CN102926384A - Prefabricated broaching pile adopting post grouting and construction method thereof - Google Patents
Prefabricated broaching pile adopting post grouting and construction method thereof Download PDFInfo
- Publication number
- CN102926384A CN102926384A CN2012104644494A CN201210464449A CN102926384A CN 102926384 A CN102926384 A CN 102926384A CN 2012104644494 A CN2012104644494 A CN 2012104644494A CN 201210464449 A CN201210464449 A CN 201210464449A CN 102926384 A CN102926384 A CN 102926384A
- Authority
- CN
- China
- Prior art keywords
- pile
- reaming
- prefabricated
- lobe
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a prefabricated broaching pile adopting post grouting in a civil engineering field. The prefabricated broaching pile comprises five parts, i.e., a prefabricated pile body (1), a broaching support (2), a broaching pile flap (3), a temporary fixing device (4), and a tubular grouting channel (6) leading to a broaching section. The invention provides a construction method of the prefabricated broaching pile adopting the post grouting, and schemes out various practical components which are relevant to the prefabricated broaching pile. According to the prefabricated broaching pile adopting the post grouting, the purposes of broaching construction is simply realized by the prefabricated pile, so that the bearing capacity of the prefabricated pile can be greatly improved, the project cost of the pile foundation can be greatly saved, the construction is convenient, the quality is reliable, and further, the blank at home and abroad in the field is filled up.
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 pile form commonly used mainly contains preformed pile and castinplace pile two large classifications at present, wherein preformed pile comprises the 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 pile is entered the soil body, utilize 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 the forms such as bored pile, tube-sinking cast-in-situ pile, is characterized at first preexisting hole in Rock And Soil, then pours into the material of body of a pile pile.Because pile top bearing stratum or part stake side soil layer intensity are high, 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 hole-expanding pile of this type of character.Compare with castinplace pile, preformed pile is the PHC pile tube particularly, has the 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 at present each field of civil engineering.But present preformed pile pile body shape before inserting the soil body is determined, so 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 pile, and this Prefabricated reaming pile can form the reaming section when construction, can increase substantially bearing capacity of pile foundation, significantly saves the pile foundation engineering cost, easy construction, reliable in quality.
The reaming bearing that this Prefabricated reaming pile comprises precast pile, be connected with precast pile, be connected with the reaming bearing and can be used for respect to the hole-expanding pile lobe of reaming bearing activity, before the reaming construction the fixedly temporary fastening device four parts composition of hole-expanding pile lobe during piling construction.
Second purpose of the present invention is to provide a kind of Prefabricated reaming pile with bottom support device, this Prefabricated reaming pile with bottom support device not only can form the reaming section when constructing, 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, significantly save the pile foundation engineering cost, construct more convenient reliable in quality.
The reaming bearing that this Prefabricated reaming pile with bottom support device comprises precast pile, be connected with precast pile, be connected with the reaming bearing and can be with respect to the hole-expanding pile lobe of reaming bearing activity, before the reaming construction, be used for fixedly during piling construction that temporary fastening device, the bottom of hole-expanding pile lobe are positioned at hole-expanding pile lobe bottom and bottom support device moving up and down five parts composition.
The 3rd purpose of the present invention is to provide a kind of stretch-type Prefabricated reaming pile, this stretch-type Prefabricated reaming pile can carry 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 this stretch-type Prefabricated reaming pile comprises precast pile, be connected with precast pile, be connected with the reaming bearing and can form with respect to the hole-expanding pile lobe of reaming bearing activity, drag-line four parts that are connected with the hole-expanding pile lobe.
The 4th purpose of the present invention is to provide a kind of Prefabricated reaming pile of grouting behind shaft or drift lining, the Prefabricated reaming pile of this grouting behind shaft or drift lining not only can form the reaming section when construction, and can be after reaming closely knit and reinforce the reaming section soil body by grouting behind shaft or drift lining, further improve the bearing capacity of Prefabricated reaming pile.
The reaming bearing that the Prefabricated reaming pile of this grouting behind shaft or drift lining comprises precast pile, be connected with precast pile, be connected with the reaming bearing and can be used for during piling construction with respect to the hole-expanding pile lobe of reaming bearing activity, before the reaming construction fixing hole-expanding pile lobe temporary fastening device or the drag-line that is connected with the hole-expanding pile lobe, lead to the tubulose slip casting passage five parts composition of 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 pile 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 pile make the hole-expanding pile 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 pile reaches desired depth, make the hole-expanding pile 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 pile smoothly, when improving bearing capacity, realize the recovery of Prefabricated reaming pile, the employing level namely can be used as callable anchor pole use after construction, can be widely used in short-term the bearing capacity engineering field is provided, reusable after reclaiming, 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 pile make the hole-expanding pile lobe open the insertion soil body;
D) be used to complete after, the drawing precast pile is packed up the hole-expanding pile lobe, after this continues the drawing precast pile, realizes that Prefabricated reaming pile reclaims.
The 8th purpose of the present invention is to provide a kind of practical square pile reaming bearing of Prefabricated reaming pile, this practicality square pile reaming bearing can transmit the huge end load from the hole-expanding pile lobe, and can guarantee that piling construction carries out smoothly, realizes the Prefabricated reaming pile construction smoothly.
This practicality square pile reaming bearing feature is to comprise that the bearing edge of a wing and bearing axle two parts form, 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 pile, this practicality circle stake reaming bearing can with circular cross-section stake reasonable combination, transmission is from the huge end load of hole-expanding pile lobe, and can guarantee that piling construction carries out smoothly, realize smoothly circular cross-section Prefabricated reaming pile construction.
This practicality circle stake reaming bearing feature is to comprise that the bearing edge of a wing, bearing axle, circular stake lobe support slot three parts form, 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 arranges the groove surface of cylindrical.
The of the present invention ten purpose is to provide a kind of durability drag-line for Prefabricated reaming pile, and this durability drag-line can transmit the end load from the hole-expanding pile lobe, and has anti-corrosion function, can be Prefabricated reaming pile permanent anti-pulling capacity is provided.
This durability drag-line comprises steel strand, be used for fixedly that ground tackle, anticorrosion outer tube three parts of steel strand form, and wherein is connected in the end of steel strand for the fixing ground tackle 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 bottom support device for Prefabricated reaming pile, and this practical bottom support device that is used for Prefabricated reaming pile can be realized the Prefabricated reaming pile driving construction with bottom support device smoothly, and is simple in structure, easy to use.
The practical bottom support device that should be used for Prefabricated reaming pile comprises that steel strand and the ground tackle two parts that are positioned at steel strand end locking steel strand form.
The 12 purpose of the present invention is to provide a kind of practical temporary fastening device for Prefabricated reaming pile, the practical temporary fastening device that should be used for Prefabricated reaming pile can guarantee that the hole-expanding pile 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.
The practical temporary fastening device that should be used for Prefabricated reaming pile comprise the constrainer that lockhole is set, the latch that can insert lockhole, the flexible chain three parts composition that is connected with latch.
The 13 purpose of the present invention is to provide a kind of practical hole-expanding pile lobe for Prefabricated reaming pile, should be used for the practical hole-expanding pile lobe of Prefabricated reaming pile, can be easy to reaming in the Prefabricated reaming pile work progress, and reliability is high, and is simple in structure, and cost is low.
End that the practical hole-expanding pile lobe feature that should be used for Prefabricated reaming pile be this practicality hole-expanding pile lobe is provided with circular hole, and the other end is wedge shape, and is provided with groove a round-meshed end is set.
The 14 purpose of the present invention is to provide a kind of stake top anchor device for Prefabricated reaming pile, the stake top anchor device that should be used for Prefabricated reaming pile can take full advantage of the feature of Prefabricated reaming pile, can easily Prefabricated reaming pile 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 pile 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, significantly save the pile foundation engineering cost, easy construction, reliable in quality has been filled up this field blank both at home and abroad.
Description of drawings
Fig. 1 is the used Prefabricated reaming pile reaming pre-structure schematic diagram of Prefabricated reaming pile of the present invention and first embodiment of job practices thereof;
Fig. 2 is structural representation after the used Prefabricated reaming pile reaming of Prefabricated reaming pile of the present invention and first embodiment of job practices thereof;
Fig. 3 is the used Prefabricated reaming pile reaming pre-structure schematic diagram of Prefabricated reaming pile of the present invention and second embodiment of job practices thereof;
Fig. 4 is structural representation after the used Prefabricated reaming pile reaming of Prefabricated reaming pile of the present invention and second embodiment of job practices thereof;
Fig. 5 is the used Prefabricated reaming pile reaming pre-structure schematic diagram of Prefabricated reaming pile of the present invention and the 3rd embodiment of job practices thereof;
Fig. 6 is structural representation after the used Prefabricated reaming pile reaming of Prefabricated reaming pile of the present invention and the 3rd embodiment of job practices thereof;
Fig. 7 is the used Prefabricated reaming pile reaming pre-structure schematic diagram of Prefabricated reaming pile of the present invention and the 4th embodiment of job practices thereof;
Fig. 8 is structural representation after the used Prefabricated reaming pile reaming of Prefabricated reaming pile of the present invention and the 4th embodiment of job practices thereof;
Fig. 9 is the used Prefabricated reaming pile reaming pre-structure schematic diagram of Prefabricated reaming pile of the present invention and the 5th embodiment of job practices thereof;
Figure 10 is structural representation after the used Prefabricated reaming pile reaming of Prefabricated reaming pile of the present invention and the 5th embodiment of job practices thereof;
Figure 11 is the used Prefabricated reaming pile reaming pre-structure schematic diagram of Prefabricated reaming pile of the present invention and the 6th embodiment of job practices thereof;
Figure 12 is structural representation after the used Prefabricated reaming pile reaming of Prefabricated reaming pile of the present invention and the 6th embodiment of job practices thereof;
Figure 13 is the practical square pile reaming seat structure schematic diagram of Prefabricated reaming pile of the present invention and the 8th a kind of Prefabricated reaming pile that embodiment is used of job practices thereof;
Figure 14 is the practicality circle stake reaming seat structure schematic diagram of Prefabricated reaming pile of the present invention and the 9th a kind of Prefabricated reaming pile that embodiment is used of job practices thereof;
Figure 15 is circular stake lobe support slot position generalized section in round reaming seat structure of the practicality of Prefabricated reaming pile of the present invention and the 9th a kind of Prefabricated reaming pile that embodiment is used of job practices thereof;
Figure 16 is the used a kind of durability stayed structure schematic diagram for Prefabricated reaming pile of Prefabricated reaming pile of the present invention and the tenth embodiment of job practices thereof.
Figure 17 is the used a kind of practical bottom support device structural representation for Prefabricated reaming pile of Prefabricated reaming pile of the present invention and the 11 embodiment of job practices thereof.
Figure 18 is the used a kind of practical temporary fastening device structural representation for Prefabricated reaming pile of Prefabricated reaming pile of the present invention and the 12 embodiment of job practices thereof.
Figure 19 is the used a kind of practical hole-expanding pile lobe cross sectional shape schematic diagram for Prefabricated reaming pile of Prefabricated reaming pile of the present invention and the 13 embodiment of job practices thereof.
Figure 20 is the used a kind of stake top anchor device structural representation for Prefabricated reaming pile of Prefabricated reaming pile of the present invention and the 14 embodiment of job practices thereof.
The specific embodiment
Such as Fig. 1 and first embodiment shown in Figure 2, main purpose is to introduce Structural Tectonics, job practices and the reaming principle thereof of Prefabricated reaming pile as of the present invention.At first introduce in the present embodiment the Structural Tectonics of Prefabricated reaming pile in conjunction with Fig. 1 and Fig. 2.This Prefabricated reaming pile comprises that precast pile (1), reaming bearing (2), hole-expanding pile lobe (3), temporary fastening device (4) four parts form.Precast pile wherein (1) is mainly used in transmitting the Prefabricated reaming pile 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.Hole-expanding pile lobe (3) is connected with reaming bearing (2), hole-expanding pile lobe (3) is flexibly connected with reaming bearing (2) in the present embodiment, hole-expanding pile lobe (3) can be packed up as shown in Figure 1 state with respect to reaming bearing (2), and hole-expanding pile lobe (3) also can open as shown in Figure 2 state with respect to reaming bearing (2).Before piling construction, hole-expanding pile lobe (3) is packed up as shown in Figure 1 collapsed state with respect to reaming bearing (2), then use temporary fastening device (4) that the tip of hole-expanding pile lobe (3) is fixed with reaming bearing (2) relatively, temporary fastening device (4) can be hood type, namely by forming anchor ear around one week of hole-expanding pile lobe (3) outside hole-expanding pile lobe (3) tip is fixed on the reaming bearing (2), temporary fastening device (4) also can be to wear pull-typely, namely draws two or more hole-expanding pile lobes (3) to realize temporary fixed to hole-expanding pile lobe (3) by wearing.The following part of the present embodiment is introduced Prefabricated reaming pile construction method and reaming principle thereof in conjunction with Fig. 1 and Fig. 2.The first step at the Prefabricated reaming pile construction method, hole-expanding pile lobe (3) is packed up, with temporary fastening device (4) hole-expanding pile lobe (3) is temporarily fixed on the reaming bearing (2), hole-expanding pile lobe (3) can not be rotated relative to reaming bearing (2), the reaming bearing (2) that will be connected with hole-expanding pile lobe (3) is connected with precast pile (1), connected mode can be welded to connect the precast pile (1) that is provided with firm built-in fitting processed with the reaming bearing (2) that is provided with steel built-in fitting or steel, also be connected at the default bolt of reaming bearing (2) and precast pile (1).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 the 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 the 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 pile reaches desired depth, can make hole-expanding pile 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 hole-expanding pile lobe (3) also increases thereupon, by hole-expanding pile lobe (3) such as Fig. 1 and tip shown in Figure 2 sphenoid shape design, act on the upper soil body resistance of hole-expanding pile lobe (3) 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 the upper soil body resistance of hole-expanding pile lobe (3) in the horizontal direction laterally component greater than the intensity of temporary fastening device (4), remove temporary fastening device (4) to the constraint of hole-expanding pile lobe (3), afterwards, just can be by continuing pile sinking, hole-expanding pile lobe (3) is opened the insertion soil body, after opening fully, hole-expanding pile lobe (3) reaches stable state as shown in Figure 2, reach Prefabricated reaming pile 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 earth's surface temporary fastening device (4) is pulled open, remove temporary fastening device (4) to the constraint of hole-expanding pile lobe (3), then by continuing pile sinking, under the effect of as shown in Figure 1 hole-expanding pile lobe (3) tip sphenoid, acting under in the horizontal direction laterally the effect of component of the upper soil body resistance of hole-expanding pile lobe (3), hole-expanding pile lobe (3) expansible inserts the soil body, after opening fully, hole-expanding pile lobe (3) reaches 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 the Prefabricated reaming pile Structural Tectonics of the first band bottom support device, job practices and reaming principle thereof.At first introduce in the present embodiment the Structural Tectonics of the Prefabricated reaming pile of the first band bottom support device in conjunction with Fig. 3 and Fig. 4.The Prefabricated reaming pile of this first band bottom support device comprises that precast pile (1), reaming bearing (2), hole-expanding pile lobe (3), temporary fastening device (4), bottom support device (5) five parts form.Precast pile wherein (1) can be the hollow pile bodies such as PHC pile tube or steel pipe pile, also can be solid pile body as shown in Figure 1, is introduced as an example of as shown in Figure 3 and Figure 4 hollow pile body example in the present embodiment.Be the situation of solid pile body for precast pile (1), the structure of passing through pile center among Fig. 3 and Fig. 4 can be close to precast pile (1) outside and place.In the present embodiment, the Prefabricated reaming pile Structural Tectonics of this first band bottom support device and above-mentioned first embodiment difference are, increased bottom support device (5) on the basis of first embodiment, the bottom of this bottom support device (5) contacts with the bottom of hole-expanding pile lobe (3), in the present embodiment, the top of bottom support device (5) is by the pile body of hollow, reach stake top or landscape position, bottom support device (5) can move up and down, and other aspects are with first embodiment.The following part of the present embodiment is introduced Prefabricated reaming pile construction method and the reaming principle thereof of the first band bottom support device in conjunction with Fig. 3 and Fig. 4, the Prefabricated reaming pile construction method of this first band bottom support device is with the 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 bottom support device (5), before piling construction, bottom support device (5) is installed according to position shown in Figure 3.With first embodiment, finish piling construction at the second step of Prefabricated reaming pile construction method.The 3rd step of the Prefabricated reaming pile construction method of introducing in the present embodiment, after pile sinking reaches desired depth, by at earth's surface drawing bottom support device (5), when the relative precast pile (1) of bottom support device (5) pulls out, hole-expanding pile lobe (3) side direction is opened the insertion soil body, and wash the constraint of temporary fastening device (4) open, after opening fully, hole-expanding pile lobe (3) reaches state as shown in Figure 4, finished the Prefabricated reaming pile reaming construction of the present embodiment the first band bottom support device, thus the 3rd step of finishing Prefabricated reaming pile construction method of the present invention.
Such as Fig. 5 and the 3rd embodiment shown in Figure 6, main purpose is to introduce the Prefabricated reaming pile Structural Tectonics of the second band bottom support device, job practices and reaming principle thereof as of the present invention.At first introduce in the present embodiment the Structural Tectonics of the Prefabricated reaming pile of the second band bottom support device in conjunction with Fig. 5 and Fig. 6.The Structural Tectonics of the Prefabricated reaming pile of the second band bottom support device of introducing in the present embodiment is similar to second embodiment, and the difference between second embodiment is to utilize pile cutoff (7) to replace bottom support device (5), holds the bottom of hole-expanding pile lobe (3) with pile cutoff (7).Prefabricated reaming pile construction method and the reaming principle thereof of the second band bottom support 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 break through the constraint of temporary fastening device (4), in pile driving process after this, hole-expanding pile lobe (3) opens side direction, inserts the soil body and forms the reaming section, thereby finish the Prefabricated reaming pile driving construction of the second band bottom support device.
Such as Fig. 7 and the 4th embodiment shown in Figure 8, main purpose is to introduce the third Prefabricated reaming pile Structural Tectonics with bottom support device, job practices and reaming principle thereof as of the present invention.At first introduce the third with the Structural Tectonics of the Prefabricated reaming pile of bottom support device in conjunction with Fig. 7 and Fig. 8 in the present embodiment.The third Structural Tectonics with the Prefabricated reaming pile of bottom support 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 arranges pyramidal structure, hole-expanding pile lobe (3) is the sector structure of 2 or polylith center of circle section disappearance, every hole-expanding pile lobe (3) can side direction move horizontally under the constraint of reaming bearing (2), at hole-expanding pile lobe (3) to the inside during mobile packing up, stay the space in the centre, then use the shifted laterally of temporary fastening device (4) restriction hole-expanding pile lobe (3), the simplest way is that temporary fastening device (4) is made as hood type, be fixed around hole-expanding pile lobe (3) outside, then will insert with the cone point of the pile cutoff (7) of pyramidal structure in the space between each piece hole-expanding pile lobe (3), form the third with the Prefabricated reaming pile of bottom support device, as shown in Figure 7.The third Prefabricated reaming pile construction method and reaming principle thereof with bottom support device is 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 break through the constraint of temporary fastening device (4), in pile driving process after this, hole-expanding pile lobe (3) inserts lateral sliding the soil body and forms the reaming section, thereby finish the third with the Prefabricated reaming pile driving construction of bottom support device.
Such as Fig. 9 and the 5th embodiment shown in Figure 10, main purpose is to introduce a kind of Structural Tectonics, job practices and reaming principle thereof of stretch-type Prefabricated reaming pile as of the present invention.At first introduce in the present embodiment the Structural Tectonics of stretch-type Prefabricated reaming pile in conjunction with Fig. 9 and Figure 10.This stretch-type Prefabricated reaming pile comprises that precast pile (1), reaming bearing (2), hole-expanding pile lobe (3), drag-line (8) four parts form.Difference is with respect to first embodiment between the Structural Tectonics of this stretch-type Prefabricated reaming pile, reaming principle and job practices and first embodiment, saved temporary fastening device (4), increased drag-line (8), drag-line (8) is connected with hole-expanding pile lobe (3), and has changed the shape of hole-expanding pile lobe (3) tip.The change of the shape of hole-expanding pile lobe (3) tip by as shown in Figure 9, can be at pile driving process, make hole-expanding pile 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 hole-expanding pile lobe (3) side direction at earth's surface drawing drag-line (8), then continue the reaming construction that pile sinking just can be finished Prefabricated reaming pile.After the reaming construction is finished, can also at stake top stay guy (8), make the reaming section of this stretch-type Prefabricated reaming pile that the resistance to plucking end resistance can be provided.Other are with first embodiment.
Such as Figure 11 and the 6th embodiment shown in Figure 12, main purpose is to introduce a kind of Structural Tectonics, job practices and reaming principle thereof of Prefabricated reaming pile of grouting behind shaft or drift lining as of the present invention.At first introduce in the present embodiment the Structural Tectonics of the Prefabricated reaming pile of grouting behind shaft or drift lining in conjunction with Figure 11 and Figure 12.The Prefabricated reaming pile of this grouting behind shaft or drift lining comprises precast pile (1), reaming bearing (2), hole-expanding pile lobe (3), temporary fastening device (4) or drag-line (8), slip casting passage (6) five parts form, precast pile wherein (1), reaming bearing (2), hole-expanding pile lobe (3), the Structural Tectonics of temporary fastening device (4) or drag-line (8) is with first to the 5th embodiment, increased in the present embodiment slip casting passage (6), slip casting passage (6) is tubular structure, one end leads to the reaming section, the other end leads to the earth's surface, 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 Prefabricated reaming pile of grouting behind shaft or drift lining is sunk to the soil body, 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, namely 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 Prefabricated reaming pile construction with reference to five embodiment of first embodiment to the of the present invention.After the Prefabricated reaming pile driving construction is finished, enter the operating period of Prefabricated reaming pile, can utilize Prefabricated reaming pile of the present invention that resistance to compression or anti-pulling capacity are provided, for the part engineering, Pile Foundation Static Load Test auxiliary pile for example, the anchor pole that uses in the Foundation Pit Support 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 pile of introducing among first embodiment and the 3rd embodiment, but direct drawing precast pile (1) is in the process that precast pile (1) pulls out, under the effect of soil body lateral pressure, hole-expanding pile lobe (3) will draw in, after this continue drawing precast pile (1), just can extract Prefabricated reaming pile in the situation that remove reaming pile cutoff end resistance, realize the recovery construction of Prefabricated reaming pile.Prefabricated reaming pile for the first band bottom support device of introducing among second embodiment, at drawing precast pile (1) before, releasing is the constraint to bottom support device (5) in position, stake top, and then drawing precast pile (1) can realize reclaiming construction.For the stretch-type Prefabricated reaming pile of introducing among the 5th embodiment, at drawing precast pile (1) before, remove the constraint to drag-line (8) in position, stake top, then drawing precast pile (1) can realize reclaiming construction.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 practical square pile reaming seat structure structure and using method thereof of Prefabricated reaming pile.The practical square pile reaming bearing of a kind of Prefabricated reaming pile of introducing in the present embodiment comprises that mainly the bearing edge of a wing (9) and bearing axle (10) two parts form, 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 portion pre-embedded part welding with the bearing edge of a wing (9), by bearing axle (10) hole-expanding pile 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), hole-expanding pile lobe (3) can rotate relative to the bearing edge of a wing (9), thereby finishes the installation of practical square pile reaming bearing in the present embodiment.
As of the present invention such as Figure 14, the 9th embodiment shown in Figure 15, mainly in order to introduce a kind of practicality circle stake reaming seat structure structure and a using method thereof of Prefabricated reaming pile.This practicality circle stake reaming bearing comprises that the bearing edge of a wing (9), bearing axle (10) form with circular stake lobe support slot (11) three parts, 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 arranges 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) hole-expanding pile lobe (3) as shown in figure 11 is connected on the bearing edge of a wing (9), under the effect of bearing axle (10), hole-expanding pile lobe (3) can rotate relative to the bearing edge of a wing (9), in the present embodiment, the outside of hole-expanding pile lobe (3) can be cylindrical, be consistent with the profile of PHC pile tube, after hole-expanding pile lobe (3) reaming is finished, can rotate in the semi-cylindrical groove of circular stake lobe support slot (11), because the outside of hole-expanding pile lobe (3) can be set to identical cross sectional shape and size with the soffit of circular stake lobe support slot (11), therefore hole-expanding pile lobe (3) is larger with circle stake lobe support slot (11) contact surface, thereby can be by the huge end load of the circle of the practicality in the present embodiment stake reaming bearing transmission from hole-expanding pile lobe (3).
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 for Prefabricated reaming pile.The durability drag-line that should be used for Prefabricated reaming pile comprises steel strand (12), is used for fixedly ground tackle (14), anticorrosion outer tube (13) the three parts composition of steel strand (12), wherein be used for the end that the fixing ground tackle (14) of steel strand (12) is connected in steel strand (12), anticorrosion outer tube (13) is enclosed within the outside of steel strand (12).In use, can in hole-expanding pile lobe (3) as shown in Figure 9, a hole be set, make outside cover have the steel strand (12) of anticorrosion outer tube (13) to pass through this hole and extend to the stake top, end at nearly hole-expanding pile lobe (3) is fixed in steel strand (12) on the hole-expanding pile lobe (3) with ground tackle (14), in the present embodiment, steel strand (12), anticorrosion outer tube (13) have just 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 steel strand (12) and the soil body, thereby reaches the purpose of protection steel strand (12), makes steel strand (12) can bear lastingly load.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 bottom support device for Prefabricated reaming pile.The practical bottom support device that should be used for Prefabricated reaming pile comprises that steel strand (12) and ground tackle (14) two parts that are positioned at steel strand (12) end locking steel strand (12) form.Such as Fig. 3 and shown in Figure 17, by selecting the size of ground tackle (14), making ground tackle (14) can play support hole-expanding pile lobe (3) namely can use as bottom support device (5), utilize bottom support device (5) to transmit anti-pulling capacity such as need, then can realize by the size that increases ground tackle (14), reclaim bottom support device (5) such as need, then can select less ground tackle (14), after reaming is finished, make ground tackle (14) realize reclaiming purpose by 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 for Prefabricated reaming pile.The practical temporary fastening device that should be used for Prefabricated reaming pile comprise the constrainer (17) that lockhole (18) are set, the latch (16) that can insert lockhole (18), flexible chain (15) the three parts composition that is connected with latch (16).In use, constrainer (17) can be embedded in advance in the hole-expanding pile lobe (3), also can be by being located at the pre-manufactured hole on the hole-expanding pile lobe (3), constrainer (17) is installed on the hole-expanding pile lobe (3), when hole-expanding pile lobe (3) is installed, the placement of staggering up and down of constrainer (17) on the hole-expanding pile lobe (3) that can two or more are staggered relatively, and the lockhole (18) on the constrainer (17) is alignd, then will insert with the latch (16) of flexible chain (15) in the lockhole (18), flexible chain (15) passes to the earth's surface, under the effect of contraction of latch (16), hole-expanding pile lobe (3) is drawn close in pile driving process relatively, when reaming is constructed, latch (16) is extracted by flexible chain (15) on the earth's surface first, just removed practical temporary fastening device to the constraint of hole-expanding pile lobe (3), finished the effect of practical temporary fastening device, and can continue drawing flexible chain (15) and reclaim flexible chain (15) and latch (16).
As of the present invention such as Figure 11, the 13 embodiment shown in Figure 19, main in order to introduce a kind of practical hole-expanding pile lobe for Prefabricated reaming pile, one end of this practicality hole-expanding pile lobe is provided with the circular hole on as shown in Figure 11 the hole-expanding pile lobe (3), the other end is the wedge shape on as shown in Figure 11 the hole-expanding pile lobe (3), and 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 hole-expanding pile lobe (3) one ends, hole-expanding pile lobe (3) just can be around bearing axle (10) lateral rotation, the other end of hole-expanding pile lobe (3) is set to sphenoid as shown in figure 11, just can carry out the reaming construction in the situation that releasing temporary fastening device (4) side direction is opened the insertion soil body, the upper groove (19) that arranges of hole-expanding pile lobe (3), can be when hole-expanding pile lobe (3) be installed, make groove (19) and as shown in figure 14 the bearing edge of a wing (9) phase interlock, 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 for Prefabricated reaming pile, 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 the Prefabricated reaming pile driving construction is finished, need Prefabricated reaming pile is connected with sole plate or foundation platform, the stake top anchor device in the present embodiment can be anchored in Prefabricated reaming pile sole plate or foundation platform easily and effectively.In the present embodiment, the first stake top anchor device mounting method is such, after the Prefabricated reaming pile driving construction is finished, as shown in figure 10 drag-line (8) or bottom support device as shown in Figure 4 (5) 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 with Prefabricated reaming pile according to existing standard in case of necessity, then build sole plate or foundation platform concrete, namely finished the stake top anchor device of the present embodiment and installed.The second stake top anchor device mounting method of introducing in the present embodiment is such, construct first 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 bottom support device as shown in Figure 4 (5) are extended on sole plate or the foundation platform as anchor cable (22), after 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 (5)
1. the Prefabricated reaming pile of a grouting behind shaft or drift lining, the Prefabricated reaming pile 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 hole-expanding pile lobe (3) that can be movable with respect to reaming bearing (2), the temporary fastening device (4) that is used for fixing hole-expanding pile lobe (3) before the reaming construction during piling construction or the drag-line (8) that is connected with hole-expanding pile lobe (3), tubulose slip casting passage (6) the five parts composition that leads to the reaming section.
2. 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 pile reaches desired depth, make hole-expanding pile 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.
3. the Prefabricated reaming pile of grouting behind shaft or drift lining according to claim 1, it is characterized in that this reaming bearing (2) comprises that the bearing edge of a wing (9), bearing axle (10), circular stake lobe support slot (11) three parts form, 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 arranges the groove surface of cylindrical.
4. the Prefabricated reaming pile of grouting behind shaft or drift lining according to claim 1 is characterized in that an end of hole-expanding pile lobe (3) is provided with circular hole, and the other end is wedge shape, and is provided with groove (19) a round-meshed end is set.
5. the Prefabricated reaming pile of grouting behind shaft or drift lining according to claim 1, it is characterized in that at the top of precast pile (1) anchor device being set, this 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104644494A CN102926384A (en) | 2010-03-01 | 2010-03-01 | Prefabricated broaching pile adopting post grouting and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104644494A CN102926384A (en) | 2010-03-01 | 2010-03-01 | Prefabricated broaching pile adopting post grouting and construction method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101154437A Division CN102191772A (en) | 2010-03-01 | 2010-03-01 | Prefabricated reaming pile and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102926384A true CN102926384A (en) | 2013-02-13 |
Family
ID=47641301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104644494A Pending CN102926384A (en) | 2010-03-01 | 2010-03-01 | Prefabricated broaching pile adopting post grouting and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102926384A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452100A (en) * | 2013-08-20 | 2013-12-18 | 河北建设勘察研究院有限公司 | Construction method of post-grouting squeezing and expanding combination cast-in-place bored pile |
| CN112359830A (en) * | 2020-10-30 | 2021-02-12 | 苏州中材建设有限公司 | Prefabricated hollow pile pipe valve type pile shoe and construction method |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2082851C1 (en) * | 1993-01-13 | 1997-06-27 | Ульяновский государственный технический университет | Precast pile |
| CN201031390Y (en) * | 2007-05-17 | 2008-03-05 | 同济大学 | Tools type enlarged footing plucking resistance pile |
| KR20090080917A (en) * | 2008-01-22 | 2009-07-27 | 김창근 | Nail device for obtaining pre-tention |
| CN101761085A (en) * | 2009-12-18 | 2010-06-30 | 铁道第三勘察设计院集团有限公司 | Inbuilt anchor head embedded-type anchoring pile |
| CN201835276U (en) * | 2010-03-01 | 2011-05-18 | 张继红 | Prefabricated reaming pile |
-
2010
- 2010-03-01 CN CN2012104644494A patent/CN102926384A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2082851C1 (en) * | 1993-01-13 | 1997-06-27 | Ульяновский государственный технический университет | Precast pile |
| CN201031390Y (en) * | 2007-05-17 | 2008-03-05 | 同济大学 | Tools type enlarged footing plucking resistance pile |
| KR20090080917A (en) * | 2008-01-22 | 2009-07-27 | 김창근 | Nail device for obtaining pre-tention |
| CN101761085A (en) * | 2009-12-18 | 2010-06-30 | 铁道第三勘察设计院集团有限公司 | Inbuilt anchor head embedded-type anchoring pile |
| CN201835276U (en) * | 2010-03-01 | 2011-05-18 | 张继红 | Prefabricated reaming pile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452100A (en) * | 2013-08-20 | 2013-12-18 | 河北建设勘察研究院有限公司 | Construction method of post-grouting squeezing and expanding combination cast-in-place bored pile |
| CN112359830A (en) * | 2020-10-30 | 2021-02-12 | 苏州中材建设有限公司 | Prefabricated hollow pile pipe valve type pile shoe and construction method |
| 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 |
| CN113202088B (en) * | 2021-04-27 | 2023-09-26 | 中冶南方城市建设工程技术有限公司 | Precast pile bearing capacity reinforcing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102191772A (en) | Prefabricated reaming pile and construction method thereof | |
| CN201835276U (en) | Prefabricated reaming pile | |
| CN104612143A (en) | Bored composite pile structure under karst cave/soil cave geological condition | |
| CN105350531B (en) | The pile tube anchor pole composite foundation and construction technology of tension compression bidirectional load can be born | |
| CN109930609A (en) | A kind of campshed composite supporting construction and its construction method for upper-soft lower-hard ground | |
| CN104989425A (en) | Underground excavation hole entering supporting structure and method | |
| CN103938623A (en) | Tubular pile construction method | |
| CN102330436A (en) | Composite retaining structure and composite retaining method for half geotechnical layer ultradeep round spiral flow tank | |
| CN108385715A (en) | A kind of assembled stake arch combination retaining wall and its construction method | |
| CN102926384A (en) | Prefabricated broaching pile adopting post grouting and construction method thereof | |
| CN203613568U (en) | Anti-floating cement soil pile and anti-floating anchor rod combined anti-floating system | |
| CN210086280U (en) | Expanded footing soil anchor rod-precast concrete composite iron tower foundation structure | |
| CN113026760A (en) | Combined type supporting pile for double-element foundation pit of soil and rock and construction method thereof | |
| CN102626946A (en) | Manufacture method for concrete irregular fender post | |
| CN109681212B (en) | Excavation construction method of small-section loess tunnel | |
| CN205712063U (en) | Anchor pole-ball-star member basis | |
| CN205617355U (en) | Star -shaped element - stock - ball basis | |
| CN205742170U (en) | The pile tube anchor pole composite foundation of tension compression bidirectional load can be born | |
| CN209324377U (en) | Ledge method tunneling subway station arch springing ruggedized construction | |
| CN203701128U (en) | Micro pile-reinforced bridge foundation and bridge | |
| CN205712065U (en) | Ball-anchor pole-star member basis | |
| CN208379624U (en) | A kind of miscellaneous native composite foundation structure of backfill | |
| CN206986915U (en) | A kind of fan platform installation foundation | |
| CN205712064U (en) | A kind of ball-anchor pole-star member basis | |
| CN205502047U (en) | Resistance to plucking and cling compound basis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |