CN205475211U - A mix soil extrusion solidification precast pile for soft base is handled - Google Patents

A mix soil extrusion solidification precast pile for soft base is handled Download PDF

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Publication number
CN205475211U
CN205475211U CN201521126845.1U CN201521126845U CN205475211U CN 205475211 U CN205475211 U CN 205475211U CN 201521126845 U CN201521126845 U CN 201521126845U CN 205475211 U CN205475211 U CN 205475211U
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pile
solidification
steel pipe
composite soil
seamless steel
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雷美清
刘观仕
戴也
孔令伟
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WUHAN ZHONGLI GEOTECHNICAL ENGINEERING Co Ltd
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WUHAN ZHONGLI GEOTECHNICAL ENGINEERING Co Ltd
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Abstract

The utility model discloses a mix soil extrusion solidification precast pile for soft base is handled, the foundation soil links to each other with drilling, and drilling links to each other with mixed soil extrusion solidification precast pile, and mixed soil extrusion solidification precast pile passes through the centre bore and cement mortar links to each other, and cement mortar and seamless steel pipe are continuous, and seamless steel pipe links to each other with the slip casting pipe. The step: A, vibration immersed tube stake machine pore -forming, B, place and mix soil extrusion solidification precast pile, C, place seamless steel pipe and extract the vibration immersed tube, D, slip casting: be connected seamless steel pipe with slip casting, to injection pressure cement mortar among the seamless steel pipe, make seamless steel pipe and prefabricated mixed earth pillar form the complete soil extrusion that mixes after the thick liquid solidification and solidify the precast pile, E, whole construction. The utility model discloses utilize the prefabricated mixed soil stake of abandonment building rubbish and ordinary clay, preparation convenient and fast, the quality is reliable, reduces the cost of transportation, and modularization one -tenth pile driving construction high efficiency is convenient, effectively improves the whole bearing capacity of ground.

Description

A kind of composite soil for treatment of soft foundation extrudes solidification prefabricated pile
Technical field
This utility model relates to soft foundation processing technology field, is more particularly to a kind of composite soil for treatment of soft foundation and extrudes Solidification prefabricated pile, also relates to a kind of composite soil for treatment of soft foundation and extrudes the construction method of solidification prefabricated pile.
Background technology
Soft base is the ground being made up of high-compressibility soil layers such as mud, muck soil, rinse fill, miscellaneous fills, the most public In the engineering constructions such as road, building, harbour, airport, all suffer from substantial amounts for the treatment of of soft foundation problem, need to solve its low bearing capacity, A serious difficult problem is deformed under load action.In the most conventional soft base processing method, the construction of piling prepressing method is simple, but the duration Long, need a large amount of earthwork;Pounding Method is simple, and speed is fast, but big to surrounding environment influence, processes the degree of depth limited;Mixing pile Method construction technology is more complicated, and treatment effect is reliable, but cost is higher, is only applicable to the weak soil that buried depth is shallower, current mixing pile method In, cement injection pile is to apply one of the most universal soft base processing method, but there is construction quality and be difficult to control to, process the degree of depth Limited deficiency such as grade.Develop more environmentally-friendly, quick, the construction method of low cost, will be the important development trend of soft base processing method.
Prefabricated pile method is conducive to control and the lifting construction efficiency of construction quality, and prefabricated pile is processed by existing patent application The technology of soft base has the most several: such as:
1, Du Bing etc. invention Calx, flyash prefabricated pile and pile-formation process and form compound foundation method (ZL: CN200810052414), including the prefabricated pile utilizing Calx and flyash to constitute, and the nothing that the water penetration of pile body peripheral protective is strong Yarn fabric, is primarily adapted for use in the silt clay of ultra-soft base.This invention is disadvantageous in that not utilize typically on the spot may be used The clay taken, very big to lime demand on the contrary, and the material that prefabricated pile body shortage cohesive force is strong, pile body is necessarily inclined fragility material Material, the length of prefabricated pile must be restricted, and the method that butt joint is effectively treated is not described, its practicality exists very Big query, very limited to the effect improving ground integrated carrying ability, the advantage that the most fundamentally plays prefabricated pile.
2, Zheng Gang etc. invention preset stiff core rammed concrete pile and construction method (ZL:CN200410093879), bag Including rammed concrete pile, arrange energetically core stake in pile body, the stake of plain concrete or reinforced concrete stiff-core stake is long to be more than or equal to 2/3rds of preset stiff core rammed concrete pile length.This construction method uses the method pile of rammed concrete in boring, Work efficiency is low, quality is not easily controlled is its notable weakness;Bearing capacity of single pile is improved a lot, but high intensity prefabricated pile with low by force When degree soil cement plays a role jointly, its bearing capacity can not give full play to, and the process degree of depth is by prefabricated pile length limitation, with powder Spray stake is compared cost and is not had cost and work efficiency advantage, it is difficult to be acceptable to the market.
3, grandson make before etc. invention extrusion molding prefabricated pile stiff-core cement soil Y shape stake (ZL:CN201420438426), this Bright first requirement construction cement mixing method, is then pressed into steel immersed tube, and form y-shaped cross-section in pipe encloses soil cement, in pipe Form Y shape stake after heart press-in prefabricated pile, finally extract steel immersed tube.This invention can improve the intensity of cement mixing method, but lacks Clearly, complicated construction technique, difficult quality guarantee, relatively costly, therefore practicality is general for point.
It addition, in patent currently with building waste pile Ground Treatment, ram such as the weight punching of Wang Guangming invention and expand Building waste compaction pile engineering method (ZL:CN93109708), the construction ramming expansion super-short shaped pile with building waste of Wang Jizhong invention Device (ZL:CN96207591), Wang Jizhong invention Heavey hammer tamping bottom of immersed tube method for building bored concrete pipe of refuse heap (ZL: CN1098758A), Duan Baofu invention a kind of based on construction refuse regenerated aggregate Novel pile pile making method (ZL: CN201510122938) etc., being all to use and will ram molded method after construction waste crushing in hole, its common maximum is weak Point is exactly that work efficiency is slow, and construction quality is difficult to control to, and pile-type can not control, and therefore market application foreground is greatly affected.
More than invent, compared with one of general cement mixing pile most widely used with at present the most weaker base processes, do not have Significantly cost advantage or environment-friendly advantage, construction technology is the most relatively complicated, work efficiency is poor, obtains very the most in the market Good popularization and application.
Summary of the invention
The purpose of this utility model is to there are provided a kind of composite soil for treatment of soft foundation to extrude solidification prefabricated pile, knot Structure is simple, can be with in-situ precast, and prefabricated speed is fast, can realize modular construction, low cost, can utilize the earthwork thrown aside in a large number and The material such as building waste, flyash, beneficially resource reutilization and environmental conservation.
Another purpose of the purpose of this utility model is to there are provided a kind of composite soil for treatment of soft foundation to extrude solid Changing the construction method of prefabricated pile, the method easy construction, work efficiency is higher, reliable in quality, makes a price reduction foundation treatment engineering cost.
To achieve these goals, this utility model employing techniques below measure:
A kind of composite soil for treatment of soft foundation extrudes solidification prefabricated pile, and it is pre-by first, second composite soil extruding solidification Stake processed, centre bore, seamless steel pipe, vibration sinking tube, earth's surface, boring, cement mortar, pile joint, foundation soil, Grouting Pipe, centre bore Composition, according to Fig. 1, is sequentially connected from bottom to top, it is characterised in that: foundation soil is connected with boring, boring and vibration sinking tube Being connected, vibration sinking tube is connected with first, second composite soil extruding solidification prefabricated pile respectively, the first composite soil extruding solidification prefabricated pile Extruding solidification prefabricated pile by pile joint and the second composite soil to be connected, the first composite soil stake is connected with earth's surface, first, second mixing Soil extruding solidification prefabricated pile is connected with cement mortar by centre bore, and cement mortar is connected with seamless steel pipe, seamless steel pipe and note Slurry pipe is connected.
Understanding as shown in Figure 1, Figure 2, this method construction is simple, after utilizing the vibration sinking tube construction drill of vibrator sunk pile machine, and will First, second composite soil extruding solidification prefabricated pile hangs in boring successively, and then seamless steel pipe is put into first, second mixing Soil extruding solidification prefabricated pile centre bore in, with vibrator sunk pile machine, vibration sinking tube is slowly extracted, then by Grouting Pipe with expose The seamless steel pipe on earth's surface connects, and injects cement mortar in seamless steel pipe, after cement mortar solidification, is integrally formed a kind of for soft The composite soil extruding solidification prefabricated pile that base processes.
A kind of composite soil for treatment of soft foundation extrudes the construction method of solidification prefabricated pile, the steps include:
A, vibrator sunk pile machine pore-forming:
Vibrator sunk pile machine (any one on market) can be used, from earth's surface, start boring, bore in foundation soil To projected depth (no more than 20m), it is formed with the boring that immersed tube temporarily supports;
B, placement composite soil extruding solidification prefabricated pile:
By the composite soil stake of composite soil stake draft machine (using ZL-01) in-situ precast, the composite soil of requirement is extruded Solidification prefabricated pile hangs in immersed tube, and composite soil stake stacks successively in immersed tube and forms the composite soil extruding consistent with projected depth Solidification prefabricated pile;
Described composite soil stake can use general clay and cement or Calx or flyash or building waste etc. to mix Material, clay accounts for mass ratio 85% or more than 85%, and remaining compound accounts for mass ratio and less than 15% or is equal to 15%, uses ZL-01 mixing Soil stake draft machine carries out static-pressure precast (general those of ordinary skill all can be prepared).
C, place seamless steel pipe and extract vibration sinking tube:
The seamless steel pipe consistent with pile body projected depth is put into the centre bore of composite soil extruding solidification prefabricated pile, seamless Steel pipe uses pipe collar to carry out segmentation connection, and then, immersed tube is extracted by operation vibrator sunk pile machine (any one on market) Earth's surface, composite soil extruding solidification prefabricated pile and seamless steel pipe are stayed in boring;
D, slip casting:
Seamless steel pipe and Grouting Pipe are tightened by iron wire and is connected, injection pressure cement mortar in seamless steel pipe, make water Cement mortar is filled in the position, play movement of the hole between seamless steel pipe and composite soil stake and composite soil stake comprehensively, grout curing After make seamless steel pipe and prefabricated composite soil post form complete composite soil extruding solidification prefabricated pile.
E, integral construction:
According to above-mentioned A, B, C, D step, by design quantity construction composite soil extruding solidification prefabricated pile, all of composite soil squeezes Cured prefabricated pile joins together, and improves the non-deformability under the bearing capacity of soft base and load action, and it is right i.e. to complete The process of soft base.
Working mechanism:
Use composite soil stake draft machine, clay, building waste, flyash etc. are made and is compacted uniform, higher the mixing of intensity Close soil extruding solidification prefabricated pile, advantageously reduce the production cost of stake, improve production efficiency, make full use of waste resource;Vibration After immersed tube is pressed into soft base by hidden pipe pile machine, immersed tube is that composite soil extruding solidification prefabricated pile is placed directly into foundation soil and provides properly Passage, also play ground compaction soil effect;Nylon net bag is used to hang composite soil extruding solidification prefabricated pile into immersed tube In, both it was possible to prevent the fracture etc. of composite soil extruding solidification prefabricated pile to damage, it is also possible to play the effect of stake week reinforcement;Successively The centre bore of the composite soil extruding solidification prefabricated pile stacked is inserted into seamless steel pipe and by its injection pressure cement mortar, permissible In composite soil extruding solidification prefabricated pile, play reinforced action, increase its shearing strength, simultaneously can also be by the water after solidification Cement mortar effectively connects the joint between composite soil extruding solidification prefabricated pile.
This utility model compared with prior art, has the advantages that:
1. the method that the obsolete materials such as general clay, building waste and flyash are compacted is prefabricated into composite soil stake is used, The engineering pile that compacting is uniform, reliable in quality, intensity are higher can be prepared as, moreover it is possible to achieve the recycling of waste resource;
2. use more piece composite soil extruding solidification prefabricated pile to connect into the construction method of overall pile-type, effectively reduce pre- The making of stake processed, the difficulty of operation transported, lift, it is achieved that modular construction, reduce construction cost;
3. seamless steel pipe and cement mortar is used to connect joint and the side of center reinforcement between composite soil extruding solidification prefabricated pile Method, solves the effective connectivity problem of joint of composite soil stake, also improves the integrated carrying ability of composite soil stake.
Highway quick exit passageway roadbed in Wuhan City's faces a large amount of soft base problem, and part way roadbed is from top to bottom Stratum be respectively lam (thickness 3.1-3.2m), silt clay (thickness 3.9-4.1m), lam (thickness 2.0-7.8m), Silt clay (thickness 0.0-1.1m), lam (thickness 0-4.9m), flour sand (stratum is not exposed).It is designed with being proposed A kind of composite soil for treatment of soft foundation extrudes solidification construction of prefabricated piles method.The stake footpath of composite soil extruding solidification prefabricated pile is 900mm, a length of 12.0-18.0m of stake, use on-the-spot spoir and 8% cement mix prefabricated form, vibrator sunk pile machine pore-forming, put Putting 3-6 joint composite soil extruding solidification prefabricated pile, the long 3m that is of stake, pile spacing is 2m.Compared with tradition powder-spray pile, use composite soil Extruding solidification construction of prefabricated piles method, can save the duration about 1/8, and cost-effective about 10-15% decreases the shadow along thread environment Ring.Monitoring result shows, after the sedimentation of subgrade construction phase and work, Predicted settlement is satisfied by code requirement.
Accompanying drawing explanation
Fig. 1 is the floor map that a kind of composite soil for treatment of soft foundation extrudes solidification prefabricated pile.
Fig. 2 is the generalized section that a kind of composite soil for treatment of soft foundation extrudes solidification prefabricated pile.
Fig. 3 is the left view of Fig. 2;
In figure: 1b the first composite soil extruding solidification prefabricated pile, 1a-the second composite soil extruding solidification prefabricated pile, in 2 Central hole, 3 seamless steel pipes, 4-vibration sinking tube, 5-earth's surface, 6-boring, 7-cement mortar, 8-pile joint, 9-foundation soil, 10-Grouting Pipe.
Detailed description of the invention
Embodiment 1:
Below in conjunction with Fig. 1, Fig. 2, this utility model is described in further detail:
A kind of composite soil for treatment of soft foundation extrudes solidification prefabricated pile, and it is by the first composite soil extruding solidification prefabricated pile 1b, the second composite soil extruding solidification prefabricated pile 1a, centre bore 2, seamless steel pipe 3, vibration sinking tube 4, earth's surface 5, boring 6, cement bonded sand Slurry 7, pile joint 8, foundation soil 9, Grouting Pipe 10, centre bore 2 form, as shown in Figure 1, from bottom to top, it is characterised in that: foundation soil 9 are connected with vibration sinking tube 4, and vibration sinking tube 46 is connected with boring, boring respectively 6 extrude with the first composite soil solidify prefabricated pile 1b, Second composite soil extruding solidification prefabricated pile 1a is connected, and the second composite soil extruding solidification prefabricated pile 1a is connected with earth's surface 5, the first mixing Soil extruding solidification prefabricated pile 1b is connected with the second composite soil extruding solidification prefabricated pile 1a by pile joint 8, the first composite soil extruding Solidification prefabricated pile 1b, the second composite soil extruding solidification prefabricated pile 1a are connected with cement mortar 7 by centre bore 2, cement mortar 7 He Seamless steel pipe 3 is connected, and seamless steel pipe 3 is connected with Grouting Pipe 10.
-3 understanding as shown in Figure 1, Figure 2, this method construction is simple, utilizes vibration sinking tube 4 construction drill 6 of vibrator sunk pile machine After, the first composite soil extruding solidification prefabricated pile 1b and the second composite soil extruding solidification prefabricated pile 1a is hung in boring 6 successively, Then seamless steel pipe 3 is put in the first composite soil extruding solidification prefabricated pile 1b and the second composite soil extruding solidification prefabricated pile 1a In central hole 2, with vibrator sunk pile machine, vibration sinking tube 4 is slowly extracted, then by Grouting Pipe 10 and the seamless steel pipe 3 exposing earth's surface 5 Connect, in seamless steel pipe 3, inject cement mortar 7, after cement mortar 7 solidification, a kind of mixing for treatment of soft foundation is integrally formed Close soil extruding solidification prefabricated pile.
A kind of composite soil for treatment of soft foundation extrudes the construction method of solidification prefabricated pile, the steps include:
1. pore-forming:
Use vibrator sunk pile machine, from the beginning of earth's surface 5, in foundation soil 9, utilize vibration sinking tube 4, construct from top to bottom Boring 6 to projected depth (generally 20m), vibration sinking tube 4 temporarily stays the support in foundation soil 9 as boring 6, for composite soil The installation successively of extruding solidification prefabricated pile 1 provides precondition.
2. hang composite soil extruding solidification prefabricated pile:
Use vibrator sunk pile machine, by prefabricated to the first composite soil extruding solidification prefabricated pile 1b and the extruding solidification of the second composite soil Stake 1a hangs in temporary retention vibration sinking tube 4 in boring 6 successively, the first composite soil extruding solidification prefabricated pile 1b and second Composite soil extruding solidification prefabricated pile 1a stacks in vibration sinking tube 4 successively, forms the composite soil extruding consistent with projected depth solid Changing prefabricated pile body, vibration sinking tube 4 is the first composite soil extruding solidification prefabricated pile 1b and the second composite soil extruding solidification prefabricated pile 1a Put into smoothly and played pivotal role, the first composite soil extruding solidification prefabricated pile 1b and the second composite soil extruding solidification prefabricated pile Hanging in of 1a is that a kind of composite soil for treatment of soft foundation extrudes the important ring solidified during prefabricated pile is integrally formed.
3. place seamless steel pipe and extract vibration sinking tube:
By the centre bore 2 on the first composite soil extruding solidification prefabricated pile 1b, the second composite soil extruding solidification prefabricated pile 1a, Place the relatively first composite soil extruding solidification prefabricated pile 1b, the second composite soil extrudes the seamless steel pipe 3 that solidification prefabricated pile 1a slightly grows, nothing Seam steel pipe 3 uses pipe collar to carry out segmentation connection, is then slowly extracted by vibration sinking tube 4 by operation vibrator sunk pile machine, mixing Soil extruding solidification prefabricated pile and seamless steel pipe are stayed in boring, get ready for follow-up slip casting and pile;
4. slip casting:
By the Grouting Pipe 10 injection pressure cement mortar 7 being connected with seamless steel pipe 3, make cement mortar 7 be filled in comprehensively Seamless steel pipe 3 and the first composite soil extruding solidification prefabricated pile 1b, second composite soil extruding solidification prefabricated pile 1a between hole and The position of pile joint 8, the cement mortar 7 after solidification jointly serves with seamless steel pipe 3 and is connected the first composite soil extruding solidification in advance Stake 1b processed, the effect of the second composite soil extruding solidification prefabricated pile 1a, also increase the anti-of composite soil extruding solidification prefabricated pile 1 simultaneously Cut intensity and comprcssive strength.
5. integral construction:
According to above-mentioned 1.-4. step, the first composite soil extruding solidification prefabricated pile 1b, the second composite soil of detail design quantity Extruding solidification prefabricated pile 1a, i.e. completes effectively to process the overall of soft base, reaches to improve the purpose of foundation bearing capacity.
Described composite soil stake uses general clay and cement or Calx or flyash or building waste compound, viscous Soil accounting 85%, remaining compound accounting 15%, use ZL-01 composite soil stake draft machine to carry out static-pressure precast.

Claims (1)

1., for a composite soil extruding solidification prefabricated pile for treatment of soft foundation, it includes the first composite soil extruding solidification prefabricated pile (1b), second composite soil extruding solidification prefabricated pile (1a), seamless steel pipe (3), boring (6), cement mortar (7), pile joint (8), Foundation soil (9), Grouting Pipe (10), centre bore (2), it is characterised in that: foundation soil (9) is connected with boring (6), and boring (6) is respectively Being connected with the first composite soil extruding solidification prefabricated pile (1b), the second composite soil extruding solidification prefabricated pile (1a), the first composite soil squeezes Cured prefabricated pile (1b) is connected with the second composite soil extruding solidification prefabricated pile (1a) by pile joint (8), and the first composite soil squeezes Cured prefabricated pile (1b), the second composite soil extruding solidification prefabricated pile (1a) are connected with cement mortar (7) by centre bore (2), Cement mortar (7) is connected with seamless steel pipe (3), and seamless steel pipe (3) is connected with Grouting Pipe (10).
CN201521126845.1U 2015-12-29 2015-12-29 A mix soil extrusion solidification precast pile for soft base is handled Active CN205475211U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105421446A (en) * 2015-12-29 2016-03-23 武汉中力岩土工程有限公司 Mixed soil extruded and cured precast pile for soft foundation treatment as well as construction method
CN111153317A (en) * 2019-12-27 2020-05-15 中交武汉港湾工程设计研究院有限公司 Hoisting device for hoisting center hollow hole precast pile and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105421446A (en) * 2015-12-29 2016-03-23 武汉中力岩土工程有限公司 Mixed soil extruded and cured precast pile for soft foundation treatment as well as construction method
CN111153317A (en) * 2019-12-27 2020-05-15 中交武汉港湾工程设计研究院有限公司 Hoisting device for hoisting center hollow hole precast pile and construction method thereof

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