CN109853604A - A kind of static pressure waterpower suction open caisson construction method - Google Patents
A kind of static pressure waterpower suction open caisson construction method Download PDFInfo
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- CN109853604A CN109853604A CN201910226461.3A CN201910226461A CN109853604A CN 109853604 A CN109853604 A CN 109853604A CN 201910226461 A CN201910226461 A CN 201910226461A CN 109853604 A CN109853604 A CN 109853604A
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- well bore
- waterpower
- open caisson
- static pressure
- caisson construction
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Abstract
The invention discloses a kind of static pressure waterpower to suction open caisson construction method, the equipment such as mud machine and sludge pipe and the pipeline circulatory system are rushed by the way that waterpower is arranged in shaft bottom, the modes such as bored concrete pile and upper beam are arranged in well bore periphery, so that well bore can smoothly be sunk in such a way that static-force hydraulic cooperates waterpower suction when drainage open caisson construction does not meet local layer of sand, it can also rectify a deviation simultaneously to the differential settlement of well bore in sinking watching, it is extremely applicable to disaster relief and rescue or duration tighter engineering, it can effectively solve the problem that the problem of open caisson construction under complex geological condition, significantly improve construction quality, reduce the construction period, save working sources, reduce construction cost.
Description
Technical field
The present invention relates to Open caisson construction technology fields, and in particular to a kind of static pressure waterpower suction open caisson construction method.
Background technique
Open caisson construction is the stack shell that opening armored concrete is first made on ground or melt pit, after reaching some strength,
In pit shaft layering cut the earth, muck haulage, as native face gradually decreases in well, open caisson stack shell overcomes and Tu Bi by its own gravity
Between frictional resistance, constantly sink and a kind of deep base in place or underground engineering construction technique.
China has a vast territory, and Geological Differences in all parts of the country are more apparent.Coastal areas of southern China area due to geographical location,
Usually all comprising a large amount of mud, muck soil and soft clay etc. in sub-surface.Water content is larger in these soil layers, soil property
Hole is larger, and soil layer seepage of water is poor, and plasticity is strong, intensity difference, this is resulted in when the coastal south carries out construction
It needs to carry out a large amount of open caisson construction.It is feasible that the softer area of soil layer, which carries out open caisson construction, but may in open caisson construction
It will appear the problems such as subsidence velocity is excessively slow or uneven, when particularly meeting layer of sand during sinking, single waterpower suctions method
Fetching water will be difficult to smoothly sink, and extremely delay the duration and expend resource.How correctly, reasonably matched using waterpower suction method
Closing novel method open caisson construction technique is a critical issue for currently needing to pay attention to.
Summary of the invention
To solve the above problems, the present invention provides a kind of static pressure waterpower to suction open caisson construction method, can effectively solve the problem that
The problem of open caisson construction under complex geological condition saves working sources, reduces construction cost.
The specific technical proposal of the invention is:
A kind of static pressure waterpower suction open caisson construction method, steps are as follows:
1) before well bore is prefabricated, bored concrete pile of first symmetrically constructing on the outside of well bore quadrangle controls stake top absolute altitude to ground or more
0.5 meter, it is inserted into steel lattice column, wherein 3 meters, exposed 2 meters in steel lattice column insertion bored concrete pile；
2) section steel beam is installed in the steel lattice column end at well bore same angle, with steel lattice column firm welding；
3) arrangement waterpower suctions system, and it includes hydrodynamic cleaning machine, suction dredge, high-pressure hydraulic pump that waterpower, which suctions system, wherein high
Water pump setting is placed on the outside of well bore；Hydrodynamic cleaning machine and its pipeline are arranged in well bore internal symmetry, rush the hydraulic giant spray of mud machine
Center in head alignment well；It inhales mud and its center is arranged in well in pipeline；
4) hydraulic jack is placed between well bore quadrangle end and section steel beam, the every angle of well bore is placed with a hydraulic jack
Top；
5) hydrodynamic cleaning machine is opened, when because of the duration needs that well bore sinking progress or well bore blade foot is accelerated to meet harder soil layer
And dense sand stratum, and single waterpower suction method is unable to satisfy when requiring, and is started hydraulic jack, is utilized hydraulic jack and fashioned iron
The additional static pressure counter-force that beam effect generates makes well bore convenient for sinking；
6) when well bore sinks down into heavy position eventually, pouring underwater concrete carries out back cover, opens after intensity reaches requirement
Mud in suction dredge and pipeline abstraction well, static pressure waterpower suction open caisson construction work and complete.
Further, well bore quadrangle is both provided with section steel beam, the section steel beam in the opposite two corners of well bore in the step 2
It is parallel to each other.
Further, when hydraulic jack stroke reaches limit value in the step 5, top iron can be placed in well bore end,
Hydraulic jack is placed in top iron top again after placement is firm, hydraulic jack is restarted depending on field condition, repeats above-mentioned step
Static-pressure system is continued working suddenly.
Compared with prior art, advantages of the present invention are as follows: a kind of static pressure waterpower of the present invention suctions open caisson construction method, passes through
In shaft bottom, bored concrete pile and upper lateral is arranged in the setting equipment such as hydrodynamic cleaning machine and sludge pipe and the pipeline circulatory system, well bore periphery
The modes such as beam, so that can be incited somebody to action in such a way that static-force hydraulic cooperates waterpower suction when drainage open caisson construction does not meet local layer of sand
Well bore smoothly sinks, while can also rectify a deviation to the differential settlement of well bore in sinking watching, can effectively solve the problem that intricately
The problem of open caisson construction under the conditions of matter, and then construction quality is improved, the construction period is reduced, working sources are saved, reduction is constructed into
This.
Detailed description of the invention
Fig. 1 is the top view that a kind of static pressure waterpower of the present invention suctions open caisson construction method；
Fig. 2 is the A-A cross-section diagram of Fig. 1；
Fig. 3 is the B-B cross-section diagram of Fig. 1；
In figure: 1, well bore, 2, bored concrete pile, 3, steel lattice column, 4, section steel beam, 5, top iron, 6, hydraulic jack, 7, waterpower punching
Washing machine, 8, suction dredge, 9, high-pressure hydraulic pump.
Specific embodiment
Further detailed description is done to the present invention with embodiment with reference to the accompanying drawings of the specification.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of static pressure waterpower suctions open caisson construction method, and steps are as follows:
1) before well bore 1 is prefabricated, first symmetrically construct on the outside of 1 four jiaos of well bore bored concrete pile 2, control stake top absolute altitude to ground with
Upper 0.5 meter, it is inserted into steel lattice column 3, wherein steel lattice column 3 is inserted into bored concrete pile 23 meters, exposed 2 meters.
2) section steel beam 4 is installed in 3 end of steel lattice column at the same angle of well bore 1, section steel beam 4 and steel lattice column 3 weld jail
Gu.As shown in Figure 1,1 four jiaos of well bore are both provided with section steel beam 4, the section steel beam 4 in the opposite two corners of well bore 1 is parallel to each other, is used for
The stabilization for maintaining entire well bore in open caisson construction provides the template of a correction to well bore.
3) arrangement waterpower suctions system, and waterpower suction system includes hydrodynamic cleaning machine 7, suction dredge 8 and high-pressure hydraulic pump 9,
The setting of mesohigh water pump 9 is placed on the outside of well bore 1.
Hydrodynamic cleaning machine 7 and its pipeline are arranged in 1 internal symmetry of well bore, are rushed one permutation of Water-syringe shospay nozzle of mud machine and are shown more
Central-injection in a alignment well can be rinsed soil layer in well from left and right both direction；Suction dredge 8 and its pipeline setting exist
Center in well, for extracting mud in well.
4) hydraulic jack 6 is placed between 1 four jiaos of ends of well bore and section steel beam 4, the every angle of well bore 1 is symmetrically placed 2
A hydraulic jack 6,1 four jiaos of entire well bore place 8 altogether.
5) hydrodynamic cleaning machine is opened, when because of the duration needs that 1 sinking progress of well bore or 1 blade foot of well bore is accelerated to meet harder soil
Layer and dense sand stratum, and single waterpower suction method is unable to satisfy when requiring, and starts hydraulic jack 6, using hydraulic jack 6 with
The additional static pressure counter-force that the effect of section steel beam 4 generates makes well bore convenient for sinking.
When 6 stroke of hydraulic jack reaches limit value, top iron 5 can be placed in 1 end of well bore, it again will be hydraulic after placement is firm
Jack 6 is placed in top 5 top of iron, and view field condition restarting hydraulic jack 6, repeating the above steps enables static-pressure system
Enough continue working.
6) when well bore 1 sinks down into heavy position eventually, pouring underwater concrete carries out back cover, opens after intensity reaches requirement
Suction dredge 8 extracts mud in well, and static pressure waterpower suctions open caisson construction work and completes.
A kind of static pressure waterpower of the present invention suctions open caisson construction method, rushes mud machine and sludge pipe etc. by the way that waterpower is arranged in shaft bottom
Equipment and the pipeline circulatory system, the modes such as bored concrete pile and upper beam are arranged in well bore periphery, so that applying in not drainage open caisson
Work can smoothly sink well bore in such a way that static-force hydraulic cooperates waterpower suction when meeting local layer of sand, while can also be to sinking
The differential settlement of well bore is rectified a deviation in journey, is extremely applicable to disaster relief and rescue or duration tighter engineering, can effectively solve the problem that multiple
The problem of open caisson construction under miscellaneous geological conditions significantly improves construction quality, reduces the construction period, saves working sources, and reduction is applied
Work cost.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of static pressure waterpower suctions open caisson construction method, characterized in that steps are as follows:
1) before well bore (1) is prefabricated, first symmetrical construction bored concrete pile (2) on the outside of well bore (1) quadrangle, controls stake top absolute altitude to ground
It above 0.5 meter, is inserted into steel lattice column (3), wherein 3 meters, exposed 2 meters in steel lattice column (3) insertion bored concrete pile (2)；
2) section steel beam (4) are installed in steel lattice column (3) end at well bore (1) same angle, section steel beam (4) and steel lattice column (3) are welded
It connects securely；
3) arrangement waterpower suctions system, and waterpower suction system includes hydrodynamic cleaning machine (7), suction dredge (8), high-pressure hydraulic pump (9),
Mesohigh water pump (9) setting is placed on the outside of well bore (1)；Hydrodynamic cleaning machine (7) and its pipeline are in well bore (1) internal symmetry cloth
It sets, rushes center in the Water-syringe shospay nozzle alignment well of mud machine；Center is arranged in well in suction dredge (8) and its pipeline；
4) hydraulic jack (6) is placed between well bore (1) quadrangle end and section steel beam (4), well bore (1) every angle is symmetrically placed
There are 2 hydraulic jacks (6)；
5) open hydrodynamic cleaning machine (7), when because the duration need that well bore (1) sinking progress or well bore (1) blade foot is accelerated to meet it is harder
Hard stratum and dense sand stratum, and single waterpower suction method is unable to satisfy when requiring, and is started hydraulic jack (6), is utilized hydraulic thousand
The additional static pressure counter-force that jin top (6) and section steel beam (4) effect generates makes well bore convenient for sinking；
6) when well bore (1) sinks down into heavy position eventually, pouring underwater concrete carries out back cover, opens and inhales after intensity reaches requirement
Mud machine (8) extracts mud in well, and static pressure waterpower suctions open caisson construction work and completes.
2. a kind of static pressure waterpower according to claim 1 suctions open caisson construction method, characterized in that in the step 2)
Well bore (1) quadrangle is both provided with section steel beam (4), and the section steel beam (4) in the opposite two corners of well bore (1) is parallel to each other.
3. a kind of static pressure waterpower according to claim 1 suctions open caisson construction method, characterized in that in the step 5)
When hydraulic jack (6) stroke reaches limit value, top iron (5) can be placed in well bore (1) end, again by hydraulic jack after placement is firm
Top (6) is placed in top iron (5) top, restarts hydraulic jack (6) depending on field condition, repeats the above steps so that static-pressure system
It can continue working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910226461.3A CN109853604A (en) | 2019-03-25 | 2019-03-25 | A kind of static pressure waterpower suction open caisson construction method |
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| CN201910226461.3A CN109853604A (en) | 2019-03-25 | 2019-03-25 | A kind of static pressure waterpower suction open caisson construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761330A (en) * | 2019-10-25 | 2020-02-07 | 中铁第四勘察设计院集团有限公司 | Integral construction method for mud-water balance open caisson station in soft soil area |
| CN110761329A (en) * | 2019-10-25 | 2020-02-07 | 中铁第四勘察设计院集团有限公司 | Segmented construction method for mud-water balance open caisson station in soft soil area |
| CN110847202A (en) * | 2019-11-06 | 2020-02-28 | 春涛国际建筑有限公司 | Non-drainage sinking construction technology for multi-section open caisson low-strength well body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55159024A (en) * | 1979-05-30 | 1980-12-10 | Taisei Corp | Construction method for structure foundation |
| CN102155020A (en) * | 2011-01-28 | 2011-08-17 | 福建工程学院 | Open caisson construction method of reinforced concrete for soft soil layer |
| CN108487280A (en) * | 2018-06-27 | 2018-09-04 | 上海城建市政工程（集团）有限公司 | A kind of counter-force static pressure type caisson sinking construction method |
-
2019
- 2019-03-25 CN CN201910226461.3A patent/CN109853604A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55159024A (en) * | 1979-05-30 | 1980-12-10 | Taisei Corp | Construction method for structure foundation |
| CN102155020A (en) * | 2011-01-28 | 2011-08-17 | 福建工程学院 | Open caisson construction method of reinforced concrete for soft soil layer |
| CN108487280A (en) * | 2018-06-27 | 2018-09-04 | 上海城建市政工程（集团）有限公司 | A kind of counter-force static pressure type caisson sinking construction method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761330A (en) * | 2019-10-25 | 2020-02-07 | 中铁第四勘察设计院集团有限公司 | Integral construction method for mud-water balance open caisson station in soft soil area |
| CN110761329A (en) * | 2019-10-25 | 2020-02-07 | 中铁第四勘察设计院集团有限公司 | Segmented construction method for mud-water balance open caisson station in soft soil area |
| CN110761329B (en) * | 2019-10-25 | 2021-06-22 | 中铁第四勘察设计院集团有限公司 | Segmented construction method for mud-water balance open caisson station in soft soil area |
| CN110761330B (en) * | 2019-10-25 | 2021-06-22 | 中铁第四勘察设计院集团有限公司 | Integral construction method for mud-water balance open caisson station in soft soil area |
| CN110847202A (en) * | 2019-11-06 | 2020-02-28 | 春涛国际建筑有限公司 | Non-drainage sinking construction technology for multi-section open caisson low-strength well body |
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Application publication date: 20190607 |
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