CN109610487A - A kind of Larsen steel sheet-pile cofferdam and its construction method - Google Patents
A kind of Larsen steel sheet-pile cofferdam and its construction method Download PDFInfo
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- CN109610487A CN109610487A CN201811456759.5A CN201811456759A CN109610487A CN 109610487 A CN109610487 A CN 109610487A CN 201811456759 A CN201811456759 A CN 201811456759A CN 109610487 A CN109610487 A CN 109610487A
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- steel sheet
- larsen steel
- sheet pile
- pile
- larsen
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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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
Abstract
The present invention relates to a kind of Larsen steel sheet-pile cofferdam and its construction method, which includes the Larsen steel sheet pile of several contiguous concatenations, and several Larsen steel sheet piles enclose U-shaped, and U-shaped open end is against on riverbank；It is land side that several Larsen steel sheet piles and riverbank, which enclose region, and the outside of several Larsen steel sheet piles is face water side；Several Larsen steel sheet piles and riverbank, which enclose, is arranged backfill in region, the top surface and Larsen steel sheet pile either flush, fabrication process platform and vehicle to run channel of backfill；The face water side of each Larsen steel sheet pile, which is successively bonded, is provided with buffer layer and anticorrosive board；Adjacent anticorrosive board is superimposed with each other in adjacent Larsen steel sheet pile junction, and is fixedly connected by a fixed mechanism.The present invention is fixed with erosion resistant coating and spongy layer in face water side, can preferably anticorrosion, guarantee construction quality, prolong the service life.
Description
Technical field
The present invention relates to a kind of Larsen steel sheet-pile cofferdam and its construction methods, belong to the realm of building construction.
Background technique
Larsen steel sheet pile is called U-shaped steel sheet pile, it in bridge construction cofferdam, large-scale pipeline laying, faces as a kind of building material
When irrigation canals and ditches excavate when make earth-retaining, water blocking, sand stop wall；Make revetment, retaining wall, levee revetment etc. in harbour, unloading apron, is sent out in engineering
Wave important function.Adjacent Larsen steel sheet pile interlocking structure can form a watertight structure (in sheet pile interlocking) to increase plate
The intensity of pilework.
Cofferdam refers in hydraulic engineering construction, to build permanent water conservancy projects, the provisional building enclosure built.Its
Effect is to prevent water and soil from building position into building, so that in cofferdam internal drainage, excavation pit builds building.One
As be mainly used in waterwork, except as formal building a part in addition to, cofferdam is generally removed after being finished.Cofferdam height
Higher than the peak level being likely to occur in the construction time.
Larsen steel sheet-pile cofferdam is using cofferdam made of Larsen steel sheet pile, existing for existing Larsen steel sheet-pile cofferdam
Problem is that water impact suffered by the face water side of Larsen steel sheet pile and fluctuation are big, steel plate corrosion is be easy to cause, to reduce steel
The service life of plate, influences construction progress.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of Larsen steel sheet-pile cofferdam and its construction method, the Larsens
Steel sheet-pile cofferdam and its construction method are fixed with erosion resistant coating and spongy layer in face water side, can preferably anticorrosion, guarantee construction
Quality prolongs the service life.
Technical scheme is as follows:
A kind of Larsen steel sheet-pile cofferdam, the Larsen steel sheet pile including several contiguous concatenations, several Larsen steel sheet piles enclose it is U-shaped,
And U-shaped open end is against on riverbank；It is land side that several Larsen steel sheet piles and riverbank, which enclose region, several Larsen steel sheet piles
Outside is face water side；Several Larsen steel sheet piles and riverbank, which enclose, is arranged backfill in region, the top surface of backfill and Larsen steel plate
Stake either flush, fabrication process platform and vehicle to run channel；The face water side of each Larsen steel sheet pile be successively bonded be provided with it is slow
Rush layer and anticorrosive board；Adjacent anticorrosive board is superimposed with each other in adjacent Larsen steel sheet pile junction, and connects by the way that a fixed mechanism is fixed
It connects；The fixed mechanism includes an alloy channel steel for being vertically arranged at adjacent anticorrosive board junction, alloy channel steel open end direction
Outside；It is spaced apart along vertical direction on the inner face that alloy channel steel is bonded with anticorrosive board and is equipped with the first threaded hole；Larsen steel plate
Stake is equipped with the second threaded hole, first threaded hole of screw bolt passes, two anticorrosive boards, buffer layer in the first threaded hole corresponding section
It is threadedly coupled afterwards with the second threaded hole.
Wherein, the Larsen steel sheet-pile cofferdam further includes several in Larsen steel sheet pile and riverbank enclosing region
Horizontal support rail；The both ends of support rail are fixedly connected with the backwater side surface of the Larsen steel sheet pile of two sides respectively；From river
The support rail of bank distalmost end is equipped with several knightheads；The length of knighthead can be adjusted；Knighthead one end is hinged
In on support rail, the other end is articulated on the backwater side surface of the Larsen steel sheet pile from riverbank distalmost end.
Wherein, the knighthead includes supervisor, loop bar and nut；It is responsible for one end and support rail is hinged, Zhu Guanling
One end is sheathed on outside loop bar, and the loop bar other end is fixedly connected with a supporter；It is responsible on the outer surface in loop bar one end and is equipped with
External screw thread；It is responsible for the adjusting sliding slot offered on the outer wall of loop bar one end along its length；Set rod outer surface fixation is set
There is the sliding block for being sheathed on and adjusting in sliding slot and be pierced by and adjusting in sliding slot, nut connect with supervisor's outer periphery threads and is resisted against under sliding block
Side；Turn nut, sliding block slide in adjusting sliding slot, increase or decrease in loop bar supervisor Yu and be arranged length, to adjust support
The length of brace.
Wherein, the anticorrosive board is the alloy-steel plate that outer end face is coated with anti-corrosion resin.
Wherein, the buffer layer is polyethylene foamed.
A kind of construction method of above-mentioned Larsen steel sheet-pile cofferdam, comprising the following steps:
One, it test pile: is needed before foundation construction according to the soil characteristics and physico-mechanical properties progress stake machine in geology exploration report
Selection；
Two, pile pulling is tested: being detected the performance of stake, is determined the machinery and mode of injection；
Three, equipment is marched into the arena marches into the arena with Larsen steel sheet pile；
Four, equipment debugging；
Five, stake position bottom obstacle cleaning；Remove ratchel or the hard object of bulk；It prevents that neighboring buildings is caused to split；
Six, it hangs and send Larsen steel sheet pile, Larsen steel sheet pile is in place, and stake machine presss from both sides Larsen steel sheet pile；
Seven, pitching pile；Design position is inserted into Larsen steel sheet pile lower end；
Eight, hammer piling；Hammering frequency is controlled, prevents the soil body from sinking；
Nine, stop to hammer into shape, stake machine is moved to next station, returns to step 6；Until so the lower end of Larsen steel sheet pile is both secured to
On riverbed；
Ten, buffer layer and anticorrosive board are successively bonded in the face water side of each Larsen steel sheet pile；Anti-corrosion on adjacent Larsen steel sheet pile
Plate is fixed by fixed mechanism；
11, the support rail of several levels is supported on the backwater side surface of Larsen steel sheet pile of two sides；By knighthead
Length rear support is regulated in the land side of the Larsen steel sheet pile opposite with riverbank.
12, the support rail of several levels is connected on the backwater side surface of Larsen steel sheet pile of two sides；It will support
Brace regulates the land side that the Larsen steel sheet pile opposite with riverbank is connected to after length.
13, it is enclosed toward several Larsen steel sheet piles and riverbank and backfill is set in region, the top surface of backfill and Larsen steel
Sheet pile either flush, fabrication process platform and vehicle to run channel.
Wherein, between above-mentioned steps seven and step 8 further include: plan-position control and the verticality of Larsen steel sheet pile
Control.
The invention has the following beneficial effects:
1, the present invention in face water side is fixed with erosion resistant coating and spongy layer, can preferably anticorrosion, guarantee construction quality, extension makes
Use the service life；And it is provided with support rail and knighthead, the effect that preferably support is firm can be played.
2, reliable construction quality of the present invention, safety coefficient are high.Larsen steel sheet-pile cofferdam water-stagnating effect with higher uses
The cofferdam of Larsen steel sheet pile construction is since support system is firm, and in the case where water body flows wash away for a long time, weir body can be accomplished
It is indeformable, do not flow head.Both it ensure that the quality in cofferdam was not influenced by environmental change, and also ensured that the peace of cofferdam interior construction operation
Entirely, the ecology in riverbed is more protected.
3, the present invention is environmentally protective, saves the duration.Traditional cofferdam backfill requires slope, and slope just occupies cofferdam
Interior effective usable floor area causes the backfill amount for building cofferdam big, pollutes environment, increases build and removes the difficulty in cofferdam
Degree.And Larsen steel sheet-pile cofferdam is using the vertical earth-retaining of steel sheet pile of environmental protection, backfill amount and to account for river area small, shortens build
With the cofferdam duration of dismounting, the pollution to river minimum ensure that, reduce the destruction to the ecological balance, and protect saving
Land resource.
4, remarkable in economical benefits of the present invention.Cofferdam is done by Larsen steel sheet pile, reduces backfilling of earthwork amount, Larsen steel sheet pile
It can also be used in turn, simple process of driving piles, easy to operate, mechanization degree is high, and the cofferdam built is indeformable, do not collapse,
It is convenient to remove, and reduces construction, maintenance and the cost for removing cofferdam.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing Larsen steel sheet pile；
Fig. 2 is overall structure diagram of the invention；
Fig. 3 is adjacent Larsen steel sheet-pile cofferdam connection structure part isometric schematic diagram of the invention；
Fig. 4 is adjacent Larsen steel sheet-pile cofferdam connection structure schematic top plan view of the invention；
Fig. 5 is the side structure schematic diagram of knighthead of the invention；
Fig. 6 is the structural schematic diagram that knighthead of the invention is resisted against Larsen steel sheet pile one end.
Appended drawing reference indicates in figure are as follows:
1, Larsen steel sheet pile；2, riverbank；3, buffer layer；4, anticorrosive board；5, fixed mechanism；51, alloy channel steel；52, inner face；
53, the first threaded hole；6, bolt；7, support rail；8, knighthead；81, it is responsible for；82, loop bar；83, nut；84, it adjusts and slides
Slot；85, sliding block.
Specific embodiment
It is next in the following with reference to the drawings and specific embodiments that the present invention will be described in detail.
Referring to Fig. 1-6, a kind of Larsen steel sheet-pile cofferdam, the Larsen steel sheet pile 1 including several contiguous concatenations, several Larsen steel
Sheet pile 1 encloses U-shaped, and U-shaped open end is against on riverbank 2；It is backwater that several Larsen steel sheet piles 1 and riverbank 2, which enclose region,
Side, the outside of several Larsen steel sheet piles 1 are face water side；Several Larsen steel sheet piles 1 and riverbank 2, which enclose, is arranged backfill in region,
The top surface and 1 either flush of Larsen steel sheet pile, fabrication process platform and vehicle to run channel of backfill；Each Larsen steel sheet pile 1
Face water side be successively bonded and be provided with buffer layer 3 and anticorrosive board 4；Adjacent anticorrosive board 4 is mutual in adjacent 1 junction of Larsen steel sheet pile
Overlapping, and be fixedly connected by a fixed mechanism 5；The fixed mechanism 5 is vertically arranged at adjacent 4 junction of anticorrosive board including one
Alloy channel steel 51,51 open end of alloy channel steel is towards outside；On the inner face 52 that alloy channel steel 51 is bonded with anticorrosive board 4 along
Vertical direction, which is spaced apart, is equipped with the first threaded hole 53；Larsen steel sheet pile 1 is equipped with the second screw thread in 53 corresponding section of the first threaded hole
Hole, a bolt 6 are threadedly coupled after sequentially passing through the first threaded hole 53, two anticorrosive boards 4, buffer layer 3 with the second threaded hole.
Larsen steel sheet-pile cofferdam further includes the support that several levels in region are enclosed set on Larsen steel sheet pile 1 and riverbank 2
Cross bar 7；The both ends of support rail 7 are fixedly connected with the backwater side surface of the Larsen steel sheet pile 1 of two sides respectively；It is farthest from riverbank 2
The support rail 7 at end is equipped with several knightheads 8；The length of knighthead 8 can be adjusted；8 one end of knighthead is articulated with
On support rail 7, the other end is connected on the backwater side surface of the Larsen steel sheet pile 1 from 2 distalmost end of riverbank.If due in dry drawing
When banketing in gloomy steel sheet pile 1 and the enclosing region of riverbank 2, Larsen steel sheet pile 1 is easy to be softened, and generation is inclined outwardly phenomenon, so
Setting support rail 7 and knighthead 8 socket several Larsen steel sheet piles.
The knighthead 8 includes supervisor 81, loop bar 82 and nut 83；It is responsible for 81 one end and support rail 7 is hinged, it is main
81 other end of pipe is sheathed on outside loop bar 82, and 82 other end of loop bar is fixedly connected with a supporter 9；Supervisor 81 is in 82 one end of loop bar
External screw thread is equipped on outer surface；Supervisor 81 offers adjusting sliding slot along its length on the outer wall of 82 one end of loop bar
84；82 outer surface of loop bar be fixed with is sheathed on adjust sliding slot 84 in and be pierced by adjust sliding slot 84 in sliding block 85, nut 83 with
It is responsible for the connection of 81 outer periphery threads and is resisted against 85 lower section of sliding block；Turn nut 83, sliding block 85 slide in adjusting sliding slot 84, increase
Or loop bar 82 is reduced in being arranged length in supervisor 81, to adjust the length of knighthead 8.
Preferably, the anticorrosive board 4 is the alloy-steel plate that outer end face is coated with anti-corrosion resin.
Preferably, the buffer layer 3 is polyethylene foamed.
A kind of construction method of above-mentioned Larsen steel sheet-pile cofferdam, comprising the following steps:
One, it test pile: is needed before foundation construction according to the soil characteristics and physico-mechanical properties progress stake machine in geology exploration report
Selection；
Two, pile pulling is tested: being detected the performance of stake, is determined the machinery and mode of injection；
Three, equipment is marched into the arena marches into the arena with Larsen steel sheet pile 1；
Four, equipment debugging；
Five, stake position bottom obstacle cleaning；Remove ratchel or the hard object of bulk；It prevents that neighboring buildings is caused to split；
Six, it hangs and send Larsen steel sheet pile 1, Larsen steel sheet pile 1 is in place, and stake machine presss from both sides Larsen steel sheet pile 1；
Seven, pitching pile；Design position is inserted into 1 lower end of Larsen steel sheet pile；
Eight, hammer piling；Hammering frequency is controlled, prevents the soil body from sinking；
Nine, stop to hammer into shape, stake machine is moved to next station, returns to step 6；Until so the lower end of Larsen steel sheet pile 1 is both secured to
On riverbed；
Ten, buffer layer 3 and anticorrosive board 4 are successively bonded in the face water side of each Larsen steel sheet pile 1；On adjacent Larsen steel sheet pile 1
Anticorrosive board 4 is fixed by fixed mechanism 5；
11, the support rail 7 of several levels is connected on the backwater side surface of Larsen steel sheet pile 1 of two sides；It will support oblique
Bar 8 regulates the land side that the Larsen steel sheet pile 1 opposite with riverbank 2 is connected to after length；
12, it is enclosed toward several Larsen steel sheet piles 1 and riverbank 2 and backfill is set in region, the top surface of backfill and Larsen steel plate
1 either flush of stake, fabrication process platform and vehicle to run channel.
Wherein, between above-mentioned steps seven and step 8 further include: plan-position control and the verticality of Larsen steel sheet pile 1
Control.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of Larsen steel sheet-pile cofferdam, it is characterised in that: the Larsen steel sheet pile (1) including several contiguous concatenations, several Larsens
Steel sheet pile (1) encloses U-shaped, and U-shaped open end is against on riverbank (2)；Several Larsen steel sheet piles (1) and riverbank (2) enclose
Region is land side, and the outside of several Larsen steel sheet piles (1) is face water side；Several Larsen steel sheet piles (1) and riverbank (2) enclose area
Backfill, the top surface of backfill and Larsen steel sheet pile (1) either flush are set in domain, and fabrication process platform and vehicle to run are logical
Road；The face water side of each Larsen steel sheet pile (1), which is successively bonded, is provided with buffer layer (3) and anticorrosive board (4)；Adjacent anticorrosive board (4)
It is superimposed with each other in adjacent Larsen steel sheet pile (1) junction, and is fixedly connected by a fixed mechanism (5)；The fixed mechanism (5)
The alloy channel steel (51) for being vertically arranged at adjacent anticorrosive board (4) junction including one, alloy channel steel (51) open end is towards outside；
It is spaced apart along vertical direction on the inner face (52) that alloy channel steel (51) is bonded with anticorrosive board (4) and is equipped with the first threaded hole
(53)；Larsen steel sheet pile (1) is equipped with the second threaded hole in the first threaded hole (53) corresponding section, and a bolt (6) sequentially passes through the
One threaded hole (53), two anticorrosive boards (4), buffer layer (3) are threadedly coupled with the second threaded hole afterwards.
2. Larsen steel sheet-pile cofferdam according to claim 1, it is characterised in that: further include set on Larsen steel sheet pile (1) and
Riverbank (2) encloses the support rail (7) of several levels in region；The both ends of support rail (7) the Larsen steel with two sides respectively
The backwater side surface of sheet pile (1) is fixedly connected；Support rail (7) from riverbank (2) distalmost end is equipped with several knightheads
(8)；The length of knighthead (8) can be adjusted；Knighthead (8) one end is articulated on support rail (7), and the other end is articulated with
On the backwater side surface of Larsen steel sheet pile (1) from riverbank (2) distalmost end.
3. Larsen steel sheet-pile cofferdam according to claim 2, it is characterised in that: the knighthead (8) includes supervisor
(81), loop bar (82) and nut (83)；It is responsible for (81) one end and support rail (7) hingedly, supervisor's (81) other end is sheathed on
Outside, loop bar (82) other end is fixedly connected loop bar (82) with a supporter (9)；(81) are responsible in the outer surface of loop bar (82) one end
On be equipped with external screw thread；Supervisor (81) offers adjusting sliding slot along its length on the outer wall of loop bar (82) one end
(84)；Loop bar (82) outer surface is fixed with the sliding block for being sheathed on and adjusting in sliding slot (84) and be pierced by and adjusting in sliding slot (84)
(85), nut (83) connect with supervisor's (81) outer periphery threads and is resisted against below sliding block (85)；Turn nut (83), sliding block (85)
In adjusting sliding in sliding slot (84), increases or decreases in loop bar (82) supervisor Yu (81) and be arranged length, to adjust knighthead
(8) length.
4. Larsen steel sheet-pile cofferdam according to claim 1, it is characterised in that: the anticorrosive board (4) is outer end face coating
There is the alloy-steel plate of anti-corrosion resin.
5. Larsen steel sheet-pile cofferdam according to claim 1, it is characterised in that: the buffer layer (3) is polyethylene foamed.
6. a kind of construction method of Larsen steel sheet-pile cofferdam as claimed in claim 2, it is characterised in that: the following steps are included:
Test pile: it is needed before foundation construction according to the soil characteristics and physico-mechanical properties progress stake machine choosing in geology exploration report
It selects；
Pile pulling experiment: the performance of stake is detected, determines the machinery and mode of injection；
Equipment is marched into the arena marches into the arena with Larsen steel sheet pile (1)；
Equipment debugging；
Stake position bottom obstacle cleaning；Remove ratchel or the hard object of bulk；It prevents that neighboring buildings is caused to split；
It hangs and send Larsen steel sheet pile (1), in place, stake machine presss from both sides Larsen steel sheet pile (1) to Larsen steel sheet pile (1)；
Pitching pile；Design position is inserted into Larsen steel sheet pile (1) lower end；
Hammer piling；Hammering frequency is controlled, prevents the soil body from sinking；
Stop hammering into shape, stake machine is moved to next station, returns to step 6；Until so the lower end of Larsen steel sheet pile (1) is both secured to
On riverbed；
Buffer layer (3) and anticorrosive board (4) are successively bonded in the face water side of each Larsen steel sheet pile (1)；Adjacent Larsen steel sheet pile (1)
On anticorrosive board (4) to pass through fixed mechanism (5) fixed；
The support rail (7) of several levels is supported on the backwater side surface of Larsen steel sheet pile (1) of two sides；By knighthead
(8) length rear support is regulated in the land side of the Larsen steel sheet pile (1) opposite with riverbank (2)；
The support rail (7) of several levels is connected on the backwater side surface of Larsen steel sheet pile (1) of two sides；By knighthead
(8) it is connected to and the land side of riverbank (2) opposite Larsen steel sheet pile (1) after regulating length；
It is enclosed toward several Larsen steel sheet piles (1) and riverbank (2) and backfill is set in region, the top surface of backfill and Larsen steel sheet pile
(1) either flush, fabrication process platform and vehicle to run channel.
7. the construction method of Larsen steel sheet-pile cofferdam according to claim 6, it is characterised in that: above-mentioned steps seven and step
Between eight further include: the control of the plan-position control and verticality of Larsen steel sheet pile (1).
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| CN201811456759.5A CN109610487A (en) | 2018-11-30 | 2018-11-30 | A kind of Larsen steel sheet-pile cofferdam and its construction method |
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| CN201811456759.5A CN109610487A (en) | 2018-11-30 | 2018-11-30 | A kind of Larsen steel sheet-pile cofferdam and its construction method |
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| CN110670577A (en) * | 2019-09-30 | 2020-01-10 | 中铁隧道局集团有限公司 | Reinforcing device for marine Larsen steel sheet pile and construction method thereof |
| CN113006093A (en) * | 2021-03-15 | 2021-06-22 | 中冶京诚工程技术有限公司 | Filling method of cone-shaped variable slope ratio compaction-free earthwork |
| CN113216150A (en) * | 2021-05-13 | 2021-08-06 | 苏州荣帆建设工程有限公司 | Larsen steel sheet pile and construction method thereof |
| CN113914328A (en) * | 2021-11-16 | 2022-01-11 | 中建安装集团有限公司 | Combined type multilayer Larsen steel sheet pile combined supporting structure and construction method thereof |
| CN114482077A (en) * | 2022-04-13 | 2022-05-13 | 三亚宏岩岩土工程有限公司 | Foundation ditch intelligence braced system with antiseismic impervious effect |
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| CN113216150A (en) * | 2021-05-13 | 2021-08-06 | 苏州荣帆建设工程有限公司 | Larsen steel sheet pile and construction method thereof |
| CN113914328A (en) * | 2021-11-16 | 2022-01-11 | 中建安装集团有限公司 | Combined type multilayer Larsen steel sheet pile combined supporting structure and construction method thereof |
| CN113914328B (en) * | 2021-11-16 | 2023-02-17 | 中建安装集团有限公司 | Combined type multilayer Larsen steel sheet pile combined supporting structure and construction method thereof |
| CN114482077A (en) * | 2022-04-13 | 2022-05-13 | 三亚宏岩岩土工程有限公司 | Foundation ditch intelligence braced system with antiseismic impervious effect |
| CN114482077B (en) * | 2022-04-13 | 2022-06-28 | 三亚宏岩岩土工程有限公司 | Foundation ditch intelligence braced system with impervious effect of antidetonation |
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