CN206319347U - A kind of steel pipe reinforces piling strtucture - Google Patents
A kind of steel pipe reinforces piling strtucture Download PDFInfo
- Publication number
- CN206319347U CN206319347U CN201621386514.6U CN201621386514U CN206319347U CN 206319347 U CN206319347 U CN 206319347U CN 201621386514 U CN201621386514 U CN 201621386514U CN 206319347 U CN206319347 U CN 206319347U
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- pile
- steel
- pipe
- steel pipe
- pile foundation
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Abstract
The utility model provides a kind of steel pipe and reinforces piling strtucture, including the pile foundation body with defect area, drilling is vertically offered in pile foundation body, steel-pipe pile is provided with drilling, steel-pipe pile passes through defect area, and the upper and lower ends of steel-pipe pile extend defect area upper and lower ends complete pile foundation at least 1m respectively, steel-pipe pile includes seamless steel pipe and the reinforcing bar being arranged in seamless steel pipe, fixed between seamless steel pipe and reinforcing bar by pouring micro-expansion cement mortar.The problem of there is gap, local pile body breaking to solve existing hole stake pile body, and have slag inclusion, it is necessary to carry out consolidation process, and can not more efficiently solve the method for above-mentioned problem at this stage.The utility model belongs to pile foundation construction field.
Description
Technical field
The utility model is related to a kind of ruggedized construction for solving defect of pile foundation, belongs to pile foundation construction field.
Background technology
At present, in project construction, after pile foundation construction is finished, detected through live core pulling, indivedual hole stake pile bodies, which have, to be less than
50cm gap, local pile body breaking, and have slag inclusion, detection unit is determined as the stake of three classes, it is necessary to carry out consolidation process, but existing rank
Section does not have the pile foundation reinforcement method after more effective pile.
The content of the invention
The purpose of this utility model is：A kind of steel pipe is provided and reinforces piling strtucture, is had to solve existing hole stake pile body
Gap, local pile body breaking, and have slag inclusion, it is necessary to carry out consolidation process, and can not solve more efficiently at this stage
The problem of method of above-mentioned problem.
To solve the above problems, intend reinforcing piling strtucture, including the pile foundation sheet with defect area using such a steel pipe
Vertically offer drilling in body, pile foundation body, be provided with steel-pipe pile in drilling, steel-pipe pile is through defect area, and steel-pipe pile
Upper and lower ends extend defect area upper and lower ends complete pile foundation at least 1m respectively, and steel-pipe pile includes seamless steel pipe and is arranged at seamless steel
Reinforcing bar in pipe, is fixed between seamless steel pipe and reinforcing bar by pouring micro-expansion cement mortar.
In foregoing piling strtucture, the upper end that the top construction of pile foundation body has reinforcing bar in cushion cap, steel-pipe pile anchors into cushion cap not
Less than 35d；
In foregoing piling strtucture, the specification of seamless steel pipe is external diameter 127mm, wall thickness 6mm, and the specification of reinforcing bar is C HRB400
A diameter of 25mm, irrigates therebetween M35 micro-expansion cement mortars, and steel-pipe pile extexine is painted with red lead anti-corrosive paint.
Compared with prior art, the ruggedized construction fast and effeciently can be added to unqualified or second-rate pile foundation
Gu processing, solving existing hole stake pile body has gap, local pile body breaking, and has slag inclusion, and existing method can not effectively add
Gu the problem of, construction method is easy and effective, with low cost, and the process-cycle is short, the west that the solution cavity that is particularly suitable for use in, fluid bowl are more developed
Southern area.
Brief description of the drawings
Fig. 1 is the main view cross-sectional view that steel pipe described in the utility model reinforces piling strtucture；
Fig. 2 is the top view of steel-pipe pile.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, the utility model will be made into one below
It is described in detail on step ground.
Embodiment：
Referring to Figures 1 and 2, the present embodiment provides a kind of steel pipe and reinforces piling strtucture, including the pile foundation with defect area 11
Vertically offered in body 1, pile foundation body 1 and steel-pipe pile 2 is provided with drilling 12, drilling 12, steel-pipe pile 2 passes through defect area
11, and the upper and lower ends of steel-pipe pile 2 extend the upper and lower ends of defect area 11 complete pile foundation at least 1m respectively, steel-pipe pile 2 includes seamless
Steel pipe 21 and the reinforcing bar 22 being arranged in seamless steel pipe 21, the specification of seamless steel pipe 21 is external diameter 127mm, wall thickness 6mm, reinforcing bar 22
Specification be a diameter of 25mm of C HRB400, M35 micro-expansion cement mortars 23, the extexine brushing of steel-pipe pile 2 are irrigated therebetween
There is red lead anti-corrosive paint, the upper end that the top construction of pile foundation body 1 has reinforcing bar 22 in cushion cap 3, steel-pipe pile 2 anchors into the 40d of cushion cap 3.
The construction method of above-mentioned piling strtucture is as follows：
Step one, positioning drilling 12：12 hole positions of drilling are determined in the upper end of pile foundation, rig is moved in hole position and bored
Hole, boring positioning will accurately, and rig installs steady firm, and support level, vertical shaft is vertical, accomplishes the line of three summit one, i.e. hole position, stands
Axle, overhead traveling crane on the same line, are not offset vertically with ensureing to drill.Drilling will be stablized, and creep into always untill the super 1m of full pile,
Meanwhile, extravasating hole is processed in fault location, extravasating hole is in quincuncial arrangement, and per 4 extravasating holes of pile, aperture is 100mm；
Drilling 12 localization method be：
When stake footpath is 1m, five summits being distributed into regular pentagon centered on the stake heart are chosen in pile foundation upper end, each
Summit is 0.31m to the distance of the stake heart, and five selected summits are the center of circle of five drilling 12；
Stake footpath be 1.2m when, pile foundation upper end choose centered on the stake heart into equilateral triangle be distributed three summits and into
In four summits of square distribution, three summits of equilateral triangle distribution, each summit is to the distance of the stake heart
In 0.25m, four summits of square distribution, each summit to the distance of the stake heart is 0.25m, 7 selected summits
The center of circle of as 7 drilling 12；
When stake footpath is 1.4m, eight summits being distributed into octagon centered on the stake heart are chosen in pile foundation upper end, often
Individual summit is 0.51m to the distance of the stake heart, and eight selected summits are the center of circle of eight drilling 12；
Stake footpath be 1.8m when, pile foundation upper end choose centered on the stake heart into octagon be distributed eight summits and into
In seven summits of positive heptagon distribution, eight summits of octagon distribution, each summit is to the distance of the stake heart
In 0.61m, seven summits of positive heptagon distribution, each summit to the distance of the stake heart is 0.30m, 15 selected summits
The center of circle of as 15 drilling 12；
When stake footpath is 1.6m, 2.0m and 2.2m, the two composition octagons centered on the stake heart are chosen in pile foundation upper end
Eight summits of distribution, 16 selected summits are the center of circle of 16 drilling 12, when stake footpath is 1.6m, one of which positive eight
In the shape of side, each summit to the distance of the stake heart is in 0.30m, another group of octagon, and the distance of each summit to the stake heart is equal
For 0.61m；When stake footpath is 2.0m, in one of which octagon, each summit to the distance of the stake heart is 0.50m, another group
In octagon, each summit is 0.81m to the distance of the stake heart；When stake footpath is 2.2m, in one of which octagon, each
Summit is in 0.508m, another group of octagon to the distance of the stake heart, and each summit is 0.91m to the distance of the stake heart.
Step 2 high pressure clear water rotary spray wash：Put down high-pressure injector respectively from each hole, control high-pressure injection
Device up and down reciprocatingly carries out high-pressure rotary injection cutting cleaning, sprays pressure 20-26MPa, discharge capacity 70-90L/min, rotary speed
20r/min, lifts speed 10cm/min, and cutting clean range respectively increases 0.5m up and down from defective section, and a hole is cleaned and another
When there is water spilling in one hole, show that rejected region has been got through, shift to other holes, until pile foundation upper end drilling 12 is all got through, then,
Be pressed into clear water, pile body discharged using water circulation just waste residue, when delivery port water by it is turbid become clear when, then change other holes and locate in turn
Reason, until when all pile foundation upper end drilling current are all clear water, cutting cleaning terminates；
Step 3 installs steel-pipe pile 2：Steel-pipe pile 2 is vertically put into the drilling 12 being drilled, steel-pipe pile passes through defect area
The reinforcing bar 22 inserted behind domain on complete pile body at least 1m, steel-pipe pile 2 need to anchor into cushion cap 3, and inner sleeve is needed if length is longer
It is attached welding, steel pipe pile body without faying surface to be advisable；
Step 4 apertures mud jacking:After cutting cleaning terminates, mud jacking is carried out by the extravasating hole got out on former pile defect
Processing, slip casting raw material is cement mortar, and cement mortar uses strength grade to be formulated for 42.5 portland cement with clear water, cement
The slurries ratio of mud 1 ~ 1.2, slurries are prepared by first dilute rear dense principle, then add waterproofing agent by the 1% of the mixed amount of water, to increase water
The workability and mobility of mud, leave test specimen sampling when preparing cement slurry, quality will be ensured by preparing liquid and additive, and with
When measurement dress liquor ratio weight, it is ensured that concentration of slurry reaches design requirement, and slurries should be by 14*14 ~ 18*18 mesh sieves hole, in order to avoid be mixed into
Bag of cement is considered to be worth doing or other debris, and preparing dress liquid should be finished within the presetting period.
High-pressure injection is repeated in the range of defective section with water under high pressure slurry liquid, make the rubble of each stake defective section, rock, in
Coarse sand is thoroughly mixed with cement grout, and grouting pressure is according to the foundation strength of supporting course and the compression strength of concrete piles
It is fixed, the foundation strength of supporting course and the compression strength of concrete piles need to be less than, by taking embedded rock pile as an example, filling pressure is 7-10MPa, pressure
Dress stabilization time is 8-12min, during the bored grouting of pile foundation upper end, by other hole plugs, grouting pressure increase 2-3MPa, voltage stabilizing
After 5min, judged whether to stop slip casting according to mud jacking resistance；Or when grout in other holes, stop slip casting.
Claims (3)
1. a kind of steel pipe reinforces piling strtucture, including the pile foundation body (1) with defect area (11), it is characterised in that：Pile foundation sheet
Vertically offered in body (1) and steel-pipe pile (2) is provided with drilling (12), drilling (12), steel-pipe pile (2) passes through defect area
, and the upper and lower ends of steel-pipe pile (2) extend defect area (11) upper and lower ends complete pile foundation at least 1m, steel-pipe pile (2) respectively (11)
Including seamless steel pipe (21) and the reinforcing bar (22) being arranged in seamless steel pipe (21), lead between seamless steel pipe (21) and reinforcing bar (22)
Cross and pour micro-expansion cement mortar (23) fixation.
2. a kind of steel pipe reinforces piling strtucture according to claim 1, it is characterised in that：The top construction of pile foundation body (1)
The upper end for having reinforcing bar (22) in cushion cap (3), steel-pipe pile (2) anchors into cushion cap (3) no less than 35d.
3. a kind of steel pipe reinforces piling strtucture according to claim 1, it is characterised in that：The specification of seamless steel pipe (21) is outer
Footpath 127mm, wall thickness 6mm, the specification of reinforcing bar (22) is a diameter of 25mm of C HRB400, and M35 microdilatancy water is irrigated therebetween
Cement mortar (23), steel-pipe pile (2) extexine is painted with red lead anti-corrosive paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386514.6U CN206319347U (en) | 2016-12-16 | 2016-12-16 | A kind of steel pipe reinforces piling strtucture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386514.6U CN206319347U (en) | 2016-12-16 | 2016-12-16 | A kind of steel pipe reinforces piling strtucture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206319347U true CN206319347U (en) | 2017-07-11 |
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ID=59267977
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621386514.6U Expired - Fee Related CN206319347U (en) | 2016-12-16 | 2016-12-16 | A kind of steel pipe reinforces piling strtucture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206319347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759559A (en) * | 2016-12-16 | 2017-05-31 | 中建四局第建筑工程有限公司 | A kind of steel pipe reinforces piling strtucture and its construction method |
| CN110847047A (en) * | 2019-11-21 | 2020-02-28 | 中交第二航务工程局有限公司 | Open sea bare rock trestle construction method |
-
2016
- 2016-12-16 CN CN201621386514.6U patent/CN206319347U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759559A (en) * | 2016-12-16 | 2017-05-31 | 中建四局第建筑工程有限公司 | A kind of steel pipe reinforces piling strtucture and its construction method |
| CN110847047A (en) * | 2019-11-21 | 2020-02-28 | 中交第二航务工程局有限公司 | Open sea bare rock trestle construction method |
| CN110847047B (en) * | 2019-11-21 | 2021-11-26 | 中交二航局第一工程有限公司 | Open sea bare rock trestle construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20211216 |