CN112112159A - Electromagnetic gun pile head hole guiding device of large-diameter overlong static pressure anchor pile - Google Patents

Abstract

The electromagnetic gun pile head hole guiding device of the static pressure anchor pile is provided aiming at the building foundation reinforcement and building deviation rectification engineering of the large-diameter overlong static pressure anchor pile. The electromagnetic gun launching system comprises a launcher earth anchor system, an electromagnetic gun launching tube, an electromagnetic gun tripod, an electromagnetic gun coil and an electromagnetic gun heavy current control box, wherein an electromagnetic gun pile head enters a soft soil layer at a high speed to penetrate through a gravel interlayer, the electromagnetic gun pile head is embedded into a deep hard supporting layer, and the electromagnetic gun pile head is drilled at a high speed to form a pile foundation guide hole. The electromagnetic gun pile head is drilled at a high speed, so that rock soil around the pilot hole can be compacted, the pile foundation pilot hole cannot collapse, the side frictional resistance bearing capacity of the pile cannot be reduced, the resistance of the tip end of a temporary pile during pile sinking is reduced, the pile sinking is ensured to be smooth, and the pile length of a static pressure anchor rod pile is ensured, so that the settlement deformation of a building can be controlled; a small amount of slow setting concrete is poured at the bottom of a pile foundation pilot hole, and after the slow setting concrete is extruded by the pile end of the static pressure anchor rod pile, a local concrete expanded head is formed, so that the pile end bearing capacity of the static pressure anchor rod pile is greatly improved.

Description

Electromagnetic gun pile head hole guiding device of large-diameter overlong static pressure anchor pile

Technical Field

The invention belongs to the field of civil engineering, relates to a construction device of a static pressure anchor rod pile, and particularly relates to an electromagnetic gun pile head hole guiding device of a large-diameter overlong static pressure anchor rod pile.

Background

The static pressure anchor rod pile is a pile pressing implemented by utilizing the counter force provided by an anchor rod anchored in an original foundation, and the pressed pile is generally a small-section pile and is mainly used for foundation reinforcement and construction deviation correction engineering projects.

The static pressure anchor pile has the advantages that the used machines are simple, the construction is simple and convenient, the construction period is not influenced, the static pressure anchor pile can operate in a narrow space, the quality is reliable, and the static pressure anchor pile has the defects that holes are reserved on a bearing platform and anchor rods are embedded in a complex manner.

The main reasons of the quality accidents of the foundation of the building are that the bearing capacity of the original foundation is insufficient, the problems of structural inclination and the like occur, the foundation of the building is reinforced and corrected, and a static pressure anchor rod pile is usually adopted for processing.

The foundation reinforcement and the building deviation correction are carried out on the high-rise building, and an ultra-long static pressure anchor rod pile is adopted to ensure that the pile tip reaches a deep hard bearing layer, so that the uneven settlement is avoided after the high-rise building is reinforced; due to the requirement of the length-to-fineness ratio of the pile body, the overlong static pressure anchor rod pile must adopt a corresponding large-diameter static pressure anchor rod pile, and the large-diameter overlong static pressure anchor rod pile can ensure the foundation reinforcement treatment effect of high buildings.

In the pile sinking construction process of the large-diameter overlong static pressure anchor rod pile, when a broken stone penetrating interlayer is encountered, pile sinking is difficult, and a pile foundation hole leading construction technology is required to be adopted, so that the pile tip reaches a deep hard bearing layer.

At present, a static pressure anchor rod pile meets a site with complex and special geological conditions, a hole is led firstly and then the pile is pressed, the pile pressing depth needs to exceed the hole leading depth, pile hole leading construction mainly includes that a spiral drilling machine and a jet grouting pile machine are used for leading holes, a certain construction space height is needed, and the construction speed is low and the construction cost is high.

Static pressure stock pile consolidates foundation treatment and construction project of rectifying is the construction operation in narrow and small basement space, can't use large-scale mechanical equipment such as auger drilling machine and jet grouting stake machine to carry out pile foundation hole guiding construction, consequently, needs urgent need to develop an economic, material benefit, the quick major diameter overlength static pressure stock pile hole guiding construction equipment of construction.

The military electromagnetic cannon accelerates the metal cannonball by utilizing the Lorentz force generated by an electromagnetic field in an electromagnetic system to make the metal cannonball reach the kinetic energy required by striking a target, and compared with the traditional cannon pushed by gunpowder, the military electromagnetic cannon can greatly improve the speed and the shooting range of the cannonball.

The invention relates to an electromagnetic gun pile head hole leading device of a large-diameter overlong static pressure anchor pile, which can enable the large-diameter overlong static pressure anchor pile to reach a deep hard holding layer.

Disclosure of Invention

The technical problem is as follows: in order to overcome the defects in the prior art, the invention provides an electromagnetic gun pile head pilot hole device of a large-diameter overlong static pressure anchor pile.

The technical scheme is as follows: the invention discloses an electromagnetic gun pile head hole leading device of a large-diameter overlong static pressure anchor pile, which comprises an original basement bottom plate structure, an electromagnetic gun launching system, an electromagnetic gun pile head, a pile foundation hole leading hole, a large-diameter overlong static pressure anchor pile body and the like, and is characterized in that: the electromagnetic gun launching system is composed of a launching frame ground anchor system, an electromagnetic gun launching tube, an electromagnetic gun tripod, an electromagnetic gun coil and an electromagnetic gun heavy current control box, wherein the circular electromagnetic gun launching tube is inserted into the pile pressing hole of the static pressure anchor pile of the original basement bottom plate structure, the launching frame ground anchor system is positioned at the lower part of the electromagnetic gun launching system, the electromagnetic gun launching system is fixed on the original basement bottom plate structure through the launching frame ground anchor system, the upper end of the electromagnetic gun tripod is hooped by a hoop at the upper end of the electromagnetic gun tripod, the lower end of the electromagnetic gun tripod is supported on the original basement bottom plate structure, the electromagnetic gun coil is spirally wound on the electromagnetic gun launching tube, two leads are led out from the electromagnetic gun coil and connected with the electromagnetic gun heavy current control box, and the electromagnetic gun launching tube of the electromagnetic gun launching system launches an electromagnetic gun pile head, the electromagnetic gun pile head enters a soft soil layer at a high speed to penetrate through a gravel interlayer, the electromagnetic gun pile head is embedded into a deep and hard holding layer, the electromagnetic gun pile head is drilled at a high speed to form a pile foundation leading hole, a proper amount of hole bottom retarding concrete is poured into the bottom of the pile foundation leading hole, the pile body of the large-diameter overlong static pressure anchor pile is pressed into the pile foundation leading hole by an anchor static pressure pile machine, the pile tip of the large-diameter overlong static pressure anchor pile reaches the deep and hard holding layer, the pile tip extrudes the hole bottom retarding concrete to form a pile end concrete expanding head.

Preferably, the electromagnetic gun pile head is composed of an electromagnetic gun pile head steel shell and concrete filled in the electromagnetic gun pile head, and the electromagnetic gun pile head steel shell is a cannonball-shaped space curved surface formed by two sections of smoothly connected curves rotating around a central line.

Preferably, the electromagnetic gun launching tube is a composite material electromagnetic gun launching tube, and is formed by compounding an inner-layer ceramic tube and an outer-layer glass steel tube.

Preferably, electromagnetic gun transmitting system's launcher earth anchor system constitute by earth anchor bolt, earth anchor steel sheet and staple bolt sleeve, the earth anchor bolt is planted high strength bolt and is formed by adopting the structure to glue, earth anchor bolt anchor is around the pile pressing hole of the static pressure stock pile of original basement floor structure, the earth anchor steel sheet is fixed on original basement floor structure through earth anchor bolt, the centre of earth anchor steel sheet sets up the circle hole, earth anchor steel sheet and staple bolt sleeve cover in proper order in the outside of electromagnetic gun launching tube, both of staple bolt sleeve and electromagnetic gun launching tube adopt the structure to glue to bond continuously.

Preferably, the inner diameter of the hoop sleeve is the same as the outer diameter of the electromagnetic gun launching tube, and the diameter of the middle round hole of the ground anchor steel plate is the same as the outer diameter of the electromagnetic gun launching tube.

Preferably, the positions of the ground anchor bolt of the electromagnetic gun launcher ground anchor system and the ground anchor bolt of the anchor rod static pressure pile machine are the same, and the ground anchor bolts of the two ground anchor bolts are shared.

An operation method of an electromagnetic gun pile head hole guiding device of a large-diameter overlong static pressure anchor pile is characterized in that: the method comprises the following steps:

the method comprises the following steps: digging an inverted-cone-shaped static pressure anchor pile hole on an original basement bottom plate structure, and planting a ground anchor bolt around the hole by adopting structural adhesive;

step two: sequentially sleeving an earth anchor steel plate and an anchor ear sleeve on an electromagnetic gun launching tube consisting of an inner-layer ceramic tube and an outer-layer glass steel tube, adjusting the anchor ear sleeve to a proper position, and structurally and adhesively connecting the anchor ear sleeve and the electromagnetic gun launching tube;

step three: the ground anchor steel plate is fixed on the original basement bottom plate structure by adopting ground anchor bolts to form a launcher ground anchor system,

step four: the upper end of the electromagnetic gun launching tube is provided with a hoop of an electromagnetic gun tripod, the lower end of the electromagnetic gun tripod is fixed on the original basement bottom plate structure, an electromagnetic gun coil is wound on the electromagnetic gun launching tube, and two wires led out from the electromagnetic gun coil are connected with an electromagnetic gun heavy current control box to form an electromagnetic gun launching system;

step five: an electromagnetic gun launching system is adopted to launch an electromagnetic gun pile head, the electromagnetic gun pile head enters a soft soil layer at a high speed to penetrate through a gravel interlayer, the electromagnetic gun pile head is embedded into a deep hard bearing layer, and the electromagnetic gun pile head is drilled at a high speed to form a pile foundation guide hole;

step six: pouring retarded concrete at the bottom of the hole in the pile foundation pilot hole by adopting a conduit concrete pouring method;

step seven: the pile end of the pile body of the large-diameter overlong static pressure anchor rod pile extrudes the retarding concrete at the bottom of the hole and waits for the concrete to harden to form a pile end concrete expanded head;

step eight: and (3) sequentially completing pile pressing construction of all large-diameter overlong static pressure anchor piles, sealing pile heads, completing reinforcement foundation treatment of buildings in high buildings, and performing deviation rectification work on the buildings.

The invention utilizes the electromagnetic gun principle to launch the electromagnetic gun pile head at high speed, and the drill hole of the electromagnetic gun pile head reaches the deep hard bearing layer, thereby ensuring the pile length of the static pressure anchor pile.

The high-speed electromagnetic gun pile head is used for compacting rock soil around the guide hole, the guide hole cannot collapse, the bearing capacity of the pile side friction force cannot be reduced in the construction process of pressing the static pressure anchor pile, the bearing capacity of the static pressure anchor pile can be guaranteed to be unchanged, however, the resistance of the tip end of the temporary pile during pile sinking is reduced, the pile sinking is smooth, and the pile sinking of the large-diameter overlong static pressure anchor pile can be guaranteed to be in place.

The wall of the guide hole of the electromagnetic gun is firm without hole collapse, a guide pipe pouring method can be directly adopted, a small amount of slow setting concrete is poured at the bottom of the guide hole, a local concrete expanded head is formed at the pile end after pile pressing, the bearing capacity of the ground end of the anchor pile is greatly static-pressed, and the settlement deformation of a pile foundation is effectively reduced.

Has the advantages that: compared with the prior art, the invention has the following advantages:

the large-diameter overlength static pressure anchor pile is a method for reinforcing foundation of high-rise building and correcting building deviation, and can prevent the inclination of high-rise building from aggravating.

The high-rise buildings with uneven settlement and inclination are usually sites with complicated and special geological conditions, and even have broken stone interlayers, so that the large-diameter and overlong static pressure anchor rod pile is difficult to sink.

In order to enable the pile sinking of the large-diameter overlong static pressure anchor pile to reach a deep hard bearing layer, a pile foundation hole guiding construction technology of the static pressure pile needs to be adopted, a pile foundation hole guiding construction technology of a spiral drilling machine and a jet grouting pile machine needs a certain construction clearance height, the static pressure anchor pile is constructed and operated in a narrow basement space, the large spiral drilling machine and the jet grouting pile machine cannot be used at all, and the research and development of a large-diameter overlong static pressure anchor pile hole guiding construction device for construction are needed urgently.

The method is characterized in that a launcher earth anchor system is installed on a basement thick bottom plate, an electromagnetic gun launcher launches an electromagnetic gun pile head, the electromagnetic gun pile head is drilled into a soil layer at a high speed, penetrates through a gravel interlayer, is embedded into a deep hard bearing layer to form a static pressure anchor pile foundation guide hole, then a static pressure anchor pile machine is adopted to press in static pressure piles in multiple sections, and foundation reinforcement processing of high buildings is completed.

The electromagnetism shell is fast, and the penetrability is strong, and electromagnetism shell pile head can easily pierce through the rubble intermediate layer, and the electromagnetism shell pile head can imbed deep hard holding power layer deeply, utilizes the pile foundation guide hole, and major diameter overlength static pressure stock pile is impressed, and the pile foundation bearing capacity is big, and the pile foundation warp for a short time, and the pile foundation effect is little, and the pile foundation construction is swiftly convenient.

Four earth anchor bolts on the basement bottom plate of the building are the earth anchor bolt of the electromagnetic gun launcher and the earth anchor bolt of the static pressure anchor rod pile machine, and share the earth anchor bolt and the earth anchor bolt, thereby achieving two purposes.

The upper portion of electromagnetism big gun launching cradle sets up the tripod and supports, and the lower part of electromagnetism big gun launching cradle sets up the earth anchor system, and electromagnetism big gun launching cradle sound construction, the atress is reliable, and the earth anchor system bears the reaction force of electromagnetism big gun launching cradle, can ensure the steady transmission of electromagnetism big gun pile head.

According to the traditional pile foundation hole guiding construction scheme for the soil digging and drilling of the spiral drilling machine, soil body structures around the guiding hole are loosened, hole collapse can occur, and temporary measures such as slurry wall protection and the like need to be taken; the electromagnetic cannonball pile head is high in speed, high-temperature and high-pressure are generated on rock soil around a pile hole in the drilling process of the electromagnetic cannonball pile head, the rock soil around a pilot hole is solidified at high temperature, the rock soil around the pilot hole is compacted at high pressure, a cylindrical consolidated rock soil ring is formed around the pile foundation pilot hole, and the phenomenon that hole collapse cannot be generated due to compaction on the rock around the pilot hole can be guaranteed.

The soil digging and drilling scheme of the spiral drilling machine loosens soil structures around the guide hole, and reduces the pile side frictional resistance of the static pressure anchor pile; the electromagnetic gun pile head is used for compacting rock soil around the guide hole, the action of the electromagnetic gun pile head is equivalent to a construction scheme of firstly pressing in a small-diameter pile and then pressing in a large-diameter pile again, and the pile side friction resistance of the formed pile can be ensured not to be reduced.

The electromagnetic gun pile head guide hole only has the effect of reducing the resistance of the temporary pile tip in the pile sinking process of the static pressure anchor pile, so that the pile sinking is smooth, and the pile sinking of the static pressure anchor pile is facilitated to reach a deep hard bearing layer.

The pile foundation hole leading construction scheme of the auger drilling machine earth-drawing drilling hole is characterized in that after a pile is formed, a grouting pipe is usually embedded in advance, a high-pressure grouting pump is adopted to press cement slurry into the bottom of the pile, and a local enlarged head is formed at the bottom of the pile, so that the slurry has the functions of permeation, filling, compaction, consolidation and the like on a pile bottom soil layer and a pile soil layer around the pile bottom, the bearing capacity of a pile end is improved, the settlement amount is reduced, but the construction is difficult and complicated.

The electromagnetic gun pile head high-speed pilot hole has the advantages that the hole wall is firm and free of hole collapse, a guide pipe pouring method can be directly adopted, a small amount of slow setting concrete is poured at the bottom of the pilot hole, a large-diameter overlong static pressure anchor pile is sunk to reach a deep hard bearing layer, the slow setting concrete is extruded by the pile end of the static pressure anchor pile, a local concrete expanded head is formed at the pile end, the bearing capacity of the ground end of the static pressure anchor pile is greatly improved, the settlement deformation of a pile foundation is effectively reduced, the pile end grouting construction process which is difficult and tedious in construction is avoided, and the treatment effect of reinforcing the foundation of a high-rise building is ensured.

The electromagnetic gun pile head hole guiding device of the large-diameter overlong static pressure anchor pile has the advantages of advanced construction technology, large pile forming depth, high bearing capacity, quick construction, low manufacturing cost and the like, breaks through the construction technical bottleneck of the existing large-diameter overlong static pressure anchor pile, quickly performs reinforcement foundation treatment on high buildings, and can be used for correction project engineering of the high buildings.

Drawings

FIG. 1 is a plan view of an electromagnetic gun pile head hole guiding device of a large-diameter overlong static pressure anchor pile;

FIG. 2 is a cross-sectional view of the electromagnetic gun head of FIG. 1;

FIG. 3 is a schematic plan view of the electromagnetic gun firing system of FIG. 1;

FIG. 4 is a schematic plan view of the launcher ground anchor system of FIG. 3;

FIG. 5 is a cross-sectional view of the electromagnetic gun barrel of FIG. 3;

FIG. 6 is a three-dimensional schematic view of the electromagnetic gun firing system of FIG. 1;

fig. 7 is a schematic view of pile pressing construction of a large-diameter ultra-long static pressure anchor pile.

The figure shows that: the basement bottom plate structure 1; an electromagnetic gun launching system 2; a launcher ground anchor system 21; a ground anchor bolt 211; a ground anchor steel plate 212; a hoop sleeve 213; an electromagnetic gun firing system 22; an inner ceramic tube 221; an outer layer of glass reinforced plastic tubing 222; an electromagnetic cannon tripod 23; an electromagnetic gun coil 24; a large current control box 25 of the electromagnetic gun; an electromagnetic gun pile head 3; an electromagnetic gun pile head steel shell 31; the electromagnetic gun pile head is filled with concrete 32; a pile foundation guide hole 4; retarded concrete at the bottom of the hole 5; a large-diameter overlong static pressure anchor pile body 6; a bolt static pile machine 7; a soft soil layer 8; a macadam interlayer 9; a deep hard support layer 10; pile tip concrete enlarged head 11.

Detailed Description

The invention is further described with reference to the drawings and examples.

Example 1

The invention discloses an electromagnetic gun pile head hole leading device of a large-diameter overlong static pressure anchor pile, which comprises an original basement bottom plate structure 1, an electromagnetic gun launching system 2, an electromagnetic gun pile head 3, a pile foundation hole leading hole 4, a large-diameter overlong static pressure anchor pile body 6 and the like, and is characterized in that: the method is characterized in that a pile pressing hole of a static pressure anchor pile is drilled on an original basement bottom plate structure 1, an electromagnetic gun transmitting system 2 is composed of a transmitting frame ground anchor system 21, an electromagnetic gun transmitting tube 22, an electromagnetic gun tripod 23, an electromagnetic gun coil 24 and an electromagnetic gun heavy current control box 25, the electromagnetic gun transmitting tube 22 in a circular tube shape is inserted into the pile pressing hole of the static pressure anchor pile of the original basement bottom plate structure 1, the transmitting frame ground anchor system 21 is positioned at the lower part of the electromagnetic gun transmitting system 2, the electromagnetic gun transmitting system 2 is fixed on the original basement bottom plate structure 1 through the transmitting frame ground anchor system 21, a hoop at the upper end of the electromagnetic gun tripod 23 hoops the upper end of the electromagnetic gun transmitting tube 22, the lower end of the electromagnetic gun tripod 23 is supported on the original basement bottom plate structure 1, the electromagnetic gun coil 24 is spirally wound on the electromagnetic gun transmitting tube 22, two leads of the electromagnetic gun coil 24 are connected with the electromagnetic gun heavy current control box 25, the electromagnetic gun launching system 2's electromagnetic gun launching tube 22 launches electromagnetic gun pile head 3, electromagnetic gun pile head 3 high-speed entering soft soil layer 8 pierces through rubble intermediate layer 9, electromagnetic gun pile head 3 embedding deep hard holding power layer 10, 3 high-speed drilling of electromagnetic gun pile head forms pile foundation guide hole 4, pour into appropriate hole bottom delayed coagulation concrete 5 in the bottom of pile foundation guide hole 4, anchor rod static pressure pile machine 7 impresses major diameter overlength static pressure anchor rod pile body 6 in the pile foundation guide hole 4, the pile point of major diameter overlength static pressure anchor rod pile body 6 reaches deep hard holding power layer 10, pile point extrudes hole bottom delayed coagulation concrete 5, form pile tip concrete enlarged footing 11.

The electromagnetic gun pile head 3 is composed of an electromagnetic gun pile head steel shell 31 and electromagnetic gun pile head inner filling concrete 32, and the shape of the electromagnetic gun pile head steel shell 31 is a cannonball-shaped space curved surface formed by two sections of smoothly connected curves rotating around a central line.

The electromagnetic gun launching tube 22 is a composite material electromagnetic gun launching tube, and the electromagnetic gun launching tube 22 is formed by compounding an inner ceramic tube 221 and an outer glass steel tube 222.

Electromagnetic gun transmitting system 2's launcher earth anchor system 21 by earth anchor bolt 211, earth anchor steel sheet 212 and staple bolt sleeve 213 are constituteed, earth anchor bolt 211 is that the bolt that excels in is planted to adopt the structure glue to form, earth anchor bolt 211 anchors around the pile pressing hole of original basement bottom plate structure 1's static pressure stock pile, earth anchor steel sheet 212 is fixed on original basement bottom plate structure 1 through earth anchor bolt 211, the centre of earth anchor steel sheet 212 sets up the circle hole, earth anchor steel sheet 212 and staple bolt sleeve 213 cover in proper order in the outside of electromagnetic gun launching tube 22, staple bolt sleeve 213 and electromagnetic gun launching tube 22 both adopt the structure glue to bond continuously.

The inner diameter of the hoop sleeve 213 is the same as the outer diameter of the electromagnetic gun launching tube 22, and the diameter of the middle circular hole of the ground anchor steel plate 212 is the same as the outer diameter of the electromagnetic gun launching tube 22.

The positions of the ground anchor bolt 211 of the electromagnetic gun launcher ground anchor system 21 and the ground anchor bolt of the anchor rod static pressure pile machine 7 are the same, and the ground anchor bolts 211 of the two are shared.

Example 2

An operation method of an electromagnetic gun pile head hole guiding device of a large-diameter overlong static pressure anchor pile is characterized in that: the method comprises the following steps:

the method comprises the following steps: an inverted cone-shaped static pressure anchor pile pressing pile hole is dug on the original basement bottom plate structure 1, and a ground anchor bolt 211 is planted around the hole by structural adhesive;

step two: sequentially sleeving the electromagnetic gun launching tube 22 consisting of the inner ceramic tube 221 and the outer glass steel tube 222 on the earth anchor steel plate 212 and the hoop sleeve 213, adjusting the hoop sleeve 213 to a proper position, and structurally connecting the hoop sleeve 213 with the electromagnetic gun launching tube 22 by using glue;

step three: the ground anchor bolt 211 is adopted to fix the ground anchor steel plate 212 on the original basement bottom plate structure 1 to form the launcher ground anchor system 21,

step four: the upper end of the electromagnetic cannon launching tube 22 is provided with an anchor ear of an electromagnetic cannon tripod 23, the lower end of the electromagnetic cannon tripod 23 is fixed on the original basement bottom plate structure 1, an electromagnetic cannon coil 24 is wound on the electromagnetic cannon launching tube 22, and two leads led out from the electromagnetic cannon coil 24 are connected with an electromagnetic cannon heavy current control box 25 to form an electromagnetic cannon launching system 2;

step five: an electromagnetic gun launching system 2 is adopted to launch an electromagnetic gun pile head 3, the electromagnetic gun pile head 3 enters a soft soil layer 8 at a high speed to penetrate through a gravel interlayer 9, the electromagnetic gun pile head 3 is embedded into a deep hard bearing layer 10, and the electromagnetic gun pile head 3 is drilled at a high speed to form a pile foundation guide hole 4;

step six: pouring retarding concrete 5 at the bottom of the hole in the pile foundation guide hole 4 by adopting a conduit concrete pouring method;

step seven: the method comprises the following steps of pressing a large-diameter and overlong static pressure anchor pile body 6 into a plurality of sections by using an anchor rod static pressure pile machine 7, sinking the large-diameter and overlong static pressure anchor pile body 6 to a deep hard bearing layer 10, extruding retarded concrete 5 at the bottom of a hole by the pile end of the large-diameter and overlong static pressure anchor pile body 6, and waiting for hardening of the concrete to form a pile end concrete expanded head 11;

step eight: and (3) sequentially completing pile pressing construction of all large-diameter overlong static pressure anchor piles, sealing pile heads, completing reinforcement foundation treatment of buildings in high buildings, and performing deviation rectification work on the buildings.

Example 3

In a certain 28-storey high-rise residential building, the building is unevenly settled to cause the inclination of the building, which is caused by complicated field geological conditions, a gravel interlayer in a local area and insufficient length of an original pile; the building requires reinforcement of the foundation and rectification of the building.

The reinforcement design adopts the pile-repairing reinforcement scheme of the large-diameter overlong static-pressure anchor rod pile, the reinforcement pile-repairing adopts a steel pipe concrete pile, the length of the pile body is 25 meters, the diameter of the pile is 480mm, the wall thickness of the steel pipe is 8mm, and C35 concrete is poured in the reinforcement pile.

The original reinforced concrete basement bottom plate structure thickness is 450mm, for the smooth pile sinking of static pressure stock pile, adopts the electromagnetism big gun pile head guiding hole device of major diameter overlength static pressure stock pile, and the pile foundation guide hole is under construction, then static pressure stock pile construction technology pile pressing.

The electromagnetic gun launching system consists of a launcher earth anchor system, an electromagnetic gun launching tube, an electromagnetic gun tripod, an electromagnetic gun coil and an electromagnetic gun heavy current control box.

The electromagnetic gun launching system can launch a high-speed electromagnetic gun pile head, the electromagnetic gun pile head is formed by an electromagnetic gun pile head steel shell and electromagnetic gun pile head filled concrete, the maximum diameter of the electromagnetic gun pile head is 200mm, the length of the electromagnetic gun pile head is 300mm, the wall thickness of the electromagnetic gun pile head steel shell is 5mm, and the filled concrete is C40.

The electromagnetic gun launching tube is a composite material electromagnetic gun launching tube, the total length of the electromagnetic gun launching tube is 3.5 meters, the electromagnetic gun launching tube is formed by compounding an inner layer ceramic tube and an outer layer glass steel tube, the inner diameter of the electromagnetic gun launching tube is 200mm, the outer diameter of the electromagnetic gun launching tube is 280mm, the wall thickness of the inner layer ceramic tube is 15mm, and the wall thickness of the outer layer glass steel tube is 25 mm.

The ground anchor system comprises ground anchor bolt, ground anchor steel sheet and staple bolt sleeve, and the ground anchor bolt adopts the glued planting steel bar method of structure to fix on original reinforced concrete basement floor structure, and the ground anchor bolt is total 4, and ground anchor bolt diameter is 28mm, adopts finish rolling screw-thread steel material.

The ground anchor steel plate is a round steel plate with the diameter of 1 meter, the thickness of the steel plate is 40mm, a round hole with the diameter of 280mm is formed in the center of the ground anchor steel plate, and ground anchor bolt holes with the diameter of 30mm are formed in four corners of the ground anchor steel plate. The distance from the center of the bolt hole of the ground anchor to the edge of the steel plate of the ground anchor is 100 mm.

The staple bolt sleeve is glass steel sleeve, and the staple bolt sleeve is glued firm in connection with the outer glass steel tube structure of electromagnetic gun launching tube, and staple bolt sleeve height is 450mm, and staple bolt sleeve internal diameter is 280mm, and staple bolt sleeve external diameter is 360mm, and staple bolt sleeve upper portion sets up a ring form turn-ups, and the ring form turn-ups height is 50mm, and ring form turn-ups internal diameter is 280mm, and ring form turn-ups external diameter is 600 mm.

After the guide hole of the pile head of the electromagnetic gun is drilled, a small amount of slow setting concrete is poured at the bottom of the guide hole by adopting a guide pipe pouring method, the pile sinking of the large-diameter overlong static pressure anchor pile reaches a deep hard bearing layer, the slow setting concrete is extruded by the pile end of the static pressure anchor pile, and a local concrete expanded head is formed at the pile end, so that the treatment effect of the reinforcement foundation of the high-rise building is ensured.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (5)

1. The utility model provides an electromagnetism big gun pile head hole leading device of major diameter overlength static pressure stock pile, includes original basement floor structure (1), electromagnetism big gun transmitting system (2), electromagnetism big gun pile head (3), pile foundation draw hole (4) and major diameter overlength static pressure stock pile body (6) etc. its characterized in that: a pile pressing hole with a static pressure anchor rod pile is dug on an original basement bottom plate structure (1), an electromagnetic gun transmitting system (2) is composed of a transmitting frame ground anchor system (21), an electromagnetic gun transmitting tube (22), an electromagnetic gun tripod (23), an electromagnetic gun coil (24) and an electromagnetic gun heavy current control box (25), the round tube-shaped electromagnetic gun transmitting tube (22) is inserted into the pile pressing hole of the static pressure anchor rod pile of the original basement bottom plate structure (1), the transmitting frame ground anchor system (21) is positioned at the lower part of the electromagnetic gun transmitting system (2), the electromagnetic gun transmitting system (2) is fixed on the original basement bottom plate structure (1) through the transmitting frame ground anchor system (21), the upper end of the electromagnetic gun transmitting tube (22) is hooped by the hoop at the upper end of the electromagnetic gun tripod (23), the lower end of the electromagnetic gun tripod (23) is supported on the original basement bottom plate structure (1), an electromagnetic gun transmitting tube (22) is spirally wound on an electromagnetic gun coil (24), two leads are led out from the electromagnetic gun coil (24) and connected with an electromagnetic gun heavy current control box (25), the electromagnetic gun transmitting tube (22) of an electromagnetic gun transmitting system (2) transmits an electromagnetic gun pile head (3), the electromagnetic gun pile head (3) enters a soft soil layer (8) at a high speed to penetrate through a gravel interlayer (9), the electromagnetic gun pile head (3) is embedded into a deep hard holding layer (10), the electromagnetic gun pile head (3) is drilled at a high speed to form a pile foundation leading hole (4), a proper amount of hole bottom retarding concrete (5) is poured at the bottom of the pile foundation leading hole (4), an anchor static pressure pile machine (7) presses a large-diameter overlong static pressure anchor pile body (6) into the pile foundation leading hole (4), and the pile tip of the large-diameter overlong static pressure anchor pile body (6) reaches the deep hard holding layer (10), the pile tip extrudes the delayed coagulation concrete (5) at the hole bottom to form a pile end concrete expanded head (11).

2. The electromagnetic gun pile head hole guiding device of the large-diameter overlong static pressure anchor rod pile according to claim 1, characterized in that: the electromagnetic gun pile head (3) is composed of an electromagnetic gun pile head steel shell (31) and electromagnetic gun pile head inner filling concrete (32), and the shape of the electromagnetic gun pile head steel shell (31) is a cannonball-shaped space curved surface formed by two sections of smoothly connected curves rotating around a central line.

3. The electromagnetic gun pile head hole guiding device of the large-diameter overlong static pressure anchor rod pile according to claim 1, characterized in that: the electromagnetic gun launching tube (22) is made of composite materials, and the electromagnetic gun launching tube (22) is formed by compounding an inner-layer ceramic tube (221) and an outer-layer glass steel tube (222).

4. The electromagnetic gun pile head hole guiding device of the large-diameter overlong static pressure anchor rod pile according to claim 1, characterized in that: the launcher ground anchor system (21) of electromagnetic gun launching system (2) by earth anchor bolt (211), earth anchor steel sheet (212) and staple bolt sleeve (213) are constituteed, earth anchor bolt (211) adopts the structure to glue and plants high strength bolt and form, earth anchor bolt (211) anchor around the pile pressing hole of the static pressure stock pile of original basement floor structure (1), earth anchor steel sheet (212) are fixed on original basement floor structure (1) through earth anchor bolt (211), the centre of earth anchor steel sheet (212) sets up the round hole, earth anchor steel sheet (212) and staple bolt sleeve (213) cover in proper order in the outside of electromagnetic gun launching tube (22), staple bolt sleeve (213) and electromagnetic gun launching tube (22) both adopt the structure to glue to bond and link to each other.

5. The operation method of the electromagnetic gun pile head hole guiding device of the large-diameter overlong static pressure anchor rod pile is characterized by comprising the following steps of:

the method comprises the following steps: an inverted cone-shaped static pressure anchor pile hole is drilled on the original basement floor structure (1), and a ground anchor bolt (211) is planted around the hole by structural adhesive;

step two: sequentially sleeving an earth anchor steel plate (212) and an anchor ear sleeve (213) on an electromagnetic gun launching tube (22) consisting of an inner-layer ceramic tube (221) and an outer-layer glass steel tube (222), adjusting the anchor ear sleeve (213) to a proper position, and connecting the anchor ear sleeve (213) and the electromagnetic gun launching tube (22) by structural adhesive;

step three: the ground anchor steel plate (212) is fixed on the original basement bottom plate structure (1) by adopting a ground anchor bolt (211) to form a launcher ground anchor system (21),

step four: an anchor ear of an electromagnetic gun tripod (23) is arranged at the upper end of an electromagnetic gun launching tube (22), the lower end of the electromagnetic gun tripod (23) is fixed on the original basement bottom plate structure (1), an electromagnetic gun coil (24) is wound on the electromagnetic gun launching tube (22), and two wires led out from the electromagnetic gun coil (24) are connected with an electromagnetic gun heavy current control box (25) to form an electromagnetic gun launching system (2);

step five: an electromagnetic gun launching system (2) is adopted to launch an electromagnetic gun pile head (3), the electromagnetic gun pile head (3) enters a soft soil layer (8) at a high speed to penetrate through a gravel interlayer (9), the electromagnetic gun pile head (3) is embedded into a deep hard bearing layer (10), and the electromagnetic gun pile head (3) is drilled at a high speed to form a pile foundation lead hole (4);

step six: pouring retarding concrete (5) at the bottom of the hole in the pile foundation guide hole (4) by adopting a conduit concrete pouring method;

step seven: the method comprises the following steps of pressing a large-diameter and overlong static pressure anchor pile body (6) into a multi-section mode by using an anchor rod static pressure pile machine (7), enabling a pile sinking of the large-diameter and overlong static pressure anchor pile body (6) to reach a deep hard bearing layer (10), extruding retarding concrete (5) at the bottom of a hole at the pile end of the large-diameter and overlong static pressure anchor pile body (6), and waiting for hardening of the concrete to form a pile end concrete expanded head (11);

step eight: and (3) sequentially completing pile pressing construction of all large-diameter overlong static pressure anchor piles, sealing pile heads, completing reinforcement foundation treatment of buildings in high buildings, and performing deviation rectification work on the buildings.

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