present invention and the 5th embodiment of job practices thereof;
Figure 11 is the used prefabricated reaming stake reaming pre-structure schematic diagram of prefabricated reaming stake of the present invention and the 6th embodiment of job practices thereof;
Figure 12 is a structural representation after the used prefabricated reaming stake reaming of prefabricated reaming stake of the present invention and the 6th embodiment of job practices thereof;
Figure 13 is practicality side's stake reaming seat structure schematic diagram of the used a kind of prefabricated reaming stake of prefabricated reaming stake of the present invention and the 8th embodiment of job practices thereof;
Figure 14 is the practicality circle stake reaming seat structure schematic diagram of the used a kind of prefabricated reaming stake of prefabricated reaming stake of the present invention and the 9th embodiment of job practices thereof;
Figure 15 is a circular stake lobe support slot position generalized section in round reaming seat structure of the practicality of the used a kind of prefabricated reaming stake of prefabricated reaming stake of the present invention and the 9th embodiment of job practices thereof;
Figure 16 is prefabricated reaming stake of the present invention and the used a kind of durability stayed structure schematic diagram that is used for prefabricated reaming stake of the tenth embodiment of job practices thereof.
Figure 17 is prefabricated reaming stake of the present invention and the used a kind of practical collet apparatus structure schematic diagram that is used for prefabricated reaming stake of the 11 embodiment of job practices thereof.
Figure 18 is prefabricated reaming stake of the present invention and the used a kind of practical temporary fastening device structural representation that is used for prefabricated reaming stake of the 12 embodiment of job practices thereof.
Figure 19 is prefabricated reaming stake of the present invention and the used a kind of practical reaming stake lobe cross sectional shape schematic diagram that is used for prefabricated reaming stake of the 13 embodiment of job practices thereof.
Figure 20 is prefabricated reaming stake of the present invention and the used a kind of stake top anchor device structural representation that is used for prefabricated reaming stake of the 14 embodiment of job practices thereof.
The specific embodiment
As Fig. 1 and first embodiment shown in Figure 2, main purpose is to introduce structure construction, job practices and the reaming principle thereof of prefabricated reaming stake as of the present invention.At first introduce the structure construction of prefabricated reaming stake in the present embodiment in conjunction with Fig. 1 and Fig. 2.This prefabricated reaming stake comprises precast pile (1), reaming bearing (2), reaming stake lobe (3), temporary fastening device (4) four parts composition.Precast pile wherein (1) is mainly used in and transmits prefabricated reaming stake pile top load, and pile side resistance is provided, and can be precast square pile, PHC pile tube, pre-stress hollow square pile or steel pipe pile.Reaming bearing (2) with can become an integral body with precast pile (1) after precast pile (1) is connected, can guarantee that the reaming pile cutoff is firm with respect to precast pile (1) in the piling construction process.Reaming stake lobe (3) is connected with reaming bearing (2), the lobe of reaming stake in the present embodiment (3) flexibly connects with reaming bearing (2), reaming stake lobe (3) can be packed up as shown in Figure 1 state with respect to reaming bearing (2), and reaming stake lobe (3) also can open as shown in Figure 2 state with respect to reaming bearing (2).Before piling construction, reaming stake lobe (3) is packed up as shown in Figure 1 collapsed state with respect to reaming bearing (2), use temporary fastening device (4) that the tip of reaming stake lobe (3) is fixed with reaming bearing (2) relatively then, temporary fastening device (4) can be a hood type, promptly reaming stake lobe (3) tip is fixed on the reaming bearing (2) by forming anchor ear around one week of reaming stake lobe (3) outside, temporary fastening device (4) also can be to wear pull-typely, promptly draws two or more reaming stake lobes (3) to realize temporary fixed to reaming stake lobe (3) by wearing.Present embodiment is introduced prefabricated reaming pile construction method and reaming principle thereof with the lower part in conjunction with Fig. 1 and Fig. 2.The first step at prefabricated reaming pile construction method, reaming stake lobe (3) is packed up, with temporary fastening device (4) reaming stake lobe (3) is temporarily fixed on the reaming bearing (2), reaming stake lobe (3) can not be rotated relative to reaming bearing (2), the reaming bearing (2) that will be connected with reaming stake lobe (3) is connected with precast pile (1), connected mode can be welded to connect the precast pile (1) that is provided with firm system built-in fitting with the reaming bearing (2) that is provided with steel built-in fitting or steel, also go up default bolt at reaming bearing (2) and precast pile (1) and be connected.Finish the first step of prefabricated reaming pile construction method of the present invention, be about to reaming bearing (2) and on connector be connected with precast pile (1), enter second step of prefabricated reaming pile construction method of the present invention, the precast pile (1) that can adopt knocking in the prior art will be connected with reaming bearing (2) and upper connector thereof sinks to the soil body, also can adopt static pressure method to carry out pile sinking, finish second step of prefabricated reaming pile construction method of the present invention, enter the 3rd step of prefabricated reaming pile construction method of the present invention, after prefabricated reaming stake reaches desired depth, can make reaming stake lobe (3) open the insertion soil body by following two kinds of methods, first method can be such, when reaching desired depth, reaming bearing (2) enters hard bearing stratum, because the bearing stratum soil strength passes through the soil strength of soil layer before greater than precast pile (1), the active force that acts on the reaming stake lobe (3) also increases thereupon, by reaming stake lobe (3) as Fig. 1 and tip sphenoid shaped design shown in Figure 2, act on reaming stake lobe (3) go up soil body resistance in the horizontal direction laterally component also increase thereupon, can be by the intensity of the suitable temporary fastening device (4) of design, after reaching desired depth, act on reaming stake lobe (3) go up soil body resistance in the horizontal direction laterally component greater than the intensity of temporary fastening device (4), remove the constraint of temporary fastening device (4) to reaming stake lobe (3), afterwards, just can be by continuing pile sinking, reaming stake lobe (3) is opened the insertion soil body, treat to reach after reaming stake lobe (3) opens fully stable state as shown in Figure 2, reach prefabricated reaming stake reaming construction purpose, second method can be such, the part of temporary fastening device (4) is extended to the stake top, after pile sinking reaches desired depth, on the face of land temporary fastening device (4) is drawn back, remove the constraint of temporary fastening device (4) to reaming stake lobe (3), then by continuing pile sinking, under the effect of as shown in Figure 1 reaming stake lobe (3) tip sphenoid, go up under laterally the effect of component in the horizontal direction of soil body resistance acting on reaming stake lobe (3), reaming stake lobe (3) expansible inserts the soil body, treat to reach after reaming stake lobe (3) opens fully stable state as shown in Figure 2, finish the 3rd step of prefabricated reaming pile construction method of the present invention, thereby finish prefabricated reaming pile construction method of the present invention.
As second embodiment as shown in Figure 3 and Figure 4 of the present invention, main purpose is to introduce prefabricated reaming pilework structure, job practices and the reaming principle thereof of first kind of band collet device.At first introduce the structure construction of the prefabricated reaming stake of first kind of band collet device in the present embodiment in conjunction with Fig. 3 and Fig. 4.The prefabricated reaming stake of this first kind of band collet device comprises precast pile (1), reaming bearing (2), reaming stake lobe (3), temporary fastening device (4), collet device (5) five parts composition.Precast pile wherein (1) can be hollow pile bodies such as PHC pile tube or steel pipe pile, also can be solid pile body as shown in Figure 1, is that example is introduced with as shown in Figure 3 and Figure 4 hollow pile body in the present embodiment.For precast pile (1) is the situation of solid pile body, passes through the structure of pile center among Fig. 3 and Fig. 4 and can be close to the placement of precast pile (1) outside.In the present embodiment, the prefabricated reaming pilework structure of this first kind of band collet device is with first above-mentioned embodiment difference, on the basis of first embodiment, increased collet device (5), the bottom of this collet device (5) contacts with the bottom of reaming stake lobe (3), in the present embodiment, the top of collet device (5) reaches stake top or landscape position by the pile body of hollow, collet device (5) can move up and down, and other aspects are with first embodiment.Present embodiment is introduced the prefabricated reaming pile construction method and the reaming principle thereof of first kind of band collet device in conjunction with Fig. 3 and Fig. 4 with the lower part, the prefabricated reaming pile construction method of this first kind of band collet device is with prefabricated reaming pile construction method, the first step, with reaming bearing (2) and on connector be connected with precast pile (1), in this step, similar to first embodiment, difference is that the connector on the reaming bearing (2) has increased collet device (5), before piling construction, collet device (5) is installed according to position shown in Figure 3.Go on foot with first embodiment at second of prefabricated reaming pile construction method, finish piling construction.The 3rd of the prefabricated reaming pile construction method of Jie Shaoing the go on foot in the present embodiment, after pile sinking reaches desired depth, by at face of land drawing collet device (5), when on the relative precast pile (1) of collet device (5), pulling out, reaming stake lobe (3) side direction is opened the insertion soil body, and wash the constraint of temporary fastening device (4) open, treat to reach after reaming stake lobe (3) opens fully state as shown in Figure 4, finished the prefabricated reaming stake reaming construction of first kind of band collet of present embodiment device, thus the 3rd step of finishing prefabricated reaming pile construction method of the present invention.
As Fig. 5 and the 3rd embodiment shown in Figure 6, main purpose is to introduce prefabricated reaming pilework structure, job practices and the reaming principle thereof of second kind of band collet device as of the present invention.At first introduce the structure construction of the prefabricated reaming stake of second kind of band collet device in the present embodiment in conjunction with Fig. 5 and Fig. 6.The structure construction of the prefabricated reaming stake of second kind of band collet device of Jie Shaoing is similar to second embodiment in the present embodiment, and the difference between second embodiment is to utilize pile cutoff (7) to replace collet device (5), the bottom of holding reaming stake lobe (3) with pile cutoff (7).The prefabricated reaming pile construction method and the reaming principle thereof of second kind of band collet device are similar to first embodiment, be after pile cutoff (7) enters bearing stratum with the difference of first embodiment, the penetrating resistance of pile cutoff (7) increases, until the constraint of breaking through temporary fastening device (4), in pile driving process after this, reaming stake lobe (3) opens side direction, inserts the soil body and forms the reaming section, thereby finish the prefabricated reaming pile driving construction of second kind of band collet device.
As Fig. 7 and the 4th embodiment shown in Figure 8, main purpose is to introduce prefabricated reaming pilework structure, job practices and the reaming principle thereof of the third band collet device as of the present invention.At first introduce the structure construction that the third is with the prefabricated reaming stake of collet device in the present embodiment in conjunction with Fig. 7 and Fig. 8.The structure construction of the prefabricated reaming stake of the third band collet device of introducing in the present embodiment is similar to the 3rd embodiment, and the difference between the 3rd embodiment is that pile cutoff (7) top is provided with pyramidal structure, reaming stake lobe (3) is the sector structure of 2 or polylith center of circle portion disappearance, every reaming stake lobe (3) can side direction move horizontally under the constraint of reaming bearing (2), move to the inside when packing up at reaming stake lobe (3), stay the space in the centre, use the shifted laterally of temporary fastening device (4) restriction reaming stake lobe (3) then, the simplest way is that temporary fastening device (4) is made as hood type, be fixed around reaming stake lobe (3) outside, the awl point that will have the pile cutoff (7) of pyramidal structure then inserts in the space between each piece reaming stake lobe (3), form the prefabricated reaming stake of the third band collet device, as shown in Figure 7.The prefabricated reaming pile construction method and the reaming principle thereof of the third band collet device are similar to the 3rd embodiment, be after pile cutoff (7) enters bearing stratum with the difference of the 3rd embodiment, the penetrating resistance of pile cutoff (7) increases, until the constraint of breaking through temporary fastening device (4), in pile driving process after this, reaming stake lobe (3) inserts lateral sliding the soil body and forms the reaming section, thereby finishes the prefabricated reaming pile driving construction of the third band collet device.
As Fig. 9 and the 5th embodiment shown in Figure 10, main purpose is to introduce structure construction, job practices and the reaming principle thereof of the prefabricated reaming stake of a kind of stretch-type as of the present invention.At first introduce the structure construction of the prefabricated reaming stake of stretch-type in the present embodiment in conjunction with Fig. 9 and Figure 10.The prefabricated reaming stake of this stretch-type comprises precast pile (1), reaming bearing (2), reaming stake lobe (3), drag-line (8) four parts composition.Difference is with respect to first embodiment between the structure construction of the prefabricated reaming stake of this stretch-type, reaming principle and job practices and first embodiment, saved temporary fastening device (4), increased drag-line (8), drag-line (8) is connected with reaming stake lobe (3), and has changed the shape of reaming stake lobe (3) tip.The change of the shape of reaming stake lobe (3) tip by as shown in Figure 9, can be at pile driving process, make reaming stake lobe (3) draw close reaming bearing (2) and do not open the insertion soil body, after pile sinking reaches desired depth, move the insertion soil body by making outside reaming stake lobe (3) side direction, continue the reaming construction that pile sinking just can be finished prefabricated reaming stake then at face of land drawing drag-line (8).After the reaming construction is finished, can also make the reaming section of the prefabricated reaming stake of this stretch-type that the resistance to plucking end resistance can be provided at stake top stay guy (8).Other are with first embodiment.
As Figure 11 and the 6th embodiment shown in Figure 12, main purpose is to introduce a kind of structure construction, job practices and reaming principle thereof of prefabricated reaming stake of grouting behind shaft or drift lining as of the present invention.At first introduce the structure construction of the prefabricated reaming stake of grouting behind shaft or drift lining in the present embodiment in conjunction with Figure 11 and Figure 12.The prefabricated reaming stake of this grouting behind shaft or drift lining comprises precast pile (1), reaming bearing (2), reaming stake lobe (3), temporary fastening device (4) or drag-line (8), slip casting passage (6) five parts composition, the structure construction of precast pile wherein (1), reaming bearing (2), reaming stake lobe (3), temporary fastening device (4) or drag-line (8) is with first to the 5th embodiment, increased slip casting passage (6) in the present embodiment, slip casting passage (6) is a tubular structure, one end leads to the reaming section, the other end leads to the face of land, is mainly used in the reaming section is carried out mortar depositing construction.Prefabricated reaming pile construction method for the grouting behind shaft or drift lining of introducing in the present embodiment, three steps of the first step to the are with reference to five embodiment of first embodiment to the, the soil body is sunk in the prefabricated reaming stake of grouting behind shaft or drift lining, and finish reaming and construct, difference is slip casting passage (6) is sunk to the soil body with pile body, the 4th step in the present embodiment, by slip casting passage (6) the reaming section is carried out mortar depositing construction, promptly finished the prefabricated reaming pile driving construction of grouting behind shaft or drift lining.
As the 7th embodiment of the present invention, mainly in order to introduce a kind of callable prefabricated reaming pile construction method.In three steps of the first step to the in this callable prefabricated reaming pile construction method, can finish the construction of prefabricated reaming stake with reference to five embodiment of first embodiment to the of the present invention.After prefabricated reaming pile driving construction is finished, enter the operating period of prefabricated reaming stake, can utilize prefabricated reaming stake of the present invention that resistance to compression or anti-pulling capacity are provided, for the part engineering, pile foundation load test auxiliary pile for example, the anchor pole that uses in the bracing of foundation pit engineering, after the operating period finishes, pile body just no longer plays a role, in the 4th step of callable prefabricated reaming pile construction method, for the prefabricated reaming stake of introducing among first embodiment and the 3rd embodiment, direct drawing precast pile (1) is in the process of pulling out on precast pile (1), under the effect of soil body lateral pressure, reaming stake lobe (3) will draw in, after this continue drawing precast pile (1), just can under the situation of removing reaming pile cutoff end resistance, extract prefabricated reaming stake, realize the recovery construction of prefabricated reaming stake.For the prefabricated reaming stake of first kind of band collet device introducing among second embodiment, at drawing precast pile (1) before, remove the constraint to collet device (5) in position, stake top, drawing precast pile (1) can realize reclaiming construction then.For the prefabricated reaming stake of introducing among the 5th embodiment of stretch-type, at drawing precast pile (1) before, remove the constraint to drag-line (8) in position, stake top, drawing precast pile (1) can realize reclaiming construction then.Thereby can finish callable prefabricated reaming pile driving construction by said method.
As the 8th embodiment as shown in figure 13 of the present invention, mainly in order to introduce a kind of practicality side's stake reaming seat structure structure and using method thereof of prefabricated reaming stake.The reaming of the practicality side of a kind of prefabricated reaming stake of Jie Shaoing stake in the present embodiment bearing mainly comprises the bearing edge of a wing (9) and bearing axle (10) two parts composition, wherein bearing axle (10) is connected on the bearing edge of a wing (9), the bearing edge of a wing (9) can be made as steel work, before use, direct and the precast square pile end built-in fitting welding with the bearing edge of a wing (9), by bearing axle (10) reaming stake lobe (3) as shown in Figure 1 is connected on the bearing edge of a wing (9) during use, under the effect of bearing axle (10), reaming stake lobe (3) can rotate relative to the bearing edge of a wing (9), thereby finishes the installation of practicality side's stake reaming bearing in the present embodiment.
As of the present invention as Figure 14, the 9th embodiment shown in Figure 15, mainly in order to introduce a kind of a practicality circle stake reaming seat structure structure and a using method thereof of prefabricated reaming stake.The round stake of this practicality reaming bearing comprises the bearing edge of a wing (9), bearing axle (10) and circular stake lobe support slot (11) three parts composition, wherein bearing axle (10) is connected on the bearing edge of a wing (9), circular stake lobe support slot (11) is connected with the bearing edge of a wing (9), circular stake lobe support slot (11) upper surface is shaped as the plane, and soffit is provided with columniform groove surface.In the present embodiment, adopt the PHC pile tube as precast pile (1), before use, the bearing edge of a wing (9) directly can be welded with the PHC pile end board, and with circle stake lobe support slot (11) upper surface and the welding of PHC pile end board, by bearing axle (10) reaming stake lobe (3) as shown in figure 11 is connected on the bearing edge of a wing (9), under the effect of bearing axle (10), reaming stake lobe (3) can rotate relative to the bearing edge of a wing (9), in the present embodiment, the outside of reaming stake lobe (3) can be cylindrical, be consistent with the profile of PHC pile tube, after reaming stake lobe (3) reaming is finished, can rotate in the semi-cylindrical groove of circular stake lobe support slot (11), because of the outside of reaming stake lobe (3) can be set to identical cross sectional shape and size with the soffit of circular stake lobe support slot (11), so reaming stake lobe (3) is bigger with circular stake lobe support slot (11) contact surface, thereby can transmit huge end load from reaming stake lobe (3) by the circle of the practicality in present embodiment stake reaming bearing.
As the tenth embodiment as shown in figure 16 of the present invention, mainly in order to introduce a kind of durability stayed structure structure and using method thereof that is used for prefabricated reaming stake.This durability drag-line that is used for prefabricated reaming stake comprises steel strand (12), is used for fixing the ground tackle (14) of steel strand (12), anticorrosion outer tube (13) three parts are formed, the ground tackle (14) that wherein is used for fixing steel strand (12) is connected in the end of steel strand (12), and anticorrosion outer tube (13) is enclosed within the outside of steel strand (12).In use, can in reaming stake lobe (3) as shown in Figure 9, a hole be set, the steel strand (12) that make the outside be with anticorrosion outer tube (13) pass through this hole and extend to the stake top, end at nearly reaming stake lobe (3) is fixed in steel strand (12) on the reaming stake lobe (3) with ground tackle (14), in the present embodiment, steel strand (12), anticorrosion outer tube (13) have just been formed the drag-line among Fig. 9 (8) with ground tackle (14).Anticorrosion outer tube (13) can be the durability plastic production, and anticorrosion outer tube (13) can separate the steel strand (12) and the soil body, thereby reaches the purpose of protection steel strand (12), makes steel strand (12) can bear load lastingly.In the present embodiment, anticorrosion outer tube (13) can be made as flexible structure, be convenient to install.
As the 11 embodiment as shown in figure 17 of the present invention, main in order to introduce a kind of practical collet device that is used for prefabricated reaming stake.This practical collet device that is used for prefabricated reaming stake comprises steel strand (12) and ground tackle (14) two parts composition that is positioned at steel strand (12) end locking steel strand (12).As Fig. 3 and shown in Figure 17, by selecting the size of ground tackle (14), making ground tackle (14) can play support reaming stake lobe (3) promptly can use as collet device (5), utilize collet device (5) to transmit anti-pulling capacity as need, then can realize, reclaim collet device (5), then can select less ground tackle (14) as need by the size that increases ground tackle (14), after reaming is finished, make ground tackle (14) realize reclaiming purpose by the precast pile (1) and the mesopore of reaming bearing (2).
As the 12 embodiment as shown in figure 18 of the present invention, main in order to introduce a kind of practical temporary fastening device that is used for prefabricated reaming stake.Flexible chain (15) three parts that this practical temporary fastening device that is used for prefabricated reaming stake comprises the constrainer (17) that lockhole (18) are set, the latch (16) that can insert lockhole (18), be connected with latch (16) are formed.In use, constrainer (17) can be embedded in advance in the reaming stake lobe (3), also can be by being located at the pre-manufactured hole on the reaming stake lobe (3), constrainer (17) is installed on the reaming stake lobe (3), when reaming stake lobe (3) is installed, the placement of staggering up and down of constrainer (17) on the reaming stake lobe (3) that can two or more are staggered relatively, and the lockhole (18) on the constrainer (17) is alignd, the latch (16) that will have flexible chain (15) then inserts in the lockhole (18), flexible chain (15) passes to the face of land, under the effect of contraction of latch (16), reaming stake lobe (3) is drawn close in pile driving process relatively, when reaming is constructed, latch (16) is extracted by flexible chain (15) on the face of land earlier, just removed of the constraint of practical temporary fastening device, finished the effect of practical temporary fastening device, and can continue drawing flexible chain (15) and reclaim flexible chain (15) and latch (16) reaming stake lobe (3).
As of the present invention as Figure 11, the 13 embodiment shown in Figure 19, main in order to introduce a kind of practical reaming stake lobe that is used for prefabricated reaming stake, one end of this practicality reaming stake lobe is provided with the circular hole on as shown in Figure 11 the reaming stake lobe (3), the other end is the wedge shape on as shown in Figure 11 the reaming stake lobe (3), and in that being set, a round-meshed end is provided with as shown in figure 19 groove (19), in use, link to each other with bearing axle (10) on as shown in figure 14 the practical reaming bearing by the circular hole of reaming stake lobe (3) one ends, reaming stake lobe (3) just can be around bearing axle (10) lateral rotation, the other end of reaming stake lobe (3) is set to sphenoid as shown in figure 11, just can be under the situation of removing temporary fastening device (4) side direction open and insert the soil body and carry out the reaming construction, reaming stake lobe (3) is gone up the groove (19) that is provided with, can be when reaming stake lobe (3) be installed, make groove (19) and as shown in figure 14 the bearing edge of a wing (9) interlock mutually, be convenient to fixing with install.
As the 14 embodiment as shown in figure 20 of the present invention, mainly in order to introduce a kind of stake top anchor device that is used for prefabricated reaming stake, this top anchor device comprise anchor cable (22), grappling anchor cable (22) ground tackle (14), be positioned under the ground tackle (14) and can be formed by form anchor with holes (20) three parts of ground tackle (14) constraint, anchor cable wherein (22) passes through form anchor (20).After prefabricated reaming pile driving construction is finished, need prefabricated reaming stake is connected with sole plate or foundation platform, the stake top anchor device in the present embodiment can be fixed in sole plate or foundation platform with prefabricated reaming piled anchor easily and effectively.In the present embodiment, first kind of stake top anchor device mounting method is such, after prefabricated reaming pile driving construction is finished, as shown in figure 10 drag-line (8) or collet device (5) as shown in Figure 4 can be extended to as shown in figure 20 sole plate or the reinforcing bar (21) of foundation platform on as anchor cable (22), then form anchor (20) is positioned on the reinforcing bar (21) of sole plate or foundation platform, above-mentioned anchor cable (22) passes through from the preformed hole of form anchor (20), top at form anchor (20) is anchored to above-mentioned anchor cable (22) on the form anchor (20) with ground tackle (14), can also be connected with sole plate or foundation platform with the precast pile (1) of technology according to existing standard in case of necessity prefabricated reaming stake, build sole plate or foundation platform concrete then, promptly finished the stake top anchor device of present embodiment and installed.Second kind of stake top anchor device mounting method of Jie Shaoing is so in the present embodiment, elder generation's construction sole plate or foundation platform steel bar concrete, preformed hole when construction sole plate or foundation platform steel bar concrete, as shown in figure 10 drag-line (8) or collet device (5) are as shown in Figure 4 extended on sole plate or the foundation platform as anchor cable (22), after treating that sole plate or foundation platform concrete solidify, anchor cable (22) is as shown in figure 10 passed through form anchor (20), and with ground tackle (14) it is anchored on the form anchor (20), finish the stake top anchor device construction in the present embodiment.
This patent includes but not limited to other job practicess of the alternative use of professional person in this area.
Claims (14)
1. prefabricated reaming stake is characterized in that this prefabricated reaming stake comprises precast pile (1), the reaming bearing (2) that is connected with precast pile (1), is connected with reaming bearing (2) and reaming stake lobe (3) that can be movable with respect to reaming bearing (2), is used for fixing temporary fastening device (4) the four parts composition of reaming stake lobe (3) during piling construction before the reaming construction.
2. prefabricated reaming stake with the collet device, the prefabricated reaming stake that it is characterized in that this band collet device comprise precast pile (1), the reaming bearing (2) that is connected with precast pile (1), be connected with reaming bearing (2) and reaming stake lobe (3) that can be movable with respect to reaming bearing (2), the temporary fastening device (4), the bottom that are used for fixing reaming stake lobe (3) before the reaming construction during piling construction are positioned at reaming stake lobe (3) bottom and collet device moving up and down (5) five parts composition.
3. prefabricated reaming stake of stretch-type is characterized in that the prefabricated reaming stake of this stretch-type comprises precast pile (1), the reaming bearing (2) that is connected with precast pile (1), is connected with reaming bearing (2) and can forms with respect to the reaming stake lobe (3) of reaming bearing (2) activity, drag-line (8) four parts that are connected with reaming stake lobe (3).
4. the prefabricated reaming stake of a grouting behind shaft or drift lining, the prefabricated reaming stake that it is characterized in that this grouting behind shaft or drift lining comprise precast pile (1), the reaming bearing (2) that is connected with precast pile (1), be connected with reaming bearing (2) and reaming stake lobe (3) that can be movable with respect to reaming bearing (2), tubulose slip casting passage (6) the five parts composition that is used for fixing the temporary fastening device (4) of reaming stake lobe (3) or the drag-line (8) that is connected with reaming stake lobe (3) during piling construction before the reaming construction, leads to the reaming section.
5. prefabricated reaming pile construction method, this prefabricated reaming pile construction method may further comprise the steps:
A) with reaming bearing (2) and on connector be connected with precast pile (1);
B) carry out piling construction;
C) after reaching desired depth, prefabricated reaming stake make reaming stake lobe (3) open the insertion soil body.
6. the prefabricated reaming pile construction method of a grouting behind shaft or drift lining, the prefabricated reaming pile construction method of this grouting behind shaft or drift lining may further comprise the steps:
A) with reaming bearing (2) and on connector be connected with precast pile (1);
B) carry out piling construction;
C) after prefabricated reaming stake reaches desired depth, make reaming stake lobe (3) open the insertion soil body, finish the reaming construction;
D) by tubulose slip casting passage (6) the reaming section is carried out mortar depositing construction.
7. callable prefabricated reaming pile construction method, this callable prefabricated reaming pile construction method may further comprise the steps:
A) with reaming bearing (2) and on connector be connected with precast pile (1);
B) carry out piling construction;
C) after reaching desired depth, prefabricated reaming stake make reaming stake lobe (3) open the insertion soil body;
D) be used to complete after, drawing precast pile (1) is packed up reaming stake lobe (3), after this continues drawing precast pile (1), realizes that prefabricated reaming stake reclaims.
8. the practicality side of prefabricated reaming stake stake reaming bearing is characterized in that this practicality side's stake reaming bearing comprises the bearing edge of a wing (9) and bearing axle (10) two parts composition, and wherein bearing axle (10) is connected on the bearing edge of a wing (9).
9. stake reaming bearing is justified in the practicality of a prefabricated reaming stake, it is characterized in that this practicality circle stake reaming bearing comprises the bearing edge of a wing (9), bearing axle (10), circular stake lobe support slot (11) three parts composition, wherein bearing axle (10) is connected on the bearing edge of a wing (9), circular stake lobe support slot (11) is connected with the bearing edge of a wing (9), circular stake lobe support slot (11) upper surface is shaped as the plane, and soffit is provided with the groove surface of cylindrical so.
10. durability drag-line that is used for prefabricated reaming stake, it is characterized in that this durability drag-line comprises steel strand (12), is used for fixing the ground tackle (14) of steel strand (12), anticorrosion outer tube (13) three parts are formed, the ground tackle (14) that wherein is used for fixing steel strand (12) is connected in the end of steel strand (12), and anticorrosion outer tube (13) is enclosed within the outside of steel strand (12).
11. a practical collet device that is used for prefabricated reaming stake is characterized in that this practicality collet device comprises steel strand (12) and ground tackle (14) two parts composition that is positioned at steel strand (12) end locking steel strand (12).
12. a practical temporary fastening device that is used for prefabricated reaming stake is characterized in that this practicality temporary fastening device comprises the constrainer (17) that lockhole (18) are set, the latch (16) that can insert lockhole (18), flexible chain (15) three parts that are connected with latch (16) are formed.
13. a practical reaming stake lobe that is used for prefabricated reaming stake is characterized in that an end of this practicality reaming stake lobe is provided with circular hole, the other end is a wedge shape, and is provided with groove (19) in that a round-meshed end is set.
14. stake top anchor device that is used for prefabricated reaming stake, it is characterized in that this top anchor device comprise anchor cable (22), grappling anchor cable (22) ground tackle (14), be positioned under the ground tackle (14) and can be formed by form anchor with holes (20) three parts of ground tackle (14) constraint, anchor cable wherein (22) passes through form anchor (20).
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| CN2010101154437A CN102191772A (en) | 2010-03-01 | 2010-03-01 | Prefabricated reaming pile and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101154437A CN102191772A (en) | 2010-03-01 | 2010-03-01 | Prefabricated reaming pile and construction method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104644494A Division CN102926384A (en) | 2010-03-01 | 2010-03-01 | Prefabricated broaching pile adopting post grouting and construction method thereof |
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| CN102191772A true CN102191772A (en) | 2011-09-21 |
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| CN2010101154437A Pending CN102191772A (en) | 2010-03-01 | 2010-03-01 | Prefabricated reaming pile and construction method thereof |
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| CN103243707A (en) * | 2013-05-02 | 2013-08-14 | 陈灿斌 | Construction method for bearing capacity improving members of pile |
| CN103572756A (en) * | 2013-11-13 | 2014-02-12 | 河海大学 | Cast-in-place pile sleeve and construction method thereof |
| CN105040695A (en) * | 2015-07-17 | 2015-11-11 | 中国建筑第六工程局有限公司 | Anchor rod structure capable of integrally working and construction method |
| CN105839637A (en) * | 2016-05-23 | 2016-08-10 | 化学工业岩土工程有限公司 | Valve type enlarged footing stock supporting body |
| CN104625900B (en) * | 2013-06-16 | 2017-01-18 | 杨昌松 | Drill bit and drilling method |
| CN110061683A (en) * | 2018-01-19 | 2019-07-26 | 株洲变流技术国家工程研究中心有限公司 | A kind of anti-pulling photovoltaic bracket stake |
| CN111851971A (en) * | 2020-07-31 | 2020-10-30 | 山东鼎鲁建筑有限公司 | Climbing frame for building external wall construction |
| CN113202088A (en) * | 2021-04-27 | 2021-08-03 | 中冶南方城市建设工程技术有限公司 | Precast pile bearing capacity reinforcing device |
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Application publication date: 20110921 |