CN107190763A - By many paxilla Shu Hecheng class large diameter pile and its construction method - Google Patents
By many paxilla Shu Hecheng class large diameter pile and its construction method Download PDFInfo
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- CN107190763A CN107190763A CN201710448851.6A CN201710448851A CN107190763A CN 107190763 A CN107190763 A CN 107190763A CN 201710448851 A CN201710448851 A CN 201710448851A CN 107190763 A CN107190763 A CN 107190763A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses the class large diameter pile and its construction method by many paxilla Shu Hecheng, the structure includes several structure identical foundation pile units, foundation pile unit is made up of A group foundation pile units and B group foundation pile unit uniform intervals, A group foundation pile units and B group foundation piles unit include concrete main body and steel reinforcement cage, occlusion groove is provided with the outside of steel reinforcement cage, the occlusion groove between adjacent A group foundation pile units and B group foundation pile units is overlapped.The present invention is surrounded by a branch of by many minor diameter foundation piles using theoretical pile center as the center of circle, and being mutually twisted between foundation pile integral turns into a species large diameter pile.It is of the invention to use conventional Small Diameter Pile construction technology completely, it is not necessary to high-power construction machinery input, the advantage of major diameter had both been played, difficulty of construction, scope of application increase are reduced again;Because not restricted by large-scale construction equipment, it can simultaneously be constructed with multiple pile foundations, greatly save the construction period of pile foundation;Engineering cost is saved, economic benefit is obvious.
Description
Technical field
It is big in particular to a kind of class by many paxilla Shu Hecheng the invention belongs to the pile foundation technical field of engineering construction
Diameter stake and its construction method.
Background technology
Pile foundation is the most common architecture basics form of engineering construction field, as high-rise building, longspan structure are sent out
Exhibition, the structural load of super large requires that pile foundation bearing load is increasing, and this requires Pile Diameter increasing, and length is more next
It is longer, and mostly multi-column pier foundation, to bear bigger structural load.At present, used in science of bridge building in some heavy constructions
The new August I Bridge of 4m and above large-diameter pile foundation, such as Tongling Yangtze Bridge, Nanchang uses 4m large diameter piles, and the Jiangxi exit of a lake is big
Bridge etc. uses diameter 5m large diameter piles.There is obvious difference compared with Small Diameter Pile using major diameter, can not only improve carrying
Power, and can reduce underwater work, accelerating construction progress improves the antidetonation of structure, wind resisting stability and resists impact capacity,
Lower construction costs.
Large diameter pile foundation is restricted by large-scale construction equipment, just there is major diameter churning driven typically only in mega-construction project
Machine is equipped with, or using hand-dug pile foundation in the case of geological conditions possesses, pile foundation construction machinery number of units is limited, often greatly
The construction period of diameter pile foundation controls the progress of whole engineering, particularly runs into hard rock, is limited by mechanical output,
Difficulty of construction is very big.Gas lift reverse circulation rotary rig is used current large diameter pile more, it is high-power general in 300KW or so, it is maximum
320kN*m or so moment of torsion is provided, in below 450Kpa, drilling depth be not it is very deep in the case of can be only achieved producer and provide most
Big bore diameter.To realize that large diameter pile foundation seeks the pile foundation construction machinery of more high pulling torque, it can not solve to ask in a short time
Topic.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art part, changes thinking, using the thinking that breaks the whole up into parts, use
Multiple Small Diameter Pile Shu Hecheng class large diameter piles, propose a kind of simple program, easy construction, safe and reliable by many paxilla beams
The class large diameter pile and its construction method of synthesis.
To achieve the above object, the class large diameter pile by many paxilla Shu Hecheng designed by the present invention, its special character
It is, including several structure identical foundation pile units, the foundation pile unit is uniform by A group foundation pile units and B group foundation pile units
Interval composition, A groups foundation pile unit and B group the foundation pile unit is included on the outside of concrete main body and steel reinforcement cage, the steel reinforcement cage
Occlusion groove is provided with, the occlusion groove between the adjacent A group foundation pile units and B group foundation pile units is overlapped.
Center foundation pile is provided with the middle part of A groups foundation pile unit and B the group foundation pile unit, the center foundation pile includes coagulation
Occlusion groove, the center foundation pile and all adjacent A group foundation pile lists are provided with the outside of native main body and steel reinforcement cage, the steel reinforcement cage
Occlusion groove between member and B group foundation pile units is overlapped.As needed, when class large diameter pile position friction pile, in can not constructing
Heart foundation pile, to save concrete amount;When for stanchion, it is engaged using plain concrete foundation pile with surrounding foundation pile, enhancing class is big
The bearing capacity of diameter stake.Further to improve pile body bearing capacity, sometimes also using the armored concrete center for being provided with steel reinforcement cage
Foundation pile.
Circle is in the cross section of the foundation pile unit, and the cross section for being the steel reinforcement cage is circular or fan-shaped.Steel reinforcement cage
It is different according to the degree of engagement of pile body, it can be circular steel reinforcement cage or fan-shaped steel reinforcement cage, i.e., on the basis of circular steel reinforcement cage, remove
Construction foundation pile is in the reinforcing bar being engaged in segment limit in advance, when preventing that steel reinforcement cage is engaged to construction in later period foundation pile with foundation pile of constructing in advance
Interference.
The occlusion groove is fusiformis structure wide in the middle of the point of two ends.The width of the occlusion groove is foundation pile cell width
1/10~3/10.
The number of A groups foundation pile unit and B the group foundation pile unit is respectively 3.
A kind of construction method applied to the above-mentioned class large diameter pile by many paxilla Shu Hecheng, it is characterized in that,
Comprise the following steps:
1) the stake holes hole of construction A group foundation pile units;
2) steel reinforcement cage of A group foundation pile units is placed, and is put into occlusion groove with being engaged the filling of groove shapes identical
Rod;
3) casting concrete, forms concrete main body, completes the construction of A group foundation piles unit;
4) treat that the concrete strength of A group foundation pile units reaches pre-hardening degree, take out in filler rod, the occlusion groove and formed
Headspace;
5) the stake holes hole of construction B group foundation pile units;
6) steel reinforcement cage of B group foundation pile units is placed;
7) what is overlapped between casting concrete, formation concrete main body, A groups foundation pile unit and B the group foundation pile unit stings
Groove is closed by casting concrete, the construction of B group foundation piles unit is completed.
Preferably, the filler rod is elastomer structure, and outside scribbles releasing agent, reduces cohesive force, conveniently pulls out.Due to
The elastic characteristic of rubber, during axis tension, because of poisson effect, cross-direction shrinkage is natural with having poured foundation pile disengagement, conveniently pulls out
Remove.
Preferably, axis is provided with supporting steel wire inside the filler rod, the reinforcing wire along along axis strengthens rubber bar
Tensile strength, prevents withdrawing rubber bar to be pulled off..
Preferably, several foundation pile units in the A groups foundation pile unit are according to step 1)~3) at the same construction or according to
Several foundation pile units in secondary construction, the B groups foundation pile unit are according to step 4)~7) while constructing or constructing successively.
The present invention provides a kind of class large diameter pile being constructed into by many paxilla beams conjunctions and its construction method, its operation principle
For:It is surrounded by by many minor diameter foundation piles using theoretical pile center as the center of circle a branch of, being mutually twisted between foundation pile integral turns into one
Species large diameter pile.The invention has the advantages that:
1st, completely using conventional Small Diameter Pile construction technology, it is not necessary to high-power construction machinery input, both played big straight
The advantage in footpath, reduces difficulty of construction, scope of application increase again;
2nd, because not restricted by large-scale construction equipment, it can simultaneously be constructed with multiple pile foundations, greatly save the construction of pile foundation
Cycle;
3rd, engineering cost has been saved, economic benefit is obvious;
4th, the pile foundation engineering that can be applied in highway, railway municipal works, it is applied widely.
Brief description of the drawings
Fig. 1 is the structural representation of the class large diameter pile of the invention by many paxilla Shu Hecheng.
Fig. 2 class large diameter piles in the step 1 of the construction method of many paxilla Shu Hecheng class large diameter pile for the present invention
Structural representation.
Fig. 3 class large diameter piles in the step 2 of the construction method of many paxilla Shu Hecheng class large diameter pile for the present invention
Structural representation.
Fig. 4 is the structural representation of filler rod in Fig. 3.
Fig. 5 class large diameter piles in the step 3 of the construction method of many paxilla Shu Hecheng class large diameter pile for the present invention
Structural representation.
Fig. 6 class large diameter piles in the step 4 of the construction method of many paxilla Shu Hecheng class large diameter pile for the present invention
Structural representation.
Fig. 7 class large diameter piles in the step 7 of the construction method of many paxilla Shu Hecheng class large diameter pile for the present invention
Structural representation.
In figure:Foundation pile unit 1, A group foundation pile unit 1A, B group foundation pile unit 1B, center foundation pile 1C, concrete main body 11 is interior
The steel reinforcement cage 12 put, is engaged groove 13, filler rod 2.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail, but the embodiment should not be construed as pair
The limitation of the present invention.
As shown in figure 1, a kind of class large diameter pile by many paxilla Shu Hecheng of the invention includes several structure identicals
Foundation pile unit 1, circle is in the cross section of foundation pile unit 1, and the cross section for being steel reinforcement cage 12 is circular or fan-shaped.Foundation pile unit 1
For reinforced concrete structure, mostly circular cross-section, it is made up of concrete main body 11 and built-in steel reinforcement cage 12, the basis of steel reinforcement cage 12
The size of occlusion groove 13 of pile body, can be circular steel reinforcement cage 12a or fan-shaped steel reinforcement cage 12b, on the basis of steel reinforcement cage 12, remove
Reinforcing bar of the construction foundation pile unit 1 in occlusion segment limit, forms occlusion groove 13, prevents steel reinforcement cage 12 to construction in later period base in advance
Pile element 1 and interference when construction foundation pile unit 1 is engaged in advance.
Foundation pile unit 1 is made up of A group foundation pile unit 1A and B group foundation pile unit 1B uniform intervals, A group foundation pile units 1A and B
Group foundation pile unit 1B includes concrete main body 11 and steel reinforcement cage 12, and the outside of steel reinforcement cage 12 is provided with occlusion groove, adjacent A groups
Occlusion groove 13 between foundation pile unit 1A and B group foundation pile unit 1B is overlapped.It is fusiformis wide in the middle of the point of two ends to be engaged groove 13
Structure.The width for being engaged groove 13 is about the 1/10~3/10 of the width of foundation pile unit 1.
Center foundation pile 1C is provided with the middle part of A group foundation pile unit 1A and B group foundation pile units 1B, center foundation pile 1C includes coagulation
Native main body 11 and steel reinforcement cage 12, the outside of steel reinforcement cage 12 are provided with occlusion groove 13, center foundation pile 1C and all adjacent A group foundation piles
Occlusion groove 13 between unit 1A and B group foundation pile unit 1B is overlapped.The number of A group foundation pile units and B group foundation pile units is most
In the case of be respectively 3.
One embodiment of the present of invention is made up of there is provided a species large diameter pile many minor diameter foundation pile units 1, according to
Sequence of construction and position are divided into A group foundation pile unit 1A, B group foundation pile units 1B, center foundation pile 1C, adjacent minor diameter foundation pile unit
It is mutually twisted between 1, the engineering time, i.e. first interval construction A group foundation pile unit 1A treated that A group foundation pile units 1A coagulates every jumping pile driving construction
Gu after construct again B group foundation pile unit 1B, and make together with A groups foundation pile unit 1A is mutually twisted with B group foundation pile units 1B, the company of being formed
The class large diameter pile of continuous closing.Also can be as needed, construction center foundation pile 1C is finally augmented, to strengthen pile body, bearing capacity is improved.
As needed, when class large diameter pile position friction pile, can not construct center foundation pile 1C, be used to save concrete
Amount;When for stanchion, it is engaged using plain concrete center foundation pile 1C with foundation pile unit 1A, 1B, strengthens the carrying of class large diameter pile
Power.Further to improve pile body bearing capacity, sometimes also using the armored concrete center foundation pile for being provided with steel reinforcement cage.
A kind of construction method applied to the above-mentioned class large diameter pile by many paxilla Shu Hecheng, comprises the following steps:
1) construction A group foundation pile units 1A stake holes hole, as shown in Figure 2.Construct A group foundation pile units 1A's using conventional method
Stake holes hole.
2) A group foundation pile units 1A steel reinforcement cage 12 is placed, and is put into occlusion groove 13 with being engaged the shape phase of groove 13
Same filler rod 2, as shown in Figure 3.Filler rod 2 is elastomer structure, mostly rubber bar.Filler rod 2 be shaped as two ends point in
Between wide fusiformis structure, as shown in Figure 4.Due to the elastic characteristic of rubber, during axis tension, because of poisson effect, cross-direction shrinkage, from
So disengage, conveniently pull out with having poured foundation pile;Cross sectional shape is with overlapping shapes at occlusion, and length is long with stake.The outside of filler rod 2
Releasing agent is scribbled, reduces cohesive force, conveniently pulls out.The reinforcing wire along along axis of filler rod 2, strengthens rubber bar power resistance strength, puts
It is to break to put withdrawing rubber bar.
3) casting concrete, forms concrete main body 11, completes A group foundation pile units 1A constructions, as shown in Figure 5.
4) treat that A group foundation pile units 1A concrete strength reaches pre-hardening degree, generally 48h, 2MPa or so, take out filling
Headspace is formed in rod 2, occlusion groove 13, as shown in Figure 6.
5) construction B group foundation pile units 1B stake holes hole;Constructed using conventional method B group foundation pile units 1B stake holes hole, by
It is cavity in occlusion groove 13, constructs and unaffected.
6) B group foundation pile units 1B steel reinforcement cage 12 is placed;
7) casting concrete, forms what is overlapped between concrete main body 11, A group foundation pile unit 1A and B group foundation pile units 1B
Groove 13 is engaged by casting concrete, B group foundation pile units 1B constructions are completed, as shown in Figure 7.
Several foundation pile units in A group foundation pile units 1A are according to step 1)~3) at the same construction or construct successively, B groups
Several foundation pile units in foundation pile unit 1B are according to step 4)~7) while constructing or constructing successively.
The above described is only a preferred embodiment of the present invention, not doing any formal to the structure of the present invention
Limitation.Any simple modification, equivalent variations and modification that every technical spirit according to the present invention is made to above example,
In the range of still falling within technical scheme.
Claims (10)
1. a kind of class large diameter pile by many paxilla Shu Hecheng, it is characterised in that:Including several structure identical foundation pile lists
First (1), the foundation pile unit (1) is made up of A group foundation pile units (1A) and B group foundation pile unit (1B) uniform intervals, the A groups base
Pile element (1A) and B group foundation pile units (1B) include concrete main body (11) and steel reinforcement cage (12), and the steel reinforcement cage (12) is outside
Side is provided with occlusion groove (13), the occlusion groove between the adjacent A group foundation pile units (1A) and B group foundation pile units (1B)
(13) overlap.
2. the class large diameter pile according to claim 1 by many paxilla Shu Hecheng, it is characterised in that:The A groups foundation pile
Center foundation pile (1C) is provided with the middle part of unit (1A) and B group foundation pile units (1B), the center foundation pile (1C) includes concrete
Be provided with occlusion groove (13) on the outside of main body (11) and steel reinforcement cage (12), the steel reinforcement cage (12), the center foundation pile (1C) with
Occlusion groove (13) between all adjacent A group foundation pile units (1A) and B group foundation pile units (1B) is overlapped.
3. the class large diameter pile according to claim 1 by many paxilla Shu Hecheng, it is characterised in that:The foundation pile unit
(1) cross section is circle, is that the cross section of the steel reinforcement cage (12) is circular or sector.
4. the class large diameter pile according to claim 1 by many paxilla Shu Hecheng, it is characterised in that:The occlusion groove
(13) it is arcuate structure wide in the middle of the point of two ends.
5. a kind of class large diameter pile by many paxilla Shu Hecheng according to claim 3, it is characterised in that:The occlusion
The width of groove (13) is the 1/10~3/10 of foundation pile unit (1) width.
6. a kind of class large diameter pile by many paxilla Shu Hecheng according to claim 4, it is characterised in that:The A groups
The number of foundation pile unit (1A) and B group foundation pile units (1B) is 3.
7. a kind of construction method of class large diameter pile by many paxilla Shu Hecheng, it is characterised in that:Comprise the following steps:
1) the stake holes hole of construction A group foundation pile units (1A);
2) steel reinforcement cage (12) of A group foundation pile units (1A) is placed, and is put into occlusion groove (13) with being engaged groove (13) shape
Shape identical filler rod (2);
3) casting concrete, forms concrete main body (11), completes A group foundation pile units (1A) construction;
4) treat that the concrete strength of A group foundation pile units (1A) reaches pre-hardening degree, take out in filler rod, the occlusion groove (13)
Form headspace;
5) the stake holes hole of construction B group foundation pile units (1B);
6) steel reinforcement cage (12) of B group foundation pile units (1B) is placed;
7) casting concrete, forms concrete main body (11), between the A groups foundation pile unit (1A) and B group foundation pile units (1B)
The occlusion groove (13) of coincidence completes B group foundation pile units (1B) construction by casting concrete.
8. super-span dome hollow guiding excavation method in underground nuclear reactor cavern according to claim 7, its feature
It is:The filler rod (2) is elastomer structure, and outside scribbles releasing agent.
9. the construction method of the class large diameter pile according to claim 8 by many paxilla Shu Hecheng, it is characterised in that:Institute
State and axis is provided with supporting steel wire inside filler rod (2).
10. the construction method of the class large diameter pile according to claim 7 by many paxilla Shu Hecheng, it is characterised in that:
Several foundation pile units in the A groups foundation pile unit (1A) are according to step 1)~3) while construct or construct successively, the B
Several foundation pile units in group foundation pile unit (1B) are according to step 4)~7) while constructing or constructing successively.
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CN201710448851.6A CN107190763B (en) | 2017-06-14 | 2017-06-14 | Similar-large-diameter pile formed by bundling a plurality of small piles and construction method thereof |
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CN201710448851.6A CN107190763B (en) | 2017-06-14 | 2017-06-14 | Similar-large-diameter pile formed by bundling a plurality of small piles and construction method thereof |
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CN107190763B CN107190763B (en) | 2023-01-17 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108166482A (en) * | 2017-12-25 | 2018-06-15 | 中国核工业华兴建设有限公司 | A kind of precast concrete pile suitable for Soft Soil combines and its construction method |
CN109487777A (en) * | 2018-11-12 | 2019-03-19 | 山西晋建加固特种建筑工程有限公司 | A method of a reinforcing deep soft soil foundation of filling the span of a man's arms is formed using slip casing by pressure |
CN110258593A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Friction pile for slope treatment |
CN112659352A (en) * | 2020-03-19 | 2021-04-16 | 王郁东 | Prestressed concrete cluster pipe pile processing technology |
CN114517488A (en) * | 2020-11-16 | 2022-05-20 | 沈军 | Small pile foundation construction method |
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CN206859247U (en) * | 2017-06-14 | 2018-01-09 | 中铁第四勘察设计院集团有限公司 | By more paxilla Shu Hecheng class large diameter pile |
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CN108166482A (en) * | 2017-12-25 | 2018-06-15 | 中国核工业华兴建设有限公司 | A kind of precast concrete pile suitable for Soft Soil combines and its construction method |
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CN109487777A (en) * | 2018-11-12 | 2019-03-19 | 山西晋建加固特种建筑工程有限公司 | A method of a reinforcing deep soft soil foundation of filling the span of a man's arms is formed using slip casing by pressure |
CN110258593A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Friction pile for slope treatment |
CN112659352A (en) * | 2020-03-19 | 2021-04-16 | 王郁东 | Prestressed concrete cluster pipe pile processing technology |
CN114517488A (en) * | 2020-11-16 | 2022-05-20 | 沈军 | Small pile foundation construction method |
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