CN110439012A - It paddles the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam - Google Patents
It paddles the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam Download PDFInfo
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- CN110439012A CN110439012A CN201910661277.1A CN201910661277A CN110439012A CN 110439012 A CN110439012 A CN 110439012A CN 201910661277 A CN201910661277 A CN 201910661277A CN 110439012 A CN110439012 A CN 110439012A
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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
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Abstract
The present invention relates to the construction methods for open-cut foundation ditch combined steel sheet-pile cofferdam of paddling, comprising the following steps: 1) preparation of construction；2) inside steel sheet pile and outside plate stake plug；3) stake kerbstone cage river bottom protection is constructed；4) clay filled body filling construction；5) obturator is laid in bag；6) cast-in-place cover board construction；7) balance pressure loaded vehicle is arranged.The beneficial effects of the present invention are: limit top plate is arranged on the top of inside steel sheet pile and outside plate stake in the present invention, and the setting connection anchor cable between limit top plate and foundation soil body, upper limit can be carried out to inside steel sheet pile and outside plate stake；Simultaneously, inner support control position bar and inner sidewall compression bar is arranged in the present invention between inside steel sheet pile and outside plate stake, lateral wall compression bar is respectively set between inside steel sheet pile and limit top plate, between outside plate stake and limit top plate, can synchronize and provide internal support and external support to inside steel sheet pile and outside plate stake.
Description
Technical field
The present invention relates to one kind can reduce steel sheet pile control position difficulty, promotes cofferdam gap filling body construction efficiency, improvement
The construction method of the open-cut foundation ditch combined steel sheet-pile cofferdam of paddling of cofferdam structure stability and waterproof performance, belongs to base pit engineering
Field, suitable for open-cut foundation ditch construction work of paddling.
Background technique
It is to reduce surface water to the shadow of base pit stability when being influenced significant area progress excavation of foundation pit by surface water
It rings, a certain amount of water-retaining structure object need to be often set.Cofferdam is to examine in current engineering using a kind of more universal water-retaining structure object
Considering steel sheet pile cofferdam structure has many advantages, such as that construction efficiency is high, working procedure is few, recyclable, and the foundation pit that is commonly used for paddling is applied
In work.However in steel sheet pile cofferdam construction, steel sheet pile sets quality, the water proof effect in cofferdam, the stability of cofferdam structure
The often key points and difficulties of Engineering Control.
Have a kind of steel sheet-pile cofferdam for supporting cushion cap foundation pit in the prior art, feature include: inner support and by
Multiple steel sheet piles be sequentially connected enclose set made of cofferdam main body；The section of cofferdam main body is rectangle, and inner support is located at cofferdam main body
It is interior；Inner support includes side bar and horizontal brace, and side bar is arranged along the inner wall of cofferdam main body, and horizontal brace is opposite with cofferdam main body respectively
Two sides connection.The steel sheet pile cofferdam structure solves the lateral stability control problem of cofferdam structure, but due to using single
Steel sheet pile is arranged, closed water proof difficulty is larger；Moreover, the technology be not directed to steel sheet pile guiding set, impervious body inside steel sheet pile
The problems such as filling, cofferdam structure stability dynamic control, and the solution situation of these problems exactly influences steel sheet-pile cofferdam
The key of construction quality, water proof effect and stability.
In consideration of it, steel sheet pile control position difficulty can be reduced, promote cofferdam gap filling body construction by urgently inventing one kind at present
The construction method of the open-cut foundation ditch combined steel sheet-pile cofferdam of paddling of efficiency, improvement cofferdam structure stability and waterproof performance.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, providing a kind of can not only reduce steel sheet pile control position hardly possible
Degree, and can promote cofferdam gap filling body construction efficiency, moreover it is possible to improve paddling for cofferdam structure stability and waterproof performance
The construction method of open-cut foundation ditch combined steel sheet-pile cofferdam.
The construction method of this open-cut foundation ditch combined steel sheet-pile cofferdam of paddling, comprising the following steps:
1) preparation of construction: preparation inside steel sheet pile and outside plate stake are removed the weak soil in cofferdam construction region, are determined
The technique and concrete mix of site operation prepare material and device that construction needs；
2) inside steel sheet pile and outside plate stake plug: plugging inside steel sheet pile and outside plate respectively in foundation soil body
Stake, and limit top plate is set on the top of inside steel sheet pile and outside plate stake；It is arranged between limit top plate and foundation soil body
Anchor cable is connected, and fastening pressure is applied to connection anchor cable by anchor cable fastening bolt；The lower surface of limit top plate be respectively set with
The lateral wall compression bar that inside steel sheet pile and outside plate stake outer surface connect, and make the lateral wall pressing plate of lateral wall compression bar end with
Pressing plate limits falcon and is connected；In limit top plate be arranged inner support control position bar, make the bottom end of inner support control position bar by corner adjust hinge and
Inner sidewall compression bar is connected, and the rotational angle of inner sidewall compression bar is controlled by rotary spacing plate；
3) stake kerbstone cage river bottom protection is constructed: preposition obturator first is arranged inside gabion outsourcing muscle net, and makes gabion outsourcing muscle
Net top is connected to guiding filling pipe；Gabion outsourcing muscle net is placed in inside steel sheet pile and outside together with preposition obturator together again
The outside of steel sheet pile, and drop down onto it on foundation soil body under the effect of gravity；Then pipe is filled to gabion outsourcing muscle by guiding
Filling guiding obturator in net；
4) clay filled body filling construction: being laid with plate top guide rail in limit top plate, and makes to slide two pieces of connecting plate insertion
In the conduit that the opposite plate top guide rail of mirror image encloses；Make the top for sliding strut and bottom end respectively with sliding connecting plate and sliding
Fagging is connected firmly, and in sliding fagging upper surface setting sliding feed supplement case；Deviate from glide direction in the lower surface of sliding fagging
Set gradually sliding scraper plate, sliding feed supplement pipe and sliding plucking plate；It connect sliding connecting plate with drag-line is slid；It is drawn by sliding
Rope control sliding connecting plate and the plan-position for sliding scraper plate, it is synchronous by the vertical height of sliding strut control sliding scraper plate
The surface for carrying out clay filled body strikes off constructs with plucking；
5) obturator is laid in bag: clay filled body is filled to the absolute altitude of water proof pouch bottom surface, will be connected with pouch position-limited hoop
It connects firm water proof pouch to be placed between inside steel sheet pile and outside plate stake, and pouch position-limited hoop and limit top plate is made to pass through capsule
Bag control position muscle connection；The first obturator in filling baggy fabric into water proof pouch, then carry out the clay filled body construction of water proof pouch two sides；
6) it cast-in-place cover board construction: is first vertically spread in clay filled body with the seam crossing of outside plate stake and inside steel sheet pile
If vertical separate layer, then clay filled body and water proof pouch upper surface are flattened, then in clay filled body and water proof capsule
Bag upper surface is laid with lateral water barrier, and vertical separate layer and lateral water barrier is made to paste and connect；Make to slide strut bottom end and lid
Plate wiping tablet is connected firmly, and sink wiping tablet is arranged close to outside plate stake side in cover board wiping tablet, by sliding drag-line control
The position of cover board wiping tablet and sink wiping tablet processed；On lateral water barrier top, casting concrete forms cast-in-place cover board and longitudinal row
Sink, it is synchronous to collect extra cement slurry by collecting benefit slurry case, local repair slurry is carried out, by plane vibration by plate benefit slurry hole
Stamper carries out the surface vibration compacting of cast-in-place cover board concrete；
7) balance pressure loaded vehicle is arranged: after cast-in-place cover board forms intensity, balance pressure loaded vehicle being placed on cast-in-place cover board, and make to put down
Weighing apparatus ballast vehicle is connect with drag-line control position plate by ballast vehicle drag-line, and the position of ballast vehicle cable control balance pressure loaded vehicle is passed through.
As preferred: the step 2) limit top plate uses steel plate, along the longitudinal direction of inside steel sheet pile and outside plate stake
Even interval is laid, and limit top plate is respectively provided with top plate with the joint of inside steel sheet pile and outside plate stake and connect boots；The connection
Anchor cable uses steel wire bundle or spiral；The lateral wall compression bar is formed by screw rod and bolt combination, and both ends are respectively provided with
One adjust hinge, and make lateral wall compression bar one end first adjust hinge connect with limit top plate, the other end first adjust hinge with outside
Side wall pressing plate is connected；The pressing plate limit falcon and inside steel sheet pile and the lateral wall of outside plate stake are welded to connect；The inside
The both ends of wall pressure bar be respectively set corner adjust hinge and second adjust hinge, and make inner sidewall compression bar one end corner adjust hinge with it is interior
Support control position bar connects, and the second of the other end adjusts hinge and be connected with inner sidewall pressing plate, and inner sidewall pressing plate is separately positioned on inside steel plate
The inside of stake and outside plate stake；Rotary spacing plate is arranged in the top that inner support control position bar and corner adjust hinge connecting part,
Inner support control position bar top and limit top plate joint setting control position bar regulation cock.
As preferred: step 3) the gabion outsourcing muscle net cross section is in a rectangular trapezoid or right angled triangle, using reinforcing bar
Mesh sheet or metal welded mesh are bound；The preposition obturator uses concret block or block stone, and packed height is outside gabion
The 1/4~1/3 of packet muscle net height；The guiding obturator uses gravel.
As preferred: step 4) the plate top guide rail cross section is L-shaped, with limit top plate by being welded to connect or passing through
It is bolted；The sliding scraper plate is identical with the sliding bottom surface absolute altitude of feed supplement pipe, and the bottom surface absolute altitude for sliding scraper plate relatively slides plucking
High 3~the 5cm of bottom surface absolute altitude of plate；The sliding feed supplement case is made of steel plate or alloy sheets material, is in box, lower surface with
Feed supplement pipe connection is slid, side feed opening is arranged in sliding feed supplement case side, and sliding feed supplement case upper surface is connected to top feed pipe.
As preferred: step 5) the water proof pouch is sutured using geomembrane or sheet rubber, cross section in rectangle or
Ellipse；Obturator uses lightweight concrete material in the bag；The pouch position-limited hoop is made of steel plate or bar material,
It binds and connects with water proof pouch.
As preferred: step 6) the cover board wiping tablet and sink wiping tablet is all made of steel plate or alloy sheets roll,
Cover board scraper plate and sink scraper plate is respectively set in the front end of its glide direction, and marks the bottom surface of cover board wiping tablet and cover board scraper plate
It is high identical, keep sink wiping tablet identical as the bottom surface absolute altitude of sink scraper plate；The bottom surface of the cover board wiping tablet and cover board scraper plate is equal
The inclined gradient of steel sheet pile outward is set, the inclined drainage slope of steel sheet pile outward is formed；Slurry case and lid are mended in the collection
Plate scraper plate is welded to connect or is bolted, and collects and mends the upper surface that slurry case is placed in cover board wiping tablet, collects and mend slurry case and lid
Plate in plate wiping tablet mends the connection of slurry hole；The plane vibrator is placed in the upper surface of cover board wiping tablet.
As preferred: step 7) the balance pressure loaded vehicle is mainly made of ballast compartment and ballast block, under ballast compartment
Compartment idler wheel is arranged in surface；Described ballast vehicle drag-line one end is connected with balance pressure loaded vehicle, and the other end is connected with drag-line control position plate, and
The position of equipment control balance pressure loaded vehicle is drawn by foreign volume；Drag-line control position plate is set to the lower surface of limit top plate, flat
One block of drag-line control position plate is respectively arranged in weighing apparatus ballast vehicle two sides, and drag-line control position plate passes through ballast vehicle drag-line and connect with balance pressure loaded vehicle.
The beneficial effects of the present invention are:
(1) limit top plate is arranged on the top of inside steel sheet pile and outside plate stake in the present invention, and in limit top plate and ground
Setting connection anchor cable between the base soil body can carry out upper limit to inside steel sheet pile and outside plate stake；Meanwhile including the present invention
Inner support control position bar and inner sidewall compression bar are set between side steel sheet pile and outside plate stake, in inside steel sheet pile and limit top plate it
Between, between outside plate stake and limit top plate lateral wall compression bar is respectively set, can synchronize to inside steel sheet pile and outside plate stake
Internal support and external support are provided, the reliability of inside steel sheet pile and outside plate stake transverse direction control position is improved.
(2) present invention falls to gabion outsourcing muscle net on foundation soil body together together with preposition obturator, then by leading
Guiding obturator is filled into gabion outsourcing muscle net to filling pipe, not only can effectively promote the positioning of gabion outsourcing muscle net sinking
Precision, and can reduce the difficulty and project amount of guiding obturator filling, it can also be achieved the recycling of material.
(3) present invention can slide connecting plate by sliding cable control and slide the plan-position of scraper plate, be supportted by sliding
The vertical height of bar control sliding scraper plate, improves the quality of clay filled body surface evening；Meanwhile the present invention can synchronize progress
The surface of clay filled body strikes off constructs with plucking, it is closely knit can to improve obturator while improving site operation efficiency
Spend the quality of control.
(4) water proof pouch is arranged in the present invention in clay filled body, and fills into water proof pouch and to fill out in the bag of low severe
Body is filled, the water proof effect of structure can be not only improved, and can effectively reduce what outside plate stake and inside steel sheet pile were born
Lateral pressure.
(5) present invention is provided with cast-in-place cover board, lateral water barrier and vertical on the outside between steel sheet pile and inside steel sheet pile
Separate layer can not only improve the water isolating of cofferdam structure, and can reduce the difficulty that cast-in-place cover board is removed；Meanwhile this
Drainage slope and longitudinal drainage slot is arranged in cast-in-place cover board top surface in invention, can meet the needs that precipitation quickly excludes at the top of cofferdam,
Avoid water body lower the problem of seeping in cofferdam.
(6) balance pressure loaded vehicle is arranged in the present invention on cast-in-place cover board, and can be balanced by the ballast vehicle cable control of two sides
The position of ballast vehicle can meet the needs of cofferdam structure stability dynamic control.
Detailed description of the invention
Fig. 1 is that the present invention paddles open-cut foundation ditch combined steel sheet-pile cofferdam construction process figure；
Fig. 2 is that inside steel sheet pile and outside plate stake plug constructing structure schematic diagram；
Fig. 3 is a kerbstone cage river bottom protection constructing structure schematic diagram；
Fig. 4 is clay filled body filling constructing structure schematic diagram；
Fig. 5 is that the clay filled body surface face of Fig. 4 strikes off and plucking constructing structure side schematic view；
Fig. 6 is obturator and top clay filled body structural schematic diagram in bag；
Fig. 7 is cast-in-place cover board and longitudinal drainage slot constructing structure schematic diagram；
Fig. 8 is the cover board wiping tablet and sliding strut connecting structure side schematic view of Fig. 7；
Fig. 9 is balance pressure loaded vehicle setting structure schematic diagram；
Figure 10 is balance pressure loaded vehicle structural schematic diagram.
Description of symbols: steel sheet pile on the inside of 1-；2- outside plate stake；3- foundation soil body；4- limit top plate；5- connection anchor
Rope；6- anchor cable fastening bolt；7- lateral wall compression bar；8- lateral wall pressing plate；9- pressing plate limits falcon；10- inner support control position bar；11- corner
Adjust hinge；12- inner sidewall compression bar；13- rotary spacing plate；14- gabion outsourcing muscle net；The preposition obturator of 15-；16- guiding filling
Pipe；17- is oriented to obturator；18- plate top guide rail；19- slides connecting plate；20- slides strut；21- slides fagging；22- sliding is mended
Hopper；23- slides scraper plate；24- slides feed supplement pipe；25- slides plucking plate；26- slides drag-line；27- clay filled body；28- every
Water pocket bag；29- pouch position-limited hoop；30- pouch control position muscle；Obturator in 31- bags；The vertical separate layer of 32-；33- transverse direction water barrier；
34- cover board wiping tablet；35- sink wiping tablet；The cast-in-place cover board of 36-；37- longitudinal drainage slot；38-, which is collected, mends slurry case；39- plate is mended
Starch hole；40- plane vibrator；41- balance pressure loaded vehicle；42- drag-line control position plate；43- ballast vehicle drag-line；44- top plate connects boots；
45- first adjusts hinge；46- second adjusts hinge；47- inner sidewall pressing plate；48- controls position bar regulation cock；The compartment 49- idler wheel；The side 50-
Feed inlet；51- top feed pipe；52- cover board scraper plate；53- sink scraper plate；54- ballast compartment；55- ballast block；56- draining
Slope.
Specific embodiment
The present invention is described further below with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
Shown in referring to Fig.1, the construction method for open-cut foundation ditch combined steel sheet-pile cofferdam of paddling, including following construction procedure:
1) preparation of construction: preparation inside steel sheet pile 1 and outside plate stake 2 remove the weak soil in cofferdam construction region, really
Determine the technique and concrete mix of site operation, prepares material and device that construction needs；
2) inside steel sheet pile and outside plate stake plug: plugging inside steel sheet pile 1 and outside steel respectively in foundation soil body 3
Sheet pile 2, and limit top plate 4 is set on the top of inside steel sheet pile 1 and outside plate stake 2；In limit top plate 4 and foundation soil body 3
Between setting connection anchor cable 5, and pass through anchor cable fastening bolt 6 pairs of connection anchor cables 5 application fastening pressures；In the following table of limit top plate 4
The lateral wall compression bar 7 to connect with inside steel sheet pile 1 and 2 outer surface of outside plate stake is respectively set in face, and makes 7 end of lateral wall compression bar
The lateral wall pressing plate 8 in portion is connected with pressing plate limit falcon 9；Inner support control position bar 10 is set in limit top plate 4, makes inner support control position bar 10
Bottom end hinge adjusted by corner 11 be connected with inner sidewall compression bar 12, and pass through the control inner sidewall compression bar 12 of rotary spacing plate 13
Rotational angle；
3) stake kerbstone cage river bottom protection is constructed: preposition obturator 15 first is arranged inside gabion outsourcing muscle net 14, and makes outside gabion
14 top of packet muscle net is connected to guiding filling pipe 16；Gabion outsourcing muscle net 14 is placed in inside together with preposition obturator 15 together again
The outside of steel sheet pile 1 and outside plate stake 2, and drop down onto it under the effect of gravity on foundation soil body 3；Then pass through guiding filling
Pipe 16 fills guiding obturator 17 into gabion outsourcing muscle net 14；
4) clay filled body filling construction: being laid with plate top guide rail 18 in limit top plate 4, and makes to slide the insertion of connecting plate 19
In the conduit that the opposite plate top guide rail 18 of two blocks of mirror images encloses；Connect the top for sliding strut 20 and bottom end with sliding respectively
Plate 19 and sliding fagging 21 are connected firmly, and in sliding 21 upper surface of fagging setting sliding feed supplement case 22；In sliding fagging 21
Lower surface sets gradually sliding scraper plate 23, sliding feed supplement pipe 24 and sliding plucking plate 25 away from glide direction；Make to slide connecting plate
19 connect with sliding drag-line 26；By the plan-position of the sliding control of drag-line 26 sliding connecting plate 19 and sliding scraper plate 23, pass through
The vertical height of the control sliding scraper plate 23 of strut 20 is slid, the synchronous surface for carrying out clay filled body 27 strikes off constructs with plucking；
5) obturator is laid in bag: clay filled body 27 is filled to 28 bottom surface absolute altitude of water proof pouch, will be limited with pouch
The water proof pouch 28 that hoop 29 is connected firmly is placed between inside steel sheet pile 1 and outside plate stake 2, and makes pouch position-limited hoop 29 and limit
Position top plate 4 is connected by pouch control position muscle 30；The first obturator 31 in filling baggy fabric into water proof pouch 28, then carry out water proof pouch 28
The clay filled body 27 of two sides is constructed；
6) cast-in-place cover board construction: first in the seam crossing of clay filled body 27 and outside plate stake 2 and inside steel sheet pile 1 along perpendicular
To being laid with vertical separate layer 32, then clay filled body 27 and 28 upper surface of water proof pouch are flattened, be then laid with laterally every
Water layer 33, and paste vertical separate layer 32 with lateral water barrier 33 and connect；Make to slide 20 bottom end of strut and cover board wiping tablet 34
It is connected firmly, and sink wiping tablet 35 is set close to 2 side of outside plate stake in cover board wiping tablet 34, controlled by sliding drag-line 26
The position of cover board wiping tablet 34 and sink wiping tablet 35；Cast-in-place 36 He of cover board is formed in lateral 33 top casting concrete of water barrier
Longitudinal drainage slot 37, it is synchronous that extra cement slurry is collected by collection benefit slurry case 38, mends progress local repair in slurry hole 39 by plate
Slurry, the surface vibration compacting that cast-in-place 36 concrete of cover board is carried out by plane vibrator 40；
7) balance pressure loaded vehicle is arranged: after cast-in-place cover board 36 forms intensity, balance pressure loaded vehicle 41 is placed on cast-in-place cover board 36,
And it connect balance pressure loaded vehicle 41 by ballast vehicle drag-line 43 with drag-line control position plate 42, balance pressure is controlled by ballast vehicle drag-line 43
The position of loaded vehicle 41.
Referring to shown in Fig. 2~Fig. 9, open-cut foundation ditch combined steel sheet-pile cofferdam of paddling, in limit top plate 4 and foundation soil body 3
Between setting connection anchor cable 5；Inner support control position bar 10 and inner sidewall compression bar 12 are set between inside steel sheet pile 1 and outside plate stake 2,
Lateral wall compression bar 7 is set between inside steel sheet pile 1 and outside plate stake 2 and limit top plate 4；Pipe 16 is filled to gabion by guiding
Filling guiding obturator 17 in outsourcing muscle net 14；Pass through the plane of the sliding control of drag-line 26 sliding connecting plate 19 and sliding scraper plate 23
Position passes through the vertical height of the sliding control sliding scraper plate 23 of strut 20；Water proof pouch 28 is set in clay filled body 27, and
Obturator 31 in the bag of low severe is filled into water proof pouch 28；Setting drainage slope 56 and longitudinal row in cast-in-place 36 top surface of cover board
Sink 37, is arranged vertical separate layer 32 between cast-in-place cover board 36 and outside plate stake 2 and inside steel sheet pile 1, cast-in-place cover board 36 with
Lateral water barrier 33 is set between clay filled body 27, places balance pressure loaded vehicle 41 on cast-in-place cover board 36.
Inside steel sheet pile 1 and outside plate stake 2 are all made of SP-IV type Larsen steel sheet pile, and steel sheet pile width is 400mm, steel
Plate thickness is 15.5mm, length 20m.
Foundation soil body 3 is the cohesive soil of hard plastic state.
Limit top plate 4 is used and is formed with a thickness of the steel plate rolling of 10mm, width 30cm, length 4m.
Anchor cable 5 is connected using the steel wire bundle of Φ 15.2.
Anchor cable fastening bolt 6 uses OVM type anchorage.
Lateral wall compression bar 7 uses diameter to form for the screw rod of 30mm with bolt combination, the screw of the screw rod of bolt two sides
Fastening direction is opposite.
For lateral wall pressing plate 8 using forming with a thickness of the steel plate rolling of 2mm, planar dimension is 20cm × 20cm.
For pressing plate limit falcon 9 using forming with a thickness of 2mm steel plate rolling, planar dimension is 10cm × 30cm.
Inner support control position bar 10 is made of the steel pipe of diameter 60mm, wall thickness 2mm, and top setting connects with control position bar regulation cock 48
The screw connect；Using forming with a thickness of the steel plate rolling of 10mm, the center portion thereof position is arranged and inner support control position control position bar regulation cock 48
The screw that bar 10 connects.
Corner adjusts hinge 11 using the flexural pivot of diameter 30mm.
Inner sidewall compression bar 12 is made of the steel pipe of diameter 30mm.
Using forming with a thickness of the steel plate rolling of 10mm, width 10cm's rotary spacing plate 13 hangs down with inner support control position bar 10
It is straight to be welded to connect.
14 cross sections of gabion outsourcing muscle net are in a rectangular trapezoid, bound using reinforced mesh, and muscle net spacing is 2cm.
Preposition obturator 15 uses concret block, and packed height is the 1/3 of 14 height of gabion outsourcing muscle net, block width
For 10cm.
Guiding filling pipe 16 is cut using pvc pipe.
It is oriented to obturator 17 and uses gravel, nominal diameter 6cm.
Plate top guide rail 18 is used and is formed with a thickness of the steel plate rolling of 2mm, groove width 20cm, groove depth 8cm.
Sliding connecting plate 19 is highly width 18cm, 10cm using being made with a thickness of the steel plate of 10mm.
Sliding strut 20 is made of the steel pipe of diameter 60mm.
Sliding fagging 21 is connect using being made with a thickness of the steel plate of 10mm with sliding 20 vertical welding of strut.
Sliding feed supplement case 22 is in box, volume 0.5m using being made with a thickness of the alloy sheets material of 3mm3。
Sliding scraper plate 23 uses to be made with a thickness of the steel plate of 10mm, height 20cm, width 3m.
Sliding feed supplement pipe 24 uses diameter to be made of the steel pipe of 30mm.
Plucking plate 25 is slid using the steel plate with a thickness of 10mm, length 10cm, width 2cm.
Sliding drag-line 26 uses diameter to be made of the wirerope of 10mm.
Clay filled body 27 is using impervious good clay.
Water proof pouch 28 is used and is sutured with a thickness of the geomembrane of 2mm.
Pouch position-limited hoop 29 is used and is made with a thickness of the steel plate materials of 1mm, width 6cm.
Pouch control position muscle 30 uses diameter for the wirerope of 10mm.
Obturator 31 uses severe for 0.8g/cm in bag3Lightweight concrete material.
Vertical separate layer 32 and lateral water barrier 33 are all made of the geomembrane with a thickness of 2mm.
Using forming with a thickness of the steel plate rolling of 2mm, width is 30cm for cover board wiping tablet 34 and sink wiping tablet 35.
Cast-in-place cover board 36 uses strength grade to pour for the concrete material of C30.
The depth of longitudinal drainage slot 37 is 10cm, width 20cm.
Collection benefit slurry case 38 uses to be formed with a thickness of the steel plate rolling of 0.2mm, volume 0.5m3。
It is 6cm that plate, which mends slurry 39 diameter of hole,.
40 operating voltage of plane vibrator is 220v.
Balance pressure loaded vehicle 41 is made of ballast compartment 54 and ballast block 55；Wherein ballast compartment 54 is using with a thickness of 2mm
Steel plate rolling form, be highly width 1mm, 1m, length 2m.
Ballast block 55 uses the cube concrete precast block having a size of 20cm.
Drag-line control position plate 42 is used and is made with a thickness of the steel plate of 10mm.
Ballast vehicle drag-line 43 uses diameter to be made of the wirerope of 10mm.
Top plate connection boots 44 are highly 20cm using forming with a thickness of the steel plate rolling of 2mm, are placed on inside 1 He of steel sheet pile
The top of outside plate stake 2.
First adjusting hinge 45 and second adjusts the directional rotating hinge that hinge 46 is all made of diameter as 30mm.
For inner sidewall pressing plate 47 using forming with a thickness of the steel plate rolling of 2mm, planar dimension is 10cm × 10cm.
Compartment idler wheel 49 uses 6 cun of steel idler wheels.
The width of side feed opening 50 is 30cm, is highly 10cm；
Top feed pipe 51 uses diameter for the steel pipe of 60mm.
Cover board scraper plate 52 and sink scraper plate 53 are all made of to be formed with a thickness of the steel plate rolling of 10mm, is highly 8cm.
The gradient of drainage slope 56 is 3%, is tilted to 37 direction of longitudinal drainage slot.
Claims (7)
1. the construction method for open-cut foundation ditch combined steel sheet-pile cofferdam of paddling, it is characterised in that: including following construction procedure:
1) preparation of construction: preparation inside steel sheet pile (1) and outside plate stake (2) remove the weak soil in cofferdam construction region, really
Determine the technique and concrete mix of site operation, prepares material and device that construction needs；
2) inside steel sheet pile and outside plate stake plug: plugging inside steel sheet pile (1) and outside steel respectively in foundation soil body (3)
Sheet pile (2), and limit top plate (4) are set on the top of inside steel sheet pile (1) and outside plate stake (2)；Limit top plate (4) with
Setting connection anchor cable (5) between foundation soil body (3), and fastening pressure is applied to connection anchor cable (5) by anchor cable fastening bolt (6)；
The lateral wall to connect with inside steel sheet pile (1) and outside plate stake (2) outer surface is respectively set in the lower surface of limit top plate (4)
Compression bar (7), and so that the lateral wall pressing plate (8) of lateral wall compression bar (7) end is limited falcon (9) with pressing plate and be connected；In limit top plate (4)
Upper setting inner support control position bar (10) makes the bottom end of inner support control position bar (10) adjust hinge (11) and inner sidewall compression bar (12) by corner
It is connected, and passes through the rotational angle of rotary spacing plate (13) control inner sidewall compression bar (12)；
3) stake kerbstone cage river bottom protection is constructed: preposition obturator (15) being first arranged inside gabion outsourcing muscle net (14), and makes outside gabion
Pipe (16) is filled with guiding and is connected in packet muscle net (14) top；Again by gabion outsourcing muscle net (14) together with preposition obturator (15) together
It is placed in the outside of inside steel sheet pile (1) and outside plate stake (2), and drops down onto it under the effect of gravity on foundation soil body (3)；So
(16) filling guiding obturator (17) into gabion outsourcing muscle net (14) is managed by guiding filling afterwards；
4) clay filled body filling construction: plate top guide rail (18) are laid on limit top plate (4), and keep sliding connecting plate (19) embedding
Enter in the conduit that the opposite plate top guide rail (18) of two blocks of mirror images encloses；Make slide strut (20) top and bottom end respectively with cunning
It moves connecting plate (19) and sliding fagging (21) is connected firmly, and in sliding fagging (21) upper surface setting sliding feed supplement case (22)；
Sliding scraper plate (23), sliding feed supplement pipe (24) and sliding is set gradually away from glide direction in the lower surface of sliding fagging (21) to draw
Hair plates (25)；It connect sliding connecting plate (19) with drag-line (26) are slid；Pass through sliding drag-line (26) control sliding connecting plate
(19) and the plan-position of sliding scraper plate (23) is synchronized by the vertical height of sliding strut (20) control sliding scraper plate (23)
The surface for carrying out clay filled body (27) strikes off constructs with plucking；
5) obturator is laid in bag: clay filled body (27) is filled to the absolute altitude of water proof pouch (28) bottom surface, will be limited with pouch
The water proof pouch (28) that hoop (29) is connected firmly is placed between inside steel sheet pile (1) and outside plate stake (2), and limits pouch
Hoop (29) is connect with limit top plate (4) by pouch control position muscle (30)；The first obturator into water proof pouch (28) interior filling baggy fabric
(31), then carry out water proof pouch (28) two sides clay filled body (27) construction；
6) cast-in-place cover board construction: first on the seam crossing edge of clay filled body (27) and outside plate stake (2) and inside steel sheet pile (1)
It is vertically laid with vertical separate layer (32), then clay filled body (27) and water proof pouch (28) upper surface is flattened, then exist
Clay filled body (27) and water proof pouch (28) upper surface are laid with lateral water barrier (33), and make vertical separate layer (32) and lateral
Water barrier (33) pastes connection；Sliding strut (20) bottom end is set to be connected firmly with cover board wiping tablet (34), and in cover board wiping tablet
(34) close to outside plate stake (2) side setting sink wiping tablet (35), pass through sliding drag-line (26) control cover board wiping tablet (34)
And the position of sink wiping tablet (35)；On lateral water barrier (33) top, casting concrete forms cast-in-place cover board (36) and longitudinal row
Sink (37), it is synchronous to collect extra cement slurry by collecting benefit slurry case (38), mend slurry hole (39) progress local repair by plate
Slurry, the surface vibration compacting that cast-in-place cover board (36) concrete is carried out by plane vibrator (40)；
7) balance pressure loaded vehicle is arranged: after cast-in-place cover board (36) forms intensity, balance pressure loaded vehicle (41) being placed in cast-in-place cover board (36)
On, and it connect balance pressure loaded vehicle (41) by ballast vehicle drag-line (43) with drag-line control position plate (42), pass through ballast vehicle drag-line
(43) position of balance pressure loaded vehicle (41) is controlled.
2. the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam according to claim 1 of paddling, it is characterised in that: step
Rapid 2) the described limit top plate (4) uses steel plate, lays along inside steel sheet pile (1) and longitudinal uniform intervals of outside plate stake (2),
Limit top plate (4) is respectively provided with top plate with the joint of inside steel sheet pile (1) and outside plate stake (2) and connect boots (44)；The company
Anchor cable (5) are connect using steel wire bundle or spiral；The lateral wall compression bar (7) is formed by screw rod and bolt combination, both ends
It is respectively provided with the first adjusting hinge (45), and makes the first of lateral wall compression bar (7) one end to adjust hinge (45) and connects with limit top plate (4),
The first of the other end adjusts hinge (45) and is connected with lateral wall pressing plate (8)；Pressing plate limit falcon (9) and inside steel sheet pile (1) and
The lateral wall of outside plate stake (2) is welded to connect；The both ends of the inner sidewall compression bar (12) are respectively set corner and adjust hinge (11)
Hinge (46) is adjusted with second, and so that the corner of inner sidewall compression bar (12) one end is adjusted hinge (11) and connects with inner support control position bar (10),
The second of the other end adjusts hinge (46) and is connected with inner sidewall pressing plate (47), and inner sidewall pressing plate (47) is separately positioned on inside steel sheet pile
(1) and the inside of outside plate stake (2)；The top that inner support control position bar (10) and corner adjust hinge (11) connecting part is arranged
Rotary spacing plate (13), inner support control position bar (10) top and limit top plate (4) joint setting control position bar regulation cock (48).
3. the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam according to claim 1 of paddling, it is characterised in that: step
Rapid 3) described gabion outsourcing muscle net (14) cross section is in a rectangular trapezoid or right angled triangle, using reinforced mesh or metal welded mesh
It binds；The preposition obturator (15) uses concret block or block stone, and packed height is that gabion outsourcing muscle net (14) is high
The 1/4~1/3 of degree；The guiding obturator (17) uses gravel.
4. the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam according to claim 1 of paddling, it is characterised in that: step
Rapid 4) plate top guide rail (18) cross section is L-shaped, with limit top plate (4) by being welded to connect or being bolted；Institute
State sliding scraper plate (23) and sliding the bottom surface absolute altitude of feed supplement pipe (24) it is identical, slide scraper plate (23) bottom surface absolute altitude relatively slide plucking
High 3~the 5cm of bottom surface absolute altitude of plate (25)；The sliding feed supplement case (22) is made of steel plate or alloy sheets material, is in box,
Lower surface is connected to sliding feed supplement pipe (24), and sliding feed supplement case (22) side setting side feed opening (50) slides feed supplement case
(22) upper surface is connected to top feed pipe (51).
5. the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam according to claim 1 of paddling, it is characterised in that: step
Rapid 5) the described water proof pouch (28) is sutured using geomembrane or sheet rubber, and cross section is in rectangle or ellipse；In the bag
Obturator (31) uses lightweight concrete material；The pouch position-limited hoop (29) is made of steel plate or bar material, with water proof
Pouch (28) binding connection.
6. the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam according to claim 1 of paddling, it is characterised in that: step
Rapid 6) the described cover board wiping tablet (34) and sink wiping tablet (35) is all made of steel plate or alloy sheets roll, in its glide direction
Front end cover board scraper plate (52) and sink scraper plate (53) is respectively set, and make the bottom of cover board wiping tablet (34) Yu cover board scraper plate (52)
Face absolute altitude is identical, keeps sink wiping tablet (35) identical as the bottom surface absolute altitude of sink scraper plate (53)；The cover board wiping tablet (34) and
The bottom surface of cover board scraper plate (52) is respectively provided with steel sheet pile (2) the inclined gradient outward, forms steel sheet pile (2) inclined row outward
Water slope (56)；The collection mends slurry case (38) and is welded to connect or is bolted with cover board scraper plate (52), collects and mends slurry case
(38) it is placed in the upper surface of cover board wiping tablet (34), the plate mended on slurry case (38) and cover board wiping tablet (34) is collected and mends slurry hole
(39) it is connected to；The plane vibrator (40) is placed in the upper surface of cover board wiping tablet (34).
7. the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam according to claim 1 of paddling, it is characterised in that: step
Rapid 7) the described balance pressure loaded vehicle (41) is mainly made of ballast compartment (54) and ballast block (55), ballast compartment (54) lower surface
It is arranged compartment idler wheel (49)；The ballast vehicle drag-line (43) one end is connected with balance pressure loaded vehicle (41), the other end and drag-line control position
Plate (42) is connected, and the position of equipment control balance pressure loaded vehicle (41) is drawn by foreign volume；Drag-line control position plate (42) is set to
One piece of drag-line control position plate (42), drag-line control position plate is respectively arranged in balance pressure loaded vehicle (41) two sides in the lower surface of limit top plate (4)
(42) it is connect by ballast vehicle drag-line (43) with balance pressure loaded vehicle (41).
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| CN111139849A (en) * | 2020-01-03 | 2020-05-12 | 浙江大学城市学院 | Construction method of deep-buried underwater bearing platform steel sheet pile cofferdam |
| CN111691443A (en) * | 2020-06-22 | 2020-09-22 | 福建省华策建设集团有限公司 | Larsen steel sheet pile cofferdam and construction method thereof |
| CN112227391A (en) * | 2020-10-14 | 2021-01-15 | 安徽省交通建设股份有限公司 | Ecological steel sheet pile island-building cofferdam and construction method |
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| CN111691443B (en) * | 2020-06-22 | 2021-09-28 | 福建省华策建设集团有限公司 | Larsen steel sheet pile cofferdam and construction method thereof |
| CN112227391A (en) * | 2020-10-14 | 2021-01-15 | 安徽省交通建设股份有限公司 | Ecological steel sheet pile island-building cofferdam and construction method |
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| CN110439012B (en) | 2021-02-26 |
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