CN108532597B - Piling device and piling method - Google Patents
Piling device and piling method Download PDFInfo
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- CN108532597B CN108532597B CN201810426514.1A CN201810426514A CN108532597B CN 108532597 B CN108532597 B CN 108532597B CN 201810426514 A CN201810426514 A CN 201810426514A CN 108532597 B CN108532597 B CN 108532597B
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- pile body
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/12—Drivers with explosion chambers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/08—Drop drivers with free-falling hammer
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a piling device and a piling method, wherein the device comprises the following components: pile hammer, pile body, supporting mechanism and pile driving force generating mechanism; the support mechanism is used for providing support for the pile hammer and the pile body so that the pile hammer and the pile body can move freely on the support mechanism; the pile driving force generating mechanism comprises a metal channel and/or a liquid channel and is used for driving the pile body to move towards the soil by utilizing a first impact force generated by metal electrified gasification explosion or a second impact force generated by discharging liquid by a power supply or a third impact force generated by metal electrified gasification explosion and metal reaction with the liquid, and meanwhile, the pile hammer moves towards the air under the action of the driving force, and after reaching a certain height, the pile hammer falls freely and hits the pile body for the second time. The invention provides a pile driving device which has the advantages of simple structure, convenient operation, low cost, high efficiency, low energy consumption, safety, reliability, no pollution and suitability for different soils for pile foundation construction.
Description
Technical Field
The invention belongs to the field of pile foundation construction, and particularly relates to a pile driving device and a pile driving method.
Background
The hammering pile sinking method mainly overcomes the resistance of soil to the pile through the impact generated by the falling of a pile hammer, so that the pile is driven into a foundation. The usual hammers include: diesel hammer and hydraulic hammer. The diesel hammer drives the piston to reciprocate through the fuel explosion to hammer the pile, but its mechanical structure is simple, but the energy transfer rate is low, the device reliability is poor, maintenance and repair are frequent, simultaneously is difficult to accurately adjust and control the pile driving force, and exhaust gas oil smoke is very easy to cause serious environmental pollution during operation, and operating personnel working condition is very abominable. The hydraulic hammer drives the impact part to strike the pile driver, and compared with diesel hammer, the hydraulic hammer has shorter stroke and high impact frequency. The impact force can be regulated by regulating the oil pressure, but the hydraulic hammer has the advantages of complex structure, complex control, high manufacturing cost and high energy consumption. In addition, because of the great number of components of the hydraulic system, only the relevant components can be inspected, repaired or replaced once the machine fails, which is time-consuming to inspect and has high maintenance costs.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a piling device and a piling method, and aims to provide a piling device which has the advantages of simple structure, convenient operation, low cost, high efficiency, low energy consumption, safety, reliability, no pollution and suitability for different soils for pile foundation construction, thereby solving the problems of large environmental pollution, poor device reliability, difficult regulation of piling force, complicated control, high manufacturing cost, high maintenance cost and the like of the traditional diesel hammer piling.
To achieve the above object, according to one aspect of the present invention, there is provided a piling device comprising: pile hammer, pile body, supporting mechanism and pile driving force generating mechanism;
the supporting mechanism is used for providing support for the pile hammer and the pile body so that the pile hammer and the pile body can move freely on the supporting mechanism;
the pile driving force generating mechanism comprises a metal channel and/or a liquid channel, and is used for driving the pile body to move towards the soil by utilizing a first impact force generated by metal electrified gasification explosion in the metal channel, a second impact force generated by liquid discharge in the liquid channel by a power supply or a third impact force generated by metal electrified gasification explosion in the metal channel and liquid reaction in the liquid channel, and meanwhile, the pile hammer moves towards the air under the action of the driving force, and after a certain height is reached, the pile hammer falls freely and hits the pile body for the second time, wherein the pile driving force generating mechanism is positioned so as to ensure that the pile body and the pile hammer can be acted as a force in order to be exerted when working
Preferably, the supporting mechanism comprises a pile frame and a pile clamping mechanism, wherein the pile frame is arranged on the ground to provide support for the pile hammer, and meanwhile, the pile hammer is provided with a guide rail structure so as to flexibly move on the pile frame;
the pile clamping mechanism surrounds the outer part of the pile body and is used for clamping and loosening the pile body, and the pile clamping mechanism can drive the pile body to move up and down along the pile frame.
Preferably, the supporting mechanism comprises a sleeve, the pile hammer is arranged on the sleeve, the sleeve is provided with a guide rail structure, a through hole is formed in the center of the sleeve, the pile body is positioned in the through hole, and the sleeve can integrally move upwards or downwards; the hammer and the pile body are movable up and down within the sleeve.
Preferably, the distance between the pile body and the pile hammer can be flexibly adjusted, and before piling begins, the pile hammer is tightly attached to the pile body, or a preset distance is kept between the pile hammer and the pile body, so that piling force can be adjusted.
Preferably, the device further comprises a wire feeding mechanism, wherein the wire feeding mechanism is used for automatically supplementing the metal after the single piling is finished, so that the continuous automatic piling operation is convenient.
Preferably, the device further comprises a liquid replenishing mechanism for automatically replenishing the liquid according to the consumption of the liquid after the end of the piling operation.
Preferably, if the shape of the metal is coil, the pile hammer and/or the pile body can receive electromagnetic force action after the coil is electrified, when the pile hammer and/or the pile body works, a magnetic field is generated after the coil is electrified, the pile hammer and/or the pile body receives electromagnetic force, and the pile hammer and the driving force are overlapped to form the final driving force for piling, so that single piling force, piling efficiency and energy utilization rate of a power supply are further improved.
Preferably, the piling force generating mechanism includes at least one metal channel and/or at least one liquid channel.
According to another aspect of the invention there is provided a method of piling comprising:
the method comprises the steps of arranging a metal channel and/or a liquid channel, wherein the arrangement position of the metal channel and/or the liquid channel is based on the fact that acting force can be generated on a pile body and a pile hammer during working;
pulse current is introduced into the metal in the metal channel so as to enable the metal to be gasified at a high temperature, and explosion occurs to generate a first impact force;
or, discharging the liquid in the liquid channel to generate a second impact force;
or, pulse current is introduced into the metal in the metal channel so as to enable the metal to be gasified at a high temperature to explode, and meanwhile, the metal and liquid in the liquid channel are subjected to chemical reaction to generate a third impact force;
the pile body is driven to move towards the soil by the first impact force, the second impact force or the third impact force serving as driving force for piling, meanwhile, the pile hammer moves towards the air under the action of the driving force, and after the pile hammer moves to a certain height, the pile hammer freely falls down to generate a secondary beating effect on the pile body.
Preferably, the distance between the pile body and the pile hammer can be flexibly adjusted, and before piling begins, the pile hammer is tightly attached to the pile body, or a preset distance is kept between the pile hammer and the pile body, so that piling force can be adjusted.
Preferably, if the shape of the metal is coil, the pile hammer and/or the pile body can receive electromagnetic force action after the coil is electrified, when the pile hammer and/or the pile body works, a magnetic field is generated after the coil is electrified, the pile hammer and/or the pile body receives electromagnetic force, and the pile hammer and the driving force are overlapped to form the final driving force for piling, so that single piling force, piling efficiency and energy utilization rate of a power supply are further improved.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) The invention uses the impact force generated by metal electric explosion, liquid discharge or metal electric explosion and metal and liquid chemical reaction as the driving force in the traditional hammering piling, and has the advantages of simple structure, simple operation, light equipment, high flexibility, low cost and easy construction and field operation. The pile driving process only uses electric energy, is clean and pollution-free, is safe and reliable, has few movement and control parts, is convenient to maintain and long in service life, can adapt to pile driving work of different soils, and is not influenced by pile size and type. The pile foundation is particularly suitable for pile foundation engineering of bridges, estuaries, offshore platforms and the like, and is suitable for the operation requirements of large-diameter ultra-long piles, extra-heavy piles and underwater piles.
(2) The invention adopts the coil wound by the metal material, and the electromagnetic force and the driving force are overlapped to be used as the final driving force of piling, so that the impact force, piling travel and power utilization rate of single piling are further increased. The invention can flexibly regulate and control the piling force and the piling travel by regulating the total energy of single discharge, the metal dosage and/or the liquid dosage adopted by single piling and the initial distance between the pile hammer and the pile body, simultaneously ensure the bearing capacity of the pile and avoid the pile body from being broken due to excessive hammering, thereby achieving the optimal piling effect. The single pulse discharge time is extremely short, the single piling stroke is long, the speed is high, uninterrupted automatic continuous operation can be realized, the piling efficiency is high, and the construction period is shortened.
Drawings
Fig. 1 is a schematic structural view of a pile driving device according to an embodiment of the present invention;
FIG. 2 is a schematic view of another pile driving device according to an embodiment of the present invention;
FIG. 3 is a schematic view of another pile driving device according to an embodiment of the present invention;
FIG. 4 is a schematic view of another pile driving device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a placement mode of a metal channel according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another placement mode of a metal channel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The terms first, second, third and the like in the description and in the claims, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.
In one aspect of the invention there is provided a piling device comprising: pile hammer, pile body, supporting mechanism and pile driving force generating mechanism;
the support mechanism is used for providing support for the pile hammer and the pile body so that the pile hammer and the pile body can move freely on the support mechanism;
the pile driving force generating mechanism comprises a metal channel and/or a liquid channel, and is used for utilizing a first impact force generated by metal in the metal channel through electrifying, gasifying and exploding, a second impact force generated by liquid discharge in the liquid channel through a power supply, or a third impact force generated by metal in the metal channel through electrifying, gasifying and exploding and reacting with liquid in the liquid channel simultaneously to serve as driving force for driving the pile body to move towards soil, and meanwhile, the pile hammer moves towards the air under the action of the driving force, and after a certain height is reached, the pile hammer falls freely and hits the pile body for the second time, wherein the position of the pile driving force generating mechanism is in order to ensure that acting force can be generated on the pile body and the pile hammer during working.
In the embodiment of the invention, after the metal is gasified, the contact surface between the metal and the liquid is greatly increased, so that the impact force generated by the chemical reaction between the metal and the liquid is improved.
In the embodiment of the present invention, the metal material may be any metal material such as aluminum, iron or tungsten, and the liquid material may be any liquid material such as water, and specifically, what metal material and what liquid material are used for chemical reaction, which is not limited in the embodiment of the present invention.
In embodiments of the present invention where the pile force generating mechanism comprises at least one metal channel and/or at least one liquid channel, the specific number of uses the embodiments of the present invention are not limited in uniqueness.
In the embodiment of the present invention, the metal may be wire-shaped, ribbon-shaped, foil-shaped, etc., and the specific shape adopted in the embodiment of the present invention is not limited uniquely.
As an alternative embodiment, the supporting mechanism comprises a pile frame and a pile clamping mechanism, wherein the pile frame is arranged on the ground to provide support for the pile hammer, and meanwhile, the pile hammer is provided with a guide rail structure so that the pile hammer can flexibly move on the pile frame; the pile clamping mechanism surrounds the outer part of the pile body and is used for clamping and loosening the pile body, and the pile clamping mechanism can drive the pile body to move up and down along the pile frame. The pile clamping mechanism can be flexibly replaced, so that pile foundation requirements of different shapes and types are met.
As an alternative implementation mode, the supporting mechanism comprises a sleeve, the pile hammer is arranged on the sleeve, the sleeve is provided with a guide rail structure, a through hole is formed in the center of the sleeve, the pile body is positioned in the through hole, and the sleeve can integrally move upwards or downwards; the hammer and pile body can move up and down in the sleeve.
As an alternative implementation mode, the sleeve can be a sealed cover, or the inside of the sleeve adopts a vacuum environment, or the sound absorbing material is covered on the sleeve, so that the impact of the pile hammer and the pile body is ensured to occur inside the guide sleeve, the noise of piling is greatly eliminated, and meanwhile, the sleeve can have a guide effect.
As an alternative implementation mode, the distance between the pile body and the pile hammer can be flexibly adjusted, and before piling begins, the pile hammer is tightly attached to the pile body, or a preset distance is kept between the pile hammer and the pile body, so that piling force can be adjusted.
The preset distance can be determined according to actual needs.
The piling force can be flexibly controlled by adjusting the dosage of metal and/or liquid and the initial distance between the pile hammer and the pile body, so that the optimal piling effect is achieved.
As an alternative embodiment, the device further comprises a wire feeding mechanism, wherein the wire feeding mechanism is used for automatically supplementing metal after the single piling is finished, so that the continuous and automatic piling operation is facilitated.
As an alternative embodiment, the device further comprises a liquid replenishing mechanism for automatically replenishing the liquid according to the consumption of the liquid after the end of the piling operation.
As an alternative implementation mode, if the shape of the metal is a coil, the pile hammer and/or the pile body can be subjected to electromagnetic force after the coil is electrified, when the pile hammer and/or the pile body works, a magnetic field is generated after the coil is electrified, the pile hammer and/or the pile body is subjected to electromagnetic force, and the pile hammer and/or the pile body and the driving force generated by the metal channel and/or the liquid channel are superposed to form the final driving force for piling, so that the single piling force, the piling efficiency and the energy utilization rate of the power supply are further improved.
When the shape of the metal is coil, the pile hammer and/or pile body may be subjected to electromagnetic force after the coil is energized, for example, the pile hammer and/or pile body has a certain conductivity, or a conductive material or component is installed on the pile hammer and/or pile body, or a metal coil is placed on the pile hammer and/or pile body, and in which manner, the embodiment of the present invention is not limited uniquely.
The coil can be an integral single coil or a plurality of small coils, is convenient to expand capacity and flexible to assemble, and the mode is not limited uniquely.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, the pile driving device according to the embodiment of the present invention includes: pile frame 1, pile hammer 2, pile body 3, pile clamping mechanism 4, coil 5, wire feeding mechanism 6.
The pile frame 1 is arranged on the ground, provides support for the pile hammer 2 and the pile clamping mechanism 4, and has a guide rail structure; the pile hammer 2 is an object with a certain mass, the pile hammer 2 is arranged on the pile frame 1, and the pile hammer 2 can freely move on the pile frame 1; the coil 5 is embedded in the groove of the pile clamping mechanism 4 (as shown in fig. 5); the pile clamping mechanism 4 is used for clamping and loosening the pile body 3 and can drive the pile body 3 to move up and down in the guide rail; the hammers 2 are closely attached to the top (i.e., pile head) of the pile body 3 or held at a predetermined interval in advance.
The piling method comprises the following steps:
(1) Setting the pile frame 1 on the ground, and connecting the pile hammer 2 with the pile frame 1 to enable the pile hammer to freely move on the pile frame 1;
(2) The pile clamping mechanism 4 clamps the pile body 3, the coil 5 is arranged in a groove of the pile clamping mechanism 4, water is filled in the groove, and the pile clamping mechanism 4 can drive the pile body 3 to freely move on the pile frame 1;
(3) Before piling begins, the pile hammer 2 is closely attached to the top (i.e. pile head) of the pile body 3, or a certain interval is held in advance. The coil 5 is electrified to generate a magnetic field, induced eddy current is generated in the pile hammer 2, the eddy current and the magnetic field interact to generate electromagnetic force, meanwhile, the coil 5 is wound by adopting aluminum materials, the Joule heating effect is remarkable under high current, energy is accumulated in the coil, aluminum wires are gasified at high temperature, explosion occurs to generate huge shock waves, meanwhile, after aluminum is gasified, the contact surface between the aluminum and water is greatly increased, the aluminum and the water are subjected to chemical reaction to generate hydrogen, huge energy is released, and the impact force is further increased. The three forces are overlapped to become driving force for piling, the pile body 3 is driven to move towards soil, meanwhile, the pile hammer 2 moves towards the air under the action of impact force, and after the pile hammer 2 moves to a certain height, the pile hammer 2 freely falls down to generate secondary beating effect on the pile body 3.
(4) After the single pulse discharge is completed, the wire feeding mechanism 6 is started, and a new coil is automatically replaced.
(5) Repeating the steps (3) and (4) until the pile body 3 is completely driven into the soil.
In an alternative embodiment, the initial spacing between the pile hammer 2 and the pile body 3 can be adjusted according to the result of single pile driving, so that the stroke of the next pile driving can be flexibly regulated.
In an alternative embodiment, a water replenishment mechanism may be added to automatically replenish the water consumed by the chemical reaction.
Example 2
As shown in fig. 2, the pile driving device according to the embodiment of the present invention has the general structure including: pile hammer 2, pile body 3, aluminium wire 7, pile cap 8 and sleeve 9.
The pile hammer 2 is arranged on the sleeve 9; the top (i.e. pile head) of the pile body 3 is provided with a pile cap 8 which is connected with the pile body 3, can be disassembled and assembled at any time, and is easy to replace; the pile cap 8 is provided with a water tank, the aluminum wires 7 are distributed in parallel in a strip shape in the water tank (as shown in figure 6), and the water tank is filled with water; the sleeve 9 is provided with a guide rail structure, the center of the sleeve is provided with a through hole, the pile body 3 is positioned in the through hole, and the sleeve 9 can integrally move upwards or downwards; the pile hammer 2 and the pile body 3 can move up and down in the sleeve 9; the hammer 2 is either in close proximity to the pile cap 8 or at some initial distance from the pile cap 8 to ensure proper driving force.
The piling method comprises the following steps:
(1) The pile hammer 2 is arranged in the sleeve 9, and the pile cap 8 is connected to the pile hammer 3 through bolt fastening;
(2) The pile cap 8 is provided with a water tank, the aluminum wires 7 are arranged in the water tank in parallel along the strip shape, and the water tank is filled with water.
(3) Before piling begins, the pile hammer 2 is closely attached to the pile cap 8, or a certain distance is held in advance. The aluminum wire 7 is electrified, the joule heating effect enables energy to be accumulated in the aluminum wire rapidly, the aluminum wire is gasified at a high temperature and explodes to generate huge shock waves, meanwhile, after the aluminum wire is gasified, the contact surface between the aluminum wire and water is greatly increased, the aluminum wire and the water are subjected to chemical reaction to generate hydrogen, and meanwhile, huge energy is released, so that the impact force is further increased. The pile hammer 2 moves to the air under the action of impact force, and after the pile hammer 2 moves to a certain height, the pile hammer 2 falls freely, and a secondary striking effect is generated on the pile body 3.
(4) And after the single discharge is completed, the aluminum wire is refilled.
(5) Repeating the steps (3) and (4) until the pile body 3 is completely driven into the soil.
In an alternative embodiment, the initial distance between the pile hammer 2 and the pile cap 8 and the amount of aluminum wires can be adjusted according to the single pile driving result, so that the stroke of the next pile driving can be flexibly controlled.
In an alternative embodiment, a wire feeding mechanism and a water supplementing mechanism can be additionally arranged to automatically supplement consumed aluminum wires and water.
In an alternative embodiment, the sleeve 9 may be additionally provided with a sealing cover structure, or a vacuum environment is arranged inside, or a sound absorbing material is arranged, so that the pile hammer 2 is ensured to strike the pile body 3 in the sealing cover, and the noise of pile driving is greatly eliminated.
Example 3
As shown in fig. 3, the pile driving device according to the embodiment of the present invention has the general structure including: pile hammer 2, pile body 3, coil 5, sleeve 9.
The pile hammer 2 is arranged on the sleeve 9, a water tank is arranged on the pile hammer, aluminum wires are wound into a coil form (coil 5) and are arranged in the water tank (as shown in figure 5), and the water tank is filled with water; the sleeve 9 is provided with a guide rail structure, the center of the sleeve is provided with a through hole, the pile body 3 is positioned in the through hole, and the sleeve 9 can integrally move upwards or downwards; the pile hammer 2 and the pile body 3 can move up and down in the sleeve 9; the hammer 2 is closely attached to the pile body 3 or has a certain initial distance from the pile body 3 to ensure a proper driving force.
The piling method comprises the following steps:
(1) The pile hammer 2 is arranged in the sleeve 9, a water tank is arranged on the pile hammer 2, aluminum wires are wound into a coil form and are arranged in the water tank, and the water tank is filled with water.
(2) Before piling begins, the pile hammer 2 is closely attached to the pile body 3, or a certain interval is held in advance. The coil 5 is electrified to generate a magnetic field, induced eddy current is generated in the pile hammer 2, the eddy current and the magnetic field interact to generate electromagnetic force, meanwhile, the coil 5 is wound by adopting aluminum materials, the Joule heating effect is remarkable under high current, energy is accumulated in the coil, aluminum wires are gasified at high temperature, explosion occurs to generate huge shock waves, meanwhile, after aluminum is gasified, the contact surface between the aluminum and water is greatly increased, the aluminum and the water are subjected to chemical reaction to generate hydrogen, huge energy is released, and the impact force is further increased. The three forces are overlapped to become driving force for piling, the pile body 3 is driven to move towards soil, meanwhile, the pile hammer 2 moves towards the air under the action of impact force, and after the pile hammer 2 moves to a certain height, the pile hammer 2 freely falls down to generate secondary beating effect on the pile body 3.
(3) And after the single discharge is completed, the aluminum wire is refilled.
(4) Repeating the steps (2) and (3) until the pile body 3 is completely driven into the soil.
In an alternative embodiment, the initial distance between the pile hammer 2 and the pile body 3 and the amount of aluminum wires can be adjusted according to the single pile driving result, so that the stroke of the next pile driving can be flexibly controlled.
In an alternative embodiment, a wire feeding mechanism and a water supplementing mechanism can be additionally arranged to automatically supplement consumed aluminum wires and water.
In an alternative embodiment, the sleeve 9 may be additionally provided with a sealing cover structure, or a vacuum environment is arranged inside, or a sound absorbing material is arranged, so that the pile hammer 2 is ensured to strike the pile body 3 in the sealing cover, and the noise of pile driving is greatly eliminated.
Example 4
As shown in fig. 4, the pile driving device according to the embodiment of the present invention has the general structure including: pile hammer 2, pile body 3, pile hammer coil 10, pile body coil 11, sleeve 9.
The pile hammer 2 is arranged on the sleeve 9, a water tank is arranged on the pile hammer, the pile hammer coil 10 is embedded in the water tank, and the water tank is filled with water; a water tank is arranged at the top of the pile body 3, a pile body coil 11 is arranged in the water tank, and the water tank is filled with water; the sleeve 9 is provided with a guide rail structure, the center of the sleeve is provided with a through hole, the pile body 3 is positioned in the through hole, and the sleeve 9 can integrally move upwards or downwards; the pile hammer 2 and the pile body 3 can move up and down in the sleeve 9; the hammer 2 is closely attached to the pile body 3 or has a certain initial distance from the pile body 3 to ensure a proper driving force.
The piling method comprises the following steps:
(1) The pile hammer 2 is arranged in the sleeve 9, a water tank is arranged on the pile hammer 2, the pile hammer coil 10 is arranged in the water tank, and the water tank is filled with water;
(2) The pile body coil 11 is arranged in a water tank at the top of the pile body 3, and the water tank is filled with water;
(3) Before piling begins, the pile hammer 2 is closely attached to the top (i.e. pile head) of the pile body 3, or a certain interval is held in advance. Pulse currents with opposite polarities are supplied to the pile body coil 11 and the pile hammer coil 10, a magnetic field is generated in space, and the current and the magnetic field interact to generate huge repulsive force between the coils. Meanwhile, the pile hammer coil 10 and the pile body coil 11 are wound by adopting aluminum materials, the Joule heating effect is remarkable under high current, energy is accumulated in the coil, aluminum wires are gasified at high temperature, explosion occurs to generate huge shock waves, meanwhile, after aluminum gasification, the contact surface with water is greatly increased, aluminum and water are subjected to chemical reaction to generate hydrogen, huge energy is released, and the impact force is further increased. The three forces are overlapped to become driving force for piling, the pile body 3 is driven to move towards soil, meanwhile, the pile hammer 2 moves towards the air under the action of impact force, and after the pile hammer 2 moves to a certain height, the pile hammer 2 freely falls down to generate secondary beating effect on the pile body 3.
(4) After the single pulse discharge is completed, the wire feeding mechanism 6 is started, and a new coil is automatically replaced.
(5) Repeating the steps (3) and (4) until the pile body 3 is completely driven into the soil.
In an alternative embodiment, the initial spacing between the pile hammer 2 and the pile body 3 can be adjusted according to the result of single pile driving, so that the stroke of the next pile driving can be flexibly regulated.
In an alternative embodiment, a water replenishment mechanism may be added to automatically replenish the water consumed by the chemical reaction.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A piling device, comprising: pile hammer, pile body, supporting mechanism and pile driving force generating mechanism;
the supporting mechanism is used for providing support for the pile hammer and the pile body so that the pile hammer and the pile body can move freely on the supporting mechanism;
the pile driving force generating mechanism comprises a metal channel and a liquid channel, and is used for driving the pile body to move towards the soil by utilizing a first impact force generated by metal electrified gasification explosion in the metal channel, a second impact force generated by liquid discharge in the liquid channel by a power supply and a third impact force generated by metal electrified gasification explosion in the metal channel and liquid reaction in the liquid channel, and meanwhile, the pile hammer moves towards the air under the action of the driving force, and after a certain height is reached, the pile hammer falls freely and strikes the pile body for the second time, wherein the position of the pile driving force generating mechanism is used for ensuring that the pile body and the pile hammer can be acted as a force when working.
2. The apparatus of claim 1, wherein the support mechanism comprises a pile frame and a pile clamping mechanism, the pile frame being set up on the ground to provide support for the pile hammer while having a rail structure to enable flexible movement of the pile hammer on the pile frame;
the pile clamping mechanism surrounds the outer part of the pile body and is used for clamping and loosening the pile body, and the pile clamping mechanism can drive the pile body to move up and down along the pile frame.
3. The apparatus of claim 1, wherein the support mechanism comprises a sleeve on which the hammer is mounted, the sleeve having a rail structure, a through hole being formed in the center of the sleeve, the pile body being located in the through hole, the sleeve being movable integrally upward or downward; the hammer and the pile body are movable up and down within the sleeve.
4. A device according to claim 2 or 3, wherein the distance between the pile body and the hammer is flexibly adjustable, and the hammer is pressed against the pile body before driving, or a predetermined distance is maintained between the hammer and the pile body to adjust the driving force.
5. The apparatus of claim 4, further comprising a wire feeder for automatically replenishing the metal after a single pile is completed, facilitating continuous automatic performance of the pile driving operation.
6. The apparatus of claim 5, further comprising a liquid replenishment mechanism for automatically replenishing the liquid upon completion of the piling operation, based on consumption of the liquid.
7. The device according to claim 4, wherein if the metal is in the shape of a coil, the pile hammer and/or the pile body can be subjected to electromagnetic force after the coil is electrified, and when the device works, the coil generates a magnetic field after the coil is electrified, and the pile hammer and/or the pile body is subjected to electromagnetic force and is overlapped with the driving force to form a final driving force for piling, so that single piling force, piling efficiency and energy utilization rate of a power supply are further improved.
8. The apparatus of claim 1, wherein the pile force generating mechanism comprises at least one metal channel and at least one liquid channel.
9. A method of piling, comprising:
the method comprises the steps of arranging a metal channel and a liquid channel, wherein the arrangement positions of the metal channel and the liquid channel are used for ensuring that acting force can be generated on a pile body and a pile hammer during working;
pulse current is introduced into the metal in the metal channel so as to enable the metal to be gasified at a high temperature, and explosion occurs to generate a first impact force;
discharging the liquid in the liquid channel to generate a second impact force;
pulse current is introduced into the metal in the metal channel so as to enable the metal to be gasified at a high temperature to explode, and meanwhile, the metal and liquid in the liquid channel are subjected to chemical reaction to generate a third impact force;
the first impact force, the second impact force and the third impact force are used as driving force for piling to drive the pile body to move towards soil, meanwhile, the pile hammer moves towards the air under the action of the driving force, and after the pile hammer moves to a certain height, the pile hammer freely falls down to generate a secondary hitting effect on the pile body.
10. The method according to claim 9, wherein if the metal is in the shape of a coil, the pile hammer and/or the pile body can be subjected to electromagnetic force after the coil is electrified, and when the pile hammer and/or the pile body is subjected to electromagnetic force after the coil is electrified, the pile hammer and/or the pile body is superposed with the driving force to become a final driving force for piling, so that single piling force, piling efficiency and energy utilization rate of a power supply are further improved.
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| CN1160191A (en) * | 1995-10-30 | 1997-09-24 | 株式会社水山特装 | Rock fragmentation system using gold schmidt method |
| CN202989922U (en) * | 2012-08-08 | 2013-06-12 | 张文 | Piling continuous firing |
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| US5573307A (en) * | 1994-01-21 | 1996-11-12 | Maxwell Laboratories, Inc. | Method and apparatus for blasting hard rock |
| CN1160191A (en) * | 1995-10-30 | 1997-09-24 | 株式会社水山特装 | Rock fragmentation system using gold schmidt method |
| CN202989922U (en) * | 2012-08-08 | 2013-06-12 | 张文 | Piling continuous firing |
| CN208395819U (en) * | 2018-05-07 | 2019-01-18 | 华中科技大学 | A kind of piling equipment |
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