CN107780408A

CN107780408A - Concrete tubular pile device and its construction method

Info

Publication number: CN107780408A
Application number: CN201710848118.3A
Authority: CN
Inventors: 连晓辉; 管青
Original assignee: Wenzhou Tianze Construction Co Ltd
Current assignee: Wenzhou Tianze Construction Co Ltd
Priority date: 2017-09-19
Filing date: 2017-09-19
Publication date: 2018-03-09
Anticipated expiration: 2037-09-19
Also published as: CN107780408B

Abstract

The invention discloses a kind of concrete tubular pile device and its construction method, including pile body, inside has the chamber being in communication with the outside；Pipe pile head, it is connected to the end of pile body and can be rotated with respect to pile body, the storage tank with chamber is offered inside the pipe pile head；Drive mechanism, including being arranged in chamber and can occur along chamber the drive rod of axial displacement and the pipe pile head drive division that pile body rotates relatively can be driven during axially reciprocating along chamber by drive rod, the drive division includes being distributed on some first drive blocks on storage tank inwall and some second drive blocks on uniform drive rod outer wall, first drive block has lozenges, second drive block has a leading section, the leading section can force on lozenges the rotation for driving pipe pile head, whole concrete tubular pile device significantly reduces the resistance between ground in a manner of rotatable engagement linear advancement, improve efficiency of construction.

Description

Concrete tubular pile device and its construction method

Technical field

The present invention relates to it is a kind of be applied to soft base engineering in prefabricated pile, more particularly to a kind of concrete tubular pile device and its Construction method.

Background technology

Pile tube is a kind of prefabricated engineering pile, is mainly used in pile foundation engineering, it is possible to increase ground and the bearing capacity on basis, mesh Preceding conventional mainly prestressed high-strength concrete pile.Beaten in the prior art for the construction method of concrete tubular pile Method, rotation plunging, inner excavated method etc., in these construction methods, pile tube can be by ground resistance.

Traditional pile tube profile is mostly linear pattern, and pile tube front end can only be hindered by the pressure-bearing on pure section in constructing in the early stage Power, after piling length, sand, which is entered inside pile tube, causes the frictional force between the inner peripheral surface of pile tube and ground to increase Difficulty of construction is caused just to greatly improve greatly.

The content of the invention

First purpose of the present invention is to provide a kind of concrete tubular pile device, and end can when by the axial force of outside Rotated, frictional force of the pile tube between progradation side face and ground can be greatly decreased, improve efficiency of construction.

The present invention above-mentioned technical purpose technical scheme is that：

A kind of concrete tubular pile device, including：

Pile body, inside have the chamber being in communication with the outside；

Pipe pile head, it is connected to the end of pile body and can be rotated with respect to pile body, offers inside the pipe pile head and connect with chamber Logical storage tank；

Drive mechanism, including be arranged in chamber and can occur along chamber axial displacement drive rod and can be by drive rod along chamber Room drives pipe pile head during axially reciprocating, and with respect to the drive division that pile body rotates, the drive division includes being distributed on Some second drive blocks on some first drive blocks and uniform drive rod outer wall on storage tank inwall, first driving Block has lozenges, and second drive block has a leading section, and the leading section can force in and pipe pile head is driven on lozenges Rotation.

By using above-mentioned technical proposal, when being driven piles to concrete tubular pile device, drive rod can be made by outside Axial displacement firmly occurs along chamber, the second drive block leading section in displacement process on drive rod impacts inside pipe pile head the On the lozenges of two drive blocks so that pipe pile head is circumferentially rotated by driving, and drive rod is continuous in the form of reciprocating Driving pipe pile head circumferentially rotates, and then causes whole tube to add propulsion mode to enter subsurface to rotate, and reduces Resistance during piling between ground, reduce difficulty of construction lifting construction efficiency simultaneously.

Preferably, spiral blade, the rotation of the pipe pile head are additionally provided with the outer wall of the pipe pile head Direction is identical with the drilling direction of blade.

By using above-mentioned technical proposal, spiral blade is set more preferably to reduce pile tube on pipe pile head outer wall first Resistance between the outer wall and subsurface soil of resistance, especially pipe pile head between head and ground so that whole pile tube device is in spiral shell Revolve more smoothly in progradation；Secondly blade is pivoted about, now when being driven by pipe pile head with knife-edge leading end edge Ground can be acted on by the turning moment of blade, and blade can be prevented by the direction reaction opposite with turning moment in turn Only whole pile tube device occurs eccentric, plays certain correction effect, ensures the quality of construction.

Preferably, the external diameter of the blade is less than or equal to the external diameter of pile body.

By using above-mentioned technical proposal, during screw propulsion, blade exists certain whole pile tube device with ground Resistance, external diameter more high surface area is bigger, and then can be also bigger by resistance, and will can be reduced after the reduced diameter of blade with Resistance between ground, while part soil can be taken advantage of a situation and push to the periphery of pile body, Jin Erzhuan by blade in rotary course Body can reduce the resistance between soil in progradation, preferably improve efficiency of construction.

Preferably, it is provided with the chamber and forces drive rod all the time to have from away from the chamber side of pipe pile head to take off From elastic component, the end of the drive rod is extended out of pile body chamber.

By using above-mentioned technical proposal, drive rod can be resetted after every Secondary Shocks in the presence of elastic component, be protected The impact of next time is demonstrate,proved, and the end of drive rod will stretch out in the end face of pile body so that acting on the axial force of pile tube device first It can impact on drive rod so that pipe pile head rotates in a circumferential direction before axially being promoted with respect to pile tube, while preliminary drive is whole Pile tube device carries out axial displacement, and hereafter pile body is significantly carried out axial propulsion by axial force again, improves efficiency of construction.

Preferably, deviation correction mechanism is additionally provided with the pile body, the deviation correction mechanism includes at least one be set in On drive rod and along the axially stacked correction part of drive rod, the correction part include the sealing abutted with drive rod outer wall and Sealing is forced to have all the time toward the backlash compensation portion of drive rod side movement tendency.

By using above-mentioned technical proposal, during being driven piles to whole pile tube, outside impulsive force must be except Intensity speed outer greatly must also be fast, and drive rod is small with respect to the diameter of pile body, easily occurs in axial displacement eccentric existing As now drive rod being held tightly using multiple correction parts, by rectifying a deviation, the sealing on part is close to the outer wall of drive rod, first Actuator guidance quality is improved, secondly chamber is isolated from the outside, rubbish incidental is reduced and enters in pile body, influence follow-up filling Dress construction improves construction quality, finally also utilizes the backlash compensation portion being connected with sealing to ensure that sealing is close to driving all the time The outside of part, remain that drive rod is in chamber using backlash compensation portion elastic force while cavity seal is improved Heart position, good correction effect is played, improves construction quality.

Preferably, the backlash compensation portion includes at least one bellows segment in inverted V-shaped.

By using above-mentioned technical proposal, the elastic force to sealing, of bellows segment are provided using V-shaped bellows segment Number is more, and the gap that can adjust is bigger, is applicable to different driving shank diameter and construction operating mode, reduces difficulty of construction.

Preferably, the correction part also includes the supporting part being connected with backlash compensation portion, the lower end of the supporting part Face is provided with the clamping ring extended perpendicularly outward, and the upper surface of the supporting part offers the stopper slot set for clamping ring card.

By using above-mentioned technical proposal, adjacent two correction parts are laminated mutually, and utilize the card on wherein one correction part Connect ring card set into it is adjacent correction part on stopper slot in realize both radial direction it is spacing, improve whole deviation correction mechanism to driving The guiding of bar and correction performance；Secondly the mutual card of adjacent two corrections part sets the compressive resistance that is laminated and can also improve on axial direction, improves The service life of whole deviation correction mechanism.

Preferably, the pipe pile head includes the boss positioned at end, and the end of the pile body is offered for boss portion The first mounting groove that partial volume is put, thrust bearing is provided between first mounting groove and boss；The pile body includes being arranged on Two adjustment blocks of end, the adjustment block offer the second mounting groove housed for boss remainder.

By using above-mentioned technical proposal, the boss in pipe pile head is fastened between pile body and two adjustment blocks respectively, first Realize the relative rotation between pipe pile head and pile body；Secondly Relative friction between pipe pile head and pile body is reduced using thrust bearing Abrasion, while two thrust bearings can bear large axial force, improve the service life of whole pile tube device, and set two The adjustment block of split is in addition to for boss, moreover it is possible to the positioning horizontal to boss is played, by designing different roughness or section Shape carrys out the problem of complementary boss machining accuracy, and then improves the precision of pipe pile head rotation, prevents eccentric rotary, improves Construction quality.

Second object of the present invention is to provide a kind of construction method using concrete tubular pile device, is promoted using rotation Frictional force of the pile tube between progradation side face and ground is greatly decreased in mode, improves efficiency of construction.

A kind of construction method of concrete tubular pile device described in use, comprises the following steps：

Step 1, measuring stake position：Stake position unwrapping wire should control stake be discharged according to place, during the unwrapping wire of stake position should according to design requirement, The position relative coordinate of stake is determined first, subsurface 500mm is squeezed into stake position center with bamboo stick, with quick lime line by stake Draw a circle to approve in footpath；

Step 2, stake machine are in place：Using diesel pile driver, concrete tubular pile device is hung in piling machine, pipe pile head is positioned at Stake position center；

Step 3, piling：After concrete tubular pile device positioning, start pile sinking, pile monkey is overlapped with pile body and pipe pile head center line, beaten Pile monkey impacts drive rod first during stake so that and drive rod is quickly retracted into the chamber of pile body, and second on drive rod The leading section of drive block, which is applied on the lozenges of the first drive block, extrudes the first drive block, promotes pipe pile head to occur with respect to pile body Rotate, while pile monkey impacts integrated pushing concrete tubular pile device on pile body and is driven underground, pile monkey be repeated hammering until Concrete tubular pile device reaches elevation location；

Step 4, fill concrete：Embedding base concrete is filled out to chamber, and taps pile body and the concrete sticked in chamber inner wall shakes It is lower and concrete vibrating is closely knit；

Step 5, pile crown cutting：The earthwork is dug to substrate designed elevation, and unnecessary pile body is cut or chisel is to than basic bottom absolute altitude It is higher by 100mm.

By using above-mentioned technical proposal, using hammering method when being driven piles to concrete tubular pile device, pile monkey first Impact make on drive rod its drive pipe pile head rotated in advance with respect to pile body, then work as drive rod end completely into The end that rear pile monkey impacts pile body in the chamber of pile body causes whole concrete tubular pile device to carry out axial propulsion, due to pile monkey Impulsive force and impact velocity it is very fast, the rotation and the propulsion of whole concrete tubular pile device of pipe pile head are almost carried out simultaneously, Concrete tubular pile device resistance between ground during piling is significantly reduced, while also improves efficiency of construction.

In summary, the invention has the advantages that：

1st, by setting a drive rod being located in pile body, and drive rod axial movement reciprocal in chamber is utilized, Driving pipe pile head is rotated relative to pile body, while axial propulsion occurs under impact for pile body, with rotatable engagement linear advancement side Formula significantly reduces the resistance between ground, improves efficiency of construction；

2nd, by setting deviation correction mechanism to coordinate the blade set in the shape of a spiral on pipe pile head outer wall to be effectively prevented in pile body Caused eccentric phenomena in the progradation of whole pile tube device axial direction, improves construction quality.

Brief description of the drawings

Fig. 1 is the sectional view of concrete tubular pile device in embodiment one；

Fig. 2 is the decomposing schematic representation that concrete tubular pile device is in each part wherein on a visual angle in embodiment one；

Fig. 3 is the decomposing schematic representation that concrete tubular pile device is in each part on another visual angle in embodiment one；

Fig. 4 is the top view of pipe pile head in embodiment one；

Fig. 5 is the structural representation of the second drive block on drive rod in embodiment one；

Fig. 6 is the scheme of installation between multiple correction parts and drive rod in embodiment one.

In figure：1st, pile body；11st, chamber；12nd, correction groove；13rd, gland；14th, the first mounting groove；15th, adjustment block；151st, Two mounting grooves；2nd, pipe pile head；21st, blade；22nd, storage tank；23rd, the first drive block；231st, lozenges；24th, boss；3rd, drive Bar；31st, block is abutted；32nd, mobile limited block；33rd, the second drive block；331st, leading section；4th, deviation correction mechanism；41st, correction part；411、 Supporting part；412nd, backlash compensation portion；413rd, sealing；414th, clamping ring；415th, stopper slot；5th, elastic component；6th, thrust bearing.

Embodiment

The present invention is described in further detail below in conjunction with accompanying drawing.

Embodiment one

Refering to Fig. 1, a kind of concrete tubular pile device, including cylindrical pile body 1 and it is connected to the lower end of pile body 1 and can be with respect to stake The pipe pile head 2 that body 1 rotates.The rounded chamber 11 in section is offered inside pile body 1, lower end and the outside of chamber 11 connect Logical, the upper end of chamber 11 is communicated with the rounded correction groove 12 in same section, and the diameter of correction groove 12 is greater than the straight of chamber 11 Footpath causes both to form a cascaded surface in junction, and deviation correction mechanism 4 is provided with groove 12 of rectifying a deviation, deviation correction mechanism 4 by with pile body 1 The gland 13 of upper surface connection carries out axial limiting.

Concrete tubular pile device also includes a drive mechanism, and the drive mechanism includes the cylindrical drive rod 3 in a section, Drive rod 3 is arranged in chamber 11 and can be along the axially displaced of chamber 11, and the upper part of drive rod 3 is from chamber 11 in addition Inside extend, whole deviation correction mechanism 4 is connected to the upper part of drive rod 3.

Common to refer to Fig. 1 to Fig. 3, the upper end of pipe pile head 2 has the boss 24 of a circle and set on the outer wall of pipe pile head 2 Spiral blade 21 is equipped with, the specific hand of spiral of blade 21 is right-hand screw, i.e. the precession direction A of pipe pile head 2 is up time Pin direction.In addition, the outer diameter D 1 of blade 21 is equal to or less than the outer diameter D 2 of pile body 1, the so-called outer diameter D 1 of blade 21 and pile body 1 herein Outer diameter D 2 refers to 2 points in the floor projection outer rim of blade 21 or pile body 1 of maximum line distance.

It is open and rounded section storage tank 22, pipe pile head 2 that the inside of pipe pile head 2, which is offered towards the side of pile body 1, Storage tank 22 interconnects with chamber 11 after being connected with pile body 1, the diameter of special storage tank 22 and the diameter phase of chamber 11 Together, drive rod 3 can be entered in storage tank 22 its end when being subjected to displacement along chamber 11.

Pile body 1 is provided with thrust towards the first mounting groove 14 is offered on the end face of pipe pile head 2 in first mounting groove 14 Bearing 6, the upper surface of boss 24 are connected on thrust bearing 6, and the partial receipt of boss 24 is in the first mounting groove 14；Boss 24 are exposed to the partial receipt of the first mounting groove 14 in the second mounting groove 151 that two adjustment blocks 15 are opened up, two adjustment blocks 15 Set for mirror image, be fixed on by screw at the lower surface of pile body 1, realize the connection of pipe pile head 2 and pile body 1.

Drive rod 3 is also arranged with an elastic component 5 on its external wall, and the elastic component 5 is preferably compression spring, wherein elastic component 5 one end is connected on the abutting block 31 being made into integration with drive rod 3, and the other end is connected to is fixed on chamber by welding manner At mobile limited block 32 on 11 inwalls, both block 31 and mobile limited block 32 being limited in elastic component 5 in chamber 11 are abutted； In addition, mobile limited block 32 determines the decrement of the original state of elastic component 5 in the vertical height position in chamber 11, this place The original state reference elastic component 5 of meaning is not in the case of by any external force.

Common to refer to Fig. 2, Fig. 4 and Fig. 5, drive mechanism also includes a drive division, and drive division is accommodating including being uniformly arranged on Four piece of first drive block 23 on the inwall of groove 22 and the second drive block 33, Duo Ge being uniformly arranged on the outer wall of drive rod 3 One drive block 23 is in same level, and same multiple second drive blocks 33 are in same level.First drive block 23 With a lozenges 231, lozenges 231 is tilted by the end of pipe pile head 2 towards the side direction of boss 24 1.Second drive block 33 wraps The leading section 331 towards the side of pipe pile head 2 is included, the section of the leading section 331 is roughly triangular, and drive rod 3 is along chamber 11 During generation axial displacement, above-mentioned leading section 331 can be impacted on the lozenges 231 of the first drive block 23, force the first driving Block 23 drives whole pipe pile head 2 to be rotated according to precession direction A.Particularly, the first drive block 23 and the second drive block 33 Quantity has influence on the angle that pipe pile head 2 rotates every time.

Refering to Fig. 6, deviation correction mechanism 4 includes multiple correction parts 41 being laminated mutually, and the correction part 41 includes cylindrical Supporting part 411, it is connected to the lower section of supporting part 411 and the backlash compensation portion 412 extended inward and joint gap compensation section 412 On sealing 413, wherein sealing 413 is made up of elastomeric material, and is close to the outside of drive rod 3.Under supporting part 411 Clamping ring 414 is provided with end face, the upper surface of supporting part 411 offers blocks the stopper slot 415 set for clamping ring 414, multiple Correction part 41 plays positioning and radial direction position-limiting action using the cooperation of clamping ring 414 and stopper slot 415.

Embodiment two

A kind of construction method using concrete tubular pile device in embodiment one, specifically include following steps：

Step 1, measuring stake position

Stake position unwrapping wire should control stake be discharged according to place, should be according to design requirement during the unwrapping wire of stake position, it is first determined the position of stake Relative coordinate is put, subsurface 500mm is squeezed into stake position center with bamboo stick, is drawn a circle to approve stake footpath with quick lime line.

Step 2, stake machine are in place

Using diesel pile driver, concrete tubular pile device is hung in piling machine, pipe pile head 2 is positioned at stake position center.

Step 3, piling

After concrete tubular pile device positioning, start pile sinking, pile monkey overlaps with pile body 1 and the center line of pipe pile head 2, pile of driving piles Hammer impacts drive rod 3 first so that drive rod 3 is quickly retracted into the chamber 11 of pile body 1, the second driving on drive rod 3 The leading section 331 of block 33 is applied on the lozenges 231 of the first drive block 23 and extrudes the first drive block 23, promotes pipe pile head 2 Rotated with respect to pile body 1, while pile monkey impacts integrated pushing concrete tubular pile device on pile body 1 and is driven underground, pile monkey lift The Rapid reset in the presence of elastic component 5 of drive rod 3 after rising, hammering is repeated until concrete tubular pile device reaches absolute altitude position Put, and the ceasing driving standard finally determined according to design and test pile receives hammer.

Step 4, fill concrete

Deviation correction mechanism 4 of the one-level of gland 13 in pile body 1 is pulled down, fills out embedding base concrete to chamber 11, and tap simultaneously Pile body 1 shakes the concrete sticked in the inwall of chamber 11 lower and concrete vibrating is closely knit.

Step 5, pile crown cutting

Cubic metre of earth dig to after substrate designed elevation, unnecessary pile body 1 being cut or dug with drive rod 3 and be extremely higher by than basic bottom absolute altitude 100mm。

This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this All protected in the right of invention by Patent Law.

Claims

A kind of 1. concrete tubular pile device, it is characterised in that including：

Pile body（1）, inside has the chamber being in communication with the outside（11）；

Pipe pile head（2）, it is connected to pile body（1）End and can be with respect to pile body（1）Rotate, the pipe pile head（2）Open inside It is provided with and chamber（11）The storage tank of connection（22）；

Drive mechanism, including it is arranged in chamber（11）It is interior and can be along chamber（11）The drive rod of axial displacement occurs（3）And can By drive rod（3）Along chamber（11）Pipe pile head is driven during axially reciprocating（2）With respect to pile body（1）The drive to rotate Dynamic portion, the drive division include being distributed on storage tank（22）Some first drive blocks on inwall（23）And uniform drive rod （3）Some second drive blocks on outer wall（33）, first drive block（23）With lozenges（231）, second driving Block（33）With a leading section（331）, the leading section（331）Lozenges can be forced in（231）Upper driving pipe pile head（2）Turn It is dynamic.
2. concrete tubular pile device according to claim 1, it is characterised in that the pipe pile head（2）Outer wall on also set It is equipped with spiral blade（21）, the pipe pile head（2）Direction of rotation and blade（21）Drilling direction it is identical.
3. concrete tubular pile device according to claim 2, it is characterised in that the blade（21）External diameter be less than or Equal to pile body（1）External diameter.
4. concrete tubular pile device according to claim 1, it is characterised in that the chamber（11）Inside it is provided with and forces drive Lever（3）All the time have from away from pipe pile head（2）Chamber（11）The elastic component that side departs from（5）, the drive rod（3）End Portion is from pile body（1）Chamber（11）Inside extend.
5. concrete tubular pile device according to claim 1, it is characterised in that the pile body（1）Inside it is additionally provided with correction Mechanism（4）, the deviation correction mechanism（4）Drive rod is set in including at least one（3）It is upper and along drive rod（3）Axially stacked entangles Inclined part（41）, the correction part（41）Including with drive rod（3）The sealing that outer wall abuts（413）And force sealing （413）All the time have toward drive rod（3）The backlash compensation portion of side movement tendency（412）.
6. concrete tubular pile device according to claim 5, it is characterised in that the backlash compensation portion（412）Including extremely A few bellows segment in inverted V-shaped.
7. concrete tubular pile device according to claim 5, it is characterised in that the correction part（41）Also include and gap Compensation section（412）Connected supporting part（411）, the supporting part（411）Lower surface be provided with the clamping extended perpendicularly outward Ring（414）, the supporting part（411）Upper surface offer for clamping ring（414）Block the stopper slot set（415）.
8. concrete tubular pile device according to claim 1, it is characterised in that the pipe pile head（2）Including positioned at end Boss（24）, the pile body（1）End offer for boss（24）The first accommodating mounting groove of part（14）, described first Mounting groove（14）With boss（24）Between be provided with thrust bearing（6）；The pile body（1）Two adjustment blocks including being arranged on end （15）, the adjustment block（15）Offer and supply boss（24）The second accommodating mounting groove of remainder（151）.
9. one kind uses the construction method of the concrete tubular pile device as described in any one of claim 1 ~ 8, it is characterised in that bag Include following steps：

Step 1, measuring stake position：Stake position unwrapping wire should control stake be discharged according to place, during the unwrapping wire of stake position should according to design requirement, The position relative coordinate of stake is determined first, subsurface 500mm is squeezed into stake position center with bamboo stick, with quick lime line by stake Draw a circle to approve in footpath；

Step 2, stake machine are in place：Using diesel pile driver, concrete tubular pile device is hung in piling machine, by pipe pile head（2）It is fixed Positioned at stake position center；

Step 3, piling：After concrete tubular pile device positioning, start pile sinking, pile monkey and pile body（1）And pipe pile head（2）Center line weight Close, pile monkey impacts drive rod first during piling（3）So that drive rod（3）Quickly it is retracted into pile body（1）Chamber（11） It is interior, drive rod（3）On the second drive block（33）Leading section（331）It is applied to the first drive block（23）Lozenges（231） The first drive block of upper extruding（23）, promote pipe pile head（2）With respect to pile body（1）Rotate, while pile monkey impacts pile body（1）On Integrated pushing concrete tubular pile device is driven underground, and hammering is repeated until concrete tubular pile device reaches absolute altitude position in pile monkey Put；

Step 4, fill concrete：To chamber（11）Embedding base concrete is inside filled out, and taps pile body（1）It will stick in chamber（11）It is interior The concrete of wall shakes lower and concrete vibrating is closely knit；

Step 5, pile crown cutting：The earthwork is dug to substrate designed elevation, the pile body beyond absolute altitude（1）Part cut or chisel to than Absolute altitude is higher by 100mm.