CN106759559A - A kind of steel pipe reinforces piling strtucture and its construction method - Google Patents
A kind of steel pipe reinforces piling strtucture and its construction method Download PDFInfo
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- CN106759559A CN106759559A CN201611168099.1A CN201611168099A CN106759559A CN 106759559 A CN106759559 A CN 106759559A CN 201611168099 A CN201611168099 A CN 201611168099A CN 106759559 A CN106759559 A CN 106759559A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
Abstract
The present invention provides a kind of steel pipe and reinforces piling strtucture and its construction method, its piling strtucture includes 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, is fixed by pouring micro-expansion cement mortar between seamless steel pipe and reinforcing bar.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 the method that can not more efficiently solve the problems, such as above-mentioned problem at this stage.The invention belongs to pile foundation construction field.
Description
Technical field
The present invention relates to a kind of defect of pile foundation solution, belong 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 are less than
The gap of 50cm, local pile body breaking, and have slag inclusion, detection unit is judged to 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
It is an object of the invention to：A kind of steel pipe is provided and reinforces piling strtucture and its construction method, to solve existing hole stake
Pile body has gap, local pile body breaking, and has slag inclusion, it is necessary to carry out consolidation process, and can not have more at this stage
The method that effect ground solves the problems, such as above-mentioned problem.
To solve the above problems, intend being reinforced using such a steel pipe the construction method of piling strtucture, including：
Step one, positioning drillings：Determine drilling hole position in the upper end of pile foundation, rig is moved to and drilled in hole position, drilling is fixed
Position is accurate, and rig is installed steadily firmly, and support level, vertical shaft is vertical, accomplishes that the line of three summit one, i.e. hole position, vertical shaft, overhead traveling crane exist
On same straight line, to ensure that drilling does not offset vertically.Drilling will be stablized, and creep into always to the super 1m of full pile, meanwhile, lacking
Place's processing extravasating hole is fallen into, extravasating hole is in quincuncial arrangement, and per 4 extravasating holes of pile, aperture is 100mm；
Step 2 high pressure clear water rotary spray wash：High-pressure injector is put down respectively from each hole, on control high-pressure injector
High-pressure rotary injection cutting cleaning is back and forth carried out down, sprays pressure 20-26MPa, discharge capacity 70-90L/min, rotary speed 10-
28r/min, lifts speed 10-15cm/min, and cutting clean range respectively increases 0.5m up and down from defective section, until pile foundation upper end is bored
Hole is all got through, and then, press-in clear water is using water circulation just waste residue discharge pile body；
Step 3 installs steel-pipe pile：Steel-pipe pile includes seamless steel pipe and the reinforcing bar being arranged in steel pipe, and perfusion is micro- swollen in steel pipe
Swollen cement mortar, the steel-pipe pile extexine for processing carries out antirust treatment, steel-pipe pile is vertically put into the drilling being drilled, steel pipe
By inserting complete pile body at least 1m after defect area, the reinforcing bar on steel-pipe pile need to anchor into cushion cap no less than 35d for stake；
Step 4 apertures mud jacking:After cutting cleaning terminates, carried out at mud jacking by the extravasating hole got out on former pile defect
Reason.
In the step of foregoing construction method two, the lance lift speed of high-pressure injector is 10cm/min, and rotary speed is
20 turns/min, a hole cleaned and another Kong Youshui overflow when, show that rejected region has been got through, other holes are shifted to, until stake
The drilling of base upper end is all got through；
In the step of foregoing construction method two, after being connected between the drilling of pile foundation upper end, clear water is pressed into, using water circulation just waste residue
Discharge pile body, when the water of delivery port is clear by turbid change, then changes other holes wheel stream process, until all of pile foundation upper end drilling current
When being all clear water, cutting cleaning terminates.
In the step of foregoing construction method three, pipe piling bar is by external diameter 127mm, the seamless steel pipe of wall thickness 6mm and a C
The reinforcing bar composition of HRB400 a diameter of 25, interior perfusion M35 micro-expansion cement mortars, the steel-pipe pile extexine brushing red lead for processing
Antirust paint；Inner sleeve is needed to be attached welding if length is more long, steel pipe pile body is advisable with without faying surface.
Slip casting raw material in the step of foregoing construction method four is cement mortar, cement mortar use strength grade for 42.5 silicon
Acid salt cement is formulated with clear water, the cement grout ratio of mud 1 ~ 1.2, and slurries are prepared by first dilute rear dense principle, then mixed by water
1% addition waterproofing agent of consumption, to increase the workability and mobility of cement mortar, leaves test specimen sampling when preparing cement slurry, match somebody with somebody
Liquid processed and additive will ensure quality, and measurement dress liquor ratio weight at any time, it is ensured that concentration of slurry reaches design requirement, and slurries should pass through
14*14 ~ 18*18 mesh sieves hole, in order to avoid being mixed into bag of cement bits or other debris, preparing dress liquid should be finished within the presetting period；
In the step of foregoing construction method four, high-pressure injection is repeated in the range of defective section with water under high pressure slurry liquid, makes each
The stake rubble of defective section, rock, medium coarse sand and cement grout are thoroughly mixed, grouting pressure according to the foundation strength of supporting course and
Depending on the compression strength of concrete piles, the foundation strength of supporting course and the compression strength of concrete piles, by taking embedded rock pile as an example, note need to be less than
Dress pressure is 7-10MPa, press-fits stabilization time for 8-12min, during the bored grouting of pile foundation upper end, by other hole plugs, slip casting pressure
Power increases 2-3MPa, after voltage stabilizing 5min, is judged whether to stop slip casting according to mud jacking resistance；Or when grout in other holes, stop
Slip casting.
In the step of foregoing construction method one, drilling and positioning method is：
When stake footpath is 1m, five summits into regular pentagon distribution centered on the stake heart, each summit are chosen in pile foundation upper end
Distance to the stake heart is 0.31m, and five selected summits are five centers of circle of drilling；
When stake footpath is 1.2m, three summits and into positive four into equilateral triangle distribution centered on the stake heart are chosen in pile foundation upper end
Four summits of side shape distribution, in three summits of equilateral triangle distribution, each summit is 0.25m to the distance of the stake heart, just
In four summits of quadrangle distribution, each summit to the distance of the stake heart is 0.25m, and 7 selected summits are 7 brills
The center of circle in hole；
When stake footpath is 1.4m, eight summits into octagon distribution centered on the stake heart are chosen in pile foundation upper end, each top
Point is 0.51m to the distance of the stake heart, and eight selected summits are eight centers of circle of drilling；
When stake footpath is 1.8m, eight summits and into positive seven into octagon distribution centered on the stake heart are chosen in pile foundation upper end
Seven summits of side shape distribution, in eight summits of octagon distribution, each summit is 0.61m to the distance of the stake heart, just
In seven summits of heptagon distribution, each summit to the distance of the stake heart is 0.30m, and 15 selected summits are 15
The center of circle of drilling；
When stake footpath is 1.6m, 2.0m and 2.2m, the two composition octagon distributions centered on the stake heart are chosen in pile foundation upper end
Eight summits, 16 selected summits be 16 drilling the centers of circle, stake footpath be 1.6m when, one of which octagon
In, each summit to the distance of the stake heart is 0.30m, and in another group of octagon, each summit is to the distance of the stake heart
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, and another group just
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 top
Point is 0.508m to the distance of the stake heart, and in another group of octagon, each summit is 0.91m to the distance of the stake heart.
Meanwhile, reinforce piling strtucture, including the pile foundation body with defect area, pile foundation sheet the invention provides a kind of steel pipe
Drilling vertically being offered in vivo, steel-pipe pile being provided with drilling, steel-pipe pile passes through defect area, and the upper and lower ends of steel-pipe pile to divide
Defect area upper and lower ends complete pile foundation at least 1m is not extended, and steel-pipe pile includes seamless steel pipe and the steel being arranged in seamless steel pipe
Muscle, is fixed between seamless steel pipe and reinforcing bar by pouring micro-expansion cement mortar.
In foregoing piling strtucture, the top construction of pile foundation body has cushion cap, and the upper end of reinforcing bar anchors into cushion cap not in steel-pipe pile
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 diameters
It is 25mm, M35 micro-expansion cement mortars is irrigated therebetween, steel-pipe pile extexine is painted with red lead anti-corrosive paint.
Compared with prior art, the ruggedized construction and method can fast and effeciently to unqualified or second-rate pile foundation
Consolidation process is carried out, solving existing hole stake pile body has gap, local pile body breaking, and has slag inclusion, and existing method cannot
The problem effectively reinforced, construction method is easy and effective, and with low cost, the process-cycle is short, is particularly suited for solution cavity, fluid bowl and more sends out
The southwest educated.
Brief description of the drawings
Fig. 1 is the main view cross-sectional view that steel pipe of the present invention reinforces piling strtucture；
Fig. 2 is the top view of steel-pipe pile.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, will make further detailed to the present invention below
Description.
Embodiment：
Referring to Figures 1 and 2, the present embodiment provides a kind of steel pipe and reinforces piling strtucture, including the pile foundation body with defect area 11
1, drilling 12 is vertically offered in pile foundation body 1, steel-pipe pile 2 is provided with 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, and steel-pipe pile 2 includes seamless steel pipe 21
With 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, the specification of reinforcing bar 22
It is a diameter of 25mm of C HRB400, M35 micro-expansion cement mortars 23 is irrigated therebetween, the extexine of steel-pipe pile 2 is painted with red lead
Antirust paint, the top construction of pile foundation body 1 has cushion cap 3, and the upper end of reinforcing bar 22 anchors into the 40d of cushion cap 3 in steel-pipe pile 2.
The construction method of above-mentioned piling strtucture is as follows：
Step one, positioning drilling 12：Determine 12 hole positions of drilling in the upper end of pile foundation, rig is moved to and drilled in hole position, bore
Hole is positioned to accurately, and rig installs steady firm, and support level, vertical shaft is vertical, accomplishes the line of three summit one, i.e. hole position, vertical shaft, day
Car on the same line, is not offset vertically with ensureing to drill.Drilling will be stablized, and creep into always to 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 into regular pentagon distribution centered on the stake heart, each summit are chosen in pile foundation upper end
Distance to the stake heart is 0.31m, and five selected summits are five centers of circle of drilling 12；
When stake footpath is 1.2m, three summits and into positive four into equilateral triangle distribution centered on the stake heart are chosen in pile foundation upper end
Four summits of side shape distribution, in three summits of equilateral triangle distribution, each summit is 0.25m to the distance of the stake heart, just
In four summits of quadrangle distribution, each summit to the distance of the stake heart is 0.25m, and 7 selected summits are 7 brills
The center of circle in hole 12；
When stake footpath is 1.4m, eight summits into octagon distribution centered on the stake heart are chosen in pile foundation upper end, each top
Point is 0.51m to the distance of the stake heart, and eight selected summits are eight centers of circle of drilling 12；
When stake footpath is 1.8m, eight summits and into positive seven into octagon distribution centered on the stake heart are chosen in pile foundation upper end
Seven summits of side shape distribution, in eight summits of octagon distribution, each summit is 0.61m to the distance of the stake heart, just
In seven summits of heptagon distribution, each summit to the distance of the stake heart is 0.30m, and 15 selected summits are 15
The center of circle of drilling 12；
When stake footpath is 1.6m, 2.0m and 2.2m, the two composition octagon distributions centered on the stake heart are chosen in pile foundation upper end
Eight summits, 16 selected summits be 16 drilling 12 the centers of circle, stake footpath be 1.6m when, one of which octagon
In, each summit to the distance of the stake heart is 0.30m, and in another group of octagon, each summit is to the distance of the stake heart
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, and another group just
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 top
Point is 0.508m to the distance of the stake heart, and in another group of octagon, 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 one hole has water to overflow, show that rejected region has been got through, shift to other holes, until pile foundation upper end drilling 12 is all got through, then,
Press-in clear water, using water circulation just waste residue discharge pile body, when delivery port water by it is turbid become clear when, then change other holes and locate in turn
Reason, until when all of 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 is by after defect area
Complete pile body at least 1m is inserted, the reinforcing bar 22 on steel-pipe pile 2 need to anchor into cushion cap 3, need inner sleeve to carry out if length is more long
Connecting welding, steel pipe pile body is advisable with without faying surface；
Step 4 apertures mud jacking:After cutting cleaning terminates, carried out at mud jacking by the extravasating hole got out on former pile defect
Reason, slip casting raw material is cement mortar, and cement mortar uses strength grade to be formulated with clear water for 42.5 portland cement, cement mortar
The liquid ratio of mud 1 ~ 1.2, slurries are prepared by first dilute rear dense principle, then add waterproofing agent by the 1% of the water amount of using with, to increase cement
The workability and mobility of slurry, leave test specimen sampling when preparing cement slurry, preparing liquid and additive will ensure quality, and at any time
Measurement dress liquor ratio weight, it is ensured that concentration of slurry reaches design requirement, slurries should be by 14*14 ~ 18*18 mesh sieves hole, in order to avoid be mixed into water
Mud bag bits or other debris, 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, and during the bored grouting of pile foundation upper end, by other hole plugs, grouting pressure increases 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 (10)
1. a kind of steel pipe reinforces the construction method of piling strtucture, it is characterised in that comprise the following steps：
Step one, positioning drillings：Determine drilling hole position in the upper end of pile foundation, rig is moved to and drilled in hole position, bore always
Untill proceeding to the super 1m of full pile, meanwhile, process extravasating hole in fault location；
Step 2 high pressure clear water rotary spray wash：High-pressure injector is put down respectively from each hole, on control high-pressure injector
High-pressure rotary injection cutting cleaning is back and forth carried out down, pressure 20-26MPa is sprayed, and cutting clean range respectively increases up and down from defective section
Plus 0.5m, until the drilling of pile foundation upper end is all got through, then, press-in clear water is using water circulation just waste residue discharge pile body；
Step 3 installs steel-pipe pile：Steel-pipe pile includes seamless steel pipe and the reinforcing bar being arranged in steel pipe, and perfusion is micro- swollen in steel pipe
Swollen cement mortar, the steel-pipe pile extexine for processing carries out antirust treatment, steel-pipe pile is vertically put into the drilling being drilled, steel pipe
By inserting complete pile body at least 1m after defect area, the reinforcing bar on steel-pipe pile need to anchor into cushion cap no less than 35d for stake；
Step 4 apertures mud jacking:After cutting cleaning terminates, carried out at mud jacking by the extravasating hole got out on former pile defect
Reason.
2. a kind of steel pipe reinforces the construction method of piling strtucture according to claim 1, it is characterised in that：It is high in step 2
Jet pipe discharge capacity 70-90L/min, the rotary speed 10-28r/min of injector are pressed, speed 10-15cm/min is lifted, a hole is carried out
Cleaning and another Kong Youshui overflow when, show that rejected region has been got through, shift to other holes, until pile foundation upper end drilling all beat
It is logical.
3. a kind of steel pipe reinforces the construction method of piling strtucture according to claim 1, it is characterised in that：In step 2, stake
After being connected between the drilling of base upper end, clear water is pressed into, using water circulation just waste residue discharge pile body, when the water of delivery port becomes clear by turbid
When, then other holes wheel stream process are changed, until when all of pile foundation upper end drilling current are all clear water, cutting cleaning terminates.
4. a kind of steel pipe reinforces the construction method of piling strtucture according to claim 1, it is characterised in that：In step 3, pipe
Piling bar is by external diameter 127mm, the seamless steel pipe of wall thickness 6mm and a reinforcing bar composition of C HRB400 a diameter of 25, and interior perfusion M35 is micro-
Expansive cement mortar, the steel-pipe pile extexine brushing red lead anti-corrosive paint for processing.
5. a kind of steel pipe reinforces the construction method of piling strtucture according to claim 1, it is characterised in that：Note in step 4
Slurry raw material is cement mortar, and cement mortar uses strength grade to be formulated with clear water for 42.5 portland cement, cement grout water
Gray scale 1 ~ 1.2, prepares slurries, then add waterproofing agent by the 1% of the water amount of using with by first dilute rear dense principle.
6. a kind of steel pipe reinforces the construction method of piling strtucture according to claim 1, it is characterised in that：In step 4, use
Water under high pressure slurry liquid is repeated high-pressure injection in the range of defective section, makes rubble, rock, medium coarse sand and the cement of each stake defective section
Slurries are thoroughly mixed, depending on grouting pressure is according to the foundation strength of supporting course and the compression strength of concrete piles, pile foundation upper end
During bored grouting, by other hole plugs, grouting pressure increases 2-3MPa, after voltage stabilizing 5min, judges whether to stop according to mud jacking resistance
Only slip casting；Or when grout in other holes, stop slip casting.
7. a kind of steel pipe reinforces the construction method of piling strtucture according to claim 1, it is characterised in that：In step one, bore
Hole localization method is：
When stake footpath is 1m, five summits into regular pentagon distribution centered on the stake heart, each summit are chosen in pile foundation upper end
Distance to the stake heart is 0.31m, and five selected summits are five centers of circle of drilling；
When stake footpath is 1.2m, three summits and into positive four into equilateral triangle distribution centered on the stake heart are chosen in pile foundation upper end
Four summits of side shape distribution, in three summits of equilateral triangle distribution, each summit is 0.25m to the distance of the stake heart, just
In four summits of quadrangle distribution, each summit to the distance of the stake heart is 0.25m, and 7 selected summits are 7 brills
The center of circle in hole；
When stake footpath is 1.4m, eight summits into octagon distribution centered on the stake heart are chosen in pile foundation upper end, each top
Point is 0.51m to the distance of the stake heart, and eight selected summits are eight centers of circle of drilling；
When stake footpath is 1.8m, eight summits and into positive seven into octagon distribution centered on the stake heart are chosen in pile foundation upper end
Seven summits of side shape distribution, in eight summits of octagon distribution, each summit is 0.61m to the distance of the stake heart, just
In seven summits of heptagon distribution, each summit to the distance of the stake heart is 0.30m, and 15 selected summits are 15
The center of circle of drilling；
When stake footpath is 1.6m, 2.0m and 2.2m, the two composition octagon distributions centered on the stake heart are chosen in pile foundation upper end
Eight summits, 16 selected summits be 16 drilling the centers of circle, stake footpath be 1.6m when, one of which octagon
In, each summit to the distance of the stake heart is 0.30m, and in another group of octagon, each summit is to the distance of the stake heart
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, and another group just
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 top
Point is 0.508m to the distance of the stake heart, and in another group of octagon, each summit is 0.91m to the distance of the stake heart.
8. 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 offers drilling (12) in body (1), drilling (12) is interior to be provided with steel-pipe pile (2), steel-pipe pile (2) is 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.
9. a kind of steel pipe reinforces piling strtucture according to claim 8, it is characterised in that：The top construction of pile foundation body (1)
There is cushion cap (3), the upper end of reinforcing bar (22) anchors into cushion cap (3) no less than 35d in steel-pipe pile (2).
10. a kind of steel pipe reinforces piling strtucture according to claim 8, it is characterised in that：The specification of seamless steel pipe (21) is
External diameter 127mm, wall thickness 6mm, the specification of reinforcing bar (22) is a diameter of 25mm of C HRB400, and the microdilatancy of M35 is irrigated therebetween
Cement mortar (23), steel-pipe pile (2) extexine is painted with red lead anti-corrosive paint.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611168099.1A CN106759559A (en) | 2016-12-16 | 2016-12-16 | A kind of steel pipe reinforces piling strtucture and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611168099.1A CN106759559A (en) | 2016-12-16 | 2016-12-16 | A kind of steel pipe reinforces piling strtucture and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853538A (en) * | 2018-12-12 | 2019-06-07 | 湖南化工地质工程勘察院有限责任公司 | Cast-in-place concrete pile pile foundation reinforcing structure and its construction method |
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| JP2006336294A (en) * | 2005-06-02 | 2006-12-14 | Fujita Corp | Reinforcing method of pile head section |
| CN103437351A (en) * | 2013-09-18 | 2013-12-11 | 浙江省岩土基础公司 | Treatment method of deviation and fracture remediation of pile body of filling pile |
| CN103541359A (en) * | 2013-09-18 | 2014-01-29 | 浙江省岩土基础公司 | Method for repairing and treating quality defect of cast-in-place pile |
| CN203878590U (en) * | 2014-05-14 | 2014-10-15 | 江苏南通三建集团有限公司 | Post-reinforcement structure for cast-in-place piles |
| CN206319347U (en) * | 2016-12-16 | 2017-07-11 | 中建四局第一建筑工程有限公司 | A kind of steel pipe reinforces piling strtucture |
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2016
- 2016-12-16 CN CN201611168099.1A patent/CN106759559A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336294A (en) * | 2005-06-02 | 2006-12-14 | Fujita Corp | Reinforcing method of pile head section |
| CN103437351A (en) * | 2013-09-18 | 2013-12-11 | 浙江省岩土基础公司 | Treatment method of deviation and fracture remediation of pile body of filling pile |
| CN103541359A (en) * | 2013-09-18 | 2014-01-29 | 浙江省岩土基础公司 | Method for repairing and treating quality defect of cast-in-place pile |
| CN203878590U (en) * | 2014-05-14 | 2014-10-15 | 江苏南通三建集团有限公司 | Post-reinforcement structure for cast-in-place piles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853538A (en) * | 2018-12-12 | 2019-06-07 | 湖南化工地质工程勘察院有限责任公司 | Cast-in-place concrete pile pile foundation reinforcing structure and its construction method |
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Application publication date: 20170531 |
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