CN104032762B - A kind of dewatering well gug device for base pit dewatering construction - Google Patents
A kind of dewatering well gug device for base pit dewatering construction Download PDFInfo
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- CN104032762B CN104032762B CN201410250234.1A CN201410250234A CN104032762B CN 104032762 B CN104032762 B CN 104032762B CN 201410250234 A CN201410250234 A CN 201410250234A CN 104032762 B CN104032762 B CN 104032762B
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- still pipe
- welded still
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- gug
- dewatering
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Abstract
The invention discloses a kind of dewatering well gug device for base pit dewatering construction, it is characterized in that: comprise the first welded still pipe (1) and the second welded still pipe (3), described the first welded still pipe (1) diameter is greater than the second welded still pipe (3), and described the first welded still pipe (1) is connected by reducer union connector (2) with the second welded still pipe (3); Described welded still pipe lower end is supported by reinforcing bar (4), and is fixed in the dewatering well of foundation ditch by building plain concrete pier (5); Described welded still pipe interlude is welded to connect by connector of steel tube (6) and bank protection girder steel (7); Described the first welded still pipe (1) is connected by reducing connector (2) with the second welded still pipe (3). Dewatering well gug device of the present invention utilizes plain concrete pier and connector of steel tube to be connected and fixed, and is not damaging on the basis of precipitation, reaches precipitation object, and precipitation work completes, and takes out water pump, then adopts concrete that dewatering well is filled up. The present invention can be adapted to that project occupation of land area is large and underground water content is more, year amplitude variationization is large, and the engineering that arranges in foundation ditch of dewatering well.
Description
Technical field
The present invention relates to a kind of dewatering well gug device for base pit dewatering construction.
Background technology
Along with building industry skyscraper is on the increase, in earth excavation process, often can run into base pit dewatering at presentSituation, underground water is to reinforced concrete structure tool micro-(weak) corrosivity sometimes. In order to prevent at earth excavationWith stop causing level of ground water to go up (comprising flexible post-cast strip and sedimentation, watering from structure post-cast strip because of precipitationBand) locate to turn one's coat, prevent from, because basement waterproofing impacts structure foundation basis, not only affecting construction quality,And cause unnecessary economic loss, cause serious social influence. So in the time of backfilling of earthwork, necessaryBy all dewatering well absolute altitudes rise to positive negative zero with ensure dewatering project carry out smoothly, treat post-cast strip build complete,After precipitation completes, water pump can also be recycled, there is good economic benefit
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dewatering well gug dress for base pit dewatering constructionPut, can effectively prevent from going up from structure post-cast strip at earth excavation with because precipitation stops causing level of ground waterPlace's problem of turning one's coat, guarantees that dewatering project construction carries out smoothly.
Technical problem to be solved by this invention is achieved through the following technical solutions:
For a dewatering well gug device for base pit dewatering construction, comprise the first welded still pipe and the second welderingConnect steel pipe, described the first welded still pipe diameter is greater than the second welded still pipe, described the first welded still pipe and secondWelded still pipe connects by reducing deformable joints connector; Reinforced bar support is passed through in described welded still pipe lower end, andBe fixed on by building plain concrete pier in the dewatering well of foundation ditch; Described welded still pipe interlude passes through steel pipe connectingFitting bank protection girder steel is fixedly connected with, and connects and has both effectively ensured that dewatering well was not damaged like this, can fall againPhreatic low, can also, after precipitation work completes, take out water pump, and adopting label is that C25 microdilatancy is mixedSolidifying soil, fills up dewatering well. Marque is C25 slightly expanded concrete, produces in gain in strength processVolumetric expansion, its inner generation compression and compressive strain, can compensate various contraction distortions, offset corresponding productRaw tension, effectively raises concrete crack resistance, has discharged most of energy during due to dilatancyAmount all occurs in the commitment of concrete curing, and now reinforced concrete member is in the plastic stage, therefore largeThe space of amount is easily compressed closely knit, simultaneously because free entringite crystalline particle has the effect of filling space,Space is further reduced, and densification significantly improves, and various factors comprehensive function can greatly improveConcrete internal microstructure, makes it have good anti-permeability performance.
The first described welded still pipe had both ensured liter after being connected by reducing connector with the second welded still pipeThe height of well device, damages dewatering well while preventing again backfill soil construction, and the convenient water pump of installing, ensuresLowering level of ground water normally carries out.
Described reinforcing bar can effectively connect by reducing connector the first welded still pipe and the second welded still pipeThe single unit system that connects composition positions, and is then fixed by building plain concrete pier, then passes through instituteState welded still pipe interlude and be welded to connect by connector of steel tube and bank protection girder steel, prevent dewatering well gugDevice is toppled over, and has effectively ensured the perpendicularity of dewatering well, and the convenient water pump of placing, ensures that precipitation is normally orderlyCarry out.
Described welded still pipe interlude is by connector of steel tube and the welding of bank protection girder steel.
Described the first welded still pipe diameter is consistent with precipitation caliber aperture, has effectively ensured headroom in pipe, sideJust place water pump, reach the object of precipitation; Described the first welded still pipe can be selected DN600, and diameter is 600mm.
Described the second welded still pipe cross section is consistent with the first welded still pipe cross section, conveniently connects by reducer unionPart connects, convenient place water pump and adjust water pump location, as described in the second welded still pipe can select DN400,Be that diameter is 400mm, its cross section and the first welded still pipe are that DN600 cross section is close.
Described reinforcing bar is spiral, can be eight spirals, can select 8 C28, is eight threeThe level diameter spiral that is 28mm, can be from eight directions the first welded still pipe to dewatering well gug devicePosition, facilitate the follow-up plain concrete pier of building, ensured the perpendicularity of dewatering well gug device.
Described the second welded still pipe height is to be the distance from concentric reducer welded section to ground, as being highly1200m; Described deformable joints connector can enter described the first welded still pipe and the second welded still pipe effectivelyRow is reliable to be connected, and has ensured the globality of dewatering device, can select the highly deformable joints for 200mm to connectPart;
Described deformable joints connector upper and lower side welds with the first welded still pipe and the second welded still pipe respectivelyFixing; Described being welded and fixed as welding rod is welded and fixed, can be by adjusting size of current, make weld seam continuously,Smooth, effectively ensure welding quality, as select E43 series welding rod.
The spacer bar of described the first welded still pipe bottom, prevents effectively building gug before plain concrete pierThere is off normal situation in device, meets the effective location of gug device lower end the first welded still pipe, facilitates follow-up elementBuilding of concrete pier is fixing, and length can be selected the reinforcing bar of 1000mm.
Described welded still pipe and described bank protection girder steel are welded to connect fixing by twice connector of steel tube, not only protectDemonstrate,prove the perpendicularity of gug device, and while effectively preventing from gug device is installed, lower rebar and plain coagulationSoil is fixing insecure, causes gug device to topple over, and guarantees construction safety. Described connector 6 is by bank protection steelBeam and the first welded still pipe and the second welded pipe carry out twice be welded to connect fixing, the steel pipe of optional DN40, straightFootpath is 40mm.
The present invention adopts technique scheme to have following beneficial effect:
Dewatering well gug device of the present invention utilizes plain concrete pier and connector of steel tube to be connected and fixed,Do not damage on the basis of precipitation, effectively ensured the perpendicularity of dewatering well gug device, facilitated by fallingSecond welded still pipe on well device top is placed water pump to precipitation face and is carried out precipitation operation, places dewatering deviceTilt to cause water pump can not be placed into work layer, and then affect precipitation operation, effectively ensured Dewatering,Meet construction demand. Treat that agent structure binds, after has built post-cast strip, can stop precipitation operation,Take out water pump, then adopt slightly expanded concrete to fill. As to adopt commodity label be C25 slightly expanded concrete,Effectively raise concrete crack resistance, can greatly improve concrete internal microstructure, make itThere is good anti-permeability performance.
Brief description of the drawings
Fig. 1 is structural plan of the present invention schematic diagram.
Fig. 2 is gug device profile of the present invention.
In figure, 1-the first welded still pipe, 2-reducer union connector, 3-the second welded still pipe, 4-reinforcing bar,5-plain concrete pier, 6-connector of steel tube, 7-bank protection girder steel.
Detailed description of the invention
As Fig. 1, the one shown in Fig. 2, for base pit dewatering Dewatering well gug device, comprises the first weldingSteel pipe 1, becomes the reducer union connector 2 of DN400 and the second welded still pipe of DN400 by DN6003 connect, and the first welded still pipe 1 lower end adopts the reinforcing bar 4 of 8 C28, fixing with plain concrete pier 5, inBetween section be DN40 by bank protection girder steel 7 and welded still pipe connector 6 a steel pipe is welded and fixed.
The height of described the first welded still pipe 1 is 1200mm, and reducing deformable joints connector 2 is highly 200mm,The height of the second welded still pipe 3 is the distances from concentric reducer welded section to ground.
The upper and lower side of described reducer union connector 2 is welded and fixed by E43 series welding rod.
Described the first welded still pipe 1, bottom is supported by the reinforcing bar 4 of arranging 8 C28, its supporting steelMuscle length is 1000mm, is fixed by building plain concrete pier 5.
Described connector 6 is DN40 steel pipe, by bank protection girder steel 7 and the first welded still pipe 1 and the second weldable steelPipe 3 carries out twice and is welded to connect fixing.
Described dewatering well gug device, arranges along the position of original dewatering well, dewatering device lower end pipeFootpath and former dewatering well caliber are connected and fixed by lower rebar 4 and plain concrete 5 and connector of steel tube 6,Ensure that dewatering well well head and dewatering device coincide, and place water pump to falling by second welded still pipe 3 on topThe water surface carries out, by the well point precipitation operation of drawing water, not damaging on the basis of precipitation, thereby reaches the order of precipitation.
Claims (7)
1. for a dewatering well gug device for base pit dewatering construction, it is characterized in that: comprise the first weldingSteel pipe (1) and the second welded still pipe (3), described the first welded still pipe (1) diameter is greater than the second weldable steelPipe (3), described the first welded still pipe (1) and the second welded still pipe (3) are by reducer union connector (2)Connect; Described welded still pipe lower end is supported by reinforcing bar (4), and solid by building plain concrete pier (5)Fix in the dewatering well of foundation ditch; Described welded still pipe interlude is by twice connector of steel tube (6) and bank protection steelBeam (7) is welded to connect; Described the first welded still pipe (1) connects by reducing with the second welded still pipe (3)Connector (2) connects; Described the first welded still pipe (1) is consistent with precipitation caliber aperture; Described secondWelded still pipe (3) cross section is consistent with the first welded still pipe (1) cross section.
2. the dewatering well gug device for base pit dewatering construction according to claim 1, its featureBe: described the second welded still pipe (3) is highly the distance from concentric reducer welded section to ground; Described reducingConnector for joint (2) upper and lower side welds with the first welded still pipe (1) and the second welded still pipe (3) respectivelyConnect fixing.
3. the dewatering well gug device for base pit dewatering construction according to claim 1, its featureBe: the spacer bar (4) of described the first welded still pipe (1) bottom is spiral; Be eight screw-thread steelsMuscle.
4. the dewatering well gug device for base pit dewatering construction according to claim 2, its featureBe: described in be welded and fixed as being welded and fixed by welding rod.
5. the dewatering well gug device for base pit dewatering construction according to claim 3, its featureBe: described the first welded still pipe (1) is selected DN600; Described the second welded still pipe (3) is selected DN400;Described spiral reinforcing bar (4) is selected 8C28;
Described the second welded still pipe (3) is highly 1200m; Described reducer union connector (2) is highlyThe deformable joints connector of 200mm.
6. the dewatering well gug device for base pit dewatering construction according to claim 4, its featureBe: described welding electrode is selected E43 series welding rod.
7. the dewatering well gug device for base pit dewatering construction according to claim 1, its featureBe: spacer bar (4) length of described the first welded still pipe (1) bottom is selected the reinforcing bar of 1000mm; InstituteStating connector of steel tube (6) is DN40 steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410250234.1A CN104032762B (en) | 2014-06-06 | 2014-06-06 | A kind of dewatering well gug device for base pit dewatering construction |
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| CN201410250234.1A CN104032762B (en) | 2014-06-06 | 2014-06-06 | A kind of dewatering well gug device for base pit dewatering construction |
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| CN104032762A CN104032762A (en) | 2014-09-10 |
| CN104032762B true CN104032762B (en) | 2016-05-04 |
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| CN201410250234.1A Active CN104032762B (en) | 2014-06-06 | 2014-06-06 | A kind of dewatering well gug device for base pit dewatering construction |
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| CN113106926A (en) * | 2021-05-12 | 2021-07-13 | 中国二十二冶集团有限公司 | Construction method for foundation backfill of blown-fill sand reclamation foundation in coastal region |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61282513A (en) * | 1985-06-07 | 1986-12-12 | Takenaka Komuten Co Ltd | Reduction well construction work |
| JP2009197411A (en) * | 2008-02-19 | 2009-09-03 | East Japan Railway Co | Construction method for lowering underground water level |
| CN101761087A (en) * | 2009-12-29 | 2010-06-30 | 中国建筑第二工程局有限公司 | Rapid low-cost water level lowering well sealing device and construction method thereof |
| CN101936010A (en) * | 2010-08-19 | 2011-01-05 | 天津二十冶建设有限公司 | Construction method of dewatering well in underground concrete structure |
| 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 |
| CN203145029U (en) * | 2013-04-02 | 2013-08-21 | 中国建筑第七工程局有限公司 | Plugging structure for deep foundation pit dewatering well |
| CN103526766A (en) * | 2013-10-12 | 2014-01-22 | 中建八局第三建设有限公司 | Method for plugging relief well of deep foundation pit |
-
2014
- 2014-06-06 CN CN201410250234.1A patent/CN104032762B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61282513A (en) * | 1985-06-07 | 1986-12-12 | Takenaka Komuten Co Ltd | Reduction well construction work |
| JP2009197411A (en) * | 2008-02-19 | 2009-09-03 | East Japan Railway Co | Construction method for lowering underground water level |
| CN101761087A (en) * | 2009-12-29 | 2010-06-30 | 中国建筑第二工程局有限公司 | Rapid low-cost water level lowering well sealing device and construction method thereof |
| CN101936010A (en) * | 2010-08-19 | 2011-01-05 | 天津二十冶建设有限公司 | Construction method of dewatering well in underground concrete structure |
| 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 |
| CN203145029U (en) * | 2013-04-02 | 2013-08-21 | 中国建筑第七工程局有限公司 | Plugging structure for deep foundation pit dewatering well |
| CN103526766A (en) * | 2013-10-12 | 2014-01-22 | 中建八局第三建设有限公司 | Method for plugging relief well of deep foundation pit |
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| CN104032762A (en) | 2014-09-10 |
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