CN105178341A - Downcomer well temporary lengthening method - Google Patents
Downcomer well temporary lengthening method Download PDFInfo
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- CN105178341A CN105178341A CN201410236029.XA CN201410236029A CN105178341A CN 105178341 A CN105178341 A CN 105178341A CN 201410236029 A CN201410236029 A CN 201410236029A CN 105178341 A CN105178341 A CN 105178341A
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- well
- downcomer
- precipitation
- pipe
- steel tube
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Abstract
The invention relates to foundation pit construction, and especially relates to a downcomer well temporary lengthening method. The downcomer well temporary lengthening method comprises: step 1, manufacturing a cross hanging bracket according to dimensions of a downcomer well; step 2, performing pipeline sinking of a downcomer well, when a downcomer steel tube is lowered to proper height, uniformly welding four hanging bars extending on the downcomer steel tube on the downcomer steel tube; step 3, taking a UPVC double-well corrugated pipe whose pipe diameter is one size larger than that of the downcomer steel tube, sleeving the UPVC double-well corrugated pipe on the downcomer steel tube, sealing the downcomer steel tube and making the hanging bars distributed on the periphery of the UPVC double-well corrugated pipe; step 4, continuously performing pipeline sinking of the downcomer well until the downcomer is lowered to a preset position, welding the hanging bracket manufactured in the step 1 with the four hanging bars on the highest point of the tube well; step 5, operating sanding filling and well flushing; after dewatering is completed, excavating earth, and dismounting a hanging bar support and the hanging bars with the sequence and progress of earth excavation, when earth is excavated to a first bearing surface, using a hacksaw to cut and dismount the PVC double-well corrugated pipe which extends out of the surface of a foundation pit. The downcomer well is convenient to cut off, and simple in technology and cheap in price.
Description
Technical field
The present invention relates to foundation pit construction, particularly relate to downcomer well construction method.
Background technology
Current deep foundation pit support first support general all can below excavation of foundation pit surface, and the degree of depth is not etc.; The first also had supports and is positioned at below excavation of foundation pit face comparatively deep location, the construction of precipitation steel tube well need be carried out on foundation ditch surface, precipitation pipe well and periphery need after going along with sb. to guard him construction to carry out first time soil excavation, when needing to carry out Construction of Supporting after soil excavation to first supporting surface, at this moment the precipitation pipe well after construction will stand in great numbers in the middle of foundation ditch, lay to the gutter of other professional construction and precipitation pipe well in foundation ditch and bring inconvenience, just need cutting disassembling steel tube well at this moment.This is also more difficult in foundation ditch.
Summary of the invention
The present invention is intended to the defect overcoming prior art, provides a kind of precipitation pipe well interim spreading method.Precipitation pipe well of the present invention cuts off conveniently, and technology is simple and inexpensive.
In order to solve the problems of the technologies described above, a kind of interim spreading method of precipitation pipe well, it comprises:
Step one, makes a cross suspension bracket according to the size of precipitation pipe well:
Step 2, precipitation pipe well immersed tube, when precipitation steel pipe is deposited to proper height, what extend on precipitation steel pipe the uniform welding of precipitation steel pipe surrounding four hangs muscle;
Step 3, gets the UPVC double-wall corrugated pipe that caliber is greater than No. one, precipitation steel pipe and is sleeved on precipitation steel pipe, carries out to seal and make to hang muscle and divides and be listed in UPVC double-wall corrugated pipe surrounding;
Step 4, proceeds precipitation pipe well immersed tube to precalculated position, and suspension bracket step one made at pipe well highest point and described four hang muscle and weld together;
Step 5, back-up sand, well-flushing run; After completing precipitation, soil excavation, hangs muscle support along with the order of soil excavation and progress are removed and hangs muscle, when soil excavation is to first supporting surface, uses hacksaw to be cut by the UPVC both arms bellows on foundation ditch surface of emerging and removes.
The interim spreading method of described precipitation pipe well, the seal operation of described step 3 be use plastic foil at UPVC double-wall corrugated pipe and steel tube well junction, colour bar cloth material carries out tying up sealing.
Present invention process principle is simple, convenient operation.UPVC both arms bellows price is lower, easily processes, and can save material and the processing charges of steel tube well.Because of lightweight, remove easily, so safety is better.
Detailed description of the invention
Design a kind of construction method for this reason, above for first supporting surface downcast well pipe is changed into the UPVC both arms bellows more bigger than steel well casing by the method, UPVC double-wall corrugated pipe is enclosed within the steel well casing of bottom, steel well casing is symmetrically welded 4 and hangs muscle, the top of pipe well is installed and is hung muscle support and will hang muscle and strut, first heavyly when pipe well is installed establish steel tube well, heavy establishing is socketed UPVC double-wall corrugated pipe to during position easy to operate, then is carried out sealing by interface sinking to and can carry out the work such as follow-up back-up sand, well-flushing operation; And hang muscle support along with the order of soil excavation and progress are removed and hang muscle, when soil excavation is to first supporting surface, uses hacksaw to be cut by UPVC both arms bellows and remove.
Hang muscle support and hang muscle and can make according to the regular size of steel tube well, and can use be had enough to meet the need.
Pipe well hangs muscle and can weld heavy the establishing during pipe well of peace.
Install UPVC double-wall corrugated pipe can with steel tube well heavy establish and hang muscle weld and carry out simultaneously.
UPVC double-wall corrugated pipe and steel tube well junction can use the material such as plastic foil, colour bar cloth to carry out tying up sealing.
Remove along with pipe well to be cut open with the hacksaw that uses in order by the progress of cutting the earth piecemeal when removing UPVC pipe well.
Claims (2)
1. the interim spreading method of precipitation pipe well, it is characterized in that, it comprises:
Step one, makes a cross suspension bracket according to the size of precipitation pipe well:
Step 2, precipitation pipe well immersed tube, when precipitation steel pipe is deposited to proper height, what extend on precipitation steel pipe the uniform welding of precipitation steel pipe surrounding four hangs muscle;
Step 3, gets the UPVC double-wall corrugated pipe that caliber is greater than No. one, precipitation steel pipe and is sleeved on precipitation steel pipe, carries out to seal and make to hang muscle and divides and be listed in UPVC double-wall corrugated pipe surrounding;
Step 4, proceeds precipitation pipe well immersed tube to precalculated position, and suspension bracket step one made at pipe well highest point and described four hang muscle and weld together;
Step 5, back-up sand, well-flushing run; After completing precipitation, soil excavation, hangs muscle support along with the order of soil excavation and progress are removed and hangs muscle, when soil excavation is to first supporting surface, uses hacksaw to be cut by the UPVC both arms bellows on foundation ditch surface of emerging and removes.
2. the interim spreading method of precipitation pipe well according to claim 1, it is characterized in that can, the seal operation of described step 3 be use plastic foil at UPVC double-wall corrugated pipe and steel tube well junction, colour bar cloth material carries out tying up sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236029.XA CN105178341B (en) | 2014-05-30 | 2014-05-30 | Downcomer well temporary lengthening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236029.XA CN105178341B (en) | 2014-05-30 | 2014-05-30 | Downcomer well temporary lengthening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105178341A true CN105178341A (en) | 2015-12-23 |
| CN105178341B CN105178341B (en) | 2017-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410236029.XA Active CN105178341B (en) | 2014-05-30 | 2014-05-30 | Downcomer well temporary lengthening method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105178341B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003105779A (en) * | 2001-07-24 | 2003-04-09 | Nippon Steel Corp | Joining structure of steel pipe pile and upper structure and design method for it |
| CN201172828Y (en) * | 2008-03-19 | 2008-12-31 | 山西第六建筑有限公司 | Well-covering device for dewatering well |
| CN101565964A (en) * | 2009-05-25 | 2009-10-28 | 青岛恒生源集团建设有限公司 | Construction method for mounting outdoor embedded high-density polyethylene double-wall corrugated drain pipe |
| CN201502063U (en) * | 2009-08-05 | 2010-06-09 | 上海宝冶建设有限公司 | Wall pipe for dewatering well of deep well |
| JP2012001974A (en) * | 2010-06-17 | 2012-01-05 | Daiwa Odakyu Construction Co Ltd | Pc joint structure between pile and foundation of construction |
| CN202970602U (en) * | 2012-11-19 | 2013-06-05 | 江苏省苏中建设集团股份有限公司 | Plugging structure of high-rise building deep foundation pit large water volume tube well |
| CN103556644A (en) * | 2013-10-23 | 2014-02-05 | 中天建设集团有限公司 | Basement bottom plate dewatering well mouth plugging casing and construction method |
-
2014
- 2014-05-30 CN CN201410236029.XA patent/CN105178341B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003105779A (en) * | 2001-07-24 | 2003-04-09 | Nippon Steel Corp | Joining structure of steel pipe pile and upper structure and design method for it |
| CN201172828Y (en) * | 2008-03-19 | 2008-12-31 | 山西第六建筑有限公司 | Well-covering device for dewatering well |
| CN101565964A (en) * | 2009-05-25 | 2009-10-28 | 青岛恒生源集团建设有限公司 | Construction method for mounting outdoor embedded high-density polyethylene double-wall corrugated drain pipe |
| CN201502063U (en) * | 2009-08-05 | 2010-06-09 | 上海宝冶建设有限公司 | Wall pipe for dewatering well of deep well |
| JP2012001974A (en) * | 2010-06-17 | 2012-01-05 | Daiwa Odakyu Construction Co Ltd | Pc joint structure between pile and foundation of construction |
| CN202970602U (en) * | 2012-11-19 | 2013-06-05 | 江苏省苏中建设集团股份有限公司 | Plugging structure of high-rise building deep foundation pit large water volume tube well |
| CN103556644A (en) * | 2013-10-23 | 2014-02-05 | 中天建设集团有限公司 | Basement bottom plate dewatering well mouth plugging casing and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105178341B (en) | 2017-04-19 |
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