CN106638648A - Deviation rectifying method of open caisson - Google Patents
Deviation rectifying method of open caisson Download PDFInfo
- Publication number
- CN106638648A CN106638648A CN201611189590.2A CN201611189590A CN106638648A CN 106638648 A CN106638648 A CN 106638648A CN 201611189590 A CN201611189590 A CN 201611189590A CN 106638648 A CN106638648 A CN 106638648A
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- CN
- China
- Prior art keywords
- mud
- open caisson
- mudhole
- construction
- forced landing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
Abstract
The invention discloses a deviation rectifying method of an open caisson. The deviation rectifying method is characterized in that mud discharging holes are formed at the periphery of the open caisson, the diameter of each of the mud discharging hole is 0.15-0.3m, the interval among the mud discharging holes in a main forced landing direction is 0.8m, the interval among the mud discharging holes in a side forced landing direction is 0.8-1.3m, the closer the mud discharging holes in the side forced landing direction to a main forced landing shaft, the smaller the interval is, the adjacent intervals of the mud discharging holes in the side forced landing direction decreases in sequence along the side forced landing shaft, and the decreasing range is 50-100mm; interval construction is adopted when mud absorbing is conducted, that is, the mud discharging holes are arranged according to a sequence, construction is firstly conducted on the mud discharging holes in an odd number sequence, and then construction is conducted on the mud discharging holes in an even number sequence; arrangement is conducted on mud absorbing construction according to the condition of the deviation rectifying amount, the deviation rectifying amount of each time is less than or equal to 5cm, when target deviation rectifying amount is big, a multi-wheel mud absorbing construction technology is adopted, and the intermittence of the construction time of mud absorbing between adjacent wheels is no less than 30min. According to the deviation rectifying method of the open caisson, the operation technology is reliable, and the deviation rectifying effect is good.
Description
Technical field
The present invention relates to a kind of method for correcting error of open caisson, it is adaptable to municipal field.
Background technology
Open caisson construction is improper to cause inclination of open caisson accident, and during the correction for inclining open caisson, subsoil extraction is traditional
Method for correcting error.But currently used soil digging technique needs first to excavate operation well or operation slot mostly, then in operation well or
Soil digging is carried out to open caisson edge with various methods in person's operation slot, back work amount is larger and rectifying effect is not obvious.Particularly
In the case where level of ground water is higher, construction can become difficult because of operation well or operation slot internal water accumulation.Can be using suction mud
Mode carries out stress removal to inclination of open caisson position so as to reach rectifying effect, mudding is inhaled in this process and closes whether measure has
Effect property is to concern correction success or failure.
The content of the invention
The present invention is to provide a kind of method for correcting error of open caisson, solves the problems, such as that open caisson deviation rectification effect is bad.
Mudhole, a diameter of 0.15～0.3m of mudhole, main forced landing direction mudhole are arranged around open caisson in the present invention
Spacing is 0.8m, and side forced landing direction mud extraction pitch of holes is 0.8～1.3m, side force-land direction mudhole from main forced landing shaft more close to spacing
Less, sides adjacent forced landing direction mud extraction pitch of holes is reduced successively along side forced landing shaft, and reduction amplitude is 50～100mm.
Mud extraction hole depth is closely related with rectifying effect, has carried out lot of experiments situation for this, table 1 be mud extraction hole depth with
Settlement relationship, result of the test shows that sedimentation gradually increases as mud extraction hole depth increases, and increases to certain amplitude sedimentation and tends to flat
Surely.
According to many experimental results, mixed economy factor, mud extraction hole depth determines according to soil property situation, when open caisson bottom is
During clay, mud extraction hole depth is 2m below open caisson bottom；When open caisson bottom is silt, mud extraction hole depth is below open caisson bottom
1.5m；When open caisson bottom is muck soil, mud extraction hole depth is 1m below open caisson bottom；When open caisson bottom is sand, go out
Mud hole depth is 0.5m below open caisson bottom.
The mud extraction hole depth of table 1 and settlement relationship
Using interval construction when inhaling mud, i.e., in order mudhole carried out into layout, the mudhole of odd number order of first constructing,
The mudhole of even number order of constructing again.
Inhale mud construction arranged according to correction amount situation, each correction amount be less than or equal to 5cm, when target correction amount compared with
When big, mud construction technologies are inhaled using wheel more, adjacent wheels inhale the mud construction intermittent time no less than 30min, it is to avoid sediment failure.
The drilling rod of construction mudhole carries air intake duct, dredging tube and gas tube, and rubber bulb is installed in drilling rod bottom.Bar drill to be drilled
To mudhole bottom, then 0.6m is lifted, the rubber bulb of drilling rod bottom is inflated, air pressure is 0.3～0.4MPa.Rubber bulb rises
The effect of closing mudhole, then clay is clogged on rubber bulb further seal, clay refilling thickness is 0.3～0.4m.
Then the air compressor machine being connected with drilling rod air intake duct is started, the space below rubber bulb forms negative pressure, treats that negative pressure reaches 75～85MPa
When close air compressor machine, starting the siphon suction dredge being connected with dredging tube carries out suction operation.
Because the factors such as native bore deformation cause vacuum to decay in work progress, the excessive vacuum decay of drilling rod hoisting depth
Can be excessive.Due to the pressure change size of closed gas it is related to volume of air, if drilling rod hoisting depth is too small to cause true
Reciprocal of duty cycle amplitude of variation is excessive, it is difficult to maintain expected vacuum.Because here drilling rod hoisting depth determines according to test, table 2 is brill
Bar hoisting depth and the relation of vacuum, determine that drilling rod hoisting depth is 0.6m according to table 1.
Table 2 is the relation of drilling rod hoisting depth and vacuum
| Drilling rod hoisting depth/m | Maintain vacuum/MPa |
| 0.4 | 63 |
| 0.4 | 61 |
| 0.4 | 60 |
| 0.5 | 72 |
| 0.5 | 70 |
| 0.5 | 73 |
| 0.6 | 78 |
| 0.6 | 80 |
| 0.6 | 81 |
| 0.7 | 75 |
| 0.7 | 74 |
| 0.7 | 73 |
| 0.8 | 65 |
| 0.8 | 64 |
| 0.8 | 67 |
Duct can be backfilled with sand after correction purpose is reached, and continue the sedimentation situation for observing open caisson, the sedimentation of 7 days back open caissons
In unsteady phenomena, i.e. settling amount more than 0.05mm/d, the grouting and reinforcing soil body is carried out.
Operating procedure reliability of the present invention, rectifying effect is good.
Description of the drawings
The correction schematic diagram of Fig. 1 open caissons.
1st, open caisson, 2, mudhole.
Specific embodiment
The present embodiment is described in detail below in conjunction with accompanying drawing.
The differential settlement of certain open caisson east and west reaches 110mm, and open caisson bottom is clay.
Mudhole is arranged around open caisson, a diameter of 0.2m of mudhole, main forced landing direction mud extraction pitch of holes is 0.8m, in figure
Forced landing shaft based on A axles, side forced landing direction mud extraction pitch of holes is 0.8～1.3m, and a axles and b axles are side forced landing shaft in figure, side forced landing side
To mudhole from main forced landing shaft more close to spacing it is less, sides adjacent forced landing direction mud extraction pitch of holes reduce successively along side forced landing shaft, subtract
Few amplitude is 50～100mm.Mud extraction hole depth is 2m below open caisson bottom.
Using interval construction when inhaling mud, i.e., in order mudhole carried out into layout, the mudhole of odd number order of first constructing,
The mudhole of even number order of constructing again.
Inhale mud construction to be arranged according to correction amount situation, mud construction technology is inhaled using three-wheel, first round correction amount is
40mm, the second wheel correction amount is 40mm, and third round correction amount is 30mm, and the adjacent wheels suction mud construction intermittent time is no less than 30min,
Avoid sediment failure.
The drilling rod of construction mudhole carries air intake duct, dredging tube and gas tube, and rubber bulb is installed in drilling rod bottom.Bar drill to be drilled
To mudhole bottom, then 0.6m is lifted, the rubber bulb of drilling rod bottom is inflated, air pressure is 0.35MPa.Rubber bulb has played envelope
The effect of mudhole is closed, then clay is clogged on rubber bulb and further sealed, clay refilling thickness is 0.35m.Then start
The air compressor machine being connected with drilling rod air intake duct, the space below rubber bulb forms negative pressure, and pneumatics is closed when negative pressure reaches 80MPa
Machine, starting the siphon suction dredge being connected with dredging tube carries out suction operation.
The duct sand backfill after correction purpose is reached, continues the sedimentation situation for observing open caisson, the settling amount of 7 days back open caissons
For 0.01mm/d, sedimentation is in stability state.
Claims (2)
1. a kind of method for correcting error of open caisson, is characterized in that arranging mudhole around open caisson, a diameter of 0.15～0.3m of mudhole,
Main forced landing direction mud extraction pitch of holes is 0.8m, and side forced landing direction mud extraction pitch of holes is 0.8～1.3m, side force-land direction mudhole from
The nearlyer spacing of main forced landing shaft is less, and sides adjacent forced landing direction mud extraction pitch of holes is reduced successively along side forced landing shaft, and the amplitude that reduces is 50
～100mm；
Using interval construction when inhaling mud, i.e., in order mudhole carried out into layout, the mudhole of odd number order of first constructing, then apply
The mudhole of work even number order；
Inhale mud construction arranged according to correction amount situation, each correction amount be less than or equal to 5cm, when target correction amount it is larger
When, mud construction technology is inhaled using many wheels, the adjacent wheels suction mud construction intermittent time is no less than 30min, it is to avoid sediment failure；
The drilling rod of construction mudhole carries air intake duct, dredging tube and gas tube, and rubber bulb is installed in drilling rod bottom；Bar drill to be drilled is to going out
Mud bottom hole portion, then 0.6m is lifted, the rubber bulb of drilling rod bottom is inflated, air pressure is 0.3～0.4MPa；Rubber bulb has played envelope
The effect of mudhole is closed, then clay is clogged on rubber bulb and further sealed, clay refilling thickness is 0.3～0.4m；Then
The air compressor machine that startup is connected with drilling rod air intake duct, the space below rubber bulb forms negative pressure, closes when negative pressure reaches 75～85MPa
Air compressor machine is closed, starting the siphon suction dredge being connected with dredging tube carries out suction operation；
Duct can be backfilled with sand after correction purpose is reached, and continue the sedimentation situation for observing open caisson, and the sedimentation of 7 days back open caissons is in
Unsteady phenomena, i.e. settling amount carry out the grouting and reinforcing soil body more than 0.05mm/d.
2. the method for correcting error of open caisson according to claim 1, is characterized in that mud extraction hole depth determines according to soil property situation, when
When open caisson bottom is clay, mud extraction hole depth is 2m below open caisson bottom；When open caisson bottom is silt, mud extraction hole depth is heavy
1.5m below bottom；When open caisson bottom is muck soil, mud extraction hole depth is 1m below open caisson bottom；When open caisson bottom is
During sand, mud extraction hole depth is 0.5m below open caisson bottom.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611189590.2A CN106638648B (en) | 2016-12-13 | 2016-12-13 | The method for correcting error of open caisson |
| CN201810855115.7A CN109024648B (en) | 2016-12-13 | 2016-12-13 | Deviation rectifying construction method for open caisson |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611189590.2A CN106638648B (en) | 2016-12-13 | 2016-12-13 | The method for correcting error of open caisson |
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|---|---|---|---|
| CN201810855115.7A Division CN109024648B (en) | 2016-12-13 | 2016-12-13 | Deviation rectifying construction method for open caisson |
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| Publication Number | Publication Date |
|---|---|
| CN106638648A true CN106638648A (en) | 2017-05-10 |
| CN106638648B CN106638648B (en) | 2018-11-09 |
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| CN201810855115.7A Active CN109024648B (en) | 2016-12-13 | 2016-12-13 | Deviation rectifying construction method for open caisson |
| CN201611189590.2A Active CN106638648B (en) | 2016-12-13 | 2016-12-13 | The method for correcting error of open caisson |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61176719A (en) * | 1985-01-29 | 1986-08-08 | Sumitomo Metal Ind Ltd | Method and apparatus for penetration of structure into bottom ground under water |
| CN1058069A (en) * | 1991-06-26 | 1992-01-22 | 黄正轩 | The method of correcting and then reinforcing inclined house |
| JP2000345572A (en) * | 1999-06-09 | 2000-12-12 | Hiroshi Saito | Basement caisson construction method, lower frame member used therefor, internal panel member, external panel member, and separator |
| CN2654698Y (en) * | 2003-06-30 | 2004-11-10 | 唐业清 | Negative frictional force inclined correction precipitation well |
| CN102155021A (en) * | 2011-05-10 | 2011-08-17 | 河北二十冶工程技术有限公司 | Method for correcting open caisson in collapsible loess area |
| CN102995649A (en) * | 2012-12-04 | 2013-03-27 | 中国一冶集团有限公司 | Method for levelling inclination of open caisson in grading and layer-by-layer manner |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271045A (en) * | 2000-03-03 | 2000-10-25 | 天津建岩岩土工程有限公司 | Inclined building correcting method |
| CN1654749A (en) * | 2005-02-28 | 2005-08-17 | 广州大学 | Lean correcting and foundation consolidating method for building by filling water |
| RU2348760C1 (en) * | 2007-06-27 | 2009-03-10 | Вячеслав Николаевич Кровяков | Method of heeling compression of buildings constructed on water - saturated grounds |
| CN100567660C (en) * | 2007-12-26 | 2009-12-09 | 南京工业大学 | The sink well given force construction method of house deviation rectifying |
| CN103711154B (en) * | 2013-12-17 | 2015-10-21 | 上海岩土工程勘察设计研究院有限公司 | The rectifying of leaned building method of negative hole pressure boring soil digging |
| CN104763004B (en) * | 2014-01-02 | 2016-10-05 | 百盛联合建设集团有限公司 | Soil base building method for correcting error |
| CN105464154A (en) * | 2015-12-14 | 2016-04-06 | 神翼航空器科技（天津）有限公司 | Construction method of deep digging pipe |
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2016
- 2016-12-13 CN CN201810855115.7A patent/CN109024648B/en active Active
- 2016-12-13 CN CN201611189590.2A patent/CN106638648B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61176719A (en) * | 1985-01-29 | 1986-08-08 | Sumitomo Metal Ind Ltd | Method and apparatus for penetration of structure into bottom ground under water |
| CN1058069A (en) * | 1991-06-26 | 1992-01-22 | 黄正轩 | The method of correcting and then reinforcing inclined house |
| JP2000345572A (en) * | 1999-06-09 | 2000-12-12 | Hiroshi Saito | Basement caisson construction method, lower frame member used therefor, internal panel member, external panel member, and separator |
| CN2654698Y (en) * | 2003-06-30 | 2004-11-10 | 唐业清 | Negative frictional force inclined correction precipitation well |
| CN102155021A (en) * | 2011-05-10 | 2011-08-17 | 河北二十冶工程技术有限公司 | Method for correcting open caisson in collapsible loess area |
| CN102995649A (en) * | 2012-12-04 | 2013-03-27 | 中国一冶集团有限公司 | Method for levelling inclination of open caisson in grading and layer-by-layer manner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109024648B (en) | 2020-08-28 |
| CN106638648B (en) | 2018-11-09 |
| CN109024648A (en) | 2018-12-18 |
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Effective date of registration: 20201222 Address after: 225700 industrial concentration area, Xinduo Town, Xinghua City, Taizhou City, Jiangsu Province Patentee after: JIANGSU TANGYUAN BIOLOGICAL POWER Co.,Ltd. Address before: Room 302, building 11, Jingshan group, Wenzhou City, Zhejiang Province 325000 Patentee before: Ye Xiangzhu |