CN107460872A - A kind of artificial tubes mix structure The End-bearing Piles Foundation and construction technology - Google Patents
A kind of artificial tubes mix structure The End-bearing Piles Foundation and construction technology Download PDFInfo
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- CN107460872A CN107460872A CN201710335178.5A CN201710335178A CN107460872A CN 107460872 A CN107460872 A CN 107460872A CN 201710335178 A CN201710335178 A CN 201710335178A CN 107460872 A CN107460872 A CN 107460872A
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- cement concrete
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- pressure body
- pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
Abstract
The invention discloses a kind of artificial tubes to mix structure The End-bearing Piles Foundation and construction technology, belong to building The End-bearing Piles Foundation field, the technical scheme of use is, a kind of artificial tubes mix structure The End-bearing Piles Foundation, including foundation soil, also include the closed injection pressure body in lower end, injection pressure body tube wall lower end sets Cement Concrete extrusion mouth, by being formed to injection pressure body internal pressure cementing concrete there is lower end Cement Concrete end stand and upper tube to mix the pile foundation of pile.Beneficial effect is：Present invention firstly provides artificially manufactured in the case where not excavating, by construction technology pile foundation carrying end stand, and carrying end stand on be integrally formed pipe mix pile so as to which pile foundation be made, realizing can pile on all foundation soils；The bearing capacity of shaping pile foundation is big, and stability is good；Work progress drilling is small and shallow, and being unearthed, amount is small, and labor and material saving, cost are low, and environmental protection, noise is small, does not produce rubbish, especially suitable for city newly building bridge pile foundation and building pile foundation, is also applied for the pile foundation of highway bridge and railroad bridge.
Description
Technical field
The present invention relates to building The End-bearing Piles Foundation field, and in particular to a kind of artificial tubes mix structure The End-bearing Piles Foundation and construction
Technique.
Background technology
Highway, railway, bridge, urban interchange and building basis, the processing such as selection of pile-type, construction method to ground
Deng the directly bearing capacity of decision pile body, construction complexity and cost.Friction pile and end are divided into according to the Force principle of pile foundation
Stake is held, end-bearing pile is that foundation pile is seated on lithosphere so as to carry structure；Friction pile is the surface and foundation soil using foundation pile
Frictional force carry structure.Friction pile can only be used in foundation soil at present, it is impossible to end-bearing pile, and in order to ensure pile foundation
To the bearing capacity of upper building, requirement of the friction pile to pile body length and diameter is very big, causes that pile is difficult, volume is big, deadweight
Greatly, take a lot of work material, considerably increase difficulty of construction and cost.On the other hand, urban interchange, underground pipe network are built in city
In length and breadth, some also has subway, because pile causes building, the mobile underground pipe network of removing of having in construction, this is not only easily caused
Local traffic is paralysed, and also because removal, moving influence resident living, cost is very huge, also results in huge waste.Above mentioned problem
The serious process for restricting and having dragged slowly current urban architecture construction, it is the technology of difficult point during urban architecture is built and urgent need to resolve
Problem.
The content of the invention
To solve the technical problem that friction pile volume is big, materials are big, difficulty of construction is big in the bridge construction pile of city, the present invention carries
For a kind of artificial The End-bearing Piles Foundation and construction technology, by the portion that Cement Concrete extrusion mouth is opened up in the interruption setting of injection pressure body tube wall
Section, pressure injection Cement Concrete mix the mixed structure The End-bearing Piles Foundation of artificial tubes of pile so as to be formed with lower end Cement Concrete end stand and upper tube
Technical scheme, realize artificial end stand and be integrally formed with managing mixed structure pile, load-carrying properties greatly improve, and stability is good, together
When time and labour saving equal more than 90%.
The technical solution adopted by the present invention is a kind of mixed structure The End-bearing Piles Foundation of artificial tubes, including foundation soil, in addition under
Hold closed injection pressure body, injection pressure body tube wall lower end sets Cement Concrete extrusion mouth, by injection pressure body internal pressure cementing concrete
Form the pile foundation that pile is mixed with lower end Cement Concrete end stand and upper tube.
Preferably, the injection pressure body is in Cement Concrete extrusion mouth outer wrap elastic packing pipe.
Preferably, the injection pressure body is steel pipe, FRP pipes or plastic tube.
Preferably, the Cement Concrete extrusion mouth circumferentially opens up more than a circle along tube wall.
The present invention also provides the construction technology that a kind of artificial tubes mix structure The End-bearing Piles Foundation, comprises the following steps：
1. the following data of The End-bearing Piles Foundation are designed according to project under construction：Floor space, height and the pipe of lower end Cement Concrete end stand mix
The height of pile, diameter；
2. according to step（1）Design data make injection pressure body, shut the bottom Tou Kou of injection pressure body, and in injection pressure body
Tube wall lower end open up Cement Concrete extrusion mouth, opening up Cement Concrete extrusion mouth section be set with elastic packing pipe；
3. in project designing stake position preexisting hole, injection pressure body is put into preexisting hole；
4. tamp the gap between injection pressure body and foundation soil with fine sand；
5. by injection pressure body and Cement Concrete pump airtight connection, Cement Concrete pump is started, is extremely designed to injection pressure body internal pressure cementing concrete
Fang Liang, that is, the artificial tubes for completing to mix pile with lower end Cement Concrete end stand and upper tube mix structure The End-bearing Piles Foundation.
Preferably, 2. the step opens up the section of Cement Concrete extrusion mouth at least provided with 1 section.
Preferably, 5. the mode of injection pressure body and Cement Concrete pump airtight connection is that will be noted by reduction nipple to the step
Pressure pipe body upper port is with Cement Concrete pump airtight connection or by the tube expander goed deep into injection pressure body and the height being connected with tube expander
Pressure flexible pipe is connected with Cement Concrete pump.
It is furthermore preferred that the method for the pressure injection Cement Concrete is to suitable under the tube expander that high-pressure hose and its termination connect is stretched
To the upper end of the Cement Concrete extrusion mouth section of bottom in injection pressure body, strut tube expander, start Cement Concrete pump to reach design
Side's amount termination of pumping forms Cement Concrete end stand；Tube expander is tightened up, the upper end of supreme Cement Concrete extrusion mouth section is pulled up, struts
Tube expander, Cement Concrete pump is started to the amount termination of pumping of design side is reached and forms Cement Concrete disk, repeats aforesaid operations upwards successively to being opened
If the section of Cement Concrete extrusion mouth forms Cement Concrete disk respectively, form more coil pipes and mix structure The End-bearing Piles Foundation.
Preferably, before 5. the step starts Cement Concrete pump, it is mechanically fixed the upper port of injection pressure body.
Preferably, the section for opening up Cement Concrete extrusion mouth is highly respectively 50cm -300cm.
In above-mentioned technical proposal, the structure that a kind of artificial tubes mix structure The End-bearing Piles Foundation includes foundation soil, lower end Cement Concrete
The pipe on end stand and top mixes pile, and it is that injection pressure body and the Cement Concrete wherein filled are formed to manage mixed pile；Under injection pressure body tube wall
End is further opened with Cement Concrete extrusion mouth, and Cement Concrete extrusion mouth is traditionally arranged to be along injection pressure body and is circumferentially uniformly arranged, pressure injection cement
After concrete, Cement Concrete is full of the lower end of injection pressure body, and is flowed out from Cement Concrete extrusion mouth to body of bulldozing around tube wall, soil body retraction,
Artificial Cement Concrete end stand is formed, the shape of Cement Concrete end stand, can be arbitrary shape, such as irregular shape or circle
Or it is square etc., the bottom surface of Cement Concrete end stand presses to following soil property, and soil property below has reaction force to its bottom surface, that is, has
There is carrying effect, the lower end for managing mixed pile is seated in Cement Concrete end stand, has intermal force, forms The End-bearing Piles Foundation.Pipe is mixed
Structure is high by the bending tensile strength of tube wall, and the constraint of pipe greatly improves concrete strength, while the rigid resistance to compression of Cement Concrete
Intensity is high, effectively reduces the buckling strength of pipe in the horizontal direction, high concentration bending tensile strength, exists so as to substantially increase pipe
Bearing capacity on vertical direction, the two forms mixing integrative-structure, and bearing capacity greatly enhances, significantly larger than the pile foundation of Cement Concrete
Plinth, pipe performance and the sum of the two, manage the advantages of mixing both structure compositions, mutually fusion enhancing, the Cement Concrete of formation
End stand 1（And Cement Concrete disk）The mixed structure pile power transmission of support bearing, pipe to ground and has the curved function of shearing resistance, finally causes pile
Diameter is very thin, and the mixed structure The End-bearing Piles Foundation of this artificial tubes, which has broken current end-bearing pile, need to the geology bar of Pressed rock to construction ground
Part limits, and realizes on the basis of soil property, without under the geological conditions of rock foundation, passes through the Cement Concrete of artificial similar rock
End stand, form the end stand basis of end-bearing pile.
Artificial tubes mix the construction technology of structure The End-bearing Piles Foundation, and specific understanding is as follows：
1. the soil property classification of stake position according to where project under construction（The pressure-proof elasticity modulus of soil）And required stake bearing capacity and examine
Consider construction, it is determined that height, diameter, the floor space of Cement Concrete end stand and the thickness of the mixed structure The End-bearing Piles Foundation of pipe, and then calculate
Side's amount of Cement Concrete is needed during extrusion forming Cement Concrete end stand；
2. making injection pressure body according to the design data of step 1., the bottom Tou Kou of injection pressure body is shut, and in injection pressure body
Tube wall lower end open up Cement Concrete extrusion mouth, open up the thickness phase of the height and Cement Concrete end stand of the section of Cement Concrete extrusion mouth
Together, elastic packing pipe is set with the section for opening up Cement Concrete extrusion mouth, so that the Cement Concrete of Cement Concrete extrusion mouth outflow is to tube wall
Surrounding soil-shifting body, soil body retraction in the form of face, form artificial Cement Concrete end stand；
3. in project designing stake position drills preexisting hole, rotary drilling rig can be used to drill, drilling to completion, general control
Preexisting hole diameter is more than injection pressure 2-3cm of pipe diameter, and injection pressure body is put into preexisting hole；
It is to prevent Cement Concrete in extrusion process along seam 4. tamping the gap between injection pressure body and foundation soil with fine sand
Squeezed in gap, the crowded strength in consumption Cement Concrete side, impact the shaping of lower end Cement Concrete end stand；
5. by injection pressure body and Cement Concrete pump airtight connection, connected in operation using reduction nipple, the thick head of reduction nipple
End is connected with injection pressure body, and thin head end is connected with Cement Concrete pump, starts Cement Concrete pump, to injection pressure body internal pressure cementing concrete to setting
Meter side is measured, that is, is completed artificial tubes and mixed structure The End-bearing Piles Foundation, and it is Cement Concrete end stand to manage mixed structure The End-bearing Piles Foundation lower end, upper tube
Mixed pile is seated in Cement Concrete end stand.
The beneficial effects of the invention are as follows：（1）Present invention firstly provides artificially made in the case of not excavating, by construction technology
Pile foundation carrying end stand is made, and is integrally formed pipe in carrying end stand and mixes pile so as to which pile foundation be made, has been broken to project
The limitation of geological conditions requirement, realizing can pile on all foundation soils；（2）Construction and the pile foundation that is molded, be according to
The locus obtained by the pressure soil compaction of Cement Concrete, the soil around end stand including the soil under end stand, are obtained during being somebody's turn to do
Closely knit, native pressure-proof elasticity modulus greatly improve, and bearing capacity increase, the stability of bearing capacity and stake have been effectively ensured；（3）This
Soil matrix need not be excavated in case technology, drilling is small and shallow, and amount of being unearthed is small, than existing enlarged footing foundation pile from technique（Excavate soil
General below 7m is deep, pours into a mould a big cushion cap）Saving of labor and expenses of labour are more than 90%；The The End-bearing Piles Foundation being molded " rubs than existing
Wipe stake " more than 80% is reduced in same bearer power time material saving more than 80%, recruitment and equipment cost, cost is low, efficient, quality
It is more stable；Work progress environmental protection, noise is small, does not produce rubbish, especially suitable for city newly building bridge pile foundation and high buildings and large mansions
Pile foundation.
Brief description of the drawings
Fig. 1 is the structural representation that the middle pipe of embodiment 1 mixes structure The End-bearing Piles Foundation and its Construction State；
Fig. 2 is the injection pressure pipe structure schematic diagram that the middle pipe of embodiment 1 mixes structure The End-bearing Piles Foundation；
Fig. 3 is the structural representation that more coil pipes mix structure The End-bearing Piles Foundation injection pressure body in embodiment 2；
In figure, 1, Cement Concrete end stand, 2, the mixed pile of pipe, 2-1, injection pressure body, 2-1-1, Cement Concrete extrusion mouth, 2-1-2, elasticity
Seal pipe, 3, foundation soil, 4, gap, 5, tube expander, 6, pressure thick stick, 7, high-pressure hose.
Embodiment
Following examples illustrate construction technology and the institute that artificial tubes provided by the present invention mix structure The End-bearing Piles Foundation
The structure of the The End-bearing Piles Foundation of shaping.
Embodiment 1
The artificial single coil that the present embodiment construction mixes pile 2 with lower end Cement Concrete end stand 1 and upper tube mixes structure end-bearing pile base
Plinth, comprise the following steps：
1. first reconnoitre, detect the underground pipe network coordinate bench mark on project under construction ground and the coordinate bench mark of other underground structures,
Clear position in selection project ground is defined as lower end end stand and the pile position of pile foundation, that is, determines coordinate and absolute altitude；So
Afterwards according to the soil property classification of project under construction place stake position（The pressure-proof elasticity modulus of soil）And the bearing capacity of required stake and consideration are applied
Work, it is determined that the height of the mixed structure The End-bearing Piles Foundation of pipe, diameter, including the floor space of Cement Concrete end stand 1, thickness and it is seated in cement
The side of Cement Concrete is needed when managing the height for mixing pile 2, diameter in concrete end stand 1, and then calculating extrusion forming Cement Concrete end stand
Side's amount of Cement Concrete needed for amount, whole pile foundation.
2. according to step, 1. the diameter of the mixed pile 2 of the absolute altitude of middle determination, pipe and the thickness of Cement Concrete end stand determine injection pressure pipe
Body 2-1 length, diameter and the section for opening up Cement Concrete extrusion mouth 2-1-1, in factory according to designing and producing injection pressure body 2-1,
Typically, injection pressure body 2-1 preferably uses pipe, and circular tube shaped injection pressure body 2-1 is easy to connect, and overpressure is uniform, to pipe external pressure
Power is impartial, is easy to pile radius around injection pressure body 2-1 consistent, and outer wall of the pipe as the mixed structure of pipe, and its mechanical property is most
Good, the constraint of pipe greatly improves cement concrete strength.More preferably FRP is managed, and the pipe bending tensile strength is high, the curved power of water resistant straight snips
Height, and acid-alkali-corrosive-resisting, the mechanical property of stake can be kept for a long time.Injection pressure body 2-1 diameters general control is in 30-60cm, in pipe
Bottom 0.5-3m in the range of, open up out Cement Concrete extrusion 2-1-1 several, these Cement Concretes extrusion 2-1-1 edges
Even tube wall is distributed, and the section for opening up Cement Concrete extrusion 2-1-1 highly amounts to 50cm -300cm, is opening up Cement Concrete extruding
Mouth 2-1-1 section is tightened with elastic packing pipe 2-1-2 sealing suits, shuts injection pressure body 2-1 bottom Tou Kou, such injection pressure
Body 2-1 is formed the container of a sealing, using liquid, fluid in sealing container the consistent impartial principle of pressure, borrow
Help Cement Concrete pump to Cement Concrete fluid press, Cement Concrete by Cement Concrete extrusion mouth 2-1-1 bleed pipes outside, push elastic packing pipe to
2-1-2, elastic packing pipe 2-1-2 stretch long one Cement Concrete bag of great achievement with the characteristic advantage of itself again, by the pressure of Cement Concrete
Power pushes away foundation soil compression to external pressure, and foundation soil is constantly retreated by compression, is the vacating space of Cement Concrete end stand 1, so as to be formed
Lower end Cement Concrete end stand 1.
3. in stake position preexisting hole needed for project, by step 2. in manufactured injection pressure body 2-1 be put into preexisting hole, this hair
The stake of bright designed construction can typically meet bearing requirements within 30m, even 20m, and the preexisting hole diameter needed is small, therefore
It is general to be dug using dry, it is unlikely to collapse hole, work progress everywhere, cleans very much there is no mud, preferably rotary digging drilled as holes, preexisting hole
The diameter in hole is more than into pile pipe 2-3cm, drilling to completion.
4. tamping the gap 4 between injection pressure body 2-1 and foundation soil 3 with fine sand, prevent Cement Concrete from injection pressure body 2-1
Run among gap between foundation soil, and increased resistance.
5. by injection pressure body 2-1 upper ports by reduction nipple and Cement Concrete pump airtight connection, among pressure thick stick 6
Push down injection pressure body 2-1 upper ports, the both sides of pressure thick stick 6 are fastened with heavy machine machinery, are prevented in pumping concrete, Cement Concrete from
The Cement Concrete extrusion mouth 2-1-1 of bottom outside pipe outwardly against during the soil body, due to the reaction force of the soil body, making injection pressure body 2- in pipe
1 floats；It is ground installation to press thick stick 6.Cement Concrete pump is started, measures, that is, completes to injection pressure body 2-1 internal pressure cementings concrete to design side
Lower end Cement Concrete end stand 1 and upper tube mix pile 2, and two parts are integrated, and Cement Concrete end stand 1 plays a supportive role, and upper tube mixes stake
Post 2 plays intermal force, and the artificial tubes, which are mixed in structure The End-bearing Piles Foundation, does not have reinforcing bar, is also one of maximum difference with existing stake.
To examine the performance of this The End-bearing Piles Foundation, we are provided with height same with above-mentioned injection pressure body 2-1, the pipe of diameter
Body, and Cement Concrete extrusion mouth is opened up in even tube wall, injection pressure is made to ratio with the Cement Concrete of sample prescription amount, compares its bearing capacity
Can, as a result find, the bearing capacity of friction pile is only that the pipe in the embodiment of the present invention 1 mixes the carrying of structure The End-bearing Piles Foundation in comparative example
The 27% of power.
Embodiment 2
The present embodiment construction is artificial more with the mixed pile 2 of the pipe of lower end Cement Concrete end stand 1 and top with multiple Cement Concrete disks
Coil pipe mixes structure The End-bearing Piles Foundation, to adapt to requirement of the large bridge to load on pile foundation, comprises the following steps：
1. the soil property classification of stake position according to where project under construction（The pressure-proof elasticity modulus of soil）And required stake bearing capacity and examine
Consider construction, it is determined that the height of the mixed structure The End-bearing Piles Foundation of pipe, diameter, including the floor space of Cement Concrete end stand 1, thickness, top are each
The height of the mixed pile 2 of height, number and thickness and pipe of Cement Concrete disk, diameter, and then calculate extrusion forming Cement Concrete end stand
When need side's amount, the side's amount of Cement Concrete needed for whole pile foundation of Cement Concrete.
2. according to step 1. in data according to injection pressure body 2-1 is designed and produced, shut injection pressure body 2-1 bottom head
Mouthful, and injection pressure body 2-1 tube wall respectively design disk position height and section position open up Cement Concrete extrusion mouth 2-1-1, opening up
Cement Concrete extrusion mouth 2-1-1 section suit elastic packing pipe 2-1-2；
3. in stake position preexisting hole, injection pressure body 2-1 is put into preexisting hole；
4. tamp the gap between injection pressure body 2-1 and foundation soil 3 with fine sand；
5. by injection pressure body 2-1 and Cement Concrete pump airtight connection, because to construct polydisc stake, therefore high-pressure hose 7 is used to go deep into extremely
In injection pressure body 2-1, and tube expander 5 is installed in the termination of high-pressure hose 7, Down-Up successively into disk during operation, into a disk to
A high-pressure hose 7 and tube expander 5 are above carried, to the top of perforate section.It is convenient that high-pressure hose 7 and tube expander 5 coordinate, and is being moved through
Pile successively under journey air-tight state, installs high-pressure hose 7 and tube expander 5 in Cement Concrete pump delivery outlet, tube expander 5 is stretched into successively
In injection pressure body 2-1 and the upper end of the Cement Concrete extrusion mouth 2-1-1 sections of bottom is reached, tube expander 5 is strutted, starts Cement Concrete
Pump forms Cement Concrete end stand 1 to the amount termination of pumping of design side is reached；Tube expander 5 is tightened up, is pulled up a supreme Cement Concrete extrusion mouth
The upper end of 2-1-1 sections, strut tube expander 5, start Cement Concrete pump to reach design side amount termination of pumping formed Cement Concrete disk, successively to
On repeat aforesaid operations to opened up Cement Concrete extrusion mouth 2-1-1 section and form Cement Concrete disk respectively.
More coil pipes that the present embodiment is molded mix structure The End-bearing Piles Foundation, and its bearing capacity greatly enhances, and can significantly subtract
Few pile amount, reduces material usage, improves speed of application.By being found after setting contrast experiment, in foundation soil
Pile foundation, when reaching same bearing capacity, stake is significantly reduced compared to existing friction pile and the pile foundation of other forms, the present invention
The deadweight on basis, material more than 3/4ths is saved, reduces investment outlay more than 4/5ths, greatlys save man-hour and cost.
Certainly, in work progress, the elongation of elastic packing pipe is limited, can be quick-fried after certain proportion is elongated to
It is broken, but in explosion, distance of the Cement Concrete fluid ragged edge away from injection pressure body 2-1 outer walls typically has been above 30-50cm, now
Cement Concrete fluid inherently forms a Fluid Sealing bag again, and Cement Concrete is constantly sent to what is formed by Cement Concrete pump
This Fluid Sealing bag center, is advanced further towards foundation soil, more long bigger, until reaching design side's amount, general Cement Concrete end stand 1
Or Cement Concrete disk diameter is up to 6m, this technical scheme and principle, when solving the pressure injection Cement Concrete fluid into foundation soil, cement
The problem of concrete isolation.
Summary, pipe provided by the invention mix that structure The End-bearing Piles Foundation can be artificially in foundation soil, vertical
What position forms a special-shaped Cement Concrete end stand 1（And Cement Concrete disk）, and with the water in injection pressure body 2-1 and injection pressure body 2-1
Mud concrete is integrally formed, and high high with the rigid compression strength of pipe mixing cement concrete by the bending tensile strength of tube wall, the constraint of pipe makes to mix
Coagulate native intensity to greatly improve, the advantages of combining the two, form Cement Concrete end stand 1（And Cement Concrete disk）The mixed knot of support bearing, pipe
The power transmission of structure pile is to ground and has the structure of the curved function of shearing resistance, finally make it that pile diameter is very thin, and bearing capacity greatly enhances,
The present invention significantly reduces the deadweight of pile foundation, saves material more than 3/4ths, reduces investment outlay more than 4/5ths, significantly
, the present invention solves the geological condition change in work progress, such as the unpredictalbe situation of drifting sand layer, gravel layer and applies
Work broken pile etc. brings the big technical problem of difficulty of construction, can ensure that the disposable pile foundation for producing high quality, not broken pile, pile
Do not sink, yield rate 100%, stability 100%.
Claims (10)
1. a kind of artificial tubes mix structure The End-bearing Piles Foundation, including foundation soil（3）, it is characterised in that also including the closed note in lower end
Pressure pipe body（2-1）, injection pressure body（2-1）Tube wall lower end sets Cement Concrete extrusion mouth（2-1-1）, by injection pressure body（2-1）
Internal pressure cementing concrete, which is formed, has lower end Cement Concrete end stand（1）Pile is mixed with upper tube（2）Pile foundation.
2. artificial tubes mix structure The End-bearing Piles Foundation according to claim 1, it is characterised in that the injection pressure body（2-1）
Cement Concrete extrusion mouth（2-1-1）Outer wrap elastic packing pipe（2-1-2）.
3. artificial tubes mix structure The End-bearing Piles Foundation according to claim 1, it is characterised in that the injection pressure body（2-1）For
Steel pipe, FRP pipes or plastic tube.
4. artificial tubes mix structure The End-bearing Piles Foundation according to claim 1, it is characterised in that the Cement Concrete extrusion mouth（2-
1-1）Circumferentially opened up more than a circle along tube wall.
5. a kind of artificial tubes mix the construction technology of structure The End-bearing Piles Foundation, it is characterised in that comprise the following steps：
1. the following data of The End-bearing Piles Foundation are designed according to project under construction：Lower end Cement Concrete end stand（1）Floor space, height and
The mixed pile of pipe（2）Height, diameter；
2. according to step（1）Design data make injection pressure body（2-1）, shut injection pressure body（2-1）Bottom Tou Kou, and
In injection pressure body（2-1）Tube wall lower end open up Cement Concrete extrusion mouth（2-1-1）, opening up Cement Concrete extrusion mouth（2-1-1）'s
Section is set with elastic packing pipe（2-1-2）；
3. stake position preexisting hole in project is designed, by injection pressure body（2-1）It is put into preexisting hole；
4. tamp injection pressure body with fine sand（2-1）With foundation soil（3）Between gap（4）；
5. by injection pressure body（2-1）With Cement Concrete pump airtight connection, Cement Concrete pump is started, to injection pressure body（2-1）Internal pressure water filling
Mud concrete to design side is measured, that is, completes have lower end Cement Concrete end stand（1）Pile is mixed with upper tube（2）Artificial tubes mix structure end hold
Pile foundation.
6. construction technology according to claim 5, it is characterised in that the 2. step opens up Cement Concrete extrusion mouth（2-1-
1）Section at least provided with 1 section.
7. the construction technology according to claim 5 or 6, it is characterised in that the step 5. injection pressure body（2-1）With cement
The mode of concrete pump airtight connection is by injection pressure body by reduction nipple（2-1）Upper port and Cement Concrete pump airtight connection are borrowed
Help and go deep into injection pressure body（2-1）Interior tube expander（5）And and tube expander（5）The high-pressure hose of connection（7）It is connected with Cement Concrete pump.
8. construction technology according to claim 7, it is characterised in that the method for the pressure injection Cement Concrete is by high-pressure hose
（7）And its tube expander of termination connection（5）Under stretching injection pressure body is arrived to suitable（2-1）The Cement Concrete extrusion mouth of interior bottom（2-1-
1）The upper end of section, struts tube expander（5）, Cement Concrete pump, which is started, to the amount termination of pumping of design side is reached forms Cement Concrete end stand（1）；Receive
Tight tube expander（5）, it is pulled up a supreme Cement Concrete extrusion mouth（2-1-1）The upper end of section, struts tube expander（5）, start
Cement Concrete pump forms Cement Concrete disk to the amount termination of pumping of design side is reached, and repeats aforesaid operations to opened up Cement Concrete upwards successively and extrudes
Mouthful（2-1-1）Section form Cement Concrete disk respectively, form more coil pipes and mix structure The End-bearing Piles Foundation.
9. construction technology according to claim 5, it is characterised in that 5. the step starts Cement Concrete pump before, machinery is solid
Determine injection pressure body（2-1）Upper port.
10. construction technology according to claim 5, it is characterised in that described to open up Cement Concrete extrusion mouth（2-1-1）Portion
Duan Gaodu is respectively 50cm -300cm.
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| CN201710335178.5A CN107460872B (en) | 2017-05-12 | 2017-05-12 | Artificial pipe-concrete structure end-bearing pile foundation and construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335178.5A CN107460872B (en) | 2017-05-12 | 2017-05-12 | Artificial pipe-concrete structure end-bearing pile foundation and construction process |
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| CN107460872B CN107460872B (en) | 2020-07-28 |
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| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| CN101058979A (en) * | 2007-05-24 | 2007-10-24 | 何新东 | Construction method for pulling-resistant and pressure-resistant slip casting pipe pile |
| CN102677660A (en) * | 2012-04-28 | 2012-09-19 | 邢台路桥建设总公司 | Quick pile-forming method and method for quickly building urban flyover by quick pile-forming method |
| CN102677677A (en) * | 2012-04-28 | 2012-09-19 | 邢台路桥建设总公司 | Composite injection pipe for injection-molded soil and stone composite pile foundation |
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2017
- 2017-05-12 CN CN201710335178.5A patent/CN107460872B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| CN101058979A (en) * | 2007-05-24 | 2007-10-24 | 何新东 | Construction method for pulling-resistant and pressure-resistant slip casting pipe pile |
| CN102677660A (en) * | 2012-04-28 | 2012-09-19 | 邢台路桥建设总公司 | Quick pile-forming method and method for quickly building urban flyover by quick pile-forming method |
| CN102677677A (en) * | 2012-04-28 | 2012-09-19 | 邢台路桥建设总公司 | Composite injection pipe for injection-molded soil and stone composite pile foundation |
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