CN108166484A - A kind of the expansive concrete steel-pipe pile and construction method of multi-functional stress dispersing type - Google Patents
A kind of the expansive concrete steel-pipe pile and construction method of multi-functional stress dispersing type Download PDFInfo
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- CN108166484A CN108166484A CN201711368112.2A CN201711368112A CN108166484A CN 108166484 A CN108166484 A CN 108166484A CN 201711368112 A CN201711368112 A CN 201711368112A CN 108166484 A CN108166484 A CN 108166484A
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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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Abstract
The invention discloses the present invention relates to a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type and construction methods and construction method, using steel-pipe pile as agent structure, the uniformly distributed various forms of holes of pile body, inside perfusion expansive concrete or expansive concrete and ordinary concrete packer grouting, it is used cooperatively with high-pressure slip-casting technique, various forms of stress dispersion expanders are formed about in hole, optionally add in a certain amount of rubble simultaneously, it is cost-effective, bottom end both can ordinary concrete sealing of hole, also cocoa combination claw support form compound foundation.Consolidation effect is apparent, and construction is quick, and stress is long homodisperse along stake, and the stress dispersion expander of forward and reverse has good resistance to compression resistance to plucking anti-floating performance, effectively reduces differential settlement, different pile-type and construction method can be selected according to different grounds.
Description
Technical field
The present invention relates to building, civil construction field, especially a kind of expansive concrete steel of multi-functional stress dispersing type
Pile pile and construction method.
Background technology
In recent years, with economic and science and technology development, construction business is quickly grown, in order to improve the stability of building
With the bearing capacity of ground, the type of foundation of China's building construction is typically chosen pile foundation.According to the purposes and structure feature of building,
And the requirement to ground, different pile foundation type and construction technology can be selected, to ensure the safety of building.
It can be roughly divided into for the foundation pile of building：Steel-pipe pile, concrete-pile and bored concrete pile.Steel-pipe pile bulk strength
Greatly, the preferable tension of energy, resistance to compression is uniform in material, light and firm compared to concrete precast pile, convenient transportation, and construction is fast
Speed, but ordinary steel pile pile skin-friction force is small, easily settles, and be easy to detach with inner concrete；Concrete-pile compressive property
It is good, low cost, but tensile property is poor, it is impossible to as uplift pile, crack is susceptible to, the easy broken pile of tension after settling resists
Shock stability is poor.The configuration of bored concrete pile reinforcing bar is flexible, and stress performance is good, and anti-seismic performance is good, and effect on environment is small, but work progress is hidden
It covers, complex process, broken pile easily occurs, construction quality is more difficult to control.
Invention content
The present invention proposes a kind of the expansive concrete steel-pipe pile and construction party of multi-functional stress dispersing type for case above
Method, consolidation effect is apparent, and pressure, pulling force can be made to be uniformly dispersed along pile body, has good bearing capacity and resistance to plucking anti-floating performance, applies
Work method is various, is applicable in a variety of different grounds.
In order to realize above-mentioned technical characteristic, the object of the present invention is achieved like this：A kind of multi-functional stress dispersing type
Expansive concrete steel-pipe pile, it includes steel-pipe pile, and structure based on the steel-pipe pile is uniformly arranged on the side wall of steel-pipe pile
Hole, the position where described hole are hinged with wing plate by wing plate rotary shaft；The bottom of the steel-pipe pile is perfused with back cover
Concrete, the segment length where steel-pipe pile is internally located at wing plate are perfused with expansive concrete, adjacent expansive concrete it
Between normal concrete is perfused, sealing of hole concrete is perfused at the top of the steel-pipe pile.
The separate layer of the expansive concrete and normal concrete is provided with demarcation strip.
The outside of the steel-pipe pile is provided with multi-turn stiffening rib, and the stiffening rib is arranged on hole position on steel-pipe pile
Top and bottom.
The wing plate of described hole position uses openable and closable mounting structure；It opens including upward opening formula wing plate and downwards
Mouth formula wing plate；The wing plate, in closed state, will be rotated when steel-pipe pile sinks after expansive concrete is perfused along its wing plate
Axis opens.
The expander of tilted conical forward or backwards is collectively formed in the perfusion expansive concrete and the wing plate opened.
Described hole is using crescent hole, herringbone hole or segmentation spiral shape hole, and the hole of above-mentioned form is swollen
The expander structure that will form the uniformly overall length outside steel-pipe pile under swollen concrete effect.
The section of hole its periphery suit rubber sleeve is opened up on the steel-pipe pile, is machined on the rubber sleeve and hole
Matched cooperation hole.
Claw support has been poured on the bottom concrete of the steel-pipe pile.
Rubble is mixed in the expansive concrete and normal concrete.
The construction method of the expansive concrete steel-pipe pile of any one multi-functional stress dispersing type, it is characterised in that including with
Lower step：
Step1：Pile body hole is laid, according to geological conditions and bearing capacity of single pile requirement, in pile body setting and void shape ruler
Very little identical wing plate is connect by wing plate rotary shaft with steel-pipe pile；
Step2：Back cover carries out back cover, and add one piece of demarcation strip with bottom concrete；
Step3：Drilling drills to projected depth, immediately down tube, and it is closed state that wing plate is kept during this, and down tube process is prevented
Only hole wall collapse；
Step4：Steel-pipe pile is perfused, section construction：Hole section filling rubble is being opened up, and expansive concrete is perfused, ensured swollen
Swollen amount of concrete>50%；Bonus point partition board continues thereafter with a certain amount of rubble of filling, and common coagulation is perfused not opening up hole section
Soil；
Step5：Step4 is repeated, until reaching designed elevation；
Step6：Section reserved at the top of steel-pipe pile is carried out envelope note by whole hole with sealing of hole concrete.
The method have the advantages that：
1st, above-mentioned steel-pipe pile stress performance is good, the advantages of can having various pile-type concurrently, mutually promotes, and gives full play to steel-pipe pile and swollen
Swollen coagulation soil characteristics.
The 2nd, different pile body hole cavity forms is set, pressure or pulling force is made to be uniformly dispersed along pile body, stress performance is good, can
Improve the bearing capacity and stability of pile body.
3rd, upper end opening formula wing plate can effectively reduce the generation of differential settlement, and lower ending opening formula wing plate can improve resistance to plucking and resist
Buoyancy energy.
4th, crescent, herringbone, segmentation spiral shape steel-pipe pile cause pressure or tension uniform to be distributed in overall length, resistance to plucking
Anti-floating and bearing capacity are significantly strengthened.
5th, periphery is surrounded by the steel-pipe pile of waterproof rubber sleeve available for underwater construction.
6th, steel-pipe pile end and flange plate type hole upper and lower side setting stiffening rib, can prevent hole edge stress from concentrating, together
When play contining function, give full play to the performance of expansive concrete and steel-pipe pile.
7th, steel-pipe pile filling process and high-pressure slip-casting technique are used cooperatively, and it is low, impervious strong can to form intensity height, compressibility
With the complex having good stability.
8th, full section perfusion expansive concrete and setting demarcation strip packer grouting, can give full play to expansive concrete, ordinary concrete
With the mechanical characteristic of steel, it can not only improve geological conditions, the stress distributing expander of formation can also improve steel-pipe pile resistance to plucking
Anti-floating and bearing capacity.
9th, a certain amount of rubble is added in while being in the milk, is gathered materials on the spot, it is convenient and efficient, it is cost-effective.
10th, bottom end sealing of hole before immersed tube, facilitates construction, and quality is guaranteed.Also can be supported with reference to claw to be formed it is compound
Ground improves lower support condition, pile body bearing capacity is improved, compared to more traditional explosive expansion head, to periphery geological conditions shadow
Sound is smaller, and is easy to control.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 present invention uses the main sectional view of wing plate upward opening.
Fig. 2 present invention uses the left view of wing plate upward opening.
Fig. 3 present invention is using the downwardly open main sectional view of wing plate.
Fig. 4 present invention is using the downwardly open left view of wing plate.
Fig. 5 present invention uses the steel-pipe pile of crescent hole.
Fig. 6 present invention uses the steel-pipe pile of herringbone hole.
Fig. 7 present invention is using the steel-pipe pile for being segmented spiral shape hole.
Fig. 8 present invention is suitable for the hole outpacking rubber set expansive concrete steel-pipe pile schematic diagram of underwater construction.
Fig. 9 bottom ends of the present invention use the schematic diagram of claw support construction.
In figure：Steel-pipe pile 1, bottom concrete 5, rubble 6, normal concrete 7, expansive concrete 8, divides at wing plate rotary shaft 4
Partition board 9, sealing of hole concrete 10, crescent hole 11, herringbone hole 12, segmentation spiral shape hole 13, cooperation hole 14, rubber
Set 15, claw support 16.
The upper end opening formula wing plate of 2-1-closed state；
The lower ending opening formula wing plate of 2-2-closed state；
3-1-by the upper end opening formula wing plate of distending；
3-2-by the lower ending opening formula wing plate of distending.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figs 1-9, a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type, it includes steel-pipe pile 1, the steel pipe
Structure based on stake 1, is uniformly arranged hole, the position where described hole is rotated by wing plate on the side wall of steel-pipe pile 1
Axis 4 is hinged with wing plate；The bottom of the steel-pipe pile 1 is perfused with bottom concrete 5, where steel-pipe pile 1 is internally located at wing plate
One segment length is perfused with expansive concrete 8, and normal concrete 7 is perfused between adjacent expansive concrete 8, the steel-pipe pile 1
Top is perfused with sealing of hole concrete 10.By using above-mentioned steel-pipe pile 1, various forms of stress dispersions are formed about in hole
Expander so that pressure or pulling force are uniformly dispersed, and are applicable to different grounds.Giving full play to the firm good characteristic of steel-pipe pile
Meanwhile pile body hole can make concrete uniformly diffuse to form stress distributing expander around, so that pressure or pulling force
It is uniformly dispersed.
Further, the separate layer of the expansive concrete 8 and normal concrete 7 is provided with demarcation strip 9.
Further, the outside of the steel-pipe pile 1 is provided with multi-turn stiffening rib 17, and the stiffening rib 17 is arranged on steel-pipe pile
The top and bottom of hole position on 1.It prevents hole edge stress from concentrating, while plays contining function, give full play to swollen
The performance of swollen concrete and steel-pipe pile.
Further, the wing plate of described hole position uses openable and closable mounting structure；Including the upward opening formula wing
Plate and downwardly open formula wing plate；The wing plate is in closed state when steel-pipe pile 1 sinks, will after expansive concrete 8 is perfused
It is opened along its wing plate rotary shaft 4.Wing plate can be opened by distending along rotary shaft when expansive concrete plays a role, by expansion coagulation
The expander of the tilted conical of forward and reverse is collectively formed in soil and wing plate so that pressure or pulling force are uniformly dispersed.
Further, the swollen of tilted conical forward or backwards is collectively formed in the perfusion expansive concrete 8 and the wing plate opened
Swollen body.
Further, described hole is above-mentioned using crescent hole 11, herringbone hole 12 or segmentation spiral shape hole 13
The hole of form will be formed uniformly in the expander structure of 1 outside overall length of steel-pipe pile under the effect of expansive concrete 8.
Further, its periphery of the section of hole is opened up on the steel-pipe pile 1 and is set with rubber sleeve 15, the rubber sleeve 15
On be machined with and hole it is matched cooperation hole 14.
Further, claw support 16 has been poured on the bottom concrete 5 of the steel-pipe pile 1.
Further, it is mixed with rubble 6 in the expansive concrete 8 and normal concrete 7.Steel-pipe pile all perfusion expansions
Concrete, also sectional be in the milk and demarcation strip be set.Grain size preferable rubble in part can be added in when grouting.Bottom end can
Common sealing of hole is carried out, claw can be also combined and support form compound foundation.Filling process and high-pressure slip-casting technique are used cooperatively.
Further, expansive concrete is all perfused in steel-pipe pile, while expansive concrete expands outward along hole, not
The section of hole, expansive concrete expansion also can provide pressure to steel-pipe pile so that pile body occurs to fill while small expansion
The mechanical characteristic of steel is waved in distribution.
Further, demarcation strip is set during packer grouting.Flange plate type steel-pipe pile is provided with hole section when being in the milk fills expansion
Concrete, the section of non-hole-opening fill ordinary concrete, set demarcation strip therebetween, prevent from invading mixing mutually, give full play to ordinary concrete
Anti-compression property so that expansive concrete is fully radially expanded, formed large-scale stress dispersion expander, play expander to greatest extent
Effect.
Further, grain size preferable rubble in part can be added in when grouting.A part of concrete can be saved, it is cost-effective,
It gathers materials on the spot, but needs to control the amount of rubble, expansive concrete section need to ensure expansive concrete amount>50%.
Further, the first form of construction work of bottom end：Certain thickness concrete sealing of hole is poured, then heavy
Pipe.During this mode can prevent immersed tube, the soil body is squeezed into, and easy for construction, and sealing of hole concrete quality is guaranteed.
Further, second of form of construction work of bottom end：Claw is supported press-in bottom by first immersed tube to absolute altitude with compression bar
Portion is supported a part of claw in press-in Rock And Soil, by compression bar then by compression bar liter at the top of steel-pipe pile using press device
It rises, be in the milk sealing of hole in steel-pipe pile bottom.Claw is supported with being pierced Rock And Soil form compound foundation, while slurries penetrate into, and can change
The supporting condition of kind steel-pipe pile lower part, improves pile body bearing capacity.
Embodiment 2：
Such as Fig. 1-4, upper end opening formula wing plate Bearing Capacity of Steel Pipe Piles is good, suitable for the construction under the conditions of general geology, lower ending opening
Formula wing plate steel-pipe pile resistance to plucking anti-floating performance is good, available for there is the construction of groundwater environment.
The construction method of the expansive concrete steel-pipe pile of any one multi-functional stress dispersing type, it is characterised in that including with
Lower step：
Step1：Pile body hole is laid, according to geological conditions and bearing capacity of single pile requirement, in pile body setting and void shape ruler
Very little identical wing plate is connect by wing plate rotary shaft 4 with steel-pipe pile 1；
Step2：Back cover carries out back cover, and add one piece of demarcation strip 9 with bottom concrete 5；
Step3：Drilling drills to projected depth, immediately down tube, and it is closed state that wing plate is kept during this, and down tube process is prevented
Only hole wall collapse；
Step4：Steel-pipe pile 1 is perfused, section construction：Hole section filling rubble 6 is being opened up, and expansive concrete 8 is perfused, ensured
Expansive concrete amount>50%；Bonus point partition board 9 continues thereafter with a certain amount of rubble 6 of filling, and not opening up, the perfusion of hole section is common
Concrete seven；
Step5：Step4 is repeated, until reaching designed elevation；
Step6：Section reserved at the top of steel-pipe pile is carried out envelope note by whole hole with sealing of hole concrete 10.
Embodiment 3：
It is main to introduce crescent of the present invention, herringbone, be segmented the general construction method of spiral form hole steel-pipe pile such as Fig. 5-7,
Such steel-pipe pile is suitable for the construction under the conditions of general geology.
Step1：Pile body hole is laid, and according to geological conditions and bearing capacity of single pile requirement, setting crescent moon is selected in pile body
The hole of shape hole 11, herringbone hole 12 or segmentation spiral shape hole 13；
Step2：Drilling, drills to projected depth, down tube, down tube process prevent hole wall collapse immediately；
Step3：Back cover carries out back cover with bottom concrete 5, and next step is carried out when concrete strength reaches 75%；
Step4：Material of body of a pile is perfused, and overall length perfusion expansive concrete or can add in a certain amount of rubble 6, grouting reaches designed elevation
Until；
Step5：Section reserved at the top of steel-pipe pile is carried out envelope note by whole hole with sealing of hole concrete 10.
Embodiment 4：
The main universal method for introducing the waterproof rubber sleeve hole steel pipe pile driving construction of the present invention.Such steel-pipe pile is suitable for applying under water
Work.
Step1：Pile body hole is laid, and according to geological conditions and bearing capacity of single pile requirement, setting round hole is selected in pile body
The quantity and spacing in hole 14 ensure circular hole uniformly and in same level；
Step2：Rubber sleeve is laid, and a certain thickness high resiliency of circle one fixed width, corrosion resistant is laid in circular hole periphery
Waterproof rubber sleeve 15；
Step3：Back cover carries out back cover with bottom concrete 5.Next step is carried out when concrete strength reaches 75%；
Step4：Drilling drills to projected depth, immediately down tube, and it is drying regime that 1 inside of steel-pipe pile is kept during this, down tube
Process prevents hole wall collapse；
Step5：Material of body of a pile is perfused, and overall length perfusion expansive concrete or can add in a certain amount of rubble 6, grouting reaches designed elevation
Until；
Step6：Section reserved at the top of steel-pipe pile is carried out envelope note by whole hole with sealing of hole concrete 10.
Embodiment 5：
The main construction method for introducing claw supporting steel pile pile of the present invention.Such steel-pipe pile is suitable for the weaker holding force in basic lower end
The construction of layer.
Step 1：Pile body hole is laid, and according to geological conditions and bearing capacity of single pile requirement, it is suitable to select setting in pile body
Hole form can refer to the hole form of first three case；
Step 2：Drilling, drills to projected depth, down tube, down tube process prevent hole wall collapse immediately；
Step 3：Claw support 16 is first pressed into bottom with compression bar, is adopted at the top of steel-pipe pile by the construction of claw support and back cover
With press device by compression bar, a part of claw is supported in press-in Rock And Soil, is then risen compression bar, is filled in steel-pipe pile bottom
Note 5 sealing of hole of bottom concrete.
Step 4：Material of body of a pile is perfused and whole hole work progress refers to first three case.
Above-described embodiment be used for illustrate the present invention rather than limit the invention, the present invention spirit and
In scope of the claims, to any modifications and changes that the present invention makes, protection scope of the present invention is both fallen within.
Claims (10)
1. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type, which is characterized in that it includes steel-pipe pile（1）, it is described
Steel-pipe pile（1）Based on structure, in steel-pipe pile（1）Side wall on be uniformly arranged hole, the position where described hole passes through
Wing plate rotary shaft（4）It is hinged with wing plate；The steel-pipe pile（1）Bottom be perfused with bottom concrete（5）, in steel-pipe pile（1）It is interior
A segment length where portion is located at wing plate is perfused with expansive concrete（8）, adjacent expansive concrete（8）Between be perfused it is common mixed
Solidifying soil（7）, the steel-pipe pile（1）Top be perfused with sealing of hole concrete（10）.
2. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
State expansive concrete（8）And normal concrete（7）Separate layer be provided with demarcation strip（9）.
3. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
State steel-pipe pile（1）Outside be provided with multi-turn stiffening rib（17）, the stiffening rib（17）It is arranged on steel-pipe pile（1）Where upper hole
The top and bottom of position.
4. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
The wing plate for stating hole position uses openable and closable mounting structure；Including upward opening formula wing plate and downwardly open formula wing plate；
The wing plate is in steel-pipe pile（1）In closed state during sinking, in perfusion expansive concrete（8）After will be along its wing plate rotary shaft
（4）It opens.
5. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 4, it is characterised in that：Institute
State perfusion expansive concrete（8）The expander of tilted conical forward or backwards is collectively formed with the wing plate of opening.
6. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
Hole is stated using crescent hole（11）, herringbone hole（12）Or segmentation spiral shape hole（13）, the hole of above-mentioned form exists
Expansive concrete（8）Effect will be lower to be formed uniformly in steel-pipe pile（1）The expander structure of external overall length.
7. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
State steel-pipe pile（1）On open up hole section its periphery suit rubber sleeve（15）, the rubber sleeve（15）On be machined with and hole
The matched cooperation hole in hole（14）.
8. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
State steel-pipe pile（1）Bottom concrete（5）On poured claw support（16）.
9. a kind of expansive concrete steel-pipe pile of multi-functional stress dispersing type according to claim 1, it is characterised in that：Institute
State expansive concrete（8）And normal concrete（7）Inside it is mixed with rubble（6）.
10. the construction method of the expansive concrete steel-pipe pile of any one multi-functional stress dispersing type of claim 1-9, feature
It is to include the following steps：
Step1：Pile body hole is laid, according to geological conditions and bearing capacity of single pile requirement, in pile body setting and void shape ruler
Very little identical wing plate, passes through wing plate rotary shaft（4）With steel-pipe pile（1）Connection；
Step2：Back cover uses bottom concrete（5）Back cover is carried out, and adds one piece of demarcation strip（9）；
Step3：Drilling drills to projected depth, immediately down tube, and it is closed state that wing plate is kept during this, and down tube process is prevented
Only hole wall collapse；
Step4：Steel-pipe pile（1）Perfusion, section construction：Opening up hole section filling rubble（6）, and expansive concrete is perfused
（8）, ensure expansive concrete amount>50%；Bonus point partition board（9）, continue thereafter with a certain amount of rubble of filling（6）, hole is not being opened up
Normal concrete is perfused in section（7）；
Step5：Step4 is repeated, until reaching designed elevation；
Step6：Whole hole, with sealing of hole concrete（10）Section reserved at the top of steel-pipe pile is subjected to envelope note.
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| CN201711368112.2A CN108166484A (en) | 2017-12-18 | 2017-12-18 | A kind of the expansive concrete steel-pipe pile and construction method of multi-functional stress dispersing type |
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| CN201711368112.2A CN108166484A (en) | 2017-12-18 | 2017-12-18 | A kind of the expansive concrete steel-pipe pile and construction method of multi-functional stress dispersing type |
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| CN109682748A (en) * | 2019-01-04 | 2019-04-26 | 三峡大学 | Test the device and method of intensity under expansive concrete lateral confinement |
| CN111181122A (en) * | 2019-12-26 | 2020-05-19 | 浙江华云电力工程设计咨询有限公司 | Novel prevent cable pit structure of differential settlement |
| CN111879193A (en) * | 2020-08-11 | 2020-11-03 | 武汉扬吉科技有限公司 | Layered expansion jacking device and construction method thereof |
| CN115324033A (en) * | 2022-08-16 | 2022-11-11 | 中天建设集团有限公司 | Precast tubular pile construction method based on built-in high-expansion material self-expansion pile shoe structure |
| CN117988317A (en) * | 2024-03-29 | 2024-05-07 | 中铁城建集团第一工程有限公司 | Gravel pile and construction process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682748A (en) * | 2019-01-04 | 2019-04-26 | 三峡大学 | Test the device and method of intensity under expansive concrete lateral confinement |
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| CN117988317A (en) * | 2024-03-29 | 2024-05-07 | 中铁城建集团第一工程有限公司 | Gravel pile and construction process thereof |
| CN117988317B (en) * | 2024-03-29 | 2024-06-11 | 中铁城建集团第一工程有限公司 | Gravel pile and construction process thereof |
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Application publication date: 20180615 |
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