CN109137900A - It is CFG a kind of - Google Patents
It is CFG a kind of Download PDFInfo
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- CN109137900A CN109137900A CN201811238678.8A CN201811238678A CN109137900A CN 109137900 A CN109137900 A CN 109137900A CN 201811238678 A CN201811238678 A CN 201811238678A CN 109137900 A CN109137900 A CN 109137900A
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- Prior art keywords
- steel loop
- section
- cfg
- prefabricated
- 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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to CFG a kind of, it is related to construction engineering technical field, its technical solution includes pile body and prefabricated and can be fixed on the prefabricated pile crown on the upside of the pile body, the pile body includes load section and the linkage section positioned at load section one end, the section of the pile body is " T " shape, the diameter of the load section is less than the diameter of the connecting pin, and in the linkage section and position far from one end of load section offers spliced eye, and the prefabricated pile crown is plugged in the spliced eye.It is an advantage of the invention that can avoid the workload of cubic metre of earth secondary excavation and CFG sections of pile crowns under the premise of guaranteeing CFG support strengths, increase substantially construction efficiency and save project cost.
Description
Technical field
The present invention relates to construction engineering technical fields, more particularly, to CFG a kind of.
Background technique
In CFG (abbreviation of Cement Fly-ash Gravel, mean cement fly ash gravel pile) constructions, at present
Construction organization require construction stake top mark height be higher by design stake top absolute altitude be no less than 0.5 meter, after the completion of CFG pile driving construction, need people
Work secondary excavation is to design of pile top absolute altitude, and after soil is cleared, truncation is higher by the pile crown of designed elevation, secondary excavation and section pile crown wave
Take many manpowers, influences the duration；And foundation trench excavate and reject pile crown when, be easy to cause pile body break to design of pile top absolute altitude with
Under, it also needs to adopt remedial measures, simultaneously because necessarily reducing Bearing Capacity of Composite Foundation to inter-pile soil disturbance, process is tedious, time-consuming
It is longer, have been unable to meet the needs of rapid construction.
Such as the Chinese patent that notification number is CN206667237U, it discloses a kind of CFG pile precast pile head, prefabricated pile crown root
It is prefabricated in advance in factory according to piles with different diameter and user's requirement, before engineering CFG pile driving construction, the prefabricated pile crown of needs can be purchased, then
CFG pile driving construction is carried out, the earthwork can once be excavated to stake top absolute altitude, carry out CFG pile foundation pore-forming and placing concrete, pour to concrete
It builds to design of pile top absolute altitude, CFG pile precast pile head is inserted into stake.
After prior art among the above has the following deficiencies: that prefabricated pile crown is inserted into prefabricated pile, prefabricated pile
Upper end support strength becomes smaller, when carrying excessive it is also possible to being broken.
Summary of the invention
In view of the deficienciess of the prior art, the object of the present invention is to provide CFG a kind of, its advantage is that can guarantee
Under the premise of CFG support strengths, the workload of cubic metre of earth secondary excavation and CFG sections of pile crowns is avoided, construction is increased substantially
Efficiency simultaneously saves project cost.
Above-mentioned purpose of the invention have the technical scheme that it is CFG a kind of, including pile body, with
And it is prefabricated and the prefabricated pile crown on the upside of the pile body can be fixed on, the pile body includes load section and is located at load section one end
Linkage section, the section of the pile body is " T " shape, and the diameter of the load section is less than the diameter of the connecting pin, described
Linkage section and position offer spliced eye far from one end of load section, and the prefabricated pile crown is plugged in the spliced eye.
By using above-mentioned technical proposal, before constructing to CFG, first prefabricated required prefabricated pile crown, so
CFG pile driving construction is carried out afterwards, and the earthwork can once be excavated to stake top absolute altitude, CFG pile foundation pore-forming and placing concrete be carried out, to concrete
It pours to design of pile top absolute altitude, CFG pile precast pile head is inserted into stake, since prefabricated pile crown is inserted in pile body connection
In the spliced eye of section, the damage to pile body can be significantly reduced in this way, reduce the bearing capacity of single pile of pile body will not,
The workload for avoiding cubic metre of earth secondary excavation and CFG sections of pile crowns simultaneously, increases substantially construction efficiency and saves project cost.
The present invention is further arranged to: the section of the prefabricated pile head erect is " T " shape, including being connected in spliced eye
Inserting paragraph, and the connecting section positioned at inserting paragraph end；The prefabricated pile crown includes Steel bar rack and is wrapped in outside Steel bar rack
The concrete block of side.
By using above-mentioned technical proposal, the inserting paragraph of prefabricated pile crown is plugged into the spliced eye of connecting pin, will not be subtracted
The sidewall thickness of small pile body, it is smaller for the whole damaged condition of pile body in this way, while the connecting section of prefabricated pile crown can also
The bearing capacity of single pile for enough improving pile body, improves the stability of ground.
The present invention is further arranged to: offering injected hole, the inserting paragraph side at the vertical center of the prefabricated pile crown
Wall offers several tap holes being connected to injected hole, and the tap hole other end penetrates through inserting paragraph outer wall.
By using above-mentioned technical proposal, by injected hole to when slip casting, slurries can be along slip casting inside prefabricated pile crown
Hole and tap hole are flow on the lateral wall of prefabricated pile crown, so that make to connect between prefabricated pile crown and pile body more consolidates, are mentioned
The intensity and bearing capacity of high pile body.
The present invention is further arranged to: the load section diameter of the prefabricated pile crown is less than the linkage section diameter.
By using above-mentioned technical proposal, when prefabricated pile crown to be inserted into spliced eye, the bottom surface of connecting section is abutted
It is in a shape of big-top and small-bottom by the way that prefabricated pile crown to be arranged in the upper surface of connecting pin, the damage to pile body can not only be reduced
It is bad, meanwhile, connecting section can make the bearing capacity of single pile of pile body increase, and further increase CFG stability.
The present invention is further arranged to: the Steel bar rack includes the first steel loop and the second steel loop of concentric setting, institute
The diameter for stating the first steel loop is greater than the diameter of second steel loop, passes through horizontally disposed company between the first steel loop and the second steel loop
Extension bar is fixed；The lower end of second steel loop is fixedly connected with shank vertically, and the shank is located at the prefabricated pile
The inserting paragraph of head.
The support of prefabricated pile crown can be further enhanced by the Steel bar rack of setting by using above-mentioned technical proposal
Intensity.
The present invention is further arranged to: above first steel loop and parallel with the first steel loop being fixedly connected with third steel
Ring and the 4th steel loop, the third steel loop and the setting of the 4th steel loop concentric, between first steel loop and the third steel loop
It is attached by the reinforcing rod being vertically arranged, is fixed between the third steel loop and the 4th steel loop by fixed link.
It can be further enhanced prefabricated by using above-mentioned technical proposal by the third steel loop and the 4th steel loop of setting
The support strength of pile crown, to improve the bearing capacity of single pile of pile body.
The present invention is further arranged to: being poured in the injected hole and tap hole and between prefabricated pile crown and linkage section
It is marked with cement layer.
By using above-mentioned technical proposal, by the cement layer poured, can make to connect between prefabricated pile crown and pile body
It is more firm.
The present invention is further arranged to: the reinforcing rod is provided with more, and more reinforcing rods are along the vertical of the second steel loop
The distribution of axis circumference array.
By using above-mentioned technical proposal, by more reinforcing rods of setting, can make the first steel loop and the second steel loop it
Between connect it is more stable.
In conclusion advantageous effects of the invention are as follows:
1. the inserting paragraph of prefabricated pile crown, is inserted into the linkage section of pile body, in this way by pile body and prefabricated pile crown by setting
The damage to pile body entirety can be reduced, so that pile body is remained stronger stability, while it is secondary in turn avoid the earthwork
The workload for cutting pile crown with CFG is excavated, construction efficiency is increased substantially and saves project cost；
2. the intensity of prefabricated pile crown can be further enhanced by the Steel bar rack of setting；
3. can make to connect between prefabricated pile crown and pile body more firm by the cement layer poured.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the schematic diagram that the present invention embodies Steel bar rack.
In figure, 1, pile body；11, load section；12, linkage section；121, spliced eye；2, prefabricated pile crown；21, inserting paragraph；22,
Connecting section；23, Steel bar rack；231, the first steel loop；232, the second steel loop；233, third steel loop；234, the 4th steel loop；235, even
Extension bar；236, shank；237, reinforcing rod；238, fixed link；24, concrete block；25, injected hole；26, tap hole.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1, to be disclosed by the invention CFG a kind of, including pile body 1 and 1 upper end of pile body can be fixed on
Prefabricated pile crown 2.
Prefabricated pile crown 2 is prefabricated in advance in factory according to piles with different diameter and user's requirement, then carries out CFG pile driving construction, the earthwork
It can be once excavated to stake top absolute altitude, CFG pile foundation pore-forming and placing concrete are carried out, to concreting to design of pile top absolute altitude
Afterwards, CFG pile precast pile head 2 is inserted into stake.
This avoid the workloads that earthwork secondary excavation and CFG cut pile crown, increase substantially construction efficiency and save
Project cost, while improving CFG bearing capacity of single piles.
Pile body 1 includes load section 11 and the linkage section 12 positioned at 11 one end of load section, the vertical section of pile body 1 are in
It is "T"-shaped, wherein the diameter of linkage section 12 is greater than the diameter of load section 11, opens in one end of linkage section 12 and separate load section 11
Equipped with the spliced eye 121 for prefabricated 2 grafting of pile crown.
Prefabricated pile crown 2 includes being plugged on the inserting paragraph 21 in spliced eye 121 and the connecting section positioned at 21 end of inserting paragraph
22, the vertical section of prefabricated pile crown 2 is " T " shape, wherein the diameter of connecting section 22 is greater than the diameter of inserting paragraph 21.Work as prefabricated pile
First 2 when being plugged in spliced eye 121, and the lower end surface of connecting section 22 is connected to the upper surface of linkage section 12.
As depicted in figs. 1 and 2, prefabricated pile crown 2 includes Steel bar rack 23 and the coagulation for being coated on 23 outside of Steel bar rack
Soil block 24.Steel bar rack 23 includes the first steel loop 231 and the second steel loop 232 being arranged concentrically, and the diameter of the first steel loop 231 is greater than
The diameter of second steel loop 232, the first steel loop 231 and the second steel loop 232 are located in same level, are set by level therebetween
The connecting rod 235 set is fixed.Connecting rod 235 is provided with multiple, and multiple connecting rods 235 are vertical around the second steel loop 232
The distribution of axis circumference array.More root cutting extension bars 236 are fixedly connected in the lower end surface of the second steel loop 232, shank 236 is located at prefabricated
The inserting paragraph 21 of pile crown 2.
By the Steel bar rack 23 of setting, concrete block 24, Steel bar rack 23 and coagulation are coated on the outside of Steel bar rack 23
The prefabricated pile crown 2 of composition is combined between soil block 24, the intensity of prefabricated pile crown 2 can be made bigger, so as to enhance CFG lists
Stake support strength.
The inserting paragraph 21 of prefabricated pile crown 2 is plugged into the spliced eye 121 of connecting pin, the side wall of pile body 1 will not be reduced
Thickness, it is smaller for the whole damaged condition of pile body 1 in this way, while the connecting section 22 of prefabricated pile crown 2 can also improve stake sheet
The bearing capacity of single pile of body 1 improves the stability of ground.
As shown in Fig. 2, in order to further enhance the integral strength of prefabricated pile crown 2, in the fixed company in the top of the first steel loop 231
It is connected to third steel loop 233 and the 4th steel loop 234 in parallel, third steel loop 233 and the setting of 234 concentric of the 4th steel loop,
First steel loop 231 is identical with the diameter of third steel loop 233, and the second steel loop 232 is identical as the diameter of the 4th steel loop 234, first
Several reinforcing rods 237 are fixedly connected between steel loop 231 and third steel loop 233 vertically, thus by the first steel loop 231 and second
Steel loop 232 is fixed together, and level is fixedly connected with several fixations between third steel loop 233 and the 4th steel loop 234
Bar 238, so that the second steel loop 232 and the 4th steel loop 234 are fixed together.
By this kind of structure, prefabricated pile crown 2 can be made further to be reinforced, so as to protect pile body 1 will not
It is damaged.
As shown in Figure 1, the center vertical in prefabricated pile crown 2 offers injected hole 25, offered in the side wall of inserting paragraph 21
Several tap holes 26 being connected with injected hole 25, the outer wall of the other end perforation inserting paragraph 21 of tap hole 26.In injected hole
25 and tap hole 26 in and prefabricated pile crown 2 and linkage section 12 between be cast with cement layer.
By injected hole 25 to prefabricated 2 inside slip casting of pile crown, slurries flow to prefabricated pile along injected hole 25 and tap hole 26
Cement layer is formed on first 2 lateral wall, in this way, cement layer can be more steady by what is connected between prefabricated pile crown 2 and pile body 1
Gu and then improving the intensity and bearing capacity of pile body 1.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. it is CFG a kind of, including pile body (1) and prefabricated pile crown that is prefabricated and being fixed on the upside of the pile body (1)
(2), it is characterized in that: the pile body (1) include load section (11) and be located at load section (11) one end linkage section (12), it is described
The section of pile body (1) is " T " shape, and the diameter of the load section (11) is less than the diameter of the connecting pin, in the linkage section
(12) and position offers spliced eye (121) far from one end of load section (11), and the prefabricated pile crown (2) is plugged on the grafting
In hole (121).
2. a kind of CFG according to claim 1, it is characterized in that: the prefabricated pile crown (2) it is vertical section it is " T " shape,
Including the inserting paragraph (21) being connected in spliced eye (121), and it is located at the connecting section (22) of inserting paragraph (21) end；It is described prefabricated
Pile crown (2) includes Steel bar rack (23) and the concrete block (24) being wrapped on the outside of Steel bar rack (23).
3. a kind of CFG according to claim 2, it is characterized in that: being offered at the vertical center of the prefabricated pile crown (2)
Injected hole (25), inserting paragraph (21) side wall offer several tap holes (26) being connected to injected hole (25), and described point
Discharge orifice (26) other end penetrates through inserting paragraph (21) outer wall.
4. a kind of CFG according to claim 2, it is characterized in that: load section (11) diameter of the prefabricated pile crown (2) is small
In the linkage section (12) diameter.
5. a kind of CFG according to claim 2, it is characterized in that: the Steel bar rack (23) includes what concentric was arranged
The diameter of first steel loop (231) and the second steel loop (232), first steel loop (231) is greater than the straight of second steel loop (232)
Diameter is fixed between the first steel loop (231) and the second steel loop (232) by horizontally disposed connecting rod (235)；Described second
The lower end of steel loop (232) is fixedly connected with shank (236) vertically, and the shank (236) is located at the prefabricated pile crown (2)
Inserting paragraph (21).
6. a kind of CFG according to claim 5, it is characterized in that: above first steel loop (231) and with the first steel loop
(231) parallel to be fixedly connected with third steel loop (233) and the 4th steel loop (234), the third steel loop (233) and the 4th steel loop
(234) concentric is arranged, the reinforcing rod between first steel loop (231) and the third steel loop (233) by being vertically arranged
(237) it is attached, is fixed between the third steel loop (233) and the 4th steel loop (234) by fixed link (238).
7. a kind of CFG according to claim 3, it is characterized in that: in the injected hole (25) and tap hole (26), with
And cement layer is cast between prefabricated pile crown (2) and linkage section (12).
8. a kind of CFG according to claim 6, it is characterized in that: the reinforcing rod (237) is provided with more, more add
Strong bar (237) is distributed along the vertical axes circumference array of the second steel loop (232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238678.8A CN109137900A (en) | 2018-10-23 | 2018-10-23 | It is CFG a kind of |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238678.8A CN109137900A (en) | 2018-10-23 | 2018-10-23 | It is CFG a kind of |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109137900A true CN109137900A (en) | 2019-01-04 |
Family
ID=64809187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811238678.8A Pending CN109137900A (en) | 2018-10-23 | 2018-10-23 | It is CFG a kind of |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109137900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164854A (en) * | 2022-02-14 | 2022-03-11 | 中国长江三峡集团有限公司 | Composite cylinder structure |
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| CN104695424A (en) * | 2015-03-18 | 2015-06-10 | 烟台建华管桩有限公司 | Prefabricated hollow pile cap for composite foundation and fixing method thereof |
| CN204676525U (en) * | 2015-03-30 | 2015-09-30 | 邓亚光 | High strength rigidity soil compaction composite pile |
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| CN106917402A (en) * | 2017-03-20 | 2017-07-04 | 陈甫 | A kind of CFG pile precast piles head and CFG pile construction methods |
| CN206752449U (en) * | 2017-05-22 | 2017-12-15 | 青岛瑞源工程集团有限公司 | It is a kind of to be used for flabbiness ground strengthened composite pile |
| CN207659957U (en) * | 2017-12-08 | 2018-07-27 | 北京民佳新型建材有限公司 | Prefabricated pile |
| CN209194517U (en) * | 2018-10-23 | 2019-08-02 | 北京市城远市政工程有限责任公司 | It is CFG a kind of |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040110387A (en) * | 2003-06-19 | 2004-12-31 | (주)피에스테크 | Structure and method reinforcing the unbreakable head of high-stress concrete pile |
| CN101775803A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Mushroom-shaped mixed composite pile capable of effectively controlling settlement and construction method |
| KR20090069148A (en) * | 2009-04-07 | 2009-06-29 | 최기화 | Prefab apparatus for reinforcing head of pile |
| CN104695424A (en) * | 2015-03-18 | 2015-06-10 | 烟台建华管桩有限公司 | Prefabricated hollow pile cap for composite foundation and fixing method thereof |
| CN204676525U (en) * | 2015-03-30 | 2015-09-30 | 邓亚光 | High strength rigidity soil compaction composite pile |
| KR101681567B1 (en) * | 2015-11-18 | 2016-12-12 | 박강호 | Composite Pile with PHC Pile and Steel Pipe, and Constructing Method thereof |
| CN205369225U (en) * | 2015-12-28 | 2016-07-06 | 苏交科集团股份有限公司 | Prefabricated pile cover |
| CN106917402A (en) * | 2017-03-20 | 2017-07-04 | 陈甫 | A kind of CFG pile precast piles head and CFG pile construction methods |
| CN206752449U (en) * | 2017-05-22 | 2017-12-15 | 青岛瑞源工程集团有限公司 | It is a kind of to be used for flabbiness ground strengthened composite pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164854A (en) * | 2022-02-14 | 2022-03-11 | 中国长江三峡集团有限公司 | Composite cylinder structure |
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