CN206667239U

CN206667239U - One kind expansion uplift pile

Info

Publication number: CN206667239U
Application number: CN201720054470.5U
Authority: CN
Inventors: 徐左屏
Original assignee: SHANGHAI ZHIFU CONSTRUCTION ENGINEERING Co Ltd
Current assignee: SHANGHAI ZHIFU CONSTRUCTION ENGINEERING Co Ltd
Priority date: 2017-01-17
Filing date: 2017-01-17
Publication date: 2017-11-24
Anticipated expiration: 2027-01-17

Abstract

The utility model discloses one kind to expand uplift pile, including：Pile body, core bar and bulge；Pile body has the core bore at connection pile body both ends, and core bar is located in core bore, and one end connection of bulge and pile body, one end of core bar is connected with bulge, and core bar stretches out core bore backwards to one end of bulge；Bulge and pile body are inserted in soil towards one end of bulge, and bulge is expanded in soil to resist soil reclaimed water to buoyancy caused by structure.The advantages of the utility model and beneficial effect are：Expand the contact area of bulge and soil, bulge contacts with soil, extrudes generation male cone effect so as to improve End Friction of the expansion uplift pile in soil to resist soil reclaimed water to buoyancy caused by structure, effectively increase the uplift bearing capacity of uplift pile, be effectively controlled the diameter of pile body, avoid uplift pile cost increase it is low with bottom resistance to plucking arrangement of reinforcement utilization rate caused by waste of material the problem of.

Description

One kind expansion uplift pile

Technical field

Building field is the utility model is related to, more particularly to a kind of expansion uplift pile.

Background technology

With commonly used, pile strength and anti-pulling capacity and of soil body frictional force of prefabricated resistance to plucking pile construction technology Of interest increasingly by people with spending, it is according to atlas pile body design tensile strength combination geological mapping material computation to be commonly designed Stake is long and single pile designs anti-pulling capacity.It is silt clay and High water cut hypotonicity soft clay area for friction supporting course, Its uplift pile typically uses major diameter more piece stake extension design scheme, is solving the problems, such as that more piece staking quality of pile need to take special connect Stake construction reinforcement measure.Growing the long increasing number of pile extension in addition due to uplift pile causes prestress pulling resistant stake cost to increase, and under Portion's resistance to plucking arrangement of reinforcement utilization rate is low thus waste of material phenomenon is serious.

Utility model content

In order to solve the above problems, the utility model provides a kind of expansion uplift pile.The technical program is by using expansion Portion expands in soil, i.e., guide plate drives cage plate to be rotated using pile body towards one end of bulge as the center of circle backwards to sliding block, expands The contact area of bulge and soil, bulge contact with soil, extrude generation male cone effect so as to improve expansion uplift pile End Friction in soil is to resist soil reclaimed water to buoyancy caused by structure；Therefore, the technical program makes full use of Soft clay area soil layer feature, the end profiles characteristic and the coefficient of friction resistance for changing expansion uplift pile, effectively increase uplift pile Uplift bearing capacity；

Meanwhile the technical program is as a result of bulge, therefore avoid in prior art, to major diameter more piece The use of stake extension design scheme, therefore the diameter of pile body is effectively controlled, and then avoid and add because uplift pile length is long Pile extension increasing number, caused uplift pile cost increase, and waste of material phenomenon caused by bottom resistance to plucking arrangement of reinforcement utilization rate is low The problem of serious, construction cost is effectively saved.

A kind of expansion uplift pile in the utility model, including：Pile body, core bar and bulge；The pile body has connection The core bore at the pile body both ends, the core bar are located in the core bore, and the bulge is connected with one end of the pile body, described One end of core bar is connected with the bulge, and the core bar stretches out the core bore backwards to one end of the bulge；The expansion Portion and the pile body are inserted in soil towards one end of bulge, and the bulge is expanded in soil to resist soil reclaimed water pair Buoyancy caused by structure.

In such scheme, the bulge includes cage plate, guide plate and sliding block；

One end of the cage plate is connected with L-type angle steel, and the other end of the cage plate is connected with reinforcing plate, the L types angle steel Horizontal component be connected with the cage plate, the vertical portion of the L-type angle steel is connected with one end of the pile body towards bulge； The reinforcing plate is mutually perpendicular to the cage plate；

The side of the guide plate is connected with the side of the cage plate；The sliding block and the core bar are towards the bulge One end connects；The guide plate has hypotenuse backwards to the side of cage plate, and several described guide plates and reinforcing plate surround and form cross section For trapezoidal execution space, the sliding block is in the execution space, and the cross section for performing space is towards the reinforcement One end of plate is long side, and the execution space is short side backwards to one end of the reinforcing plate.

In such scheme, the cage plate has several, and several described cage plates surround the pile body towards bulge The end face distribution of one end；The guide plate has several, and several described guide plates are connected with cage plate several described respectively；It is described Hypotenuse has neck backwards to one end of the reinforcing plate, and the cage plate has reinforcement；The sliding block is towards one end of reinforcing plate With bayonet lock, the side of the reinforcing plate has the bayonet socket matched with the bayonet lock.

In such scheme, the diameter of the core bore is more than the diameter of the core bar, the side wall of the core bore and the core bar Around the connection space for forming annular tubbiness, the connection space is used to accommodate curable slurries to connect the core bar and stake Body.

In such scheme, the pile body is column structure, and the cross section of the pile body is circular or polygon；The core bar There is screw thread backwards to one end of the bulge；

The expansion uplift pile also includes end plate, and the end plate is connected simultaneously with the pile body backwards to one end of the bulge The core bore is covered backwards to one end of the bulge, the end plate, which also has, connects the core bore and extraneous passage and note Starch hole.

A kind of construction machinery for expanding uplift pile, including：Draw-off gear and prestressing force tensioning device, the draw-off gear position It is connected in the pile body backwards to one end of soil and with the core bar of the pile body, the draw-off gear lifts the core bar, makes institute State core bar and realize that bulge expands backwards to soil movement and with movable slider movement；

The prestressing force tensioning device and the pile body backwards to soil end thereof contacts, the prestressing force tensioning device also with The core bar connection, and prestressing force is exported to bulge by core bar described in tension；Described in the prestressing force tensioning device drives Sliding block moves, and realizes the bulge expansion and the additional prestressing on core bar and pile body.

In such scheme, the draw-off gear is fixed in the pile follower bar of Static pressure pile driver, and the pile follower bar is towards pile body One end is opening, and the pile follower bar also has drawing space, the drawing space and open communication towards one end of opening；

The draw-off gear includes：Motor, gearbox and Threaded clamp；The motor is connected with the gearbox, described Gearbox is connected with the Threaded clamp, and the Threaded clamp has the screw matched with core bar, the screw and the core bar It is connected through a screw thread；

The motor, gearbox and Threaded clamp are fixed in the drawing space, and the motor is located at the gearbox Backwards to the side of the opening, the Threaded clamp is located at the gearbox and passed through towards the side of the opening, the core bar The opening is connected with the Threaded clamp.

In such scheme, the prestressing force tensioning device includes hydraulic jack, hydraulic tube, bearing and Grouting Pipe, described Hydraulic jack is connected by the hydraulic tube with hydraulic station, and the bottom of the bearing is detachably mounted to the pile body backwards On one end of soil, the hydraulic jack is located at the top at the top of the bearing and is connected with core bar, the hydraulic station to Hydraulic jack output hydraulic pressure, make core bar described in hydraulic jack tension to export prestressing force to bulge；

The Grouting Pipe is through bearing and inserts in the core bore of the pile body, curable for being injected into the core bore Slurries.

A kind of construction technology for expanding uplift pile, comprises the following steps：

S1. preparation of construction：Prepare construction drawing, determine pile follower point；

S2. materials arrival：Pile body with core bore is marched into the arena, and is transported to operating point；

S3. bulge is made：Bulge is made in operating point；

S4. core bar is installed：It is connected with each other by core bar through the core bore and by core bar and bulge, by bulge and pile body It is connected with each other and obtains foundation anti-pulling stake；

S5. judge whether to need pile extension according to the needs of construction drawing；

S51. static pressure pile follower：If not needing pile extension, expansion uplift pile is transported to pile follower point, there is expansion uplift pile One end of bulge will be expanded in uplift pile press-in pile follower point towards soil, the pile follower bar of Static pressure pile driver；In the expansion resistance to plucking The pile body of stake is formed backwards to one end of soil, connection with the core bore and the end plate of extraneous passage and injected hole is connected Expand uplift pile；

S52. static pressure pile extension and pile follower：If construction drawing needs deeper piling depth and needs pile extension, base can be passed through Plinth uplift pile and connection stake are realized, and form expansion uplift pile；

S6. core bar drawing：When reaching predetermined altitude in expansion uplift pile press-in pile follower point, Threaded clamp alignment is described swollen The core bar of swollen uplift pile, operates the motor of draw-off gear, and the motor makes the spiral shell of draw-off gear by the gearbox of draw-off gear Line fixture rotates, and the core bar is screwed in the screw of Threaded clamp, during core bar screws in the screw, realizes core bar In the axial movement of the core bore of the expansion uplift pile, and then the sliding block of the expansion uplift pile is set to be moved towards pile follower bar；

The sliding block during being moved to the pile follower bar, the side of the sliding block by with the expansion uplift pile The hypotenuse contact of guide plate, the guide plate is set to drive the cage plate of the expansion uplift pile, with the pile body direction of the expansion uplift pile One end of bulge is that the center of circle rotates backwards to the sliding block, and then realizes that the bulge expands in soil, and it is anti-to improve expansion Frictional force of the pile pulling in soil is to resist soil reclaimed water to buoyancy caused by structure；

S7. earth excavation：In pile follower point excavation pit；

S8. prestressed stretch-draw：The bearing of prestressing force tensioning device is fixed on the pile body backwards to one end of soil, then will The hydraulic jack of prestressing force tensioning device is connected with core bar, and operation hydraulic station makes hydraulic station pass through the prestressing force tensioning device Hydraulic tube to the hydraulic jack output hydraulic pressure, make core bar and sliding block obtain should towards the pre- of prestressing force tensioning device direction Power, and then the cage plate is obtained the prestressing force rotated backwards to the sliding block；

The attaching nut on the prestressed core bar, and the nut is mutually extruded with the end plate, to protect The prestressing force for demonstrate,proving the core bar, sliding block and cage plate is not attenuated；

S9. core bore slip casting：The Grouting Pipe of the prestressing force tensioning device is passed through into bearing, and core bore is inserted by injected hole Interior, operating the Grouting Pipe makes the Grouting Pipe inject curable slurries to core bore；

S10. stake core concrete pours：A core concrete is poured in the foundation ditch；

S11. detection is checked and accepted：Carried out an acceptance inspection according to construction requirement.

In such scheme, the step S52 specifically includes following steps：

S521. manufacture connection stake：By making connection stake to ensure piling depth, and according to construction drawing to piling depth Requirement determine it is described connection stake quantity；The connection stake is by core bar and has the pile body of core bore and forms, the connection stake Core bar both ends be each passed through it is described connection stake core bore, it is described connection stake at least have one；

S522. the stake of static pressure foundation anti-pulling and connection stake：Foundation anti-pulling stake is first pressed into the soil of pile follower point using Static pressure pile driver In earth, the connection stake is promoted to the top of the foundation anti-pulling stake, by the core bar of the foundation anti-pulling stake and connects stake Core bar is connected with each other by screw shell and is integrally formed, then by the bottom of the connection stake and the foundation anti-pulling stake backwards to soil End thereof contacts, then stake will be connected by Static pressure pile driver be pressed into soil and be integrally formed with foundation anti-pulling stake；

S523. static pressure connection stake：The top for the connection stake next connection stake being promoted in soil is simultaneously located at sky In, and the core bar of the connection stake positioned at the core bar of aerial connection stake and in soil is interconnected to by screw shell It is integrated, then by the end thereof contacts positioned at the aerial bottom of connection stake with the connection stake in soil backwards to soil, then lead to Crossing Static pressure pile driver will be integrally formed in aerial connection stake press-in soil with the connection stake in soil；

S524. expansion uplift pile is formed：The connection stake is persistently pressed into until reaching construction drawing according to S523 steps During the deep depth requirements of stake, the pile body of the connection stake in last press-in soil has connection backwards to one end of soil, connection The core bore and the end plate of extraneous passage and injected hole, make the foundation anti-pulling stake and connection stake shape integral, and into To expand uplift pile.

The advantages of the utility model and beneficial effect are：The utility model provides a kind of expansion uplift pile, expands swollen Swollen portion and the contact area of soil, bulge contacts with soil, extrudes and produces male cone effect and exist so as to improve expansion uplift pile End Friction in soil effectively increases the single pile resistance to plucking of uplift pile to resist soil reclaimed water to buoyancy caused by structure Bearing capacity；Avoid in prior art, the use to major diameter more piece stake extension design scheme, therefore be effectively controlled The diameter of pile body, and then avoid because long pile extension increasing number in addition is grown in uplift pile, caused uplift pile cost increases, and The problem of waste of material phenomenon caused by bottom resistance to plucking arrangement of reinforcement utilization rate is low is serious, has effectively saved construction cost.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of structural representation for expanding uplift pile of the utility model；

Fig. 2 is a kind of knot for expanding annexation between core bar, bulge, end plate and nut in uplift pile of the utility model Structure schematic diagram；

Fig. 3 is a kind of partial enlargement structural representation for expanding bulge in uplift pile of the utility model；

Fig. 4 is the structural representation of draw-off gear and pile follower bar in a kind of construction machinery for expanding uplift pile of the utility model Figure；

Fig. 5 is the office that pile follower bar has the one end for performing space in a kind of construction machinery for expanding uplift pile of the utility model Portion's mplifying structure schematic diagram；

Fig. 6 be the utility model it is a kind of expand uplift pile construction machinery in prestressing force tensioning device with expansion uplift pile it Between the structural representation that connects；

Fig. 7 is the structural representation that a kind of bulge for expanding uplift pile of the utility model expands in soil；

Fig. 8 is a kind of flow chart for the construction technology for expanding uplift pile of the utility model.

In figure：1st, pile body 2, core bar 3, bulge 4, end plate

5th, draw-off gear 6, prestressing force tensioning device 7, pile follower bar 8, execution space

9th, nut 11, core bore 21, screw thread 31, cage plate

32nd, guide plate 33, reinforcement 34, sliding block 35, L-type angle steel

36th, reinforcing plate 37, bayonet lock 38, neck 39, bayonet socket

321st, hypotenuse 41, passage 42, injected hole 51, motor

52nd, gearbox 53, Threaded clamp 54, wireless control switch 55, rechargeable battery

56th, control line 531, screw 61, hydraulic jack 62, hydraulic tube

63rd, bearing 64, Grouting Pipe 71, opening 72, drawing space

Embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below Example is only used for clearly illustrating the technical solution of the utility model, and can not limit protection model of the present utility model with this Enclose.

As Figure 1-Figure 8, the utility model is a kind of expansion uplift pile, including：Pile body 1, core bar 2 and bulge 3； Pile body 1 has the core bore 11 at connection pile body 1 both ends, and core bar 2 is located in core bore 11, and bulge 3 is connected with one end of pile body 1, core One end of bar 2 is connected with bulge 3, and core bar 2 stretches out core bore 11 backwards to one end of bulge 3；Bulge 3 and pile body 1 are towards swollen In one end insertion soil in swollen portion 3, bulge 3 is expanded in soil to resist soil reclaimed water to buoyancy caused by structure.

Specifically, bulge 3 includes cage plate 31, guide plate 32 and sliding block 34；

One end of cage plate 31 is connected with L-type angle steel 35, and the other end of cage plate 31 is connected with reinforcing plate 36, L types angle steel 35 Horizontal component is connected with cage plate 31, and the vertical portion of L-type angle steel 35 is connected with one end of pile body 1 towards bulge 3；Reinforcing plate 36 It is mutually perpendicular to cage plate 31；

The side of guide plate 32 is connected with the side of cage plate 31；Sliding block 34 is connected with one end of core bar 2 towards bulge 3；Lead Plate 32 has hypotenuse 321 backwards to the side of cage plate 31, and several guide plates 32 and reinforcing plate 36 are around forming cross section to be trapezoidal Space 8 is performed, for sliding block 34 positioned at performing in space 8, the cross section for performing space 8 towards one end of reinforcing plate 36 is long side, is held Row space 8 is short side backwards to one end of reinforcing plate 36.

Further, cage plate 31 has several, and several cage plates 31 surround end of the pile body 1 towards one end of bulge 3 EDS maps；Guide plate 32 has several, and several guide plates 32 are connected with several cage plates 31 respectively；Hypotenuse 321 is backwards to reinforcing plate 36 one end has neck 38, and cage plate 31 has reinforcement 33；Sliding block 34 has bayonet lock 37 towards one end of reinforcing plate 36, strengthens The side of plate 36 has the bayonet socket 39 matched with bayonet lock 37；

Sliding block 34 will be moved in neck 38 by core bar 2, and neck 38 will prevent the movement of sliding block 34.

Preferably, the diameter of core bore 11 is more than the diameter of core bar 2, and the side wall of core bore 11 surrounds with core bar 2 forms annular bucket The connection space of shape, connection space are used to accommodate curable slurries to connect core bar 2 and pile body 1.

Preferably, pile body 1 is column structure, and the cross section of pile body 1 is circular or polygon；Core bar 2 is backwards to bulge 3 One end has screw thread 21；

Expansion uplift pile also includes end plate 4, and end plate 4 is connected backwards to one end of bulge 3 with pile body 1 and covers core bore 11 and carries on the back To one end of bulge 3, end plate 4 also has connection core bore 11 and extraneous passage 41 and injected hole 42.

A kind of construction machinery for expanding uplift pile, including：Draw-off gear 5 and prestressing force tensioning device 6, draw-off gear 5 It is connected in pile body 1 backwards to one end of soil and with the core bar 2 of pile body 1, draw-off gear 5 lifts core bar 2, makes core bar 2 backwards to soil Movement simultaneously realizes that bulge 3 expands with the movement of movable slider 34；

End thereof contacts of the prestressing force tensioning device 6 with pile body 1 backwards to soil, prestressing force tensioning device 6 also connect with core bar 2 Connect, and prestressing force is exported to bulge 3 by tension core bar 2；Prestressing force tensioning device 6 moves with movable slider 34, realizes expansion Portion 3 expands and the additional prestressing on core bar 2 and pile body 1.

Specifically, draw-off gear 5 is fixed in the pile follower bar 7 of Static pressure pile driver, pile follower bar 7 is to open towards one end of pile body 1 Mouth 71, pile follower bar 7 also has drawing space 72 towards one end of opening 71, and drawing space 72 connects with opening 71；

Draw-off gear 5 includes：Motor 51, gearbox 52 and Threaded clamp 53；Motor 51 is connected with gearbox 52, speed change Case 52 is connected with Threaded clamp 53, and Threaded clamp 53 has the screw 531 matched with core bar 2, and screw 531 passes through spiral shell with core bar 2 Line 21 connects；

Motor 51, gearbox 52 and Threaded clamp 53 are fixed in drawing space 72, and motor 51 is located at gearbox 52 backwards The side of opening 71, Threaded clamp 53 are located at gearbox 52 and pass through opening 71 and Threaded clamp towards the side of opening 71, core bar 2 53 connections.

Preferably, draw-off gear 5 also includes the wireless control switch 54 and rechargeable battery 55 being connected with each other, and controlled in wireless is opened Pass 54 and rechargeable battery 55 are fixed on pile follower bar 7 and pass through control with motor 51 backwards to the one end in drawing space 72, rechargeable battery 55 Line 56 connects.

Specifically, prestressing force tensioning device 6 includes hydraulic jack 61, hydraulic tube 62, bearing 63 and Grouting Pipe 64, hydraulic pressure Jack 61 is connected by hydraulic tube 62 with hydraulic station (not shown), and the bottom of bearing 63 is detachably mounted to pile body 1 On one end of soil, hydraulic jack 61 is located at the top at the top of bearing 63 and is connected with core bar 2, and hydraulic station is to liquid The output hydraulic pressure of jack 61 is pressed, makes the tension core bar 2 of hydraulic jack 61 to export prestressing force to bulge 3；

Grouting Pipe 64 is through bearing 63 and inserts in the core bore 11 of pile body 1, for injecting curable slurry into core bore 11 Liquid (not shown).

S2. materials arrival：Pile body 1 with core bore 11 is marched into the arena, and is transported to operating point；

S3. bulge is made：Bulge 3 is made in operating point；

S4. core bar is installed：Core bar 2 and bulge 3 through core bore 11 and are connected with each other by core bar 2, by bulge 3 and stake Body 1, which is connected with each other, obtains foundation anti-pulling stake；

S51. static pressure pile follower：If not needing pile extension, expansion uplift pile is transported to pile follower point, there is expansion uplift pile One end of bulge 3 will be expanded in uplift pile press-in pile follower point towards soil, the pile follower bar 7 of Static pressure pile driver；In expansion uplift pile Pile body 1 backwards to one end of soil, connection is with connection core bore 11 and the end plate 4 of extraneous passage 41 and injected hole 42, shape Into expansion uplift pile；

S6. core bar drawing：When reaching predetermined altitude in expansion uplift pile press-in pile follower point, Threaded clamp 53 is aligned swollen The core bar 2 of swollen uplift pile, operates the motor 51 of draw-off gear 5, and motor 51 fills drawing by the gearbox 52 of draw-off gear 5 Put 5 Threaded clamp 53 to rotate, core bar 2 is screwed in the screw 531 of Threaded clamp 53, the process of screw 531 is screwed in core bar 2 In, axial movement of the core bar 2 in the core bore 11 of expansion uplift pile is realized, and then make the sliding block 34 of expansion uplift pile towards pile follower Bar 7 moves；

For sliding block 34 during being moved to pile follower bar 7, the side of sliding block 34 is oblique by the guide plate 32 with expanding uplift pile Side 321 contacts, and guide plate 32 is driven the cage plate 31 of expansion uplift pile, to expand the pile body 1 of uplift pile towards one end of bulge 3 Rotated for the center of circle backwards to sliding block 34, and then realize that bulge 3 expands in soil, improve friction of the expansion uplift pile in soil Power is to resist soil reclaimed water to buoyancy caused by structure；

S7. earth excavation：In pile follower point excavation pit；

S8. prestressed stretch-draw：The bearing 63 of prestressing force tensioning device 6 is fixed on pile body 1 backwards to one end of soil, then will The hydraulic jack 61 of prestressing force tensioning device 6 is connected with core bar 2, and operation hydraulic station makes hydraulic station pass through prestressing force tensioning device 6 hydraulic tube 62 makes core bar 2 and sliding block 34 obtain towards the direction of prestressing force tensioning device 6 to the output hydraulic pressure of hydraulic jack 61 Prestressing force, and then make cage plate 31 obtain backwards to sliding block 34 rotate prestressing force；

The attaching nut 9 on prestressed core bar 2, and make nut 9 mutually be extruded with end plate 4, with ensure core bar 2, The prestressing force of sliding block 34 and cage plate 31 is not attenuated；

S9. core bore slip casting：The Grouting Pipe 64 of prestressing force tensioning device 6 is passed through into bearing 63, and inserted by injected hole 42 In core bore 11, operation Grouting Pipe 64 makes Grouting Pipe 64 inject curable slurries to core bore 11；

S10. stake core concrete pours：A core concrete is poured in foundation ditch；

Specifically, step S52 specifically includes following steps：

S521. manufacture connection stake：By making connection stake to ensure piling depth, and according to construction drawing to piling depth Requirement determine connection stake quantity；Pile body of the connection stake (not shown) by core bar (not shown) and with core bore (not shown) and composition, the both ends for connecting the core bar of stake are each passed through the core bore of connection stake, and connection stake at least has one；

S522. the stake of static pressure foundation anti-pulling and connection stake：Foundation anti-pulling stake is first pressed into the soil of pile follower point using Static pressure pile driver In earth, connection stake is promoted to the top of foundation anti-pulling stake, the core bar of the core bar 2 of foundation anti-pulling stake and connection stake is passed through into screw thread Sleeve is connected with each other and is integrally formed, then will connect end thereof contacts of the bottom of stake with foundation anti-pulling stake backwards to soil, then by quiet Pile press machine will connect to be integrally formed in stake press-in soil with foundation anti-pulling stake；

S524. expansion uplift pile is formed：Connection stake is persistently pressed into according to S523 steps until the stake for reaching construction drawing is deep During depth requirements, for the pile body of the connection stake in last press-in soil backwards to one end of soil, connection has connection core bore With the passage 41 in the external world and the end plate 4 of injected hole 42, make foundation anti-pulling stake and connection stake shape integral and anti-as expansion Pile pulling.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

Claims

1. one kind expansion uplift pile, it is characterised in that including：Pile body, core bar and bulge；The pile body, which has, connects the stake The core bore at body both ends, the core bar are located in the core bore, and the bulge is connected with one end of the pile body, the core bar One end is connected with the bulge, and the core bar stretches out the core bore backwards to one end of the bulge；The bulge and institute State pile body to insert in soil towards one end of bulge, the bulge expands in soil produces structure to resist soil reclaimed water Raw buoyancy.

A kind of 2. expansion uplift pile according to claim 1, it is characterised in that the bulge include cage plate, guide plate and Sliding block；

One end of the cage plate is connected with L-type angle steel, and the other end of the cage plate is connected with reinforcing plate, the water of the L-type angle steel Flat part is connected with the cage plate, and the vertical portion of the L-type angle steel is connected with one end of the pile body towards bulge；It is described Reinforcing plate is mutually perpendicular to the cage plate；

The side of the guide plate is connected with the side of the cage plate；The sliding block and the core bar are towards one end of the bulge Connection；The guide plate has hypotenuse backwards to the side of cage plate, and several described guide plates and reinforcing plate surround and form cross section as ladder The execution space of shape, the sliding block is in the execution space, and the cross section for performing space is towards the reinforcing plate One end is long side, and the execution space is short side backwards to one end of the reinforcing plate.

A kind of 3. expansion uplift pile according to claim 2, it is characterised in that the cage plate has several, several The cage plate is distributed around the pile body towards the end face of one end of bulge；The guide plate has several, described in several Guide plate is connected with cage plate several described respectively；The hypotenuse has neck, the cage plate tool backwards to one end of the reinforcing plate There is reinforcement；The sliding block has bayonet lock towards one end of reinforcing plate, and the side of the reinforcing plate has to be matched with the bayonet lock Bayonet socket.

4. a kind of expansion uplift pile according to claim 1, it is characterised in that the diameter of the core bore is more than the core bar Diameter, the side wall of the core bore and the core bar surround the connection space for forming annular tubbiness, and the connection space is used to hold Curable slurries are received to connect the core bar and pile body.

5. a kind of expansion uplift pile according to claim 1, it is characterised in that the pile body is column structure, the stake The cross section of body is circular or polygon；The core bar has screw thread backwards to one end of the bulge；

The expansion uplift pile also includes end plate, and the end plate is connected and covered backwards to one end of the bulge with the pile body For the core bore backwards to one end of the bulge, the end plate, which also has, connects the core bore and extraneous passage and slip casting Hole.