CN113322931A - Soft soil foundation consolidates compaction stake construction equipment - Google Patents
Soft soil foundation consolidates compaction stake construction equipment Download PDFInfo
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- CN113322931A CN113322931A CN202110713752.2A CN202110713752A CN113322931A CN 113322931 A CN113322931 A CN 113322931A CN 202110713752 A CN202110713752 A CN 202110713752A CN 113322931 A CN113322931 A CN 113322931A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- Agronomy & Crop Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a soft soil foundation reinforcing compaction pile construction device, and belongs to the technical field of building construction. The hammering mechanism of the compaction pile construction device is coaxially arranged with the pore-forming pile pipe and can enter the pore-forming pile pipe; the bottom of the first bearing table is provided with a first connecting shaft, and the hammering mechanism can enter the hole-forming pile pipe to hammer the first bearing table; the pile bottom tamping hammer is positioned inside the pore-forming pile pipe, the top of the pile bottom tamping hammer is provided with a second connecting shaft, and a spring is arranged between the first connecting shaft and the second connecting shaft; the fixed seat is fixed at the bottom of the first bearing table; a plurality of horizontal percussion hammers are connected with the fixing base through connecting push rods, the upper ends of the connecting push rods are hinged with the fixing base, the lower ends of the connecting push rods are hinged to the end portions, close to the central shaft of the pore-forming pile pipe, of the horizontal percussion hammers, and through holes, through which the horizontal percussion hammers penetrate out, are formed in the pore-forming pile pipe. The soft soil foundation and the lime soil compaction pile of the compaction pile construction device are connected through the side hole filled with the lime soil, so that the integrity and the integrity of the connection of the soft soil base layer and the lime soil compaction pile can be improved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a soft soil foundation reinforcing compaction pile construction device.
Background
With the vigorous development of the traffic construction industry in China, the construction of high-speed railways and highways is steadily promoted, and the high-standard, high-load and high-speed engineering projects have higher requirements on the bearing capacity of the foundation. On one hand, the foundation is required to be stable, and on the other hand, the post-construction settlement is required to meet the relevant standard requirements. In engineering construction, it is found that soft soil layers with high water content, high compressibility, low strength and poor bearing capacity are distributed in certain areas, namely soft soil foundations. Under the action of upper load, the soft soil foundation is easy to have the problems of instability, excessive settlement and the like, the engineering quality is seriously influenced, and the construction period is prolonged.
The lime-soil compacted pile is made up by mixing plain soil and hydrated lime according to a certain proportion, adopting the methods of pipe sinking, impact and explosion expansion to form pile hole with a certain diameter in the foundation, then filling lime-soil into the hole layer by layer. The lime soil compaction pile for reinforcing the soft soil foundation has two functions: the soil compaction effect of the soil compaction pile in the foundation can reinforce the physical and chemical reaction between the soil between the piles and the lime soil, so that the bearing capacity of the foundation soil of the soft soil ground is improved. The lime-soil compaction pile foundation has the advantages of simple construction, short construction period, easy quality control, low construction cost and the like, and becomes a commonly adopted foundation treatment technology.
In the prior art, the compaction pile construction device is used for firstly drilling pile holes and then filling lime soil layer by layer after the pile holes are formed. However, a regular and obvious contact surface exists between the compaction pile and the soft soil foundation of the side wall, and the peripheral soft soil can form active soil pressure on the compaction pile, so that concentrated extrusion on the compaction pile is generated, the compaction pile is easy to incline and settle, even the strength of the compaction pile is reduced, and the effect of the compaction pile on reinforcing the soft soil foundation is further influenced.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a construction device for a soft soil foundation reinforcing compaction pile.
The invention provides a soft soil foundation reinforcing compaction pile construction device, which comprises a pore-forming pile pipe and a pile driving mechanism, wherein the pile driving mechanism is positioned above the pore-forming pile pipe and is used for hammering the pore-forming pile pipe until the pore-forming pile pipe sinks into a target position, and the soft soil foundation reinforcing compaction pile construction device also comprises:
the hammering mechanism is coaxially arranged with the pore-forming pile pipe and can enter the pore-forming pile pipe;
the compacting mechanism comprises
The first bearing platform is positioned inside the pore-forming pile pipe, the bottom of the first bearing platform is provided with a first connecting shaft, and the hammering mechanism can enter the pore-forming pile pipe to hammer the first bearing platform;
the pile bottom tamping hammer is positioned inside the pore-forming pile pipe and used for tamping soil in the pore-forming pile pipe, a second connecting shaft is arranged at the top of the pile bottom tamping hammer, and a spring is arranged between the first connecting shaft and the second connecting shaft;
the fixed seat is fixed at the bottom of the first bearing table, and the top of the first connecting shaft is fixedly connected with the fixed seat;
a plurality of horizontal percussion hammers are connected with the fixing base through a connecting push rod, the upper end of the connecting push rod is hinged with the fixing base, the lower end of the connecting push rod is hinged with the end part of the horizontal percussion hammer close to the central shaft of the pore-forming pile pipe, and a through hole for the horizontal percussion hammers to penetrate out of the pore-forming pile pipe is formed in the pore-forming pile pipe.
Preferably, the hole-forming pile pipe is provided with an inlet and outlet channel corresponding to each horizontal impact hammer one by one, the inlet and outlet channel is connected with a material conveying channel, and the material conveying channel is connected with a feeding device.
Preferably, the upper half part of the second connecting shaft is a hollow structure, and the lower end of the first connecting shaft is located in the hollow structure of the second connecting shaft and is connected with the inner wall of the hollow structure in a sliding manner.
Preferably, the material conveying channel is connected with the feeding device through a material conveying hose, and the material conveying hose is further provided with a valve.
Preferably, the inner wall of the pore-forming pile tube is provided with a sliding groove along the height direction of the pore-forming pile tube, the first bearing platform is provided with a sliding block, and the sliding block is connected with the sliding groove in a sliding manner.
Preferably, the pile driving mechanism comprises a pile hammer including a first hammer body and a second hammer body, the first hammer body is provided with a containing cavity along the axis thereof, the second hammer body is located in the containing cavity, the first hammer body is connected with a driving mechanism of the pile driving mechanism, and the second hammer body is connected with a power mechanism of the hammering mechanism through a traction steel rope.
Preferably, the pile bottom tamping hammer is detachably connected with the bottom of the hole-forming pile pipe.
Preferably, the horizontal impact hammer comprises a hammer head and a power rod, wherein one end of the power rod is fixedly connected with the hammer head, and the other end of the power rod is hinged with the end part of the connecting push rod.
Preferably, the connecting end of the material conveying channel and the inlet and outlet channel is arranged at the position close to the side wall of the hole-forming pile pipe.
Preferably, one end of the access passage, which is far away from the hole-forming pile pipe, is provided with a limiting part for preventing the horizontal impact hammer from sliding out of the access passage.
Compared with the prior art, the invention has the beneficial effects that: in the process of driving the pile hole, the compaction pile construction device of the invention extrudes the soil in the hole-forming pile tube through the pile bottom tamping hammer of the compaction mechanism to extrude the soil downwards or to the periphery to form the pile wall with certain strength layer by layer, simultaneously forms a side hole on the side wall through the horizontal impact hammer, fills the side hole with the lime soil, forms a plurality of pile holes filled with the lime soil at different heights on the inner wall of the pile hole along with the increase of the depth of the pile hole, fills the lime soil layer by layer in the pile hole to form a composite foundation by the soft soil base layer, the lime soil compaction pile and the side hole filled with the lime soil, the soft soil base layer and the lime soil compaction pile are connected through the side hole filled with the lime soil, can improve the integrity and integrity of the connection of the soft soil base layer and the lime soil compaction pile, can increase the contact surface between the soft soil foundation and the lime soil compaction pile through the side hole filled with the lime soil to decompose the concentrated stress applied on the lime soil compaction pile by the side wall base layer, the bearing capacity and the stability of the compaction pile are improved.
Drawings
FIG. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a schematic view showing the effect of filling the side hole formed in the sidewall of the pile hole with lime soil;
FIG. 4 is an enlarged view of a portion of the compaction mechanism of the invention.
Description of reference numerals:
1. the pile driving device comprises a hole forming pile pipe, 2 parts of a pile driving mechanism, 21 parts of a first hammer body, 22 parts of a second hammer body, 3 parts of a hammering mechanism, 4 parts of a compacting mechanism, 41 parts of a first bearing platform, 42 parts of a pile bottom tamping hammer, 43 parts of a first connecting shaft, 44 parts of a second connecting shaft, 45 parts of a spring, 46 parts of a fixed seat, 47 parts of a horizontal impact hammer, 48 parts of a connecting push rod, 7 parts of an inlet and outlet channel, 8 parts of a material conveying channel and 9 parts of a feeding device.
Detailed Description
Detailed description of the preferred embodimentsthe following detailed description of the present invention will be given with reference to the accompanying drawings 1-4, but it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
The invention provides a soft soil foundation reinforcing compaction pile construction device, which is provided with a pore-forming pile tube 1 and a pile driving mechanism 2, wherein the pile driving mechanism 2 is positioned above the pore-forming pile tube 1 and is used for hammering the pore-forming pile tube 1 until the pore-forming pile tube 1 sinks into a target position, and the soft soil foundation reinforcing compaction pile construction device also comprises:
the hammering mechanism 3 is coaxially arranged with the pore-forming pile pipe 1 and can enter the pore-forming pile pipe 1;
a compacting mechanism 4 comprising
The first bearing platform 41 is positioned inside the pore-forming pile tube 1, the bottom of the first bearing platform is provided with a first connecting shaft 43, and the hammering mechanism 3 can enter the pore-forming pile tube 1 to hammer the first bearing platform 41;
the pile bottom tamping hammer 42 is positioned inside the pore-forming pile pipe 1 and used for tamping soil in the pore-forming pile pipe 1, the top of the pile bottom tamping hammer is provided with a second connecting shaft 44, and a spring 45 is arranged between the first connecting shaft 43 and the second connecting shaft 44;
the fixed seat 46 is fixed at the bottom of the first bearing table 41, and the top of the first connecting shaft 43 is fixedly connected with the fixed seat 46;
a plurality of horizontal percussion hammers 47 are connected with fixing base 46 through connecting push rod 48, connecting push rod 48's upper end is articulated with fixing base 46, and the lower extreme articulates at the tip that horizontal percussion hammer 47 is close to pore-forming pile pipe 1 center pin, be equipped with the through-hole that is used for each horizontal percussion hammer 47 to wear out in pore-forming pile pipe 1 on the pore-forming pile pipe 1.
The pile driving mechanism 2 of the present embodiment is mainly used for driving the bored pile tube 1 into a target depth, and on this basis, the present embodiment further provides a compacting mechanism 4 for compacting the soil inside the bored pile tube 1 and the sidewall of the pile hole in the bored pile tube 1, the first bearing platform 41 of the compacting mechanism 4 is mainly used for providing a downward pressure to the pile bottom tamping hammer 42 under the action of the hammering mechanism 3, and the first connecting shaft 43 moves downward along with the downward movement of the first bearing platform 41, the spring 45 compresses, when the first connecting shaft 43 moves to contact with the second connecting shaft 46, the pressure is transmitted to the second connecting shaft 46, so that the pile bottom tamping hammer 42 compacts the bottom soil downward, and at the same time, when the first bearing platform 41 moves downward, the connecting push rod 48 hinged on the fixing base 46 applies an outward thrust to the horizontal impact hammer 47, so that the horizontal impact hammer 47 penetrates out of the bored pile tube 1 into the soil of the sidewall, and form the side opening on the sidewall, along with moving down constantly of the pile tube 1 of pore-forming, also form a plurality of evenly distributed side openings on the sidewall from bottom to top, after hammering the action is finished, the spring 45 resets, the first plummer 41 resets, go on repeatedly, until the stake hole shaping. In the embodiment, after the hammering mechanism 3 performs hammering action, not only can the bottom of the pile hole be tamped, but also side holes which are uniformly distributed can be formed on the side wall, and meanwhile, soil on the side wall is compacted in the process of forming the side holes; the horizontal impact hammer 47 of this embodiment can not only realize multi-point compaction of the soil of the side wall, but also form a plurality of side holes regularly distributed from top to bottom on the side wall, after the pile hole is drilled, the pile hole is filled with the lime soil, and the pile hole is hammered and compacted layer upon layer, the filled lime soil can partially enter the side hole of the side wall, so that the soft soil base layer, the lime soil compaction pile and the side hole filled with the lime soil form a composite foundation, the soft soil base layer and the lime soil compaction pile are connected through the side hole filled with the lime soil, the integrity and integrity of the connection of the soft soil base layer and the lime soil compaction pile can be improved, the contact surface between the soft soil base layer and the lime soil compaction pile can be increased through the side hole filled with the lime soil, the concentrated stress applied on the lime soil compaction pile by the side wall base layer can be decomposed, and the bearing capacity and stability of the compaction pile can be improved.
Example 2
On the basis of embodiment 1, it may appear that in the piling process, the upper side hole is destroyed under the vibration effect, and also can not ensure the side hole that the horizontal impact hammer 47 that the lime soil can be densely filled strikes after filling the lime soil in the later stage, so this embodiment is equipped with the access way 7 with each horizontal impact hammer 47 one-to-one on the pore-forming pile tube 1 on the basis of embodiment 1, the access way 7 is connected with the material conveying channel 8, the material conveying channel 8 is connected with the feeding device 9. The access way 7 is not only as the access way of horizontal jump bit 47, but also as the transfer passage of defeated material passageway 8, through the mode of filling the lime soil immediately after the horizontal side opening forms, can avoid because the vibration of later stage pile driving operation leads to lateral wall soil displacement, and then cause the destroyed problem of horizontal side opening, simultaneously at the side opening shaping back founding immediately fill the lime soil, can ensure in the accurate side opening that the entering of lime soil corresponds, the more even law of distribution of lateral direction lime soil at the lateral wall, can balance the internal stress of lateral wall.
It should be noted that, when the acting force of the hammering mechanism 3 is smaller than that when the horizontal impact hammer 47 impacts the side wall to form a lateral side hole when delivering the dirt to the horizontal side hole of the side wall, the acting force applied to the first bearing table 41 by the hammering mechanism 3; when feeding soil into the horizontal side holes of the side wall, the force of the hammer mechanism 3 is preferably such that the soil is packed into the horizontal side holes without applying pressure to the pile bottom ramming ram 42. It should be noted that the amount of soil entering the access passage 7 is metered each time to ensure the filling amount of soil in the side hole.
Example 3
On the basis of the above embodiment, in order to guide the downward movement track of the first connecting shaft 43, and avoid reducing the impact on the second connecting shaft 44 due to the deviation of the first connecting shaft 43 and reducing the tamping effect, the upper half portion of the second connecting shaft 44 is a hollow structure, and the lower end of the first connecting shaft 43 is located in the hollow structure of the second connecting shaft 44 and is slidably connected with the inner wall of the hollow structure.
Example 4
On the basis of the above embodiment, as a preferable mode, the material conveying channel 8 is connected with the feeding device 9 through a material conveying hose, and the material conveying hose is further provided with a valve. The valve is used for opening after the side hole is formed and allowing the materials to enter the inlet and outlet channel 7 through the material conveying channel 8 and closing after the filling is finished, the valve can be an electromagnetic valve, the pressure sensor is arranged on the first bearing platform 41 and electrically connected with the pressure sensor and the electromagnetic valve, the microprocessor is also electrically connected with a timer, the pressure sensor senses the impact force of the hammering mechanism on the first bearing platform 41 and transmits a pressure signal to the microprocessor, the microprocessor starts the timer to start timing, after the set time is counted, the electromagnetic valve is opened, the soil enters the inlet and outlet channel 7, the hammering mechanism impacts the first bearing platform 41 again, the pressure sensor detects the pressure again and transmits the pressure signal to the microprocessor for storage, the soil is filled into the side hole under the thrust action of the horizontal impact hammer 47 along with the descending of the first bearing platform 41, and finishing the intelligent control packing operation of the side hole.
As another preferred mode, the inner wall of the hole-forming pile tube 1 is provided with a sliding groove along the height direction thereof, and the first bearing platform 41 is provided with a sliding block, and the sliding block is slidably connected with the sliding groove. Aims to limit the rotation or dislocation of the horizontal impact hammer 47 through the sliding chute and realize the purpose of accurately feeding the filler into the side hole.
Example 5
Because the independent pile driving mechanism and the independent hammering mechanism are used, the equipment cost is high, the carrying cost is high, and meanwhile, the two equipment are required to be alternately used and operated, so that the pile driving mechanism is improved on the basis of the existing pile driving mechanism, and the pile driving requirement of the embodiment is convenient to apply. The pile driving mechanism 2 of this embodiment includes that the pile hammer includes first hammer block 21 and second hammer block 22, be equipped with along its axis in the first hammer block 21 and hold the chamber, the second hammer block 22 is located and holds the intracavity, first hammer block is connected with pile driving mechanism 2's actuating mechanism, the second hammer block 22 is connected with the power unit of hammering mechanism 3 through drawing the steel cable.
The first hammer block 21 of the pile driving mechanism of this embodiment is used for hammering pore-forming pile pipe 1, and the second hammer block 22 is used for hammering first plummer, and first hammer block 21 and second hammer block 22 overlap each other and establish, and coaxial setting, can avoid the interact of two hammer blocks, and the second hammer block 22 is connected rather than power unit through drawing the steel cable, and this power unit locates on the pile driving mechanism, realize two mutual noninterferes' purpose of hammering operation.
In the actual construction process, generally, the hole-forming pile tube 1 is hammered to move the hole-forming pile tube 1 downward, then the first bearing platform 41 is hammered to perform sidewall compaction and side hole operation, the side hole filling operation is performed, after the hole-forming pile tube 1 moves downward to a target position, the pile hole is formed, the pile hole is filled, and the construction operation of the compacted pile is completed.
Further, the pile bottom tamping hammer 42 is detachably connected with the bottom of the hole-forming pile pipe 1.
Further, the horizontal impact hammer 47 includes a hammer head and a power rod, one end of the power rod is fixedly connected with the hammer head, and the other end is hinged with the end part of the connecting push rod 48.
Furthermore, the connecting end of the material conveying channel 8 and the inlet and outlet channel 7 is arranged at the side wall close to the pore-forming pile pipe 1.
Further, one end of the access passage 7, which is far away from the hole-forming pile tube 1, is provided with a limiting piece for preventing the horizontal impact hammer 47 from sliding out of the access passage 7.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110713752.2A CN113322931A (en) | 2021-06-25 | 2021-06-25 | Soft soil foundation consolidates compaction stake construction equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110713752.2A CN113322931A (en) | 2021-06-25 | 2021-06-25 | Soft soil foundation consolidates compaction stake construction equipment |
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| CN113322931A true CN113322931A (en) | 2021-08-31 |
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| CN202110713752.2A Pending CN113322931A (en) | 2021-06-25 | 2021-06-25 | Soft soil foundation consolidates compaction stake construction equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117328430A (en) * | 2023-09-25 | 2024-01-02 | 中建三局集团有限公司 | A high-performance soil compaction pile compaction equipment |
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| JPH062328A (en) * | 1992-06-16 | 1994-01-11 | Kokudo Sogo Kensetsu Kk | Land improvement method and device thereof |
| CN101922149A (en) * | 2010-08-20 | 2010-12-22 | 徐守田 | Construction method and construction equipment for one-step molded hole digging pile protecting wall |
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| CN103291222A (en) * | 2013-05-13 | 2013-09-11 | 山东鸿泰建设集团有限公司 | Reamer bit for building long-screw pile machine |
| CN109853565A (en) * | 2019-04-08 | 2019-06-07 | 王磊 | The construction method of hidden pipe pile |
| CN210216402U (en) * | 2019-07-04 | 2020-03-31 | 山东倍特力地基工程技术有限公司 | Drilling machine for extruding, spraying, reaming and pressure-grouting concrete pile |
| CN111794214A (en) * | 2020-07-13 | 2020-10-20 | 成都鑫筑博建材有限公司 | Self-extension construction method for punched pile |
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2021
- 2021-06-25 CN CN202110713752.2A patent/CN113322931A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062328A (en) * | 1992-06-16 | 1994-01-11 | Kokudo Sogo Kensetsu Kk | Land improvement method and device thereof |
| CN101922149A (en) * | 2010-08-20 | 2010-12-22 | 徐守田 | Construction method and construction equipment for one-step molded hole digging pile protecting wall |
| CN102864774A (en) * | 2012-10-10 | 2013-01-09 | 江苏南通六建建设集团有限公司 | Shrinkage treatment construction method for composite foundation- lime soil compaction piles |
| CN103291222A (en) * | 2013-05-13 | 2013-09-11 | 山东鸿泰建设集团有限公司 | Reamer bit for building long-screw pile machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117328430A (en) * | 2023-09-25 | 2024-01-02 | 中建三局集团有限公司 | A high-performance soil compaction pile compaction equipment |
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