CN205116162U - Pile head enlarges drilling bored concrete pile clad steel and protects a section of thick bamboo - Google Patents
Pile head enlarges drilling bored concrete pile clad steel and protects a section of thick bamboo Download PDFInfo
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- CN205116162U CN205116162U CN201520925881.8U CN201520925881U CN205116162U CN 205116162 U CN205116162 U CN 205116162U CN 201520925881 U CN201520925881 U CN 201520925881U CN 205116162 U CN205116162 U CN 205116162U
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Abstract
The utility model relates to a pile head enlarges drilling bored concrete pile clad steel and protects a section of thick bamboo mainly protects a section of thick bamboo by interior steel pipe and protects a section of thick bamboo with outer steel pipe and constitutes, and interior steel pipe protects a section of thick bamboo for cylindrical, protects 4 slime flux holes seting up the symmetric distribution in the middle part of the section of thick bamboo, is equipped with the closed hoop limiting plate below the slime flux hole, outer steel pipe protects a section of thick bamboo and is the taper shape, mainly by roof, bottom plate, closed hoop, floor, location crown plate and down the cutting plate forms, set up the roof opening on the roof, it is articulated that bottom plate and outer steel pipe protect a section of thick bamboo, the location crown plate lies in bottom plate upper portion, lower cutting plate lies in the bottom plate lower part, the closed hoop comprises two semi -circular steel sheets, protects tin continuously through floor and outer steel pipe, the closed hoop other end is provided with the butt joint hole that is used for passing the inserted bar. The utility model relates to a structure construction convenience, a process of cutting in later stage has not only been left out in the emission and the super utilization who irritates the concrete that can draw the guiding mud thick liquid in a flexible way, has avoided the later stage to cut the pile body destruction that the stake caused, and construction speed is fast moreover, cost greatly reduced.
Description
Technical field
The utility model relates to a kind of pile crown and expands bored pile clad steel casing, belongs to foundation treatment engineering field, is applicable to structure foundation process, pile foundation construction.
Background technology
Bored pile conventional in current engineering has two kinds of forms, holing with slurry wall protection castinplace pile and bushing type bored pile.Holing with slurry wall protection filling pile construction is by after rig location and installation; bury casing underground at required bore position and prevent hole wall collapse; use mud protection hole wall during boring, carry out hole, placement reinforcing cage, concreting, concrete curing clearly after boring, carry out cutting a stake to super filling part concrete.Bushing type bored pile construction is by auger location and installation, hole after press-in steel sleeve, carry out retaining wall by steel sleeve, bushing type bored pile is without the need to carrying out hole operation clearly, but bushing type bored pile construction still needs after building to carry out cutting stake to the concrete of super filling part.
Bored pile construction noise is little, is applicable to build large diameter pile, and little by the influence of topography; But bored pile pile quality is large by construction infection, concrete quality difficulty controls, and pile body is built and needed to carry out cutting a stake to super filling part after operation completes and easily damage pile body, and Stake head handling is time-consuming.
In sum, although existing bored pile achieves good construction effect under suitable engineering specifications, existing bored pile construction method need process pile crown, time-consuming.Given this, according to current actual demands of engineering and technical condition, need a kind of easy construction of invention badly, ambient influnence is little, effectively can avoid the device for treating pile head of the Novel drilling castinplace pile cutting stake.
Summary of the invention
The purpose of this utility model is to improve the concrete utilization rate of building bored pile, reduces super filling part Stake head handling, avoids the formation of super filling part when bored pile is built, and can save the super part of filling with of pile crown and cut stake operation.
To achieve these goals, the utility model have employed following technical scheme:
A kind of pile crown expands bored pile clad steel casing, it is characterized in that, described pile crown expands bored pile clad steel casing primarily of interior steel pipe casing and outer steel pipe casing composition, interior steel pipe casing is cylindrical, offer 4 symmetrical slime flux holes in the middle part of casing, below slime flux hole, be provided with closed hoop limiting plate; Outer steel pipe casing conically, form primarily of top board, base plate, closed hoop, floor, location ring flat-plate and lower cutting plate, top board arranges plate top openings, base plate and outer steel pipe casing hinged, location ring flat-plate is positioned at base plate top, and lower cutting plate is positioned at base plate bottom, and closed hoop is made up of two semi-circular sheet steel, be connected with outer steel pipe casing by floor, the closed hoop other end is provided with for the butt hole through inserted link.
Further, the position in slime flux hole is arranged on a top mark eminence, and slime flux hole height is 100mm.
Closed hoop and floor hinged, extract by inserted link the folding realizing closed hoop.
The utility model has following feature and beneficial effect:
(1) the utility model adopts two steel pipe casing, interior steel pipe casing is provided with slime flux hole, slime flux hole is positioned at a top mark eminence, after closed hoop folding, expansion pile head is formed in the cavity super filling part concrete being discharged to the squeezed formation of outer steel pipe casing from interior steel pipe casing, what not only eliminate the later stage cuts stake operation, avoids the later stage to cut the pile damage that stake causes, and speed of application is fast.
(2) adopt two steel pipe casing, in filling concrete process, the mud squeezed out, first flows into outer steel pipe casing by interior steel pipe casing streamer hole, then enters slurry transportation equipment, collects mud very convenient, avoids the mud contamination that mud causes in earth's surface overflow.
(3) closed hoop is connected with outer steel pipe casing by floor by two semi-circular sheet steel, and the other end arranges butt hole and communicates with inserted link, is realized the opening and closing of closed hoop by the plug of inserted link.The discharge of mud can be guided flexibly to fill with concrete inflow with super.
Accompanying drawing explanation
Fig. 1 is that pile crown expands bored pile clad steel casing device stereogram;
Fig. 2 is that pile crown expands steel pipe casing figure in bored pile clad steel casing device;
Fig. 3 is that pile crown expands the outer steel pipe casing sectional view of bored pile clad steel casing device;
Fig. 4 is that pile crown expands bored pile construction profile;
Fig. 5 is that pile crown expands bored pile pile figure;
Fig. 6 is construction flow chart;
In figure: steel pipe casing in 1-, the outer steel pipe casing of 2-, 3-inserted link, 4-plate top openings, 5-butt hole, 6-closed hoop, 7-floor, 8-closed hoop limiting plate, 9-top board, 10-base plate, 11-locates ring flat-plate, cutting plate under 12-, 13-slime flux hole, 14-reinforcing bar, 15-PVC sleeve pipe, 16-concrete, 17-mud, 18-foundation soil, 19-expansion pile head, 20-pile body.
Detailed description of the invention
Present embodiment emphasis sets forth the embodiment that the utility model relates to structure.
As shown in Figure 1, pile crown expansion bored pile clad steel casing construction equipment forms primarily of interior steel pipe casing 1 and outer steel pipe casing 2.According to Fig. 2, interior steel pipe casing 1 is cylindrical, and internal diameter is 600mm, selects 12mm thick, and strength grade is that Q235 hot-rolled coil rolls and forms.Interior steel pipe casing 1 tube wall offers 4 symmetrical slime flux holes 13 along ring week, and perforate is highly 100mm, has 4 closed hoop limiting plates 8 to be used for locating to closed hoop near slime flux hole accordingly.
With reference to shown in Fig. 1 and Fig. 3, conically, employing strength grade is Q235 to outer steel pipe casing 2, and thickness is that the hot-rolled coil of 15mm rolls, is welded.Outer steel pipe casing forms primarily of top board 9, base plate 10, closed hoop 6, floor 7, location ring flat-plate 11, lower cutting plate 12, butt hole 5 and inserted link 3.Top board 9 diameter is 1400mm, and internal diameter is identical with the external diameter of interior steel pipe casing, and top board 9 is provided with a plate top openings 4, is convenient to the plug of inserted link 3 and mud plant to the collection of mud.Base plate 10 is hinged with outer steel pipe casing 2, and base plate 10 diameter is 1000mm, and internal diameter is identical with the external diameter of interior steel pipe casing 1.Location ring flat-plate 11 is annular plate, and width is 100mm, is positioned at base plate 10 top, and effect is the motion limiting base plate 10 in the horizontal direction, and lower cutting plate 12 welds, for incision soil body during outer steel pipe shield-tube embedment along the angle of outer steel pipe casing 2.Closed hoop 6 is connected with outer steel pipe casing 2 by floor 7 by two semi-circular sheet steel, and floor 7 adopts hot rolled steel plate, thick 12mm, and strength grade is Q345.Closed hoop 6 internal diameter is identical with the external diameter of interior steel pipe casing, and the other end arranges butt hole 5 and communicates with inserted link 3, and inserted link 3 upper diameter is greater than base diameter, and closed hoop 6 realizes the folding of closed hoop 6 by the plug of inserted link 3.
Utilize vibrating hammer to set in place by interior steel pipe casing 1, steel pipe casing 1 in cleaning, guarantee that slime flux hole 13 is positioned at design of pile top absolute altitude place, bury outer steel pipe casing 2 underground, outer steel pipe casing 2 is located by closed hoop limiting plate 8, checks verticality and the stability of steel pipe casing.After outer and inner tube casing sets, usual manner is adopted to carry out bored pile construction.
After bored pile boring, extract inserted link 3 open closed ring 6 as shown in Figure 4, mud 17 just, in the cavity that the slime flux hole 13 of interior steel pipe casing 1 flows to outer steel pipe casing extruding formation, opens the plate top openings 4 mud plant process mud 17 on top board 9.After mud conditioning completes, insertion inserted link 3 cuts out closed hoop 6 and carries out next step operation.
What Fig. 5 represented is that pile crown expands bored pile pile figure, and after cast-in-place pile concrete 16 has been built, super concrete of filling with part forms expansion pile head 19 on stake top, and when super filling part concrete is inadequate, the concrete utilizing job site to be scattered tamps.In work progress, reinforcing bar 14 more than design of pile top absolute altitude puts PVC casing protection reinforcing bar.
Fig. 6 is the utility model construction flow chart; Pile crown expands bored pile construction method, comprises the following steps:
1) preparation of construction: before construction, reply construction plant is carried out smooth, reasonable Arrangement pioneer road and sequence of construction, position according to the position of pile foundation drawing to each and carry out mark.
2) two steel pipe casing is buried underground: according to location excavation casing foundation ditch, foundation ditch diameter should be more smaller than outer steel pipe casing 2 external diameter, two steel pipe casing extruding is imbedded, the position in slime flux hole 13 is just positioned at stake top n ear, shield-tube embedment completes rear perimeter edge clay and rams packing in fact, check the plan-position of casing in compacting process at any time, adjust immediately if any off normal, until its outside is tamped, casing is steady.
3) slurrying: use original soil pulping in cohesive soil, during pore-forming in hole injected clear water, the soil cut when rig rotates bits revolve mixes with water, form mud; In other soil bodys, slurrying should select highly plastic clay or swell soil; Proportion design should be carried out according to situations such as construction machinery, construction technology and the soil properties of passing through soil layer when preparing mud.
4) the clear hole of pore-forming: spiral-digging pore utilizes unit head to rotate the bit cutting soil body being inlaid with bucket tooth, in drilling process, adopts mud off drilling process.When collecting mud, extract inserted link 3, mud 17 flows into outer steel pipe casing 2 by the slime flux hole 13 on interior steel pipe casing 1, then enters slurry transportation equipment by plate top openings 4.After clear hole completes, insert inserted link and close closed hoop.
5) install reinforcing cage: after fabrication of reinforcing cage completes, adopts crane to lay, and ensures that reinforcing cage is vertical when transferring, and forbids pendulum impact hole wall.
6) build underwater concrete: pouring underwater concrete adopts tremie method, using the steel pipe that the is tightly connected passage as concrete conveyance, isolation environment water makes it not contact with concrete.During concreting, darker conduit should be kept, reduce filling concrete speed; When concrete surface enters more than mouth 4m at the bottom of reinforcement cage skeleton, improve conduit, reduce the buried depth of conduit, in filling process, the buried depth controlling conduit mouth is 2m ~ 6m.
7) Stake head handling: concrete is super fill with about 1m after, extract inserted link open closed ring, super part concrete of filling with all flows out formation expansion pile head, extract outer steel pipe casing, if when expansion pile head absolute altitude does not arrive stake top mark height, the concrete that employing is scattered or the soil body tamp, and finally extract interior steel pipe casing.
Claims (4)
1. a pile crown expands bored pile clad steel casing, it is characterized in that, described pile crown expands bored pile clad steel casing primarily of interior steel pipe casing and outer steel pipe casing composition, interior steel pipe casing is cylindrical, offer 4 symmetrical slime flux holes in the middle part of casing, below slime flux hole, be provided with closed hoop limiting plate; Outer steel pipe casing conically, form primarily of top board, base plate, closed hoop, floor, location ring flat-plate and lower cutting plate, top board arranges plate top openings, base plate and outer steel pipe casing hinged, location ring flat-plate is positioned at base plate top, and lower cutting plate is positioned at base plate bottom, and closed hoop is made up of two semi-circular sheet steel, be connected with outer steel pipe casing by floor, the closed hoop other end is provided with for the butt hole through inserted link.
2. pile crown according to claim 1 expands bored pile clad steel casing, it is characterized in that the position in slime flux hole is arranged on a top mark eminence.
3. pile crown according to claim 1 expands bored pile clad steel casing, it is characterized in that slime flux hole height is 100mm.
4. pile crown according to claim 1 expands bored pile clad steel casing, it is characterized in that closed hoop and floor hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925881.8U CN205116162U (en) | 2015-11-19 | 2015-11-19 | Pile head enlarges drilling bored concrete pile clad steel and protects a section of thick bamboo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925881.8U CN205116162U (en) | 2015-11-19 | 2015-11-19 | Pile head enlarges drilling bored concrete pile clad steel and protects a section of thick bamboo |
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| CN205116162U true CN205116162U (en) | 2016-03-30 |
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| CN201520925881.8U Active CN205116162U (en) | 2015-11-19 | 2015-11-19 | Pile head enlarges drilling bored concrete pile clad steel and protects a section of thick bamboo |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878019A (en) * | 2020-07-03 | 2020-11-03 | 浙江中正岩土技术有限公司 | Cast-in-situ bored pile construction method |
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- 2015-11-19 CN CN201520925881.8U patent/CN205116162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878019A (en) * | 2020-07-03 | 2020-11-03 | 浙江中正岩土技术有限公司 | Cast-in-situ bored pile construction method |
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Address after: 610041 area a, 8th floor, No.90, West 1st section of 2nd Ring Road, Chengdu, Sichuan Patentee after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610041 area a, 8th floor, No.90, West 1st section of 2nd Ring Road, Chengdu, Sichuan Patentee before: SICHUAN JIAOTOU CONSTRUCTION ENGINEERING Co.,Ltd. |
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Address after: 610047 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610041 area a, 8th floor, No.90, West 1st section of 2nd Ring Road, Chengdu, Sichuan Patentee before: Sichuan Communications Construction Group Co.,Ltd. |