CN104988914A - Cast-in-situ bored pile breakage processing method under water area environment - Google Patents
Cast-in-situ bored pile breakage processing method under water area environment Download PDFInfo
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- CN104988914A CN104988914A CN201510318383.1A CN201510318383A CN104988914A CN 104988914 A CN104988914 A CN 104988914A CN 201510318383 A CN201510318383 A CN 201510318383A CN 104988914 A CN104988914 A CN 104988914A
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Abstract
Provided is a cast-in-situ bored pile breakage processing method under a water area environment. Firstly, a grouting pipe is inserted in pre-set depth of a soil layer along the periphery of a cast-in-situ bored pile where the pile breakage condition happens so that guniting operation can be performed; an inner-circle rotary spraying anti-seepage curtain pile (3) and an outer-circle rotary spraying anti-seepage curtain pile (2) which are formed in the mode that a plurality of rotary spraying pile single bodies are connected in a cross linking mode are sequentially constructed; the inner-circle rotary spraying anti-seepage curtain pile and the outer-circle rotary spraying anti-seepage curtain pile are connected in an overlapped mode and go deep to the position at least 5 m below the pile breakage position; after perfusion slurry solidifies and pile body quality is stable, a broken pile is manually excavated at the position of an original cast-in-situ bored pile, and rock ballast and sludge which are dug out are cleared up to the pile breakage position (5); and then, concrete is poured into a drilled hole and compacted through mechanical vibration so that pile connection can be finished. The method can solve the pile breakage problem in the cast-in-situ bored pile constructing process under the water area environment and guarantee the pile connection quality, and has the beneficial effects of being easy and convenient to operate and low in manufacturing cost.
Description
Technical field
The present invention relates to building pile foundation engineering technical field.
Background technology
Bored pile because its speed of application is fast, it is little to take up an area, simultaneously to the strong adaptability of various soil layer, without soil compaction effect, without earthquake, without hot-tempered sound, bearing capacity advantages of higher, be used widely in all kinds of pile foundation engineering.But bored pile is from being bored into filling concrete, affect by factors such as geological conditions, execution control, technical level, plant equipment, material and mixing ratio, quality accident such as Defect Piles, broken pile etc. happen occasionally.Accident, once occur, not only can cause certain economic loss, and can affect the construction speed of whole engineering.More for the processing method of breakage of cast-in-place bored pile problem at present, conventional has " choosing shoulder pole " scheme: namely increase respectively in broken pile both sides and play two stakes, stake connects by the very useful cushion cap of stake; " ballistic method " scheme: namely process in the method for former broken pile position employing percussive drill again pore-forming, concreting; " sinking steel pile casting " scheme: namely adopt the steel pile casting that diameter is larger than broken pile, in broken pile position, steel pile casting is pressed into, 1 meter, below broken pile position, then adopt and manually abolish former broken pile concrete, and to cut in hole clean out after concreting again, concreting is while pull out casing to concreting to design elevation." choosing shoulder pole " scheme wherein can change pile foundation structure form, and " ballistic method " scheme and " sinking steel pile casting " scheme all need large-scale plant equipment, construction technology is complicated, and requires larger construction space, and general unit in charge of construction does not possess execution conditions.Therefore, for the breakage of cast-in-place bored pile process under water environment condition, such scheme all has certain limitation, is difficult to adopt.
Summary of the invention
The object of the invention is to overcome the breakage of cast-in-place bored pile problem under water environment condition, a kind of broken pile problem that can effectively solve under water environment condition in bored pile construction process is provided, ensure the breakage of cast-in-place bored pile processing method of pile quality.
Object of the present invention is achieved through the following technical solutions:
Breakage of cast-in-place bored pile processing method under a kind of water environment, processing method is as follows: first along occurring that Grouting Pipe is inserted soil layer desired depth by the bored pile periphery of broken pile situation, from bottom to top carry out spray operation, construct the inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain that are cross-linked with each other by multiple rotary churning pile monomer respectively successively, inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain mutually overlap and to go deep into broken pile position at least 5m degree of depth, treat that the perfusion slurry of inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain solidifies, after pile quality is stable, excavated by manual work is carried out except broken pile in former bored pile position, cleaning digs out rock ballast and mud to broken pile position, then to concreting mechanical vibration compacting completes pile extension in boring.
The stake footpath of inner ring churning seepage proof curtain stake of the present invention and the stake of outer ring churning seepage proof curtain is 0.3 ~ 0.8m, the stake footpath of outer ring churning seepage proof curtain stake is greater than the stake footpath of inner ring churning seepage proof curtain stake, and the mutual lap length of inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain is not less than 100mm.The grout material constructing inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain can adopt cement-silicate slurries or single cement paste or Cement fly ash or cement-bentonite grout as press mortar.Described cement-silicate slurries are the combined casting materials mixing water glass in cement grout, and wherein, the water/binder ratio of cement grout is 0.75:1 ~ 1:1, and water glass incorporation is 2% ~ 4% of cement grout quality.The present invention first can occur that the bored pile top of broken pile situation is positioned at position, riverbed, constructs and builds cofferdam, island, then Grouting Pipe is inserted soil layer desired depth, from bottom to top carry out spray operation around bored pile.
The invention has the beneficial effects as follows:
(1) scheme that the present invention pours into the stake of churning seepage proof curtain effectively can solve the breakage of cast-in-place bored pile problem under water environment condition, ensure pile extension quality, there is the advantage that constructing operation is easy, cost is low, avoid the difficult problem that employing " ballistic method " scheme does not possess with " sinking steel pile casting " scheme execution conditions.
(2) inside and outside two circle churning seepage proof curtain stakes can be cross-linked to form mutually the complete seepage proof curtain of a circle, complete hand excavation smoothly, cut, clear up, hand-placed concrete again under the condition of " sealing antiseepage ", can fully ensure pile extension quality.
(3) select water glass as injecting paste material fast coagulating early strength agent and injecting paste material impervious agent, the setting time of cement paste can be reduced, prevent cement paste by underground water erosion unsuitable consolidation, and the water blockoff barrier performance of rotary churning pile can be significantly improved.
Accompanying drawing explanation
Fig. 1 is the schematic diagram adopting the inventive method process breakage of cast-in-place bored pile;
Fig. 2 is the floor map of the churning seepage proof curtain stake of the inventive method perfusion.
In figure, each label is: 1---bored pile; 2---the stake of outer ring churning seepage proof curtain; 3---the stake of inner ring churning seepage proof curtain; 4---build cofferdam, island; 5---broken pile position; 6---riverbed.
Detailed description of the invention
Below by drawings and Examples, the present invention is described in further detail, but protection scope of the present invention is not limited to described content.
A breakage of cast-in-place bored pile processing method under water environment, as shown in Figure 1 and Figure 2, its processing method is as follows:
(1) according to practice of construction situation, broken pile position (degree of depth and absolute altitude etc.) is determined;
(2) according to broken pile position, position, hole and the designing pile length of inner ring churning seepage proof curtain stake 3 and outer ring churning seepage proof curtain stake 2 is determined;
(3) occurring that bored pile 1 top of broken pile situation is positioned at position, riverbed 6, construct around bored pile 1 and build cofferdam, island 4, then along occurring that bored pile 1 periphery of broken pile situation is holed, Grouting Pipe is inserted soil layer desired depth, from bottom to top carry out spray operation, construct the inner ring churning seepage proof curtain stake 3 be cross-linked with each other by multiple rotary churning pile monomer respectively as shown in Figure 2 and outer ring churning seepage proof curtain stake 2 successively, inner ring churning seepage proof curtain stake 3 and outer ring churning seepage proof curtain stake 2 overlap, mutually to ensure the sealing effect of outer ring seepage proof curtain stake.Inner ring churning seepage proof curtain stake 3 and outer ring churning seepage proof curtain stake 2 be at least 5m degree of depth to broken pile position all deeply.The spray operation construction of churning seepage proof curtain stake can adopt art methods.Perfusion slurry until inner ring churning seepage proof curtain stake 3 and outer ring churning seepage proof curtain stake 2 solidifies, pile quality stable after, excavated by manual work is carried out except broken pile in former bored pile position, cleaning digs out rock ballast and mud to broken pile position 5, then to concreting in boring and mechanical vibration compacting completes pile extension.The stake footpath of inner ring churning seepage proof curtain stake 3 and outer ring churning seepage proof curtain stake 2 is 0.3 ~ 0.8m, the stake footpath of outer ring churning seepage proof curtain stake 2 is greater than the stake footpath of inner ring churning seepage proof curtain stake 3, and the mutual lap length of inner ring churning seepage proof curtain stake 3 and outer ring churning seepage proof curtain stake 2 is not less than 100mm.The stake footpath of the inner ring churning seepage proof curtain stake 3 of the present embodiment is 0.5m, and the stake footpath of outer ring churning seepage proof curtain stake 2 is 0.8m, and the mutual lap length of inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain is 120mm.The grout material constructing inner ring churning seepage proof curtain stake and the stake of outer ring churning seepage proof curtain can adopt cement-silicate slurries or single cement paste or Cement fly ash or cement-bentonite grout as press mortar, but preferred water muddy water glass pulp, described cement-silicate slurries are the combined casting materials mixing water glass in cement grout, wherein, the water/binder ratio of cement grout is 0.75:1 ~ 1:1, and water glass incorporation is 2% ~ 4% of cement grout quality.
Claims (5)
1. the breakage of cast-in-place bored pile processing method under a water environment, it is characterized in that, processing method is as follows: first along occurring that Grouting Pipe is inserted soil layer desired depth by bored pile (1) periphery of broken pile situation, from bottom to top carry out spray operation, construct inner ring churning seepage proof curtain stake (3) and outer ring churning seepage proof curtain stake (2) that are cross-linked with each other by multiple rotary churning pile monomer respectively successively, inner ring churning seepage proof curtain stake (3) and outer ring churning seepage proof curtain stake (2) mutually overlap and to go deep into broken pile position at least 5m degree of depth, treat that the perfusion slurry of inner ring churning seepage proof curtain stake (3) and outer ring churning seepage proof curtain stake (2) solidifies, after pile quality is stable, excavated by manual work is carried out except broken pile in former bored pile position, cleaning digs out rock ballast and mud to broken pile position (5), then to concreting mechanical vibration compacting completes pile extension in boring.
2. the breakage of cast-in-place bored pile processing method under a kind of water environment according to claim 1, it is characterized in that, the stake footpath of described inner ring churning seepage proof curtain stake (3) and outer ring churning seepage proof curtain stake (2) is 0.3 ~ 0.8m, the stake footpath of outer ring churning seepage proof curtain stake (2) is greater than the stake footpath of inner ring churning seepage proof curtain stake (3), and the mutual lap length of inner ring churning seepage proof curtain stake (3) and outer ring churning seepage proof curtain stake (2) is not less than 100mm.
3. the breakage of cast-in-place bored pile processing method under a kind of water environment according to claim 1 and 2, it is characterized in that, the grout material constructing inner ring churning seepage proof curtain stake (3) and outer ring churning seepage proof curtain stake (2) can adopt cement-silicate slurries or single cement paste or Cement fly ash or cement-bentonite grout as press mortar.
4. the breakage of cast-in-place bored pile processing method under a kind of water environment according to claim 3, it is characterized in that, described cement-silicate slurries are the combined casting materials mixing water glass in cement grout, wherein, the water/binder ratio of cement grout is 0.75:1 ~ 1:1, and water glass incorporation is 2% ~ 4% of cement grout quality.
5. the breakage of cast-in-place bored pile processing method under a kind of water environment according to claim 1 and 2, it is characterized in that, first occurring that bored pile (1) top of broken pile situation is positioned at riverbed (6) position, construct around bored pile (1) and build cofferdam, island (4), again Grouting Pipe is inserted soil layer desired depth, from bottom to top carry out spray operation.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265706A (en) * | 2018-03-30 | 2018-07-10 | 中国建筑第二工程局有限公司 | A kind of engineering pile and pile-formation process in solution cavity geology |
| CN112411642A (en) * | 2020-11-13 | 2021-02-26 | 浙江杰地建筑设计有限公司 | Reinforced structure for defect treatment of large-diameter concrete cast-in-place pile and construction method |
| CN112523202A (en) * | 2020-11-23 | 2021-03-19 | 中冶交通建设集团有限公司 | Broken pile treatment construction method for cast-in-situ bored pile |
| CN113605379A (en) * | 2021-08-16 | 2021-11-05 | 大成科创基础建设股份有限公司 | Construction process of large-diameter cast-in-place pile in high-fill area |
| CN115233664A (en) * | 2022-09-08 | 2022-10-25 | 郑州大学 | Reinforcing and repairing method for deep broken pile defect of cast-in-place pile |
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| JP3888888B2 (en) * | 2001-12-11 | 2007-03-07 | 丸五基礎工業株式会社 | Cast-in-place concrete pile structure |
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| CN103911991A (en) * | 2014-03-17 | 2014-07-09 | 振业建设集团有限公司 | Quick pile-splicing construction method for prestressed concrete PS (poly styrene) pile fracture |
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2015
- 2015-06-11 CN CN201510318383.1A patent/CN104988914A/en active Pending
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| JP3888888B2 (en) * | 2001-12-11 | 2007-03-07 | 丸五基礎工業株式会社 | Cast-in-place concrete pile structure |
| CN102220762A (en) * | 2011-04-25 | 2011-10-19 | 中交隧道工程局有限公司 | Method and device for disposing underwater pouring concrete pile breaking accident |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265706A (en) * | 2018-03-30 | 2018-07-10 | 中国建筑第二工程局有限公司 | A kind of engineering pile and pile-formation process in solution cavity geology |
| CN112411642A (en) * | 2020-11-13 | 2021-02-26 | 浙江杰地建筑设计有限公司 | Reinforced structure for defect treatment of large-diameter concrete cast-in-place pile and construction method |
| CN112523202A (en) * | 2020-11-23 | 2021-03-19 | 中冶交通建设集团有限公司 | Broken pile treatment construction method for cast-in-situ bored pile |
| CN113605379A (en) * | 2021-08-16 | 2021-11-05 | 大成科创基础建设股份有限公司 | Construction process of large-diameter cast-in-place pile in high-fill area |
| CN115233664A (en) * | 2022-09-08 | 2022-10-25 | 郑州大学 | Reinforcing and repairing method for deep broken pile defect of cast-in-place pile |
| CN115233664B (en) * | 2022-09-08 | 2023-07-25 | 郑州大学 | Reinforcing and repairing method for deep pile breaking defect of cast-in-place pile |
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