CN110847163A - Pulse pile foundation bottom expanding construction method and device - Google Patents
Pulse pile foundation bottom expanding construction method and device Download PDFInfo
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- CN110847163A CN110847163A CN201911296209.6A CN201911296209A CN110847163A CN 110847163 A CN110847163 A CN 110847163A CN 201911296209 A CN201911296209 A CN 201911296209A CN 110847163 A CN110847163 A CN 110847163A
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- 238000010276 construction Methods 0.000 title claims abstract description 67
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 230000035939 shock Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000004146 energy storage Methods 0.000 claims description 58
- 239000003990 capacitor Substances 0.000 claims description 52
- 239000002184 metal Substances 0.000 claims description 26
- 238000010009 beating Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
- E21B7/30—Enlarging drilled holes, e.g. by counterboring without earth removal
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a pulse pile foundation base expansion construction method, which comprises the steps of checking geological data, combining design parameters, and selecting proper pore-forming construction machine machinery and a construction method; leveling the field, clearing the above-ground obstacles, marking underground structures and pipelines within the range of the treatment field, and keeping the field flat; measuring and setting out, and calibrating the center position of the pile foundation; forming an original hole by using the selected construction machine and the selected construction method; putting a pulse pile foundation bottom expanding construction device to the bottom of the original hole after the original hole is drilled, and impacting the periphery of the drilled bottom by using shock waves until the pile foundation with the expanded bottom is formed after the drilling is finished; and filling holes to form pile foundations. The method and the device have the advantages of simple construction method, convenient operation, low construction cost, high construction efficiency, simple equipment, easy transportation, high earthquake resistance level of the driven foundation pile and strong anti-settling capacity, can adapt to various geological environments, particularly have more obvious application effect in high-rise and super high-rise buildings with larger bearing capacity, and have wide applicability in the field of buildings.
Description
Technical Field
The invention relates to the field of buildings, in particular to a building construction method and a building construction device.
Background
With the continuous acceleration of the urbanization process in China, the construction of cities and traffic infrastructures is further developed, the number of high-rise buildings is increased day by day, and higher requirements are put forward on the quality safety of pile foundation construction. In the pile foundation construction process, the condition of encountering unfavorable geology such as loose soft soil, collapsible loess is not rare, because the pile foundation construction is secret engineering in the underground, these unfavorable geology bring very big difficulty for the pile foundation construction, how foundation bearing capacity, increase pile foundation stability, if handle improper accident such as pile foundation settlement slope can appear.
Particularly, when disasters such as earthquake, tornado and the like occur, the vertically-driven pile foundation is easy to be rooted and pulled up, so that the accidents of inclination and uneven settlement of the whole building are caused.
Disclosure of Invention
The invention provides a pulse pile foundation bottom-expanding construction method and a device, aiming at solving the technical problems that in the prior art, a vertically-driven pile foundation is easy to be uprooted with roots, so that the inclination and settlement of the whole building are caused, and the depth of the pile foundation needs to be increased in the foundation construction with a complex geological structure.
The invention provides a pulse pile foundation bottom expanding construction method, which comprises the following steps:
(1) checking geological data, and selecting proper hole forming construction machine machinery and construction method by combining design parameters.
(2) Leveling the field, clearing the above-ground obstacles, marking the underground structures and pipelines in the range of the treatment field, and keeping the field flat.
(3) And (6) measuring and setting out, and calibrating the center position of the pile foundation.
(4) And (3) forming the original hole by applying the construction machine and the construction method selected in the step (1).
(5) And (3) putting the pulse pile foundation bottom expanding construction device to the bottom of the original hole after the original hole is punched, beating the periphery of the punched hole bottom by using shock waves, and rotating while beating until the pile foundation with the expanded bottom is formed after the pile foundation is beaten.
(6) And filling holes to form pile foundations.
In the invention, a hole-forming construction machine is a mechanical crawler-type rotary drilling rig or a positive and negative circulation drilling rig. The construction method of the invention is dry hole drilling or mud circulation drilling.
In the invention, the impulse pile foundation bottom expanding construction device uses the shock wave to strike the rock soil layer around the pile bottom, and the formed pile foundation with the expanded bottom and the original hole section are in the shape of the inverted T.
In the invention, the reinforcement cage is firstly put in the hole filling process, and then concrete is poured.
The invention also provides a pulse pile foundation bottom expanding construction device which comprises a constant current power supply, an energy storage capacitor and an energy converter, wherein the constant current power supply is electrically connected with the energy storage capacitor, and the energy storage capacitor is connected with the energy converter.
In the invention, the constant current power supply is a high-voltage direct current constant current power supply.
According to the invention, the energy storage capacitor is of a coaxial structure, the metal rod is arranged in the energy storage capacitor, the metal pipe is arranged outside the energy storage capacitor, the insulating layer is arranged outside the metal rod, and the supporting body is arranged between the insulating layer and the metal pipe.
The energy converter comprises a ground electrode and a high-voltage electrode, a third insulating layer is arranged outside the high-voltage electrode, a shell connecting port is arranged outside the third insulating layer, the ground electrode is connected with the shell connecting port, the high-voltage electrode is electrically connected with a metal rod, and shock wave output windows are arranged on pipe columns around the high-voltage electrode and the ground electrode.
In the invention, a plurality of groups of energy storage capacitors are connected in sequence, metal pipes of adjacent energy storage capacitors are in threaded connection, a connector is arranged between metal rods of the adjacent energy storage capacitors, a spring is arranged outside the connector, a lead is arranged in the center of the spring, and two ends of the lead are respectively connected with the metal rods of the adjacent energy storage capacitors; wherein, a rotating gear is sleeved outside one end of one energy storage capacitor positioned at the end head.
In the invention, a self-breakdown gas spark switch is arranged between two groups of the plurality of groups of energy storage capacitors, one end of the self-breakdown gas spark switch is provided with a first electrode, the other end of the self-breakdown gas spark switch is provided with a second electrode, a shell is arranged outside the self-breakdown gas spark switch, a first insulating layer is arranged between the shell and the first electrode, and a second insulating layer is arranged between the shell and the second electrode.
The invention has the beneficial effects that:
the pulse pile foundation bottom expanding construction method and the pulse pile foundation bottom expanding construction device provided by the invention have the advantages of simple construction method, convenience in operation, low construction cost, high construction efficiency, simple equipment, easiness in transportation, high earthquake resistance level of the finished pile foundation, strong anti-settling capacity, capability of adapting to various geological environments, more obvious application effect in high-rise buildings, super high-rise buildings and other buildings with large bearing capacity, and wide applicability in the field of buildings.
Drawings
FIG. 1 is a schematic diagram of a shock wave generator of the pedestal-enlarging construction device for pulse-discharging pile foundation.
Fig. 2 is a radial cross-sectional view of an energy storage capacitor of the present invention.
Fig. 3 is a transverse cross-sectional structural view of the energy storage capacitor of the present invention.
Fig. 4 is a structural diagram of the self-breakdown gas spark switch of the present invention.
Fig. 5 is a structural diagram of an energy converter according to the present invention.
Fig. 6 is a pile foundation hole of the present invention.
FIG. 7 is an impingement hole of the present invention.
In FIGS. 1-7: 1-energy storage capacitor, 2-energy converter, 3-rotating gear, 4-metal pipe, 5-insulating layer, 6-metal rod, 7-support, 8-first electrode, 9-second electrode, 10-first insulating layer, 11-second insulating layer, 12-shell, 13-third insulating layer, 14-high voltage electrode, 15-shock wave output window, 16-shell connecting port, 17-ground electrode, 18-original hole and 19-bottom enlarged pile foundation.
Detailed Description
The following description of the embodiments of the present invention will be made in further detail with reference to the accompanying fig. 1 to 7 and examples, but the method of the present invention is not limited to the following examples.
In the present invention, for convenience of description, the description of the relative positional relationship of the components in the present invention is described based on the layout pattern of fig. 1, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1.
The energy storage capacitor 1, the constant current power supply and the like used in the invention are purchased or customized through market approaches.
Embodiment one, pulse pile foundation bottom expanding construction method
The invention provides a pulse pile foundation bottom expanding construction method, which comprises the following steps:
(1) checking geological data, and selecting proper hole forming construction machine machinery and construction method by combining design parameters.
(2) Leveling the field, clearing the above-ground obstacles, marking the underground structures and pipelines in the range of the treatment field, and keeping the field flat.
(3) And (4) measuring and setting out a control axis, setting out a side line of the piling field and marking.
(4) And (3) impacting the original hole 18 by applying the construction machine and the construction method selected in the step (1).
(5) Put pulse pile foundation and expand end construction equipment after having beaten the original hole, utilize the shock wave to beat 18 hole bottoms in original hole all around, beat the limit and beat the rotation, form the pile foundation 19 that the bottom expands until beating the round.
(6) And filling holes to form pile foundations.
In the invention, a hole-forming construction machine is a mechanical crawler-type rotary drilling rig or a positive and negative circulation drilling rig.
The hole forming construction method in the step (1) is dry hole drilling or slurry circulation drilling.
In the invention, the pile foundation 19 and the original hole 18 which are formed by impact waves and have enlarged bottoms have inverted T-shaped sections.
In the invention, the reinforcement cage is firstly put in the hole filling process, and then concrete is poured.
Example two: pulse pile foundation expands end construction equipment
The invention also provides a pulse pile foundation bottom expanding construction device which comprises a constant current power supply, an energy storage capacitor 1 and an energy converter 2, wherein the constant current power supply is electrically connected with the energy storage capacitor 1, and the energy storage capacitor 1 is connected with the energy converter 2.
In the invention, an energy storage capacitor 1 is of a coaxial structure, a metal rod 6 is arranged in the energy storage capacitor 1, a metal tube 4 is arranged outside the energy storage capacitor 1, an insulating layer 5 is arranged outside the metal rod 6, and a support body 7 is arranged between the insulating layer 5 and the metal tube 4.
In the invention, the energy converter 2 is a load and comprises a ground electrode 17 and a high-voltage electrode 14, a third insulating layer 13 is arranged outside the high-voltage electrode 14, a shell connecting port 16 is arranged outside the third insulating layer 13, the ground electrode 17 is connected with the shell connecting port 16, the high-voltage electrode 14 is electrically connected with the metal rod 6, and a shock wave output window 15 is arranged on the shell connecting port 16 around the high-voltage electrode 14 and the ground electrode 17. The distance between the ground electrode 17 and the high voltage electrode 14 is the main switch, and in the dry original hole, the air is used.
According to the invention, a plurality of groups of energy storage capacitors 1 are connected in sequence, metal pipes 4 of adjacent energy storage capacitors 1 are in threaded connection, a connector is arranged between metal rods 6 of adjacent energy storage capacitors 1, a spring is arranged outside the connector, a lead is arranged in the center of the spring, two ends of the lead are respectively connected with the metal rods 6 of the adjacent energy storage capacitors 1, the spring ensures reliable connection and cannot slide, the lead avoids a spiral structure of the spring, and the inductance is reduced to the minimum; wherein, the external part of one end of the energy storage capacitor 1 at the end is sleeved with a rotating gear 3, which is convenient for controlling the pulse pile foundation bottom expanding construction device to rotate by a certain angle according to the requirement.
In the invention, a self-breakdown gas spark switch is arranged between two groups of the energy storage capacitors 1, one end of the self-breakdown gas spark switch is provided with a first electrode 8, the other end of the self-breakdown gas spark switch is provided with a second electrode 9, a shell 12 is arranged outside the self-breakdown gas spark switch, a first insulating layer 10 is arranged between the shell 12 and the first electrode 8, and a second insulating layer 11 is arranged between the shell 12 and the second electrode 9. The self-breakdown gas spark switch divides the energy storage capacitor 1 into a primary energy storage capacitor and a pulse energy storage capacitor, the self-breakdown gas spark switch is equivalent to a change-over switch, the change-over switch between the energy storage capacitors 1 is switched on when the energy stored in the primary energy storage capacitor reaches a certain step, the concentrated and rapid energy storage and release are realized, when the energy in the energy storage capacitor 1 is enough, the high voltage breakdown is performed between the electrode 17 and the high voltage electrode 14, and the concentrated and outward energy release is equivalent to the switching-on of the main switch.
Example three: the invention relates to a pulse pile foundation bottom expanding construction method and application of a device
When the pulse pile foundation bottom expanding construction method and the pulse pile foundation bottom expanding construction device are applied, geological data are checked, and proper hole forming construction machine and construction method are selected by combining design parameters. Then, the site is leveled, the above-ground obstacles are removed, underground structures and pipelines within the range of the site are marked and treated, the site is kept flat, the line is measured and set out, a control axis is determined, the sideline of the piling site is marked and impacted into the original hole 18.
The pulse pile foundation bottom expanding construction device is put down after the hole is drilled, an energy converter 2 of the pulse pile foundation bottom expanding construction device is downward, an energy storage capacitor 1 is continuously connected behind the energy converter 2, a high-voltage constant-current power supply is connected behind the energy storage capacitor 1, a power switch is turned on to start energy storage work, when the energy storage reaches a discharge target, a self-breakdown gas spark switch is broken down to start energy transmission downwards, the energy storage capacitor 1 below starts energy storage, when the energy storage of the energy storage capacitor 1 reaches the target, an electrode 17 and a high-voltage electrode 14 are broken down to form a shock wave to impact an original hole 18 bottom hole wall to form a pile foundation 19 with an enlarged bottom, the impact frequency is designed according to needs and shock wave energy, after the impact is finished, a driving gear is used for driving a rotating gear 3 positioned outside the upper energy storage capacitor 1 to rotate for a certain angle, and after one circle of impact is finished, the pile foundation is formed by drawing out the pouring filling hole.
The pile foundation with the enlarged bottom and the original hole section are inverted T-shaped, the pile foundation stability is good, the construction efficiency is high, the construction of the impact wave at the bottom of one pile foundation is completed for no more than one hour, the anti-settling and anti-seismic grade of the formed inverted T-shaped pile foundation is correspondingly improved, the energy storage capacitor 1 can be disassembled into a plurality of sections to be respectively transported, the transportation is convenient, the energy storage efficiency is high, the energy is concentrated, the sequential charging and discharging period is short, and the whole construction period is saved.
As described above, the present invention can be preferably implemented, and the above-mentioned embodiments only describe the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope determined by the present invention.
Claims (10)
1. The pulse pile foundation bottom expanding construction method is characterized by comprising the following steps of:
(1) checking geological data, and selecting proper hole forming construction machine machinery and construction methods by combining design parameters;
(2) leveling the field, clearing the above-ground obstacles, marking underground structures and pipelines within the range of the treatment field, and keeping the field flat;
(3) measuring and setting out, and calibrating the center position of the pile foundation;
(4) forming an original hole by applying the construction machine and the construction method selected in the step (1);
(5) putting a pulse pile foundation bottom expanding construction device to the bottom of the original hole after the original hole is punched, beating and rotating the periphery of the punched hole by using shock waves until the pile foundation with the expanded bottom is formed after beating;
(6) and filling holes to form pile foundations.
2. The method for constructing the pulse pile foundation under-reamed according to claim 1, wherein the hole-forming construction tool is a mechanical crawler-type rotary drilling rig or a positive and negative circulation drilling rig.
3. The method as claimed in claim 1, wherein the pulse pile foundation under-reamed construction apparatus strikes the rock and soil layer around the pile bottom with shock waves to form an enlarged bottom pile foundation having an inverted T-shaped cross-section with the original hole.
4. The method of claim 1, wherein the filling of the hole is performed by placing the cage and then pouring concrete.
5. The pulse pile foundation base expansion construction method according to claim 1, wherein the hole forming construction method in the step (1) is dry hole drilling or slurry circulation drilling.
6. The utility model provides a pulse pile foundation expands end construction equipment which characterized in that, the device includes constant current power supply, energy storage capacitor and energy converter, constant current power supply and energy storage capacitor electric connection, energy storage capacitor and energy converter are connected.
7. The apparatus according to claim 6, wherein the energy storage capacitor has a coaxial structure, a metal rod is disposed inside the energy storage capacitor, a metal pipe is disposed outside the energy storage capacitor, an insulating layer is disposed outside the metal rod, and a support is disposed between the insulating layer and the metal pipe.
8. The apparatus according to claim 6, wherein the energy converter comprises a ground electrode and a high voltage electrode, a third insulating layer is disposed outside the high voltage electrode, a housing connection port is disposed outside the third insulating layer, the ground electrode is connected to the housing connection port, the high voltage electrode is electrically connected to the metal rod, and a shock wave output window is disposed on the housing connection port around the high voltage electrode and the ground electrode.
9. The apparatus according to claim 7, wherein the energy storage capacitors are connected in series, the metal pipes of adjacent energy storage capacitors are connected by screw threads, a connector is arranged between the metal rods of adjacent energy storage capacitors, a spring is arranged outside the connector, a lead is arranged in the center of the spring, and two ends of the lead are respectively connected with the metal rods of the adjacent energy storage capacitors; wherein, a rotating gear is sleeved outside one end of one energy storage capacitor positioned at the end head.
10. The apparatus for constructing an enlarged bottom of a pulse pile foundation according to claim 9, wherein a self-breakdown gas spark switch is disposed between two of the plurality of sets of energy storage capacitors, a first electrode is disposed at one end of the self-breakdown gas spark switch, a second electrode is disposed at the other end of the self-breakdown gas spark switch, a housing is disposed outside the self-breakdown gas spark switch, a first insulating layer is disposed between the housing and the first electrode, and a second insulating layer is disposed between the housing and the second electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296209.6A CN110847163A (en) | 2019-12-17 | 2019-12-17 | Pulse pile foundation bottom expanding construction method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296209.6A CN110847163A (en) | 2019-12-17 | 2019-12-17 | Pulse pile foundation bottom expanding construction method and device |
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| Publication Number | Publication Date |
|---|---|
| CN110847163A true CN110847163A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911296209.6A Pending CN110847163A (en) | 2019-12-17 | 2019-12-17 | Pulse pile foundation bottom expanding construction method and device |
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| CN (1) | CN110847163A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577312A (en) * | 2018-11-22 | 2019-04-05 | 福建金东矿业股份有限公司 | A kind of silt geology vibro-replacement stone compacting pile construction method |
| CN109973052A (en) * | 2019-03-25 | 2019-07-05 | 西安闪光能源科技有限公司 | It is a kind of multistage energy storage controllably impact wave generation device |
| CN211922601U (en) * | 2019-12-17 | 2020-11-13 | 徐鹏 | Pile foundation bottom expanding construction device |
-
2019
- 2019-12-17 CN CN201911296209.6A patent/CN110847163A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577312A (en) * | 2018-11-22 | 2019-04-05 | 福建金东矿业股份有限公司 | A kind of silt geology vibro-replacement stone compacting pile construction method |
| CN109973052A (en) * | 2019-03-25 | 2019-07-05 | 西安闪光能源科技有限公司 | It is a kind of multistage energy storage controllably impact wave generation device |
| CN211922601U (en) * | 2019-12-17 | 2020-11-13 | 徐鹏 | Pile foundation bottom expanding construction device |
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