CN211395661U

CN211395661U - Prefabricated combined pile

Info

Publication number: CN211395661U
Application number: CN201921875142.7U
Authority: CN
Inventors: 张华�; 梁亮; 朱斌
Original assignee: Suzhou Water Conservancy Design And Research Co ltd
Current assignee: Suzhou Water Conservancy Design And Research Co ltd
Priority date: 2019-11-02
Filing date: 2019-11-02
Publication date: 2020-09-01
Anticipated expiration: 2029-11-02

Abstract

The utility model discloses a prefabricated combined pile, it relates to a combined pile, aims at solving the technical problems of large construction difficulty and long period in the prior art, and the key points of the technical scheme are that the combined pile comprises a pile body, a grouting channel is arranged on the top wall of the pile body and along the axial direction, a grouting hole communicated with the grouting channel is arranged on the side wall of the pile body, a tip is arranged on the bottom wall of the pile body, a plurality of cutting cone blocks are uniformly arranged on the side wall of the pile body, a plurality of cutting blade plates are uniformly arranged on the side wall of the pile body, and the cutting blade plates are positioned on one side of the cutting cone blocks away from the tip; during construction, pile sinking equipment impacts a pile body, the pile body chisels the earth surface to enter the ground bottom by utilizing the tip, and then the excavation conical block and the excavation blade plate cut the ground bottom soil layer through the sharp part of the pile body, so that the ground bottom is excavated in an auxiliary manner, and the ground bottom excavation capacity of the pile body is enhanced. Through the technical scheme, the effects of reducing the construction difficulty of the prefabricated combined pile, shortening the construction period and improving the construction efficiency are achieved.

Description

Prefabricated combined pile

Technical Field

The utility model relates to a composite pile, more specifically say, it relates to a prefabricated composite pile.

Background

The prefabricated combined pile is made of various materials and various forms (such as wooden pile, concrete square pile, prestressed concrete tubular pile and steel pile) in a factory or a construction site, and is driven, pressed or vibrated into the soil by pile sinking equipment.

Chinese patent with publication number CN208039240U discloses a composite pile, which comprises a prefabricated pile core and a stone body wrapped outside the prefabricated pile core, wherein the prefabricated pile core is formed by connecting a plurality of prefabricated piles in sections, rigid connecting plates are arranged at the pile end, the pile top and the section connecting parts of the prefabricated pile core, the prefabricated pile is provided with a large section end and a small section end, and the section area of the prefabricated pile gradually decreases from the large section end to the small section end along the axis. The utility model discloses a combined pile structure is favorable for the precast pile and the calculus body to be tightly bonded to form a whole body and prevent the contact surface of the precast pile and the calculus body from sliding, the effective pile diameter can be enlarged, and the bearing capacity of a single pile is greatly increased compared with that of a common precast pile; in addition, the bearing capacity of the single pile can be estimated through a simple standard penetration test, the calculation process is simple and convenient, and the calculation result is reliable.

The technical scheme has the following problems: because the cross-sectional area of the bottom end of the precast pile is large, pile sinking is difficult, and drilling can be completed on hard ground by special drilling equipment, the construction difficulty is large, the period is long, and the efficiency is low in the construction process of the technology.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a prefabricated composite pile, it has the construction degree of difficulty little, and the cycle is short, efficient advantage.

The above object of the present invention can be achieved by the following technical solutions:

a prefabricated combined pile comprises a pile body, wherein a grouting channel is axially arranged on the top wall of the pile body, a plurality of grouting holes are formed in the side wall of the pile body, and the grouting holes are communicated with the grouting channel;

be equipped with most advanced on the pile body diapire, the one side that is close to most advanced on the pile body lateral wall evenly is equipped with a plurality of cutting awl piece, the pile body lateral wall evenly is equipped with a plurality of cutting board, cutting board sets up along the pile body axial, cutting board is located one side that cutting awl piece kept away from most advanced.

Through adopting above-mentioned technical scheme, when the construction, pile sinking equipment strikes the pile body roof, utilizes the most advanced on the pile body diapire, aims at and chisels out the earth's surface to the pile body gets into the ground end fast, under pile sinking equipment strikes repeatedly, and the pile body constantly gos deep into the ground end, cuts out the ground soil layer through the sharp-pointed position of self with the cutting board of cutting out, and supplementary excavation ground end, thereby strengthen the ability that prefabricated combination pile cut out the ground end, and then improve the efficiency of construction.

After pile sinking is completed, the cutting blade plates and the cutting conical blocks on the side walls of the pile body are inserted into the ground soil layer, high-pressure grouting equipment is utilized to perform grouting in the grouting channel, slurry seeps out of the outer side wall of the pile body through the grouting holes, and the slurry is solidified, so that the cutting blade plates and the cutting conical blocks are tightly combined with the ground soil layer, the combination strength of the pile body and the ground is further enhanced, and the anti-compression and anti-pulling effects of the pile body are improved.

Furthermore, reinforcing plates in arc shapes are arranged on two sides of the cutting blade plate, and the reinforcing plates are arranged along the axial direction of the pile body.

By adopting the technical scheme, the strength of the cutting blade plate is enhanced by utilizing the reinforced plate in the shape of the circular arc, and the possibility of breaking the cutting blade plate in the pile sinking process is reduced.

Further, a hard knife tip is coated on the outer side wall of the tip.

By adopting the technical scheme, the hard tool tip is utilized, the possibility that the pile body chisels the hard ground bottom is increased, and the capability of the pile body for chiseling the ground bottom soil layer is increased, so that the construction difficulty is reduced, and the construction period is shortened.

Furthermore, be equipped with the striking lid on the pile body roof, be equipped with the slip casting mouth on the striking lid top wall, the slip casting mouth sets up with slip casting passageway intercommunication.

Through adopting above-mentioned technical scheme, when sinking the pile, pile sinking equipment strikes the striking lid repeatedly, can transmit the impact force of pile sinking equipment to the pile body, can reduce the direct impact of pile sinking equipment to the pile body again, reduces the possibility that pile sinking equipment damaged the pile body.

Furthermore, two ring grooves are formed in the side wall of the pile body and are respectively located at two ends of the cutting blade plate.

Through adopting above-mentioned technical scheme, when sinking the pile, utilize the annular, reduce the area of contact of pile body lateral wall and ground soil layer, when reducing the pile sinking, ground soil layer is to the frictional resistance of pile body lateral wall to reduce the construction degree of difficulty, improve the efficiency of construction.

Furthermore, a chamfer is arranged at the junction of the annular groove and the pile body.

Through adopting above-mentioned technical scheme, the pile sinking in-process, the soil layer that gets into in the annular passes through the guidance quality of chamfer to leave the annular smoothly, and then reduce the resistance that the pile body received, reduce the construction degree of difficulty.

Furthermore, a plurality of reinforcing rods and a plurality of reinforcing ribs are uniformly arranged on the bottom wall of the annular groove respectively, the reinforcing rods and the reinforcing ribs are uniformly distributed along the circumferential direction of the pile body, the reinforcing rods are positioned above the reinforcing ribs, and one end of each reinforcing rod, which is far away from the bottom wall of the annular groove, is connected with one end of each reinforcing rib, which is far away from the bottom wall of the annular groove; and annular groove grouting holes are formed in the side wall of the chamfer and communicated with the grouting channel.

Through adopting above-mentioned technical scheme, after accomplishing the pile sinking, stiffener, strengthening rib insert the ground bed soil layer and can insert the ground bed soil layer smoothly, and the thick liquid of pouring into in the slip casting passageway oozes and is full of the annular through the annular slip casting hole in, treats the thick liquid solidification back, and stiffener, strengthening rib and ground bed soil layer combine closely to improve pile body and ground bed soil layer combination degree, increase the effect of pile body self resistance to compression resistance to plucking.

Furthermore, be equipped with the beaded finish in the annular, be equipped with the space that supplies the beaded finish to pass through between stiffener and the strengthening rib, the beaded finish is connected with stiffener and strengthening rib respectively.

By adopting the technical scheme, the reinforcing rods and the reinforcing ribs are connected by the reinforcing rings, so that the strength of the reinforcing rods and the reinforcing ribs is increased, and the possibility of damaging the reinforcing rods and the reinforcing ribs in the pile sinking process is reduced; after pile sinking is completed, the reinforcing ring can be inserted into the ground bottom soil layer along with the reinforcing rods and the reinforcing ribs, after slurry is filled, the slurry is solidified, the reinforcing ring is tightly combined with the ground bottom soil layer, and the combination degree of the ground bottom soil layer and the pile body is improved easily.

Further, be equipped with a plurality of reinforcing bar, a plurality of between the relative lateral wall of annular the reinforcing bar all along pile body circumference equipartition, the reinforcing bar is connected with the beaded finish.

Through adopting above-mentioned technical scheme, after accomplishing the pile sinking, reinforcing bar and beaded finish insert the ground foundation, pour into the thick liquid back, treat that the thick liquid solidifies, reinforcing bar and ground closely combine to improve pile body and ground foundation combination degree, and then improve the effect of pile body resistance to plucking resistance to compression.

Furthermore, a plurality of ground breaking tips are arranged on the reinforcing ring and are distributed along the circumferential direction of the pile body.

Through adopting above-mentioned technical scheme, utilize broken soil point end, supplementary excavation ground soil layer, accomplish the pile sinking after, broken soil point end can insert ground soil layer, treats that the thick liquid that oozes the pile body lateral wall solidifies, broken soil point end and ground soil layer combine closely to improve pile body and soil layer combination degree, and then the effect of reinforcing pile body tensile resistance to plucking.

To sum up, the utility model discloses following beneficial effect has:

1. repeatedly impacting the top wall of the pile body through pile sinking equipment, chiseling the ground through the tip of the pile body, enabling the pile body to enter the ground bottom, piercing a soil layer through the edge and the sharp end of the piercing cone block, and cutting a soil layer through the thin edge of the cutting blade plate, so that the ground bottom chiseling capacity of the pile body is enhanced, the pile sinking difficulty is reduced, the construction efficiency is improved, after pile sinking is completed, slurry is injected, the slurry seeps out of the outer side wall of the pile body through a slurry injection channel and a slurry injection hole, the pile body is tightly combined with the ground bottom soil layer after the slurry is solidified, and the tensile and anti-pulling effects of the pile body are enhanced;

2. when the pile body is dug into the ground, the hard tool tip welded on the outer side wall of the tip increases the possibility of the pile body for chiseling hard ground, so that the ground digging capacity of the prefabricated combined pile is improved, and the two ring grooves can reduce the frictional resistance of a ground layer to the pile body in the pile sinking process, thereby reducing the construction difficulty and improving the construction efficiency;

3. after the grout is injected, the grout seeps out of the outer side wall of the pile body through the grout injection hole and is filled in the annular groove, the reinforcing rods, the reinforcing ribs, the reinforcing rings and the reinforcing steel bars which are arranged in the annular groove are inserted into the ground foundation layer, and the grout is solidified, so that the pile body is tightly combined with the ground foundation layer, and the tensile and uplift resistant effects of the pile body are further improved.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a partial structural view in section from a-a of fig. 1.

Fig. 3 is an enlarged view of a portion C of fig. 2.

Fig. 4 is an enlarged view of a portion B of fig. 1.

In the figure: 1. a pile body; 11. grouting a channel; 12. grouting holes; 13. cutting a conical block; 14. cutting a blade plate; 141. a reinforcing plate; 15. a tip; 151. a hard tip; 2. a strike cover; 21. a grouting port; 3. a ring groove; 31. chamfering; 32. a reinforcing bar; 33. reinforcing ribs; 34. a space; 35. a ring groove grouting hole; 36. reinforcing steel bars; 37. breaking the soil tip; 38. a reinforcement ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1 and 2, a prefabricated composite pile, including cylindrical pile body 1, pile body 1 is inside to be equipped with the slip casting passageway 11 of round hole shape, and slip casting passageway 11 leads to the diapire from the roof along 1 axis direction of pile body, is equipped with the circular slip casting hole 12 of a plurality of on the pile body 1 lateral wall, and slip casting hole 12 is along pile body circumference evenly distributed and with slip casting passageway 11 intercommunication setting.

Referring to fig. 1 and 2, a cylindrical impact cover 2 is arranged on the top wall of a pile body 1, a grouting opening 21 is arranged on the impact cover 2, and the grouting opening 21 is communicated with a grouting channel 11; be equipped with conical shape pointed end 15 on the 1 diapire of stake body, be equipped with four cutting cone blocks 13 that are three pyramidal on the 1 lateral wall of stake body, cutting cone block 13 is located one side that is close to pointed end 15 on the stake body 1, keeps away from pointed end 15 one side on the 1 lateral wall of stake body and is equipped with four cutting edge plates 14 that are the sheet metal form, and four cutting edge plates 14 set up and follow circumference equipartition along 1 axis direction of stake body.

Referring to fig. 1 and 2, during construction, the prefabricated combined pile manufactured in a factory is welded, the impact cover 2 is transported to a designated position after being welded, pile sinking equipment and hoisting equipment are built, the hoisting equipment aligns the tip 15 to the designated position, the pile sinking equipment impacts the impact cover 2, the impact cover 2 can transmit impact force of the pile sinking equipment to the pile body 1, the tip 15 cuts the ground, the pile body 1 is driven to enter the ground, the cutting cone 13 and the cutting blade plate 14 utilize the sharp part of the cutting cone to cut the soil layer, the ground cutting capacity of the pile body 1 is enhanced, the construction difficulty is reduced, the construction efficiency is improved, the impact cover 2 can also slow down direct impact of the pile sinking equipment on the pile body 1, and the possibility that the pile sinking equipment damages the pile body 1 is reduced.

Referring to fig. 1 and 2, after pile sinking is completed, the cutting blade plate 14 and the cutting cone block 13 can be smoothly inserted into the ground soil layer, high-pressure grouting equipment is reused, grout is injected into the grouting channel 11 through the grouting port 21, the grout seeps out onto the outer side wall of the pile body 1 through the grouting hole 12, and after the grout is solidified, the cutting blade plate 14 and the cutting cone block 13 are tightly combined with the ground soil layer, so that the combination degree of the pile body 1 and the ground is increased, and the compression and pulling resistant effects of the pile body 1 are further enhanced.

Referring to fig. 1, the outer side wall of a pile body 1 is provided with two annular grooves 3 which are respectively positioned at two ends of a cutting blade plate 14; a chamfer 31 is arranged at the junction of the ring groove 3 and the pile body 1; in the pile sinking process, the annular groove 3 can reduce the contact area of the pile body 1 and the ground soil layer, so that the frictional resistance of the ground soil layer to the pile body 1 is reduced, sundries entering the annular groove 3 can smoothly leave the annular groove 3 through the guidance of the chamfer 31, the construction difficulty is reduced, and the construction efficiency is improved.

Referring to fig. 3, a hard tip 151 having a conical shape is welded to an outer side wall of the tip 15; when the pile is sunk, the hard tool nose 151 can smoothly chisel the hard ground, the capability of the pile body 1 for chiseling the ground bottom is enhanced, the construction difficulty is reduced, and the construction efficiency is improved.

Referring to fig. 4, reinforcing plates 141 having a circular arc shape are respectively disposed at both sides of the cutting blade plate 14, and the two reinforcing plates 141 respectively cover the sides of the cutting blade 14, so that the strength of the cutting blade plate 14 is increased by the reinforcing plates 141, and the possibility of damage to the cutting blade plate 14 during pile sinking is reduced.

Referring to fig. 4, the bottom wall of the ring groove 3 is provided with four reinforcing rods 32 and four reinforcing ribs 33, and the four reinforcing rods 32 and the four reinforcing ribs 33 are uniformly distributed along the circumferential direction of the pile body 1; the reinforcing rod 32 is located above the reinforcing rib 33, the reinforcing rod 32 is connected with one end of the reinforcing rib 33 far away from the bottom wall of the ring groove 3, the reinforcing rod 32, the reinforcing rib 33 and the bottom wall of the ring groove 3 form a triangular space 34 in the axial direction of the pile body 1, a reinforcing ring 38 is arranged in the space 34, and the reinforcing ring 38 is connected with the reinforcing rib 33 and the reinforcing rod 32.

Referring to fig. 3 and 4, a plurality of steel bars 36 are arranged in the annular groove 3 along the axial direction of the pile body 1, one end of each steel bar 36 is connected with a reinforcing ring 38, a plurality of annular groove grouting holes 35 are formed in the side wall of the chamfer 31, and the annular groove grouting holes 35 are communicated with the grouting channel 11.

Referring to fig. 3 and 4, after pile sinking is finished, the reinforcing rod 32, the reinforcing rib 33, the reinforcing ring 38 and the reinforcing steel bar 36 are inserted into the ground substrate, after grouting equipment injects grout into the grouting channel 11, the grout seeps out through the annular groove grouting hole 35 and fills the annular groove 3, and the grout is solidified, so that the reinforcing rod 32, the reinforcing rib 33, the reinforcing ring 38 and the reinforcing steel bar 36 are tightly combined with the ground substrate, the combination strength of the pile body 1 and the ground substrate is improved, and the tensile and anti-pulling effects of the pile body 1 are improved.

Referring to fig. 4, the reinforcing ring 38 is provided with four ground breaking tips 37, and the four ground breaking tips 37 are triangular pyramid-shaped and uniformly distributed along the circumferential direction of the pile body 1; in the pile sinking process, the soil breaking tip 37 can cut the soil layer of the ground bottom by utilizing the edge and the sharp end of the soil breaking tip, so that the capability of the pile body 1 for digging the ground bottom can be improved.

Referring to fig. 3 and 4, after pile sinking is completed, the broken tip 37 penetrates into the ground foundation, and after slurry is injected into the grouting channel 11 by the grouting equipment, the slurry seeps into the annular groove 3 through the annular groove grouting hole 35, and after the slurry is solidified, the broken tip 37 is tightly combined with the ground foundation, so that the combination degree of the ground foundation and the pile body 1 is enhanced, and the compression and pull resistant effect of the pile body 1 is improved.

The implementation principle of the above embodiment is as follows: during construction, pile sinking equipment impacts the impact cover 2, the tip 15 of the pile body 1 cuts the ground, the pile body 1 is driven to enter the ground, and as the pile body 1 continuously penetrates into the ground, the cutting cone 13 and the cutting blade plate 14 on the side wall of the pile body 1 assist in cutting a ground soil layer, so that the construction difficulty is reduced, and the construction efficiency is improved; after pile sinking is finished, grouting into the pile body 1 by using high-pressure grouting equipment until grout overflows, stopping grouting and finishing construction; the thick liquid in slip casting passageway 11 can ooze on the pile body 1 lateral wall through slip casting hole 12, treats that the thick liquid solidifies, and pile body 1 and ground bed layer closely combine, improves the effect that pile body 1 tensile resistance to plucking.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A prefabricated combined pile is characterized in that: the pile comprises a pile body (1), wherein a grouting channel (11) is axially arranged on the top wall of the pile body (1), a plurality of grouting holes (12) are formed in the side wall of the pile body (1), and the grouting holes (12) are communicated with the grouting channel (11);

be equipped with pointed end (15) on pile body (1) diapire, be close to on pile body (1) the lateral wall and evenly be equipped with a plurality of cutting awl piece (13) in pointed end (15) one side, evenly be equipped with a plurality of cutting board (14) on pile body (1) the lateral wall, cutting board (14) set up along pile body (1) axial, cutting board (14) are located one side that cutting awl piece (13) kept away from pointed end (15).

2. A prefabricated composite pile according to claim 1, characterised in that: reinforcing plates (141) in the shape of circular arcs are arranged on two sides of the cutting edge plate (14), and the reinforcing plates (141) are axially arranged along the pile body (1).

3. A prefabricated composite pile according to claim 1, characterised in that: the outer side wall of the tip (15) is coated with a hard knife tip (151).

4. A prefabricated composite pile according to claim 1, characterised in that: be equipped with striking lid (2) on pile body (1) roof, be equipped with slip casting mouth (21) on striking lid (2) roof, slip casting mouth (21) and slip casting passageway (11) intercommunication setting.

5. A prefabricated composite pile according to claim 1, characterised in that: the outer side wall of the pile body (1) is provided with two ring grooves (3), and the two ring grooves (3) are respectively positioned at two ends of the cutting blade plate (14).

6. A precast composite pile according to claim 5, characterized in that: and a chamfer (31) is arranged at the junction of the annular groove (3) and the pile body (1).

7. A precast composite pile according to claim 6, characterized in that: a plurality of reinforcing rods (32) and a plurality of reinforcing ribs (33) are uniformly arranged on the bottom wall of the annular groove (3) respectively, the plurality of reinforcing rods (32) and the plurality of reinforcing ribs (33) are uniformly distributed along the circumferential direction of the pile body (1), the reinforcing rods (32) are positioned above the reinforcing ribs (33), and one end, away from the bottom wall of the annular groove (3), of each reinforcing rod (32) is connected with one end, away from the bottom wall of the annular groove (3), of each reinforcing rib (33);

be equipped with annular slip casting hole (35) on chamfer (31) lateral wall, annular slip casting hole (35) and slip casting passageway (11) intercommunication setting.

8. A prefabricated composite pile according to claim 7, characterised in that: be equipped with beaded finish (38) in annular (3), be equipped with space (34) that supply beaded finish (38) to pass through between stiffener (32) and strengthening rib (33), beaded finish (38) are connected with stiffener (32) and strengthening rib (33) respectively.

9. A precast composite pile according to claim 8, wherein: be equipped with a plurality of reinforcing bar (36), a plurality of between the relative lateral wall of annular (3) reinforcing bar (36) all along pile body (1) circumference equipartition, a plurality of reinforcing bar (36) are connected with beaded finish (38).

10. A precast composite pile according to claim 8, wherein: be equipped with a plurality of most advanced (37) that break ground on strengthening ring (38), a plurality of most advanced (37) that break ground along pile body (1) circumference equipartition.