CN116084398A - Reducing resistance pile - Google Patents

Abstract

The invention relates to a variable-diameter resistance pile which comprises a pile hole arranged on the ground, wherein a pile body is arranged in the pile hole, the pile body is connected with a resistance increasing part, the resistance increasing part is positioned in the pile hole, the resistance increasing part is in an expansion trend along the radial direction of the pile body so as to improve the density of soil around the pile body, and the pile body and the resistance increasing part form an integrated structure through concrete mortar. The resistance between the pile body and the side wall of the pile hole can be effectively improved, so that the support stability of the pile body is improved, larger supporting force can be provided, and the problem that the pile body is easy to excessively sink when a heavier support is supported is effectively avoided.

Description

Reducing resistance pile

Technical Field

The invention belongs to the technical field of building piles, and particularly relates to a variable-diameter resistance pile.

Background

Piles are usually required to be constructed when constructing bridges, buildings or other structures, and the piles mainly serve to support weights. Thus constructed piles are often required to have high stability to avoid tilting, destabilizing or collapsing of bridges, buildings or other structures. At present, most of the prior art adopts a hammering and pipe following mode to manufacture a pile hole, concrete mortar is poured into the pile hole after a reinforcement cage is put in, and a pile can be manufactured after the concrete mortar is solidified; the other method is to put the pile body (the prefabricated concrete pile body of the purchased finished product) into the pile hole, then fill the concrete mortar into the gap between the pile body and the pile hole, and then the pile can be manufactured after the concrete mortar is solidified. However, when the pile is constructed by the method, the resistance between the pile body and the side wall of the pile hole is small, so that the support stability of the pile is poor, a large support force cannot be provided, and the pile body is easy to sink excessively when the support is heavy. Based on this, provide a reducing resistance stake, can effectively improve the resistance between pile body and stake hole lateral wall, and then improve its supporting stability, and can provide great holding power, effectively avoided the easy excessive problem of sinking of pile body when supporting heavier support thing.

Disclosure of Invention

The invention provides a variable-diameter resistance pile which can effectively improve the resistance between a pile body and the side wall of a pile hole, further improve the support stability of the pile body, provide larger support force and effectively avoid the problem that the pile body is easy to excessively sink when a heavier support is supported.

The invention adopts the technical scheme that:

the utility model provides a reducing resistance stake, includes locates subaerial stake hole, be equipped with the pile shaft in the stake hole, the pile shaft is connected with increases and hinders the portion, increase and hinder the portion and be located in the stake hole, increase and hinder the portion and follow the pile shaft is radial to be the expansion trend in order to improve the density of pile shaft periphery soil, the pile shaft passes through concrete mortar and increases and hinder the portion and constitute integrated structure.

Further, the pile body is a precast concrete pile body, the resistance increasing part is a dry concrete mixture, the dry concrete mixture is buried on the side wall of the pile hole, and the precast concrete pile body and the dry concrete mixture form an integrated structure through concrete mortar;

the manufacturing of the variable-diameter resistance pile comprises the following steps of:

s1, sinking a steel sleeve to a first preset depth by using a pile driver in a hammering and pipe following mode;

s2, putting a dry concrete mixture into the steel sleeve, and tamping the dry concrete mixture by the pile machine through an inner tamping hammer to enable the dry concrete mixture to be tamped outside the steel sleeve from the bottom end of the steel sleeve;

s3, repeating the steps S1 and S2 until the steel sleeve is sunk to a second preset depth;

s4, putting the precast concrete pile body into a steel sleeve and aligning and positioning;

s5, pouring concrete mortar between the precast concrete pile body and the steel sleeve;

s6, lifting the steel sleeve to finish manufacturing the resistance pile.

Further, the resistance increasing part is a dry concrete mixture, the pile body comprises a steel bar cage arranged in the pile hole, and concrete mortar is poured between the steel bar cage and the resistance increasing part to solidify the steel bar cage and the resistance increasing part into an integrated structure;

the manufacturing of the variable-diameter resistance pile comprises the following steps of:

s1, sinking a steel sleeve to a first preset depth by using a pile driver in a hammering and pipe following mode;

s2, putting a dry concrete mixture into the steel sleeve, and tamping the dry concrete mixture by the pile machine through an inner tamping hammer to enable the dry concrete mixture to be tamped outside the steel sleeve from the bottom end of the steel sleeve;

s3, repeating the steps S1 and S2 until the steel sleeve is sunk to a second preset depth;

s4, putting the reinforcement cage into a steel sleeve and aligning and positioning;

s5, pouring concrete mortar between the steel sleeves;

s6, lifting the steel sleeve to finish manufacturing the resistance pile.

Further, concrete mortar is poured between the pile body and the pile hole, the pile body comprises a first sleeve, a plurality of second sleeves and a bottom cylinder, the first sleeve, the second sleeve and the bottom cylinder are sequentially arranged from high to low, and the resistance increasing part comprises a first resistance increasing part, a second resistance increasing part and a plurality of third resistance increasing parts;

the first resistance increasing part comprises an inner sleeve and a plurality of connecting rods, wherein the bottom end of the first sleeve and the top end of the second sleeve adjacent to the first sleeve are respectively sleeved on the upper end and the lower end of the inner sleeve in a sliding manner, a plurality of sliding rods are arranged on the inner sleeve in a sliding manner at intervals, the connecting rods are respectively hinged to the lower end face of the first sleeve and the upper end face of the second sleeve in a relative manner, and the front ends of the sliding rods are hinged to the two opposite connecting rod ends;

the second resistance increasing part comprises an inner sleeve and a plurality of connecting rods, the top end of the bottom cylinder and the bottom end of the second adjacent sleeve are respectively sleeved on the bottom end and the top end of the inner sleeve in a sliding manner, a plurality of sliding rods are arranged on the inner sleeve in a sliding manner at intervals, the connecting rods are respectively hinged to the upper end face of the bottom cylinder and the lower end face of the second sleeve in a opposite manner, and the front end of each sliding rod is hinged to the two opposite connecting rods;

the third resistance increasing part comprises an inner sleeve, a plurality of connecting rods and a plurality of sliding rods, the opposite ends of two adjacent second sleeves are respectively sleeved on the two ends of the inner sleeve in a sliding mode, the plurality of sliding rods are arranged on the inner sleeve in a sliding mode, the connecting rods are respectively hinged to the surfaces of the opposite ends of the two adjacent second sleeves in a relative mode, and the front ends of the sliding rods are hinged to the two opposite connecting rods together.

Further, a concrete solidification layer is arranged between the bottom end of the first sleeve and the top end of the second sleeve adjacent to the bottom end of the first sleeve, a concrete solidification layer is arranged between the top end of the bottom cylinder and the bottom end of the second sleeve adjacent to the bottom end of the first sleeve, a concrete solidification layer is arranged between the opposite ends of the two adjacent sleeves, the connecting rod is arranged in the concrete solidification layer, stress network seams are arranged on the outer surface of the concrete solidification layer, the depth of the stress network seams is 3/4 of the thickness of the concrete solidification layer, and biting teeth are arranged on the lower end face of the first sleeve, the upper end face of the bottom cylinder and the two end faces of the second sleeve.

Further, the lower end face of the first sleeve and the upper end face of the bottom cylinder are both provided with outward inclined structures.

Furthermore, a plurality of pouring holes are formed in the second sleeve and the bottom cylinder.

Further, the bottom of the pile hole is provided with a stone block, and the bottom cylinder is arranged on the stone block.

Further, the manufacturing of the variable-diameter resistance pile comprises the following steps:

s1, sinking a steel sleeve to a third preset depth by using a pile driver in a hammering and pipe following mode to manufacture a pile hole, wherein the gap between the pile hole and the periphery of a pile body is 2-3 cm;

s2, after stone blocks are thrown into the pile holes, the pile body is thrown into the pile holes for alignment;

s3, the pile driver hammers the top of the pile driver through external ramming, so that a plurality of connecting rods and sliding rods are inserted into the side wall of the pile hole, and meanwhile, the concrete solidification layer is extruded to be broken and extruded into the side wall of the pile hole;

s4, pressurizing and pouring concrete mortar into the pile body, wherein the concrete mortar flows into a gap between the pile body and the pile hole through the pouring hole, so that the crushed concrete solidification layer, the sliding rod, the connecting rod and the pile body form an integrated structure.

Compared with the prior art, the invention has the beneficial effects that:

1. through pushing dry concrete mixture at stake hole lateral wall and bottom, and then increase stake hole lateral wall and bottom's density, put in the stake downthehole back with the pile body, solidify dry concrete mixture and with pile body fixed connection through concrete mortar for this resistance stake has different cross sections, and the cross section is greater than the external diameter of pile body, can effectively improve the resistance between pile body and stake hole lateral wall, and then improves its supporting stability, and can provide great holding power, the easy excessively problem of sinking of pile body when having effectively avoided supporting heavier support.

2. The pile body is filled with the reinforcement cage and the concrete mortar in the pile hole, so that the pile body is filled in situ to be suitable for different pile hole depths temporarily in situ.

3. Through the cooperation design of sleeve one, sleeve two, endotheca, connecting rod and slide bar, can directly throw into the pile body after having built ordinary stake hole and make the stake, with increasing the portion of blocking prefabricated on the pile body, under gravity and impact's effect, sleeve one and sleeve two drive 2 connecting rods respectively and swing around its pin joint, two connecting rods drive the slide bar outwards to slide in order to insert in the stake hole lateral wall on the endotheca jointly, and then improve the resistance between pile body and stake hole lateral wall, and resistance stake production process is simple, is favorable to improving pile making efficiency.

4. Under the extrusion force action at two ends of the concrete solidification layer, the broken concrete solidification layer can be pushed down on the side wall of the pile hole so as to further increase the density of soil on the side wall of the pile hole, after concrete mortar is injected into a gap between the pile body and the pile hole, the pile body, the broken concrete solidification layer, the sliding rod and the connecting rod form an integrated structure, the resistance between the pile body and the side wall of the side hole is improved, the concrete solidification layer is prefabricated on the pile body, and the operations of carrying the pile body, throwing the pile body into the pile hole and the like are facilitated while the resistance increasing effect is ensured.

5. The concrete mortar is filled into the pile body in a pressurizing mode, the pressurizing block is put into the sleeve I, the pressurizing block is used for pushing the concrete mortar in the pile body to flow into a gap between the pile body and the pile hole through the filling hole, so that the broken concrete solidification layer, the sliding rod, the connecting rod and the pile body form an integrated structure, the structural strength of the pile body is improved, meanwhile, the concrete mortar can be quickly filled into the gap between the pile body and the pile hole, the problem that the concrete mortar is inconvenient to fill into the gap between the pile body and the pile hole is effectively solved, meanwhile, the effect that the concrete mortar is filled into the gap between the pile body and the pile hole can be improved under the pressurizing filling (the concrete mortar can be fully filled into the gap between the pile body and the pile hole, and part of the concrete mortar can be immersed into the side wall of the pile hole) is effectively improved, and the supporting stability and the supporting force of the resistance column are further improved.

Drawings

FIG. 1 is a schematic view of a pile hole production process in a first embodiment and a second embodiment;

FIG. 2 is a schematic overall structure of the first embodiment;

FIG. 3 is a schematic view of a production process of a second embodiment;

fig. 4 is a schematic overall structure of the third embodiment (after the pile body is put into the pile hole);

FIG. 5 is an enlarged view of FIG. 4 at A;

FIG. 6 is a schematic view of the overall structure of the third embodiment (resistance pile production completed);

FIG. 7 is an enlarged view of FIG. 6 at B;

fig. 8 is a schematic overall structure of the fourth embodiment (after the pile body is put into the pile hole);

FIG. 9 is an enlarged view of FIG. 8 at C;

FIG. 10 is a schematic view of the overall structure of the fourth embodiment (completion of production of the resistance pile);

FIG. 11 is an enlarged view of FIG. 10 at D;

fig. 12 is a schematic view of a partial structure (developed along the circumferential direction of the pile body) of the fourth embodiment;

FIG. 13 is a schematic diagram of the pressurized infusion production in the fourth embodiment;

in the figure: 1. ground surface; 2. a steel sleeve; 3. an inner tamping hammer; 4. a dry concrete mixture; 5. concrete mortar; 6. pile body; 61. a reinforcement cage; 7. a first sleeve; 8. pile holes; 9. pouring holes; 10. stone blocks; 11. a bottom cylinder; 12. a second sleeve; 13. a slide bar; 14. an inner sleeve; 15. a connecting rod; 16. a concrete setting layer; 17. an external tamping hammer; 18. biting teeth; 19. stress net seams; 20. pressurizing the block.

Detailed Description

For a better understanding of the technical content of the present invention, specific examples are provided below and the present invention is further described with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1 to 2, there is provided a variable diameter resistance pile, comprising a pile hole 8 provided on the ground 1, a pile body 6 is provided in the pile hole 8, the pile body 6 is a precast concrete pile body 6 in the prior art, the pile body 6 is connected with a resistance increasing part, the resistance increasing part is a dry concrete mixture 4, the dry concrete mixture 4 is prepared by mixing cement, sand and stones according to 1:1.1:2.72, the dry concrete mixture 4 is buried on the side wall of the pile hole 8, and the precast concrete pile body 6 and the dry concrete mixture 4 form an integrated structure through the concrete mortar 5.

The manufacturing method of the variable-diameter resistance pile comprises the following steps of:

s1, sinking a steel sleeve 2 to 0.6m by using a pile driver in a hammering and pipe following mode;

s2, putting a dry concrete mixture 4 into the steel sleeve 2, wherein the filling height of the concrete mixture 4 is 0.15-0.3m; the pile machine is used for tamping the dry concrete mixture 4 through the inner tamping hammer 3, so that the dry concrete mixture 4 is extruded outside the steel sleeve 2 from the bottom end of the steel sleeve 2, and the density of the bottom end and the side wall of the pile hole 8 is increased;

s3, repeating the steps S1 and S2 until the steel sleeve 2 is sunk to 2.4m (which is equivalent to circularly executing the steps S1 and S2 for 4 times, the concrete pile depth is not limited in the embodiment, and concrete can be executed according to the actual needed pile depth), so that the dry concrete mixture 4 is continuously extruded into the side wall of the pile hole 8, and the dry concrete mixture 4 is formed into a plurality of different cross sections on the side wall 8 of the pile hole;

s4, putting the precast concrete pile body 6 in the steel sleeve 2 and aligning and positioning;

s5, pouring concrete mortar 5 between the precast concrete pile body 6 and the steel sleeve 2, wherein the concrete mortar 5 can solidify the dry concrete mixture 4 and is fixedly connected to the precast concrete pile body 6;

s6, lifting the steel sleeve 2 to finish manufacturing the resistance pile.

The dry concrete mixture 4 is extruded into the side wall and the bottom end of the pile hole 8, so that the density of the bottom end and the side wall of the pile hole 8 is greatly improved, the pile diameter of the resistance pile can be effectively increased, the resistance between the pile body 6 and the side wall of the pile hole 8 can be effectively improved, the supporting stability of the resistance pile is further improved, larger supporting force can be provided, and the problem that the pile body 6 is easy to excessively sink when a heavier supporting object is supported is effectively avoided.

Embodiment two:

referring to fig. 1 and 3, there is provided a variable diameter resistance pile, including a pile hole 8 provided on the ground 1, a pile body 6 is provided in the pile hole 8, the pile body 6 is connected with a resistance increasing part, the resistance increasing part is a dry concrete mixture 4, the dry concrete mixture 4 is prepared from cement, sand and stones according to 1:1.1:2.72, uniformly mixing, namely, burying a dry concrete mixture 4 on the side wall of a pile hole 8, wherein a pile body 6 comprises a steel reinforcement cage 61 arranged in the pile hole 8, and concrete mortar 5 is poured between the steel reinforcement cage 61 and a resistance increasing part to solidify the steel reinforcement cage 61 and the resistance increasing part into an integrated structure;

the manufacturing method of the variable-diameter resistance pile comprises the following steps of:

s1, sinking a steel sleeve 2 to 0.6m by using a pile driver in a hammering and pipe following mode;

s2, putting a dry concrete mixture 4 into the steel sleeve 2, and tamping the dry concrete mixture 4 by a pile driver through an inner tamping hammer 3, so that the dry concrete mixture 4 is extruded outside the steel sleeve 2 from the bottom end of the steel sleeve 2;

s3, repeating the steps S1 and S2 until the steel sleeve 2 is sunk to 2.4m (which is equivalent to repeating the steps S1 and S2 for 4 times, the concrete pile depth is not further limited in the embodiment, the concrete can be executed according to the actual needed pile depth), the concrete mixture is in cross sections with different areas, and the outer profile of the cross section is larger than the outer diameter of the pile;

s4, throwing the reinforcement cage 61 into the steel sleeve 2 and aligning and positioning;

s5, pouring concrete mortar 5 between the steel sleeves 2;

s6, lifting the steel sleeve 2 to finish manufacturing the resistance pile.

The dry concrete mixture 4 is extruded into the side wall and the bottom end of the pile hole 8, so that the density of the bottom end and the side wall of the pile hole 8 is greatly improved, the pile diameter of the resistance pile can be effectively increased, the resistance between the pile body 6 and the side wall of the pile hole 8 can be effectively improved, the supporting stability of the resistance pile is further improved, larger supporting force can be provided, and the problem that the pile body 6 is easy to excessively sink when a heavier supporting object is supported is effectively avoided. In addition, the embodiment can be used for pouring the pile body 6 on site so as to be suitable for temporarily different depths of the pile holes 8 on site, thereby reducing the inconvenience of conveying and carrying the pile body 6 for purchasing finished products.

Embodiment III:

referring to fig. 4 to 7, a variable diameter resistance pile is provided, comprising a pile hole 8 arranged on the ground 1, a pile body 6 is arranged in the pile hole 8, the pile body 6 comprises a first sleeve 7, a second sleeve 2 12 and a bottom barrel 11, the first sleeve 7, the second sleeve 2 and the bottom barrel 11 are sequentially arranged from high to low, a resistance increasing part is connected to the pile body 6, and the resistance increasing part comprises a first resistance increasing part, a second resistance increasing part and a plurality of third resistance increasing parts;

the first resistance increasing part comprises an inner sleeve 14 and 8 connecting rods 15, the bottom end of a sleeve I7 and the top end of a sleeve II 12 adjacent to the sleeve I are respectively sleeved on the upper end and the lower end of the inner sleeve 14 in a sliding way, so that the sleeve I7 and the sleeve II 12 can slide on the inner sleeve 14, 4 sliding rods 13 are arranged on the inner sleeve 14 in a sliding way at intervals (the number of the connecting rods 15 and the number of the sliding rods 13 can be set according to the realization requirement, the number of the connecting rods 15 is 2 times that of the sliding rods 13, the sliding rods 13 can slide on the inner sleeve 14), the 4 connecting rods 15 are hinged on the lower end surface of the sleeve I7 at intervals, the 4 connecting rods 15 are hinged on the upper end surface of the sleeve II 12 at intervals, the 4 connecting rods 15 on the upper side are vertically opposite to the 4 connecting rods 15 on the lower side, and the outer end of the sliding rods 13 are commonly hinged with the outer ends of the two opposite connecting rods 15; when the pile body 6 is lifted up through the sleeve I7, the sleeve I7 slides upwards on the inner sleeve 14, the sleeve II 12 slides downwards on the inner sleeve 14, so that the inner ends of the 4 slide bars 13 are propped against each other to prevent the sleeve I7 and the sleeve II 12 from sliding further, the sleeve I7 and the sleeve II 12 cannot fall off from the upper end and the lower end of the inner sleeve 14, at the moment, the outer ends of the 2 opposite connecting rods 15 are all positioned at the outer sides of the connecting lines of the inner ends of the 2 connecting rods 15, so that after the pile body 6 is placed in the pile hole 8, the sleeve I7 and the sleeve II 12 respectively drive the 2 connecting rods 15 to swing around the hinging points of the two connecting rods 15 to drive the slide bars 13 to slide outwards on the inner sleeve 14 under the action of gravity, so that the connecting rods 15 and the slide bars 13 are inserted into the side walls of the pile hole 8, and the resistance between the pile body 6 and the side walls of the pile hole 8 is further improved;

the second resistance increasing part comprises an inner sleeve 14 and 8 connecting rods 15, the top end of the bottom cylinder 11 and the bottom end of the adjacent sleeve II 12 are respectively sleeved on the bottom end and the top end of the inner sleeve 14 in a sliding way, 4 sliding rods 13 are arranged on the inner sleeve 14 in a sliding way at intervals (the number of the connecting rods 15 and the number of the sliding rods 13 can be set according to the realization requirement, the number of the connecting rods 15 is preferably 2 times that of the sliding rods 13 without further limiting, the sliding rods 13 can slide on the inner sleeve 14, the 4 connecting rods 15 are hinged on the upper end face of the bottom cylinder 11 at intervals, the 4 connecting rods 15 are hinged on the lower end face of the sleeve II 12 at intervals, the 4 connecting rods 15 on the upper side are vertically opposite to the 4 connecting rods 15 on the lower side, and the outer ends of the sliding rods 13 are commonly hinged with the outer ends of the 2 opposite connecting rods 15; similarly, when the pile body 6 is lifted up through the sleeve I7, the sleeve II 12 slides upwards on the inner sleeve 14, the bottom cylinder 11 slides downwards on the inner sleeve 14, so that the inner ends of the 4 slide bars 13 mutually prop against each other to prevent the sleeve II 12 and the bottom cylinder 11 from sliding further, the sleeve II 12 and the bottom cylinder 11 cannot fall off from the upper end and the lower end of the inner sleeve 14, at the moment, the outer ends of the upper connecting rod 15 and the lower connecting rod 15 are positioned at the outer sides of the connecting lines of the inner ends of the 2 connecting rods 15, so that after the pile body 6 is placed in the pile hole 8, under the action of gravity and impact force, the sleeve I7 and the sleeve II 12 respectively drive the 2 connecting rods 15 to swing around the hinging points of the connecting rods 15, and the two connecting rods 15 jointly drive the slide bars 13 to slide outwards on the inner sleeve 14, so that the connecting rods 15 and the slide bars 13 are inserted into the side walls of the pile hole 8, and the resistance between the pile body 6 and the side walls of the pile hole 8 is further improved;

the third resistance increasing part comprises an inner sleeve 14, 8 connecting rods 15 and 4 sliding rods 13, opposite ends of two adjacent sleeves 12 are respectively sleeved on two ends of the inner sleeve 14 in a sliding way, the number of the connecting rods 15 of the 4 sliding rods 13 and the number of the sliding rods 13 which are arranged on the inner sleeve 14 in a sliding way at intervals can be set according to the realization requirement, no further limit is made, but the number of the connecting rods 15 is preferably 2 times that of the sliding rods 13), the sliding rods 13 can slide on the inner sleeve 14, the 4 connecting rods 15 are hinged on the lower end face of the upper sleeve 12 at intervals, the 4 connecting rods 15 are hinged on the upper end face of the lower sleeve 12 at intervals, the 4 connecting rods 15 on the upper side are vertically opposite to the 4 connecting rods 15 on the lower side, and the outer ends of the sliding rods 13 are commonly hinged with the outer ends of the 2 opposite connecting rods 15; similarly, when the pile body 6 is lifted by the sleeve one 7, the sleeve two 12 on the upper side slides upwards on the inner sleeve 14, the sleeve two 12 on the lower side slides downwards on the inner sleeve 14, so that the inner ends of the 4 slide bars 13 mutually prop against each other to prevent the two sleeve two 12 from sliding further, the sleeve two 12 on the upper side and the sleeve two 12 on the lower side cannot fall off from the upper end and the lower end of the inner sleeve 14, at the moment, the outer ends of the upper and the lower 2 opposite connecting rods 15 are positioned at the outer sides of connecting lines of the inner ends of the 2 connecting rods 15, so that after the pile body 6 is placed in the pile hole 8, the sleeve one 7 and the sleeve two 12 respectively drive the 2 connecting rods 15 to swing around hinge points under the action of gravity, and the two connecting rods 15 jointly drive the slide bars 13 to slide outwards on the inner sleeve 14 to be inserted into the side walls of the pile hole 8, so that the resistance between the pile body 6 and the side walls of the pile hole 8 is improved;

the manufacturing of the variable-diameter resistance pile comprises the following steps:

s1, sinking a steel sleeve 2 to 2.4cm by using a pile driver in a hammering and pipe following mode to manufacture a pile hole 8 (the concrete pile depth can be set according to the realization requirement and is not further limited), and the clearance between the pile hole 8 and the periphery of a pile body 6 is 2-3 cm so as to well fill concrete mortar 5;

s2, casting the pile body 6 into the pile hole 8 for alignment;

s3, the pile machine hits the top of the pile body 6 through an outer ramming hammer 17, so that a plurality of connecting rods 15 and sliding rods 13 are further inserted into the side wall of the pile hole 8;

s4, pouring concrete mortar 5 into the pile body 6, filling the concrete mortar 5 into the sleeve I7, the sleeve II 12, the inner sleeve 14 and the bottom cylinder 11, pouring the concrete mortar 5 into a gap between the pile body 6 and the pile hole 8, and forming an integrated structure by the slide rod 13, the connecting rod 15, the sleeve I7, the sleeve II 12 and the bottom cylinder 11 of the inner sleeve 14 after the concrete mortar 5 is solidified, thereby being beneficial to improving the integral supporting strength of the pile body 6, improving the resistance between the pile body 6 and the side wall of the pile hole 8, further improving the integral supporting strength and the stability of the resistance pile, and in addition, directly pouring the resistance pile body 6 into the pile body 6 for pile making after the common pile hole 8 is built.

Embodiment four:

referring to fig. 8 to 13, the present embodiment differs from the third embodiment in that:

a concrete solidification layer 16 is arranged between the bottom end of the first sleeve 7 and the top end of the second sleeve 12 adjacent to the first sleeve, a concrete solidification layer 16 is arranged between the top end of the bottom cylinder 11 and the bottom end of the second sleeve 12 adjacent to the first sleeve, the concrete solidification layers 16 are arranged between the opposite ends of the two adjacent sleeves 12, the connecting rods 15 are arranged in the concrete solidification layers 16, the outer sides of the sliding rods 13 are arranged in the concrete solidification layers 16, stress net gaps 19 are arranged on the outer surfaces of the concrete solidification layers 16, the depth of the stress net gaps 19 is 3/4 of the thickness of the concrete solidification layers 16, the lower end face of the first sleeve 7, the upper end face of the bottom cylinder 11 and the two end faces of the second sleeve 12 are respectively provided with biting teeth 18, so that when the concrete solidification layers 16 are well attached to a pile body 6, the concrete solidification layers 16 can generate larger stress concentration and are quickly crushed under the action of the extrusion forces of the two ends of the concrete solidification layers 16 and the pushing action of the sliding rods 13 and the connecting rods 15, the crushed extrusion forces can be pushed down on the side walls of the pile holes 8 to further increase the depth of the pile holes 8, the pile bodies 8 can be further moved into the pile bodies 6, the pile bodies 6 and the pile bodies 6, the pile bodies 6 can be further moved to form a pile body 6, the pile body 6 and the pile body 6 can be conveniently, and the pile body 6 can be further moved to the pile body 6, and the pile body 6 can be conveniently and the pile body 6 and the pile body can be further conveniently and the pile body 6.

Specifically, the lower end face of the first sleeve 7 and the upper end face of the bottom barrel 11 are both provided with outward inclined structures, when the top of the first sleeve 7 is hit, the first sleeve 7 and the adjacent second sleeve 12 slide relatively close to each other, the two adjacent second sleeves 12 slide relatively close to each other, the bottom barrel 11 and the adjacent second sleeves 12 slide relatively close to each other, and the broken concrete solidification layer 16 can be promoted to be extruded in the side wall of the pile hole 8.

Specifically, a plurality of pouring holes 9 are formed in the second sleeve 12 and the bottom barrel 11, and when pouring is added, the pouring holes 9 can be used for conveying the concrete mortar 5 in the pile body 6 into a gap between the pile body 6 and the pile hole 8, so that pouring operation is convenient.

Specifically, the gravel 10 is laid at the bottom of the pile hole 8, the bottom barrel 11 is arranged on the gravel 10, the end resistance of the pile body 6 can be effectively increased by supporting the bottom barrel 11 by using the gravel 10, excessive sinking of the pile body 6 can be avoided when the top of the pile body 6 is prevented from being hit, good support is provided, and meanwhile, the pile body 6 material is saved (the pile body 6 does not need to be provided too deeply to provide higher supporting force).

The manufacturing of the variable-diameter resistance pile comprises the following steps:

s1, sinking a steel sleeve 2 to 2.4cm by using a pile driver in a hammering and pipe following mode to manufacture a pile hole 8 (the specific pile depth can be set according to the implementation requirement and is not further limited), and the clearance between the pile hole 8 and the periphery of a pile body 6 is 2-3 cm;

s2, after a proper amount of crushed stone 10 is put into the pile hole 8, the pile body 6 is put into the pile hole 8 for alignment;

s3, the pile machine hits the top of the pile body 6 through an outer ramming hammer 17, so that the crushed stone 10 is rammed, a plurality of connecting rods 15 and sliding rods 13 are inserted into the side wall of the pile hole 8, and meanwhile, a concrete solidification layer 16 is extruded to be crushed and extruded into the side wall of the pile hole 8;

s4, pressurizing and pouring concrete mortar 5 into the pile body 6, when the pressurizing block 20 is put into the sleeve I7, the pressurizing block 20 is used for pressurizing and pressing the pressurizing block 20, the pressurizing block 20 pushes the concrete mortar 5 in the pile body 6 to flow into a gap between the pile body 6 and the pile hole 8 through the pouring hole 9, so that the broken concrete solidification layer 16, the sliding rod 13, the connecting rod 15 and the pile body 6 form an integrated structure, the integral structural strength of the pile body 6 is improved, meanwhile, the concrete mortar 5 can be quickly poured into the gap between the pile body 6 and the pile hole 8, the problem that the concrete mortar 5 is inconvenient to pour into the gap between the pile body 6 and the pile hole 8 is effectively solved, meanwhile, the effect that the concrete mortar 5 is poured into the gap between the pile body 6 and the pile hole 8 can be fully poured into the gap between the pile body 6 and the pile hole 8, and part of the concrete mortar 5 can be extruded into the side wall of the pile hole 8 can be effectively improved, and the supporting stability and the supporting force of the resistance are further improved.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (9)

1. The utility model provides a reducing resistance stake which characterized in that: including locating subaerial stake hole, be equipped with the pile shaft in the stake hole, the pile shaft is connected with increases and hinders the portion, increase and hinder the portion and be located in the stake hole, increase and hinder the portion and follow the pile shaft is radial to be the expansion trend in order to improve the density of pile shaft periphery soil, the pile shaft passes through concrete mortar and increases and hinder the portion and constitute integrated structure.

2. A variable diameter resistance pile according to claim 1, characterised in that: the pile body is a precast concrete pile body, the resistance increasing part is a dry concrete mixture, the dry concrete mixture is buried on the side wall of the pile hole, and the precast concrete pile body and the dry concrete mixture form an integrated structure through concrete mortar;

the manufacturing of the variable-diameter resistance pile comprises the following steps of:

s1, sinking a steel sleeve to a first preset depth by using a pile driver in a hammering and pipe following mode;

s2, putting a dry concrete mixture into the steel sleeve, and tamping the dry concrete mixture by the pile machine through an inner tamping hammer to enable the dry concrete mixture to be tamped outside the steel sleeve from the bottom end of the steel sleeve;

s3, repeating the steps S1 and S2 until the steel sleeve is sunk to a second preset depth;

s4, putting the precast concrete pile body into a steel sleeve and aligning and positioning;

s5, pouring concrete mortar between the precast concrete pile body and the steel sleeve;

s6, lifting the steel sleeve to finish manufacturing the resistance pile.

3. A variable diameter resistance pile according to claim 1, characterised in that: the resistance increasing part is a dry concrete mixture, the pile body comprises a steel reinforcement cage arranged in the pile hole, and concrete mortar is poured between the steel reinforcement cage and the resistance increasing part to solidify the steel reinforcement cage and the resistance increasing part into an integrated structure;

the manufacturing of the variable-diameter resistance pile comprises the following steps of:

s1, sinking a steel sleeve to a first preset depth by using a pile driver in a hammering and pipe following mode;

s2, putting a dry concrete mixture into the steel sleeve, and tamping the dry concrete mixture by the pile machine through an inner tamping hammer to enable the dry concrete mixture to be tamped outside the steel sleeve from the bottom end of the steel sleeve;

s3, repeating the steps S1 and S2 until the steel sleeve is sunk to a second preset depth;

s4, putting the reinforcement cage into a steel sleeve and aligning and positioning;

s5, pouring concrete mortar between the steel sleeves;

s6, lifting the steel sleeve to finish manufacturing the resistance pile.

4. A variable diameter resistance pile according to claim 1, characterised in that: the pile body comprises a first sleeve, a plurality of second sleeves and a bottom cylinder, wherein the first sleeve, the second sleeve and the bottom cylinder are sequentially arranged from high to low, and the resistance increasing part comprises a first resistance increasing part, a second resistance increasing part and a plurality of third resistance increasing parts;

the first resistance increasing part comprises an inner sleeve and a plurality of connecting rods, wherein the bottom end of the first sleeve and the top end of the second sleeve adjacent to the first sleeve are respectively sleeved on the upper end and the lower end of the inner sleeve in a sliding manner, a plurality of sliding rods are arranged on the inner sleeve in a sliding manner at intervals, the connecting rods are respectively hinged to the lower end face of the first sleeve and the upper end face of the second sleeve in a relative manner, and the front ends of the sliding rods are hinged to the two opposite connecting rod ends;

the second resistance increasing part comprises an inner sleeve and a plurality of connecting rods, the top end of the bottom cylinder and the bottom end of the second adjacent sleeve are respectively sleeved on the bottom end and the top end of the inner sleeve in a sliding manner, a plurality of sliding rods are arranged on the inner sleeve in a sliding manner at intervals, the connecting rods are respectively hinged to the upper end face of the bottom cylinder and the lower end face of the second sleeve in a opposite manner, and the front end of each sliding rod is hinged to the two opposite connecting rods;

the third resistance increasing part comprises an inner sleeve, a plurality of connecting rods and a plurality of sliding rods, the opposite ends of two adjacent second sleeves are respectively sleeved on the two ends of the inner sleeve in a sliding mode, the plurality of sliding rods are arranged on the inner sleeve in a sliding mode, the connecting rods are respectively hinged to the surfaces of the opposite ends of the two adjacent second sleeves in a relative mode, and the front ends of the sliding rods are hinged to the two opposite connecting rods together.

5. A variable diameter resistance pile according to claim 4, characterised in that: a concrete solidification layer is arranged between the bottom end of the first sleeve and the top end of the second sleeve adjacent to the first sleeve, a concrete solidification layer is arranged between the top end of the bottom cylinder and the bottom end of the second sleeve adjacent to the first sleeve, a concrete solidification layer is arranged between the opposite ends of the two adjacent second sleeves, the connecting rod is arranged in the concrete solidification layer, stress net seams are arranged on the outer surface of the concrete solidification layer, and biting teeth are arranged on the lower end face of the first sleeve, the upper end face of the bottom cylinder and the two end faces of the second sleeve.

6. A variable diameter resistance pile according to claim 5, characterised in that: the lower end face of the first sleeve and the upper end face of the bottom cylinder are both provided with outward inclined structures.

7. A variable diameter resistance pile according to claim 6, characterised in that: and a plurality of pouring holes are formed in the second sleeve and the bottom cylinder.

8. A variable diameter resistance pile according to claim 7, characterised in that: the pile hole bottom is equipped with the rubble piece, the end section of thick bamboo is located on the rubble piece.

9. A variable diameter resistance pile according to claim 8, characterised in that: the manufacturing method of the variable-diameter resistance pile comprises the following steps:

s1, sinking a steel sleeve to a third preset depth by using a pile driver in a hammering and pipe following mode to manufacture a pile hole, wherein the gap between the pile hole and the periphery of a pile body is 2-3 cm;

s2, after stone blocks are thrown into the pile holes, the pile body is thrown into the pile holes for alignment;

s3, the pile driver hammers the top of the pile driver through external ramming, so that a plurality of connecting rods and sliding rods are inserted into the side wall of the pile hole, and meanwhile, the concrete solidification layer is extruded to be broken and extruded into the side wall of the pile hole;

s4, pressurizing and pouring concrete mortar into the pile body, wherein the concrete mortar flows into a gap between the pile body and the pile hole through the pouring hole, so that the crushed concrete solidification layer, the sliding rod, the connecting rod and the pile body form an integrated structure.

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