阅读说明：本技术 一种预应力混凝土竹节桩结构及其施工方法 (Prestressed concrete bamboo joint pile structure and construction method thereof ) 是由 卢磊 费恺 陈国林 张华� 尤慧 左廷林 万朝华 王涛 王云 狄玉龙 李朝旭 于 2021-09-18 设计创作，主要内容包括：本申请涉及一种预应力混凝土竹节桩结构及其施工方法,属于桩基的技术领域,其包括桩体,桩体一端内壁上固定有垫板,桩体远离垫板的另一端内壁上可拆卸连接有导流板,垫板和导流板均沿桩体内壁设置一周,垫板上可拆卸连接有胶包,胶包位于垫板背离导流板的侧壁上,且在垫板上沿桩体内壁设置一周,胶包内填充有密封材料；导流板一端与桩体内壁可拆卸连接,另一端沿远离垫板方向向靠近桩体中心线方向倾斜设置,导流板背离垫板的侧壁上固定有引流针,引流针设置有多个,相邻引流针在导流板上等间距分布；相邻桩体端部互相抵接后,引流针的针尖一端穿入所靠近的胶包,本申请具有减少接桩工序的繁琐程度,达到提升竹节桩接桩便利性的效果。(The application relates to a prestressed concrete bamboo joint pile structure and a construction method thereof, belonging to the technical field of pile foundations, and comprising a pile body, wherein a base plate is fixed on the inner wall of one end of the pile body, a guide plate is detachably connected on the inner wall of the other end, far away from the base plate, of the pile body, the base plate and the guide plate are both arranged in a circle along the inner wall of the pile body, a rubber bag is detachably connected on the base plate, the rubber bag is positioned on the side wall, far away from the guide plate, of the base plate, the base plate is arranged in a circle along the inner wall of the pile body, and the rubber bag is filled with a sealing material; one end of the guide plate is detachably connected with the inner wall of the pile body, the other end of the guide plate is obliquely arranged in the direction close to the central line of the pile body along the direction far away from the base plate, a plurality of drainage needles are fixed on the side wall of the guide plate far away from the base plate, and the adjacent drainage needles are distributed on the guide plate at equal intervals; after adjacent pile body tip butt each other, the needle point one end of drainage needle penetrates the package of gluing that is close to, and this application has the loaded down with trivial details degree that reduces the pile extension process, reaches the effect that promotes bamboo joint stake pile extension convenience.)

1. The utility model provides a prestressed concrete bamboo joint pile structure which characterized in that: the pile comprises a pile body (1), a backing plate (2) is fixed on the inner wall of one end of the pile body (1), a guide plate (3) is detachably connected to the inner wall of the other end, far away from the backing plate (2), of the pile body (1), the backing plate (2) and the guide plate (3) are arranged in a circle along the inner wall of the pile body (1), a rubber bag (4) is detachably connected to the backing plate (2), the rubber bag (4) is located on the side wall, far away from the guide plate (3), of the backing plate (2), a circle is arranged on the backing plate (2) along the inner wall of the pile body (1), and a sealing material is filled in the rubber bag (4); one end of the guide plate (3) is detachably connected with the inner wall of the pile body (1), the other end of the guide plate is obliquely arranged in the direction close to the central line of the pile body (1) along the direction far away from the backing plate (2), a plurality of drainage needles (31) are fixed on the side wall of the guide plate (3) far away from the backing plate (2), and the adjacent drainage needles (31) are distributed on the guide plate (3) at equal intervals; after the end parts of the adjacent pile bodies (1) are mutually abutted, one end of the needle point of the drainage needle (31) penetrates into the close rubber bag (4).

2. The prestressed concrete bamboo joint pile structure according to claim 1, characterized in that: the section of the guide plate (3) along the length direction of the pile body (1) is arc-shaped plate-shaped, and the arc-shaped convex surface faces the central line direction of the pile body (1); a squeezing pad (32) is fixed at one end of the guide plate (3) far away from the pile body (1), and the squeezing pad (32) is made of elastic materials; after the end parts of the adjacent pile bodies (1) are mutually abutted, the side wall of the extrusion pad (32) departing from the guide plate (3) is abutted against the base plate (2), the extrusion pad (32) is in a compression state at the moment, and the abutting part of the extrusion pad (32) and the base plate (2) is the position of the base plate (2) far away from the inner wall of the pile body (1).

3. The prestressed concrete bamboo joint pile structure according to claim 2, characterized in that: the rubber bag (4) is made of elastic materials, and the rubber bag (4) covers the side wall of the whole base plate (2).

4. The prestressed concrete bamboo joint pile structure according to claim 1, characterized in that: the terminal surface at pile body (1) both ends is the slope terminal surface, pile body (1) terminal surface of guide plate (3) department to pile body (1) inner wall department is the starting point, along being close to this pile body (1) upper padding plate (2) one end department outwards sets up to keeping away from pile body (1) central line direction slope, pile body (1) terminal surface and the pile body (1) terminal surface adaptation of guide plate (3) department of pile body (2) department, and pile body (1) terminal surface and another pile body (1) guide plate (3) one end terminal surface of backing plate (2) one end can inseparable butt promptly.

5. The prestressed concrete bamboo joint pile structure according to claim 1, characterized in that: the glue bag (4) is inserted and embedded with partition panels (41), the partition panels (41) are arranged in a plurality of modes, adjacent partition panels (41) are arranged at equal intervals along the length direction of the glue bag (4), and the partition panels (41) are used for partitioning the inner space of the glue bag (4).

6. The prestressed concrete bamboo joint pile structure according to claim 5, wherein: partition panel (41) one side outer wall exposes in the air, be fixed with lug (42) on partition panel (41), lug (42) are located partition panel (41) exposed lateral wall, slide (21) have been seted up on backing plate (2), slide (21) are seted up along pile body (1) direction of radius, lug (42) are inserted and are inlayed in slide (21) and slide along slide (21) length direction, extrusion pad (32) just offer breach (321) to partition panel (41) department, breach (321) are used for extrusion pad (32) and partition panel (41) not to produce the hindrance.

7. The prestressed concrete bamboo joint pile structure according to claim 1, characterized in that: the pile is characterized in that a sleeve (11) is fixed on the inner wall of the pile body (1) in a pre-buried mode, threads are formed in the sleeve (11), a ring (33) is fixed at one end, fixed to the inner wall of the pile body (1), of the guide plate (3), threads are formed in the outer wall of the ring (33), and the ring (33) is in threaded connection with the sleeve (11).

8. The prestressed concrete bamboo joint pile structure according to claim 1, characterized in that: the big nut (6) is internally provided with a rubber bag (5), the rubber bag (5) is filled with sealing materials, and the spring (61) is sleeved outside the rubber bag (5).

9. The prestressed concrete bamboo joint pile structure according to claim 8, wherein: the plastic bag (5) is composed of a fragile part (51) and a pressure-resistant part (52), the toughness and the deformability of the material adopted by the fragile part (51) are lower than those of the material adopted by the pressure-resistant part (52), and the fragile part (51) is arranged at one end of the plastic bag (5) penetrating into the large nut (6).

10. A construction method of a prestressed concrete bamboo joint pile structure is characterized by comprising the following steps: the method comprises the following steps:

s1, measuring and positioning;

s2, entering, installing and debugging equipment;

s3, entering a pile body (1) and stacking;

s4, positioning a pile driver, and mounting a rubber bag (4) and a guide plate (3) on a pile body (1);

s5, pile pressing;

s6, pile splicing and pile feeding;

s7, backfilling pile holes and shifting a pile driver.

Technical Field

The application relates to the technical field of pile foundations, in particular to a prestressed concrete bamboo joint pile structure and a construction method thereof.

Background

The foundation is the heaviest, and the use of engineering piles in the construction project is a common foundation treatment method in the engineering field. Through years of practice, various problems encountered in the past construction are overcome, a novel mechanically-connected prestressed concrete bamboo joint pile is produced, and unprecedented innovation is brought to the construction quality of pile foundation engineering.

The bamboo joint pile is a prestressed concrete centrifugal pile, the outer wall of the bamboo joint pile is provided with transverse or longitudinal ribs, adjacent pile sections adopt mechanical connection mechanisms, and sealing materials are coated at the connection positions, so that the adjacent pile sections form a complete and continuous pile body. The common sealing material is mainly epoxy resin, the brushing time of the sealing material is controlled within 2min, the sealing material is composed of epoxy resin, aromatic amine and the like according to the proportion of 1:0.6, and the sealing material is used within 4h after being stirred.

The mechanical connection of bamboo joint stake adopts "top screw pushes up down" pile extension, the pre-buried little nut that has of tip of a bamboo joint stake, threaded connection has the inserted bar on the little nut, the pre-buried big nut that has of tip of another bamboo joint stake, install spring and base pad in the big nut, then install card and middle nut, middle nut and big nut threaded connection, when adjacent bamboo joint stake pile extension, the inserted bar aims at middle nut, then the inserted bar inserts in middle nut, adjacent bamboo joint stake butt accomplishes mechanical connection.

In view of the above related technologies, the inventor believes that a worker needs to go to the position below a pile driver when connecting a pile, a sealing material is smeared at the end part of a pile head exposed out of the ground, and then the pile connecting process is continued after smearing is finished.

Disclosure of Invention

In order to carry out the pile splicing procedure smoothly, reduce the loaded down with trivial details degree of pile splicing procedure, reach the effect that promotes bamboo joint pile splicing convenience, this application provides a prestressed concrete bamboo joint pile structure and construction method thereof.

In a first aspect, the application provides a prestressed concrete bamboo joint pile structure, which adopts the following technical scheme:

a prestressed concrete bamboo joint pile structure comprises a pile body, wherein a base plate is fixed on the inner wall of one end of the pile body, a guide plate is detachably connected to the inner wall of the other end, away from the base plate, of the pile body, the base plate and the guide plate are arranged along the inner wall of the pile body for a circle, a rubber bag is detachably connected to the base plate, the rubber bag is located on the side wall, away from the guide plate, of the base plate, a circle is arranged on the base plate along the inner wall of the pile body, and a sealing material is filled in the rubber bag; one end of the guide plate is detachably connected with the inner wall of the pile body, the other end of the guide plate is obliquely arranged in the direction close to the central line of the pile body along the direction far away from the base plate, a plurality of drainage needles are fixed on the side wall of the guide plate far away from the base plate, and the adjacent drainage needles are distributed on the guide plate at equal intervals; after the end parts of the adjacent pile bodies are mutually abutted, one end of the needle point of the drainage needle penetrates into the close rubber bag.

Through adopting above-mentioned technical scheme, when the bamboo joint pile is under construction, adjacent pile body just can to carrying out mechanical connection, the centre need not the workman and carries out the process of pile body tip brush sealing material, the in-process of adjacent pile body tip butt, the guide plate is close to the package of gluing on the adjacent pile body gradually, the drainage needle also is close to the package of gluing on the adjacent pile body gradually this moment, when adjacent pile body tip is about to the butt, the drainage needle will glue the package and stab, the sealing material in the package of gluing complies with the drainage needle and the guide plate trickles to the terminal surface of pile body, then the inseparable butt of adjacent pile body terminal surface, reached and guaranteed that the workman need not to go the pile driver below safely, and the pile splicing process goes on smoothly, reduce the loaded down with trivial details degree of pile splicing process, promote the effect of bamboo joint pile splicing convenience.

Optionally, the cross section of the guide plate along the length direction of the pile body is arc-shaped plate-shaped, and the arc-shaped convex surface faces the central line direction of the pile body; a squeezing pad is fixed at one end of the guide plate, which is far away from the pile body, and the squeezing pad is made of elastic materials; after the end parts of the adjacent piles are mutually abutted, the side wall of the extrusion pad departing from the guide plate is abutted against the base plate, the extrusion pad is in a compression state at the moment, and the abutting part of the extrusion pad and the base plate is the base plate and is far away from the inner wall of the pile.

Through adopting above-mentioned technical scheme, the cross-section can be better for the guide effect to sealing material of arc platelike guide plate, and the figurative design of guide plate provides suitable position for the existence of crushing pad simultaneously, makes the crushing pad can with the backing plate butt, and the existence of crushing pad has avoided sealing liquid to trickle inside the pile body because of sputtering reason.

Optionally, the rubber bag is made of an elastic material, and the rubber bag covers the side wall of the whole base plate where the rubber bag is located.

Through adopting above-mentioned technical scheme, the package of gluing that elastic material made transports more easily, the damaged probability in transporting of reduction, after adjacent pile body tip butt each other, the part that is located between extrusion pad and the backing plate is glued the package and is extruded by extrusion pad and backing plate, and the sealing material in the package of gluing this moment concentrates to guide plate concave surface department, lets the package of gluing more inflation simultaneously, and the drainage needle of being convenient for punctures the package of gluing.

Optionally, the terminal surface at pile body both ends is the tip face, and the pile body terminal surface of guide plate department to pile body inner wall department is the starting point, outwards sets up to keeping away from the slope of pile body central line direction along being close to this pile body upper padding plate one end department, and the pile body terminal surface of backing plate department and the pile body terminal surface adaptation of guide plate department, the pile body terminal surface of backing plate one end and another pile body guide plate one end terminal surface can closely butt promptly.

Through adopting above-mentioned technical scheme, when the pile body was under construction, the pile body was vertical state, under the vertical state, glues the package damage back, sealing material trickled to the pile body terminal surface along the guide plate on, the inside slope of pile body outside direction of guide plate department pile body terminal surface along the pile body sets up downwards this moment to whole pile body terminal surface is flowed to as far as along the slope trend of pile body terminal surface to sealing material, strengthens the abundant degree that sealing material was filled between adjacent pile body.

Optionally, insert on the gluey package and inlay and be fixed with the partition panel, the partition panel is provided with a plurality ofly, and adjacent partition panel sets up along gluey package length direction equidistance, and the partition panel is used for gluey package inner space to cut off.

Through adopting above-mentioned technical scheme, the partition panel will glue the package and cut into a plurality of independent spaces, after the drainage needle that glues the package and be put up different positions stabs, the space of partition makes the sealing material in the package of gluing reduce the hindrance that produces when flowing each other, makes the package of gluing in every position all flow out sealing material, promotes the even degree that pile body terminal surface sealing material is filled.

Optionally, the outer wall of one side of the partition panel is exposed in the air, a convex block is fixed on the partition panel, the convex block is located on the exposed side wall of the partition panel, a slide way is formed in the base plate, the slide way is formed in the radial direction of the pile body, the convex block is inserted and embedded in the slide way and slides in the length direction of the slide way, the extrusion pad is provided with a notch right facing the partition panel, and the notch is used for preventing the extrusion pad from blocking the partition panel.

Through adopting above-mentioned technical scheme, the partition panel not only plays the effect of cutting off gluey package inner space, still regard as the connection structure who glues package and backing plate simultaneously, makes to glue the package and can mill prefabricate in batches, at the pile body job site direct quick installation can, the skeleton of gluing the package is also regarded as in the existence of partition panel, has promoted the shock resistance who glues the package, is convenient for glue the package transportation.

Optionally, a sleeve is fixed on the inner wall of the pile body in a pre-buried mode, a thread is formed in the sleeve, a ring is fixed at one end, fixed to the inner wall of the pile body, of the guide plate, a thread is formed in the outer wall of the ring, and the ring is in threaded connection with the sleeve.

Through adopting above-mentioned technical scheme, through ring and telescopic threaded connection, can install the guide plate fast before the pile body construction, the pile body and the guide plate of being convenient for are prefabricated in advance and are transported in the mill.

Optionally, a rubber bag is placed in the large nut, a sealing material is filled in the rubber bag, and the spring ring is sleeved outside the rubber bag.

Through adopting above-mentioned technical scheme, when adjacent pile body connects the stake, the inserted bar is inserted and is inlayed in the big nut of adjacent pile body, and the inserted bar extrudees the plastic bag and breaks the plastic bag to sealing material in the plastic bag spills and fills the hole in the big nut, and sealing material solidifies the back and further fixes inserted bar and big nut, finally realizes promoting adjacent pile body firm in connection's effect.

Optionally, the plastic bag comprises fragile portion and withstand voltage portion, and the material toughness and the deformability that fragile portion adopted are less than the material that withstand voltage portion adopted, and the plastic bag is deep into inside one end of big nut and is fragile portion.

Through adopting above-mentioned technical scheme, the different positions of plastic bag adopt different materials to make, when the inserted bar pushed down the plastic bag, fragile portion broke earlier, and sealing material began to be filled from big nut bottom, will arrive the gas extrusion in the big nut to reach the effect that sealing material will big nut inside packing more closely knit.

In a second aspect, the application provides a construction method of a prestressed concrete bamboo joint pile structure, which adopts the following technical scheme:

a construction method of a prestressed concrete bamboo joint pile structure comprises the following steps:

s1, measuring and positioning;

s2, entering, installing and debugging equipment;

s3, entering a pile body and stacking;

s4, positioning a pile driver, and mounting a rubber bag and a guide plate on a pile body;

s5, pile pressing;

s6, pile splicing and pile feeding;

s7, backfilling pile holes and shifting a pile driver.

By adopting the technical scheme, the guide plate and the rubber bag replace the situation that workers move to the lower part of the pile driver to brush sealing materials on the pile head when pile splicing is carried out, so that the processes at the position are reduced, the safety of the workers is ensured, and the construction process is saved.

In summary, the present application includes at least one of the following beneficial technical effects:

due to the existence of the rubber bag, the guide plate and the drainage needle, the complexity of pile splicing procedures is reduced, and the effect of improving the convenience of bamboo joint pile splicing is achieved;

the existence of the rubber bag improves the filling compactness of the sealing material in the large nut.

Drawings

FIG. 1 is a vertical cross-sectional view of a pile body of a bamboo joint pile in the prior art;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 4 is a partial structural sectional view of the adjacent pile body head and tail end portions;

FIG. 5 is an exploded view of a part of a structure at a partition panel;

FIG. 6 is a sectional view of a part of the structure showing the staggered arrangement of the guide plate and the end of the pile body;

fig. 7 is a partially enlarged view of a portion B in fig. 4.

Description of reference numerals: 1. a pile body; 11. a sleeve; 2. a base plate; 21. a slideway; 3. a baffle; 31. a drainage needle; 32. pressing the cushion; 321. a notch; 33. a loop; 4. packaging with glue; 41. a partition panel; 42. a bump; 5. a plastic bag; 51. a frangible portion; 52. a pressure resistant part; 6. a large nut; 61. a spring; 62. a base pad; 7. a middle nut; 71. a card; 8. a small screw cap; 81. and (4) inserting the rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

Referring to fig. 1 and 2, the inside pre-buried many reinforcing bars that have of pile body 1, adjacent reinforcing bar uses pile body 1 central line to be centre of a circle etc. centre of a circle angular distribution, the reinforcing bar sets up along 1 length direction of pile body, every reinforcing bar one end all is fixed with big nut 6, the other end all is fixed with little nut 8, big nut 6 and little nut 8 are all pre-buried in pile body 1, the screw has been seted up to big nut 6 inner wall, spring 61 and base pad 62 have been placed to big nut 6 inside, threaded connection has middle nut 7 on the big nut 6, card 71 has been placed between middle nut 7 and the spring 61, card 71 is whole to be the ring form for the circle, be spring 61 promptly between big nut 6 to middle nut 7 in proper order, base pad 62 and card 71, threaded connection has inserted bar 81 on the little nut 8, inserted bar 81 place salient in pile body 1 terminal surface. When the adjacent pile body 1 is connected, one end of the inserting rod 81 positioned on the upper pile body 1 is just opposite to the middle nut 7 positioned on the lower pile body 1, the end part of the inserting rod 81 sequentially penetrates through the middle nut 7 and the clamping piece 71, and the end surfaces of the adjacent pile bodies 1 are mutually abutted.

The embodiment of the application discloses prestressed concrete bamboo joint pile structure.

For convenience of description, the following description is given in a state that the pile body 1 is vertical, and referring to fig. 3 and 4, a backing plate 2 is fixed on the inner wall of one end of the pile body 1, the backing plate 2 is arranged in a circle along the inner wall of the pile body 1, the backing plate 2 is in a ring plate shape, and a rubber bag 4 is arranged on the backing plate 2.

Referring to fig. 4 and 5, glue package 4 and set up along 2 length direction of backing plate, glue package 4 and also set up a week along 1 inner wall of pile body promptly and be the ring form, it is fixed with partition panel 41 to insert on 4 to glue package, partition panel 41 is provided with a plurality ofly, adjacent partition panel 41 equidistance distributes, partition panel 41 separates into a plurality ofly with 4 inner space of glue package, partition panel 41 only exists one side outer wall and exposes in the air, and expose and be fixed with lug 42 on the outer wall in the air, slide 21 has been seted up on backing plate 2, slide 21 is seted up along 1 direction of radius of pile body, and open the terminal surface that deviates from 1 inner wall one end of pile body 2 through backing plate, lug 42 slides in slide 21. The bump 42 is a T-shaped bump 42 in the present embodiment. The inner space of the glue bag 4 is filled with a sealing material, the sealing material in the embodiment adopts the Tascheni structural glue, the quality guarantee period of the Tascheni structural glue is 9-10 months, the quality guarantee period of the structural glue is longer, the cost of the alcohol type glue is low, the cost of the oxime type glue is high, and the cohesiveness of the oxime type glue is stronger than that of the alcohol type glue. The rubber bag 4 is made of elastic material, and in this embodiment, the rubber bag 4 is made of rubber material.

Referring to fig. 4, the end face of pile body 1 near one end of backing plate 2 is an inclined end face, the inclined direction is set downwards along the direction of keeping away from backing plate 2 from the direction of pile body 1 inner wall to pile body 1 outer wall direction, the end face of inserted link 81 fixed on pile body 1 is the pile body 1 end face that backing plate 2 is close to, inserted link 81 remains vertical state all the time, and is not influenced by the setting of pile body 1 end face inclination. The end face of one end of the pile body 1, which is far away from the backing plate 2, is also obliquely arranged, and the oblique direction is obliquely downwards arranged from the inner wall of the pile body 1 to the outer wall of the pile body 1, namely the end parts of the adjacent pile bodies 1 can be closely abutted end to end.

Referring to fig. 4, a flow guide plate 3 is fixed on the inner wall of one end of the pile body 1 far away from the backing plate 2, a sleeve 11 is embedded on the inner wall of the pile body 1, a ring 33 is fixed on the flow guide plate 3, the ring 33 is fixed on the end part of one end of the flow guide plate 3, and the ring 33 is in threaded connection with the sleeve 11. The vertical section of the guide plate 3 is arc-shaped, and the arc convex surface faces the central line direction of the pile body 1. One of ring 33 is kept away from to guide plate 3 serves and is fixed with extrusion pad 32, and extrusion pad 32 is provided with a week on the guide plate 3 terminal surface, and extrusion pad 32 that extrusion pad 32 adopted elastic material to make adopts the rubber material to make in this embodiment, and rubber can promote extrusion pad 32's bulk strength according to the thickness of using, promotes extrusion pad 32's bulk strength under the prerequisite of guaranteeing elastic deformation. Be fixed with drainage needle 31 on the 3 arc concave surfaces of guide plate, drainage needle 31 is vertical sets up, and drainage needle 31 overall shape is half of the assembly of hollow circular cone and pipe, and is half of following drainage needle 31 length direction partd. The drainage needle 31 is designed to reduce the phenomenon that the sealing material in the rubber bag 4 can not smoothly flow out after the drainage needle 31 is inserted into the rubber bag 4.

Referring to fig. 4 and 5, a plurality of drainage needles 31 are provided, and adjacent drainage needles 31 are distributed on the guide plate 3 at equal circle center angles by taking the central line of the pile body 1 as a central axis. When adjacent pile body 1 butt each other end to end, extrusion pad 32 at first contacts with gluey package 4 and extrudes butt on backing plate 2 with the gluey package 4 of the just right part of extrusion pad 32, drainage needle 31 begins to puncture gluey package 4 this moment, sealing material in gluey package 4 is complied with drainage needle 31 and is glued the package 4 breach department and begin to flow, and is complied with the molding of guide plate 3 and the slope of pile body 1 terminal surface, flow on pile body 1 terminal surface, then extrusion pad 32 further compresses, the inseparable butt of adjacent pile body 1 terminal surface. Wherein, the extrusion pad 32 is provided with a gap 321, when the extrusion pad 32 is abutted against the backing plate 2, the existence of the gap 321 avoids the partition plate 41, and the effect that the extrusion pad 32 does not generate obstruction with the partition plate 41 is achieved.

Referring to fig. 4 and 6, the side wall of the ring 33 close to the end face of the pile body 1 and the side wall of the sleeve 11 close to the end face of the pile body 1 are always coplanar, the end face of the sleeve 11 close to the pile body 1 can be flush with the end face of the pile body 1, and at the moment, the sealing material on the guide plate 3 can smoothly flow from the guide plate 3 to the end face of the pile body 1; the end face of the sleeve 11 close to the pile body 1 can be not parallel and level with the end face of the pile body 1, namely the end face of the sleeve 11 close to the pile body 1 is sunken in the pile body 1, at the moment, the sealing material on the guide plate 3 flows to the end face of the pile body 1, the staggered platform between the sleeve 11 and the pile body 1 needs to be filled firstly, and then the staggered platform flows to the end face of the pile body 1, at the moment, the staggered platform between the sleeve 11 and the pile body 1 is filled with the sealing material, when the pile body 1 is used in a soil region with large underground moisture, the sealing material in the staggered platform plays a role in further sealing, and plays a role in blocking moisture permeating into the pile body 1 from the joint of the adjacent pile body 1.

Referring to fig. 4 and 7, the plastic bag 5 is further placed inside the large nut 6, the plastic bag 5 is composed of a fragile portion 51 and a pressure-resistant portion 52, and the fragile portion 51 has weak pressure resistance, deformation resistance and tearing resistance compared with the pressure-resistant portion 52, and this embodiment can be implemented by the thickness of the plastic bag 5 when the plastic bag 5 is manufactured. The packing is filled with sealing material in the plastic bag 5, and spring 61 ring cover is at the plastic bag 5 outer wall, and withstand voltage portion 52 and base pad 62 butt, when inserted bar 81 inserts big nut 6 inside, the withstand voltage portion 52 of extrusion then crushes the portion 51 of will easily smashing, and the sealing material in the plastic bag 5 begins to be full of from the bottom of big nut 6 inner space, plays discharge big nut 6 inner space air, makes the more closely knit effect of sealing material packing.

The embodiment of the application also discloses a construction method of the prestressed concrete bamboo joint pile structure.

The method comprises the following steps:

s1, measuring and positioning; the method comprises the steps of establishing a measurement control network according to coordinate points and level points provided by a planning department, setting coordinate and elevation control points outside a pile sinking influence range of a construction site, setting building axes and angle piles according to the control points, measuring pile positions according to a pile position layout, marking the centers of the pile positions by steel bars or bamboo sticks, and controlling pile positioning deviation within 10mm, wherein the measured pile positions are shifted in order to prevent a pile driver from extruding soil body by self weight when the pile driver is in position, and checking is correct before formal pile pressing after the pile driver is in position.

S2, entering, installing and debugging equipment; i.e. commissioning of the pile driver and approach of other auxiliary equipment.

S3, entering a pile body 1 and stacking; referring to fig. 3 and 4, after the pile body 1 leaves the factory to the construction site, the prefabricated pile leaving quality certificate and the qualification certificate should be checked and collected in batches. And is accompanied with relevant data such as test report, detection report, etc.; the pile bodies 1 are respectively piled according to specifications, are arranged within the range of the hoisting working radius of piling operation, and avoid steering in consideration of the piling direction. Pile piling layers are not suitable to exceed 3 layers, the position of the fulcrum skid is determined according to the position of the lifting point, and the skids on all layers are on the same vertical line.

S4, positioning a pile driver, and mounting a rubber bag 4 and a guide plate 3 on the pile body 1; the installation of the rubber bag 4 can be completed by sliding the convex block 42 into the slideway 21; the ring 33 is connected with the sleeve 11 by screw thread, thus completing the installation of the guide plate 3.

S5, pile pressing; during the hoisting and transferring process of the pile body 1, operators need to carry out secondary recheck on the pile position by a rectangular coordinate method according to a set control point, the pile body 1 is placed down after the secondary rechecking is carried out, the deviation between the center point of the pile body 1 and the pile position is controlled within 20mm, after the pile end enters 500mm of a soil layer, two theodolites or plumb lines which mutually form 90 degrees are used for adjusting the pile frame of the pile machine to be in a vertical position, then the verticality of the pile is adjusted (the theodolites are generally erected beyond 15m away from the pile machine), so that the pile frame and the pile body are kept parallel, the precision error is smaller than 1 percent of the pile length (the verticality deviation when the pile is inserted into the ground is not more than 0.5 percent), the pile can be pressed, tracking and monitoring are carried out in the pile pressing process, and the pile frame is commanded to keep the precision.

S6, pile splicing and pile feeding; inserting the inserting rod 81 on the upper pile body 1 to the middle nut 7 on the lower pile body 1, slowly inserting, strictly prohibiting collision, and after inserting, having no gap between the interfaces of the adjacent pile bodies 1.

S7, backfilling pile holes and shifting a pile driver.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.