CN104863126B - Use the method that Grouting Technology processes large diameter bored pile collapse hole - Google Patents
Use the method that Grouting Technology processes large diameter bored pile collapse hole Download PDFInfo
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- CN104863126B CN104863126B CN201510318302.8A CN201510318302A CN104863126B CN 104863126 B CN104863126 B CN 104863126B CN 201510318302 A CN201510318302 A CN 201510318302A CN 104863126 B CN104863126 B CN 104863126B
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Abstract
Use the method that Grouting Technology processes large diameter bored pile collapse hole, the first inner ring madjack pipe (5) that colligation is concentric in preparation hangs onto the steel reinforcement cage (9) in cast-in-situ bored pile (1) and outer ring madjack pipe (6)；The lower end of inner ring madjack pipe and outer ring madjack pipe is all beyond steel reinforcement cage 5～10cm, and top all pours the end face 0.5～1.0m of cushion cap (3) in cast-in-situ bored pile top beyond follow-up preparation；Clear hole immediately after cast-in-situ bored pile generation collapse hole, then hangs onto in hole by steel reinforcement cage, concrete perfusion in hole, and grout pile weight hole to be drilled tends towards stability after-pouring cushion cap；Finally use high-pressure rotary-spray construction method by inner ring madjack pipe and outer ring madjack pipe slip casting to collapse hole position, form consolidation grouting body (2), collectively form composite pile foundation with the cast-in-situ bored pile on top, undertake upper load.The present invention can effectively solve the large diameter bored pile collapse hole problem in pier footing, and easy construction is quick.
Description
Technical field
The present invention relates to building pile foundation engineering technical field.
Background technology
Cast-in-situ 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 layers, without soil compaction effect, without shaking
Evil, without hot-tempered sound, bearing capacity advantages of higher, be used widely in pile foundation of bridge pier engineering.And the boring of pile foundation of bridge pier engineering fills
Note stake general diameter is relatively big, in the poor area of geological conditions or due to reasons such as constructing operation are improper, it is easy in drilling construction mistake
Journey occurs large-scale collapse hole, burying phenomenon.For this, process according to staking scheme, the most long in time limit, cost
Height, and at pile foundation of bridge pier engineering many employings multi-column pier foundation, does not has execution conditions of staking, and riverbed pile rate of subsiding is low etc. in addition
Reason, the method is the most inapplicable.
Summary of the invention
It is an object of the invention to overcome the cast-in-situ bored pile collapse hole problem during bridge pier foundation in construction duration, it is provided that a kind of can efficient solution
The certainly cast-in-situ bored pile collapse hole problem in pile foundation of bridge pier plinth, it is ensured that bearing capacity of pile foundation and the major diameter using Grouting Technology of stability
Cast-in-situ bored pile collapse hole processing method.
The purpose of the present invention is achieved through the following technical solutions:
Using the method that Grouting Technology processes large diameter bored pile collapse hole, method step is as follows:
Hang onto the concentric inner ring madjack pipe of colligation in the steel reinforcement cage in cast-in-situ bored pile and outer ring madjack pipe preparing the most in advance；In
The lower end of circle madjack pipe and outer ring madjack pipe is all beyond steel reinforcement cage 5～10cm, and top all pours in cast-in-situ bored pile beyond follow-up preparation
The end face 0.5～1.0m of the cushion cap at top；
B. in the casing of pile foundation, pour cast-in-situ bored pile, after bored concrete pile generation collapse hole, carry out clear hole with drilling rod and drill bit immediately；
C., after clear hole, steel reinforcement cage is hung onto in hole in the lump together with the inner ring madjack pipe tied up and outer ring madjack pipe；
D. concrete perfusion in hole, after concrete gradually solidifies and cast-in-situ bored pile pile quality tends towards stability, fills in boring
Note stake top concreting cushion cap；
E., after bearing platform construction, high-pressure rotary-spray construction method is used to pass through inner ring madjack pipe and outer ring madjack pipe slip casting to collapse hole position
Put, carry out the churning consolidation construction of collapse hole position, form consolidation grouting body, collectively form composite pile with the cast-in-situ bored pile on top
Basis, undertakes upper load.
Inner ring madjack pipe of the present invention and the respective joint of outer ring madjack pipe all use screwed connection, and two ends are respectively adopted plug envelope
Sternly.Described churning consolidation construction uses cement-silicate serosity or single cement mortar or Cement fly ash or cement-bentonite grout
As press mortar, using and determine spray mode in high pressure jet grouting, serosity is pressed into collapse hole position, serosity penetrates the collapse hole soil body
And together with soil solidifying, form consolidation grouting body.Described cement-silicate serosity is to mix answering of waterglass in cement grout
Closing injecting paste material, wherein, the ratio of mud of cement grout is 0.75:1～1:1, and waterglass incorporation is the 2%～4% of cement grout quality.
The invention has the beneficial effects as follows:
(1) using the churning consolidation construction that collapse hole position is carried out by Grouting Technology, churning consolidation Scheme of Strengthening easy construction is quick,
Duration is short, and cost is low.
(2) consolidation grouting physical ability and pile soil horizon have preferably combination, produce bigger frictional force, and with epimere cast-in-situ bored pile
Overlap joint forms composite pile foundation, shared upper load, it is ensured that bearing capacity of pile foundation and bridge pier stability.
The present invention can effectively solve the large diameter bored pile collapse hole problem in pier footing, can meet Pile Bearing Capacity requirement,
And there is easy construction advantage efficiently, it is to avoid the long in time limit and riverbed faced when using staking scheme pile rate of subsiding is low
A difficult problem, compares conventional staking scheme, and the suitability is higher, has more superiority.
Accompanying drawing explanation
Fig. 1 is pier footing cast-in-situ bored pile collapse hole schematic diagram；
Fig. 2 processes cast-in-situ bored pile collapse hole schematic diagram for using the inventive method；
Fig. 3 is that spiral jetting grout consolidation process madjack pipe is buried underground and churning induration schematic diagram.
Figure is respectively numbered: 1 cast-in-situ bored pile；2 consolidation grouting bodies；3 cushion caps；4 casings；5——
Inner ring madjack pipe；6 outer ring madjack pipes；7 drilling rods；8 drill bits；9 steel reinforcement cages；A riverbed；B—
Collapse hole position.
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.
The method using Grouting Technology to process large diameter bored pile collapse hole, sees Fig. 1, Fig. 2, Fig. 3, and method step is as follows:
Hang onto the concentric inner ring madjack pipe 5 of colligation in the steel reinforcement cage 9 in cast-in-situ bored pile 1 and outer ring mud jacking preparing the most in advance
Pipe 6；The lower end of inner ring madjack pipe 5 and outer ring madjack pipe 6 is all beyond steel reinforcement cage 5～10cm, and top all pours beyond follow-up preparation
The end face 0.5～1.0m of the cushion cap 3 in cast-in-situ bored pile top；Inner ring madjack pipe 5 and the respective joint of outer ring madjack pipe 6 are all adopted
With screwed connection, two ends are respectively adopted plug and obturage；
Pouring cast-in-situ bored pile 1 at riverbed A in the casing 4 of the pile foundation position b. determined, bored concrete pile occurs such as collapse hole position in Fig. 1
After putting the collapse hole shown in B, according to place exploration report and design requirement, determine concrete collapse hole position (degree of depth and absolute altitude etc.) and
Stratum, place, carries out clear hole with drilling rod 7 and drill bit 8 immediately；Casting concrete bored concrete pile and clear hole all can use art methods；
C., after clear hole, steel reinforcement cage is hung onto in hole in the lump together with the inner ring madjack pipe 5 tied up and outer ring madjack pipe 6；
D. concrete perfusion in hole, after concrete gradually solidifies and cast-in-situ bored pile pile quality tends towards stability, fills in boring
Note stake top concreting cushion cap 3；
E., after cushion cap 3 construction, high-pressure rotary-spray construction method is used by inner ring madjack pipe 5 and outer ring madjack pipe 6 slip casting extremely
Collapse hole position, carries out the churning consolidation construction of collapse hole position, forms consolidation grouting body 2, common with the cast-in-situ bored pile 1 on top
Constitute composite pile foundation, undertake upper load.Churning consolidation construction uses cement-silicate serosity or single cement mortar or cement flour
Coal ash serosity or cement-bentonite grout are as press mortar, and employing is determined spray and penetrated supplementary consolidation style construction formation consolidation grouting body 2,
I.e. with determining spray mode in high pressure jet grouting, serosity being pressed into collapse hole position, serosity penetrates the collapse hole soil body and exists with soil solidifying
Together, consolidation grouting body is formed.Described cement-silicate serosity is the combined casting material mixing waterglass in cement grout, its
In, the ratio of mud of cement grout is 0.75:1～1:1, and waterglass incorporation is the 2%～4% of cement grout quality.High-pressure whirl jet
Work can use art methods.
Claims (4)
1. use the method that Grouting Technology processes large diameter bored pile collapse hole, it is characterised in that method step is as follows:
The most in advance prepare to hang onto the concentric inner ring madjack pipe (5) of colligation in the steel reinforcement cage (9) in cast-in-situ bored pile (1) and
Outer ring madjack pipe (6)；The lower end of inner ring madjack pipe (5) and outer ring madjack pipe (6) is all beyond steel reinforcement cage 5～10cm, and top is equal
The end face 0.5～1.0m of cushion cap (3) in cast-in-situ bored pile top is poured beyond follow-up preparation；
B. in the casing (4) of pile foundation, cast-in-situ bored pile (1) is poured, immediately with drilling rod (7) after cast-in-situ bored pile generation collapse hole
Clear hole is carried out with drill bit (8)；
C., after clear hole, steel reinforcement cage is hung onto hole in the lump together with the inner ring madjack pipe (5) tied up and outer ring madjack pipe (6)
In；
D. concrete perfusion in hole, after concrete gradually solidifies and cast-in-situ bored pile pile quality tends towards stability, fills in boring
Note stake top is with concreting cushion cap (3)；
E., after cushion cap (3) construction, use high-pressure rotary-spray construction method by inner ring madjack pipe (5) and outer ring madjack pipe (6)
Slip casting, to collapse hole position, carries out the churning consolidation construction of collapse hole position, forms consolidation grouting body (2), with the drill-pouring on top
Stake (1) collectively forms composite pile foundation, undertakes upper load.
Employing Grouting Technology the most according to claim 1 processes the method for large diameter bored pile collapse hole, it is characterised in that
Described inner ring madjack pipe (5) and outer ring madjack pipe (6) respective joint all use screwed connection, and two ends are respectively adopted plug envelope
Sternly.
Employing Grouting Technology the most according to claim 1 and 2 processes the method for large diameter bored pile collapse hole, its feature
Being, described churning consolidation construction uses cement-silicate serosity or single cement mortar or Cement fly ash or cement clay slip
Liquid as press mortar, uses and determines spray mode in high pressure jet grouting, serosity is pressed into collapse hole position, and serosity penetrates collapse hole soil
Body together with soil solidifying, forms consolidation grouting body (2).
Employing Grouting Technology the most according to claim 3 processes the method for large diameter bored pile collapse hole, it is characterised in that
Described cement-silicate serosity is the combined casting material mixing waterglass in cement grout, and wherein, the ratio of mud of cement grout is
0.75:1～1:1, waterglass incorporation is the 2%～4% of cement grout quality.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318302.8A CN104863126B (en) | 2015-06-11 | 2015-06-11 | Use the method that Grouting Technology processes large diameter bored pile collapse hole |
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| CN201510318302.8A CN104863126B (en) | 2015-06-11 | 2015-06-11 | Use the method that Grouting Technology processes large diameter bored pile collapse hole |
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| CN104863126A CN104863126A (en) | 2015-08-26 |
| CN104863126B true CN104863126B (en) | 2016-08-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999198A (en) * | 2018-09-06 | 2018-12-14 | 蔡荪萍 | A kind of New-type mould bag soil nailing pile constructing process |
| CN114855783B (en) * | 2022-05-31 | 2023-10-13 | 中国建筑第八工程局有限公司 | Pile foundation construction device and construction method for hole collapse part of bored pile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3720065A (en) * | 1971-07-06 | 1973-03-13 | J Sherard | Making holes in the ground and freezing the surrounding soil |
| CN101545256A (en) * | 2008-03-28 | 2009-09-30 | 中铁十三局集团第三工程有限公司 | Method for treating collapsed holes of bored piles by protective cylinder of steel reinforcement cage under geological conditions of silt stratification |
| CN102071645A (en) * | 2010-12-31 | 2011-05-25 | 中铁大桥局集团有限公司 | Bridge bored pile hole wall opening protection method |
| CN103510510A (en) * | 2013-10-22 | 2014-01-15 | 山东鸿顺集团有限公司 | Reinforced long spiral drilling concrete grouting pile and construction method thereof |
| CN103603340A (en) * | 2013-12-06 | 2014-02-26 | 中冶建工集团有限公司 | Rotary drilling and pile filling construction method capable of preventing hole collapse through flexible protection |
| CN102691296B (en) * | 2012-05-22 | 2015-02-11 | 广州市建筑科学研究院有限公司 | Pipe pile foundation for static-pressure grouting on pile side and rotary jet grouting at pile bottom and construction method thereof |
-
2015
- 2015-06-11 CN CN201510318302.8A patent/CN104863126B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3720065A (en) * | 1971-07-06 | 1973-03-13 | J Sherard | Making holes in the ground and freezing the surrounding soil |
| CN101545256A (en) * | 2008-03-28 | 2009-09-30 | 中铁十三局集团第三工程有限公司 | Method for treating collapsed holes of bored piles by protective cylinder of steel reinforcement cage under geological conditions of silt stratification |
| CN102071645A (en) * | 2010-12-31 | 2011-05-25 | 中铁大桥局集团有限公司 | Bridge bored pile hole wall opening protection method |
| CN102691296B (en) * | 2012-05-22 | 2015-02-11 | 广州市建筑科学研究院有限公司 | Pipe pile foundation for static-pressure grouting on pile side and rotary jet grouting at pile bottom and construction method thereof |
| CN103510510A (en) * | 2013-10-22 | 2014-01-15 | 山东鸿顺集团有限公司 | Reinforced long spiral drilling concrete grouting pile and construction method thereof |
| CN103603340A (en) * | 2013-12-06 | 2014-02-26 | 中冶建工集团有限公司 | Rotary drilling and pile filling construction method capable of preventing hole collapse through flexible protection |
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| CN104863126A (en) | 2015-08-26 |
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Address after: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Co-patentee after: YUNNAN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Patentee after: YCIH FOUNDATION ENGINEERING CO.,LTD. Address before: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Co-patentee before: YUNNAN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Patentee before: YUNNAN CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING CO.,LTD. |
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Effective date of registration: 20170525 Address after: Guandu information industry base in Yunnan province Kunming city forest road 650501 No. 188 construction development building Co-patentee after: Yunnan Construction Investment Holding Group Co., Ltd. Patentee after: YCIH FOUNDATION ENGINEERING CO.,LTD. Address before: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Co-patentee before: YUNNAN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Patentee before: YCIH FOUNDATION ENGINEERING CO.,LTD. |
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