CN209308050U - A kind of double-wall cofferdam and pier construction device - Google Patents
A kind of double-wall cofferdam and pier construction device Download PDFInfo
- Publication number
- CN209308050U CN209308050U CN201822030384.8U CN201822030384U CN209308050U CN 209308050 U CN209308050 U CN 209308050U CN 201822030384 U CN201822030384 U CN 201822030384U CN 209308050 U CN209308050 U CN 209308050U
- Authority
- CN
- China
- Prior art keywords
- double
- wall
- cofferdam
- wall cofferdam
- guide plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 239000003351 stiffener Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 30
- 239000010959 steel Substances 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
This application involves technical field of bridge construction, more particularly, to a kind of double-wall cofferdam and the pier construction device including the double-wall cofferdam.Double-wall cofferdam includes that an at least section double-wall cofferdam unit, double-wall cofferdam unit includes wall body, blade foot, inner bracing piece and guiding mechanism；Blade foot is set to wall body bottom end, and inner bracing piece is positioned horizontally in the inside of wall body inner panel, and is connected with the inner panel of wall body；Guiding mechanism includes connecting rod and guide plate, and guide plate is connected by connecting rod with wall body inner panel, and the curvature of the casing outside wall surface of the curvature and drilled pile of guide plate is adapted, and has spacing between guide plate and casing outside wall surface.Inner bracing piece can enhance the stability of double-wall cofferdam.Guide plate can play guiding and positioning action to the decentralization process of double-wall cofferdam.Therefore, the structural strength, stability of the double-wall cofferdam of the application are high, and water-stagnating effect is good, reasonable in design, are repeatedly adjusted without structure in the construction process, guarantee going on smoothly for engineering.
Description
Technical field
This application involves technical field of bridge construction, more particularly, to a kind of double-wall cofferdam and including the pier of the double-wall cofferdam
Body constructing device.
Background technique
Currently, China is in railroad bridge and builds fast-developing period, large quantities of across river, cross a river, Long span over strait
Railroad bridge is built.Deep water foundation cushion cap is the main projects of this kind of mega project, by natural conditions and technical reason
Influence, construction be often difficult to control, seriously affect its construction speed.Key technology as such bridge construction success or failure: steel
Cofferdam construction technology is constantly reformed.Currently, steel cofferdam becomes with steel sheet pile in the construction of Chinese Railway bridge deepwater foundation
2 kinds of main water-retaining structures and construction method.
But since steel cofferdam, steel sheet pile etc. are interim water-retaining structure objects, generally by unit in charge of construction's designed, designed, processing,
Decentralization etc., is easy to appear situations such as unreasonable structure engineering accident happens occasionally in the construction process.Water-retaining structure object is common
Accident mainly has: (1) structural strength, stability are inadequate, easily occur unstable phenomenon in the flood season, i.e. engineering circles are so-called
" making dumplings " causes property loss and progress to lag, hinders going on smoothly for engineering；(2) water-stagnating effect is poor, in work progress
A large amount of people must be spent to be blocked under water because of this power, material resources；(3) structure design owe rationally, in the construction process will to structure into
It goes and repeatedly adjusts, or even be transformed these to structural system all can seriously hinder construction progress, caused to unit in charge of construction not small
Influence.
Utility model content
The application's is designed to provide a kind of double-wall cofferdam and the pier construction device including the double-wall cofferdam, to solve
In the prior art steel cofferdam with steel sheet pile water-retaining structure stability is poor, water-stagnating effect is poor, needs repeatedly to adjust in work progress
Technical problem.
This application provides a kind of double-wall cofferdams, including an at least section double-wall cofferdam unit, the double-wall cofferdam unit packet
Include wall body, blade foot, inner bracing piece and guiding mechanism；
The blade foot is set to the wall body bottom end, and the inner bracing piece is positioned horizontally in the inside of the wall body inner panel,
And it is connected with the inner panel of the wall body；The guiding mechanism includes connecting rod and guide plate, and the guide plate passes through described
Connecting rod is connected with the wall body inner panel, and the curvature of the casing outside wall surface of the curvature and drilled pile of the guide plate is mutually fitted
Match, and there is spacing between the guide plate and the casing outside wall surface.
Further, the double-wall cofferdam includes double-wall cofferdam unit described in two sections, and double-wall cofferdam unit described in two sections is perpendicular
To splicing.
Further, the horizontal cross-section of the double-wall cofferdam is rectangle.
Further, the quantity of the guiding mechanism be it is multiple, multiple guiding mechanisms respectively with the drilled pile
Casing is corresponding.
Further, the spacing of the guide plate and the casing outside wall surface is 4cm.
Further, the junction of the connecting rod and the wall body inner panel is additionally provided with stiffener.
Further, be provided with lifting lug between the inner panel and outer panels of the wall body, the quantity of the lifting lug be it is multiple,
Multiple lifting lugs are located at identical height and are uniformly arranged around the circumferential direction of the double-wall cofferdam.
Further, communicating pipe is provided between the inner panel and outer panels of the wall body.
Further, the quantity of the inner bracing piece is multiple, multiple inner bracing pieces transpostion interval along the vertical direction
Setting, is separated into multilayer for the double-wall cofferdam unit.
Present invention also provides a kind of pier construction devices, including double-wall cofferdam described in any of the above-described technical solution.
Compared with prior art, the application has the beneficial effect that
The application's provides a kind of double-wall cofferdam, including an at least section double-wall cofferdam unit, the double-wall cofferdam unit
Including wall body, blade foot, inner bracing piece and guiding mechanism；
The blade foot is set to the wall body bottom end, and the inner bracing piece is positioned horizontally in the inside of the wall body inner panel,
And it is connected with the inner panel of the wall body；The guiding mechanism includes connecting rod and guide plate, and the guide plate passes through described
Connecting rod is connected with the wall body inner panel, and the curvature of the casing outside wall surface of the curvature and drilled pile of the guide plate is mutually fitted
Match, and there is spacing between the guide plate and the casing outside wall surface.
Wherein, the setting of inner bracing piece can enhance the stability of double-wall cofferdam.In guide plate and double-wall cofferdam unit
The corresponding setting of casing outside bottom hole stake can play guiding and positioning action to the decentralization process of double-wall cofferdam, it is ensured that
Double-wall cofferdam is precisely transferred, and has at regular intervals between guide plate and the casing outside wall surface, guarantees the smooth of double-wall cofferdam
Decentralization, avoids in the construction process repeatedly adjusting double-wall cofferdam.
Therefore, the structural strength, stability of double-wall cofferdam provided by the embodiments of the present application are high, and water-stagnating effect is good, and structure is set
Meter rationally, is repeatedly adjusted without structure in the construction process, guarantees going on smoothly for engineering.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the double-wall cofferdam provided by the embodiments of the present application in vertical view；
Fig. 2 is side structure schematic view of the double-wall cofferdam provided by the embodiments of the present application under the first visual angle；
Fig. 3 is side structure schematic view of the double-wall cofferdam provided by the embodiments of the present application under the second visual angle；
Fig. 4 is the position view of the guiding mechanism of double-wall cofferdam provided by the embodiments of the present application；
Fig. 5 is the overlooking structure diagram of the guiding mechanism of double-wall cofferdam provided by the embodiments of the present application；
Fig. 6 is the side structure schematic view of the guiding mechanism of double-wall cofferdam provided by the embodiments of the present application；
Fig. 7 is the structural schematic diagram of the lifting lug of double-wall cofferdam provided by the embodiments of the present application；
Fig. 8 is the structural schematic diagram of the lifting lug installation site of double-wall cofferdam provided by the embodiments of the present application.
Wherein, 1- wall body, 11- inner panel, 12- outer panels, 2- blade foot, 3- inner bracing piece, 4- guiding mechanism, 41- connection
Bar, 42- guide plate, 43- stiffener, 5- casing, 6- lifting lug, 61- base plate, 62- otic placode, 7- pin shaft, 8- communicating pipe.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.
The component of the utility model embodiment for usually describing and showing in attached drawing here can be with a variety of different
Configuration is to arrange and design.It therefore, is not below purport to the detailed description of the embodiments of the present invention provided in the accompanying drawings
In the range of limitation claimed invention, but it is merely representative of the selected embodiment of the utility model.
Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
It describes referring to Fig. 1 to Fig. 8 according to the double-wall cofferdam of some embodiments of the application and including the double-wall cofferdam
Pier construction device.
Embodiments herein provides a kind of double-wall cofferdam, including an at least section double-wall cofferdam unit, double-wall cofferdam list
Member includes wall body 1, blade foot 2, inner bracing piece 3 and guiding mechanism 4；
Referring to as 1 to shown in Fig. 5, blade foot 2 is set to 1 bottom end of wall body, and inner bracing piece 3 is positioned horizontally in 1 inner panel 11 of wall body
Inside, and be connected with the inner panel of wall body 1 11；Guiding mechanism 4 includes connecting rod 41 and guide plate 42, and guide plate 42 passes through
Connecting rod 41 is connected with 1 inner panel 11 of wall body, and the curvature of 5 outside wall surface of casing of the curvature and drilled pile of guide plate 42 is mutually fitted
Match, and there is spacing between 5 outside wall surface of guide plate 42 and casing.
Double-wall cofferdam provided by the embodiments of the present application includes an at least section double-wall cofferdam unit, and double-wall cofferdam unit includes wall
Body 1, blade foot 2, inner bracing piece 3 and guiding mechanism 4.
Wherein, to shown in Fig. 3, wall body 1 is the double-deck wall body 1, including inner panel 11 and outer panels 12 for reference such as 1；Inner panel
Steel case, panel back cord, ring flat-plate and circumferential angle steel, steel case, panel back cord, ring flat-plate and circumferential angle are provided between 11 and outer panels 12
The structure of double-wall cofferdam of the set-up mode and prior art of steel is identical, is no longer described in detail herein.
Referring to as shown in 2 and Fig. 3, blade foot 2 is set to the lower end surface of wall body 1, and blade foot 2 includes 2 panel of blade foot, 2 jiaos of blade foot
The set-up mode of steel, siffener angle and panel back cord, and 2 panel of blade foot, 2 angle steel of blade foot, siffener angle and panel back cord also with
The structure of the double-wall cofferdam of the prior art is identical, is no longer described in detail herein.
Referring to as shown in Figure 1 to Figure 3, inner bracing piece 3 is set to inside wall body 1, and specifically, inner bracing piece 3 is set to interior
The space interior that panel 11 surrounds, inner bracing piece 3 is horizontally disposed, and the both ends of inner bracing piece 3 are connected with inner panel 11 respectively.
The setting of inner bracing piece 3 can enhance the stability of double-wall cofferdam.
Referring to as shown in Figures 4 to 6, guiding mechanism 4 is also disposed on inner panel 11, and guiding mechanism 4 includes connecting rod 41
With guide plate 42, one end of connecting rod 41 is mutually welded with the inner wall of inner panel 11, the other end and guide plate 42 of connecting rod 41
It mutually welds, the setting corresponding with the casing 5 outside the bottom hole stake in double-wall cofferdam unit of guide plate 42, the transverse direction of guide plate 42
Section is in bending, and is bent to 5 direction of casing, and the curvature of guide plate 42 is corresponding with the curvature of 5 outside wall surface of casing consistent, is led
Setting to plate 42 can play guiding and positioning action to the decentralization process of double-wall cofferdam, it is ensured that and double-wall cofferdam is precisely transferred,
And have at regular intervals between 5 outside wall surface of guide plate 42 and casing, guarantee the smooth decentralization of double-wall cofferdam, avoids in work progress
In double-wall cofferdam is repeatedly adjusted.
Therefore, the structural strength, stability of double-wall cofferdam provided by the embodiments of the present application are high, and water-stagnating effect is good, and structure is set
Meter rationally, is repeatedly adjusted without structure in the construction process, guarantees going on smoothly for engineering.
To sum up, double-wall cofferdam provided by the embodiments of the present application is suitable for railway, highway, harbour, harbour etc. The water is deep and the current fast to cover
The deepwater foundation construction or construction period of the complex geological conditions such as cap rock thickness are nervous, the double-wall steel cofferdam construction in mud.
In one embodiment of the application, it is preferable that double-wall cofferdam includes two section double-wall cofferdam units, and two section double-walleds enclose
Weir unit vertically splices.
In this embodiment, design double-wall cofferdam includes two section double-wall cofferdam units, respectively first segment double-wall cofferdam list
Member and the second section double-wall cofferdam unit, two section double-wall cofferdam units vertically splice.In splicing, first segment double-wall cofferdam list
First butt welding between member and the second section double-wall cofferdam unit, then the elongated steel plate strip of wide 10cm thickness 10mm is pasted, fillet weld seam,
Weld bead height 6mm guarantees the accuracy and stability of two section double-wall cofferdam unit spliceds.
It should be noted that can according to the practical situations of double-wall cofferdam design double-wall cofferdam include a section, three sections or
More more piece double-wall cofferdam unit, and the height of every section double-wall cofferdam unit is also arranged as the case may be, does not do specific limit herein
It is fixed.
Reference is as shown in Figure 1 to Figure 3, in one embodiment of the application, it is preferable that the horizontal cross-section of double-wall cofferdam is
Rectangle.
In this embodiment, the horizontal cross-section of double-wall cofferdam is rectangle, i.e., entire double-wall cofferdam is square cofferdam structure.And
The direction across bridge of double-wall cofferdam is designed as 28.6m, and vertical bridge is to being designed as 21.6m.
In one embodiment of the application, it is preferable that the quantity of guiding mechanism 4 is multiple, multiple difference of guiding mechanisms 4
It is corresponding with the casing 5 of drilled pile.
In this embodiment, referring to shown in Fig. 4, the quantity of guiding mechanism 4 be it is multiple, multiple guiding mechanisms 4 respectively with brill
The casing 5 of hole stake is corresponding, guarantees that at least one guiding mechanism 4 of the casing 5 of the drilled pile of outer ring is corresponding to it and plays guiding
Effect.
Specifically, guiding mechanism 4 can be set to 12, to guarantee that cofferdam is smoothly transferred.
In such an embodiment, it is preferable the guiding mechanism 4 on inner panel 11 is provided with upper layer and lower layer along the vertical direction, on
Lower two layers of guiding mechanism 4 is corresponding on same vertical line, to can play twice guiding in double-wall cofferdam decentralization process
Positioning action further ensures the precision of double-wall cofferdam decentralization.
In one embodiment of the application, it is preferable that the spacing of guide plate 42 and 5 outside wall surface of casing is 4cm.
In this embodiment, shown in referring to figure 5 and figure 6, between designing between guide plate 42 and corresponding 5 outside wall surface of casing
Away from for 4cm, here away from the lower smooth decentralization that can either guarantee double-wall cofferdam, guide plate 42 can play guiding role again, protect
Demonstrate,prove the accurate decentralization of double-wall cofferdam.
It should be noted that scene can be according to the plan-position of casing and verticality adjustment 42 length of guide plate and guide plate
Spacing size between 42 and corresponding casing outside wall surface, to ensure that cofferdam decentralization is smooth.And the rigidity to guarantee guiding, guiding
All weld seams of mechanism 4 are fully welded, weld bead height 8mm, guarantee weldquality.
In one embodiment of the application, it is preferable that shown in referring to figure 5 and figure 6, connecting rod 41 and 1 inner panel of wall body
11 junction is additionally provided with stiffener 43.
In this embodiment, the stability being connect for enhancing guiding mechanism 4 with wall body 1, in connecting rod 41 and 1 inner face of wall body
The junction of plate 11 is additionally provided with stiffener 43.
In one embodiment of the application, it is preferable that referring to shown in Fig. 7 and Fig. 8, the inner panel 11 of wall body 1 and outside
Be provided with lifting lug 6 between plate 12, the quantity of lifting lug 6 be it is multiple, multiple lifting lugs 6 are located at identical height and the circumferential direction around double-wall cofferdam
It is uniformly arranged.
For convenience of the lifting of double-wall cofferdam, in this embodiment, it is provided between the inner panel 11 and outer panels 12 of wall body 1
Lifting lug 6, the axis direction of the lifting hole(eyelet) of lifting lug 6 is perpendicular to inner panel 11 and outer panels 12, and lifting hole(eyelet) runs through inner panel 11 and outside
Plate 12.In lifting, pin shaft 7 is inserted into lifting hole(eyelet), for hanging apparatus by being connected with pin shaft 7, double-wall cofferdam is hung in realization
Dress.
Specifically, the quantity of lifting lug 6 is multiple, and multiple lifting lugs 6 are uniformly arranged and are located at identical around the circumferential direction of double-wall cofferdam
Highly, double-wall cofferdam is lifted simultaneously by multiple lifting lugs 6 when lifting, the stability of lifting is more preferable.Preferably, lifting lug 6
Quantity be set as 8.
Preferably, referring to shown in Fig. 7, the structure of lifting lug 6 includes base plate 61 and otic placode 62, and otic placode 62 is set to bottom block
On, and the junction of otic placode 62 and base plate 61 is provided with stiffener 43 to enhance the intensity of lifting lug 6.
Specifically, lifting lug 6 is welded using the Q235B steel plate of thickness 10mm, and 6 component of lifting lug is fillet weld, and welding angle is high
Degree is not less than 8mm, and weld seam is second-order weld or more.Base plate 61 is mutually welded with 1 ring flat-plate of wall body, it is ensured that stress point safety.
In one embodiment of the application, it is preferable that shown in referring to Fig.1, the inner panel 11 and outer panels 12 of wall body 1 it
Between be provided with communicating pipe 8.
In this embodiment, it is the realization smooth suck sediment subsidence of double-wall cofferdam to design position, and keeps hydraulic pressure inside and outside cofferdam
Balance is provided with communicating pipe 8 between the inner panel 11 and outer panels 12 of wall body 1, is connected to inside and outside cofferdam communicating pipe 8.
Preferably, the quantity of communicating pipe 8 is multiple, and multiple communicating pipes 8 are uniformly distributed on cofferdam, and.Specifically, it is connected to
The quantity of pipe 8 is 16, and communicating pipe 8 is the steel pipe of Φ 300mm.
Preferably, multiple communicating pipes 8 are located at the identical height on cofferdam.
In one embodiment of the application, it is preferable that referring to figs. 1 to shown in Fig. 3, the quantity of inner bracing piece 3 be it is multiple,
Transpostion interval is arranged multiple inner bracing pieces 3 along the vertical direction, and double-wall cofferdam unit is separated into multilayer.
In this embodiment, the quantity of the inner bracing piece 3 of each double-wall cofferdam unit is multiple, multiple 3 edges of inner bracing piece
Vertical direction parallel interval square crossing setting, so that double-wall cofferdam unit is separated into multilayer, the inner bracing piece 3 of the bottom is
First layer inner bracing piece 3, upwards in turn respectively second layer inner bracing piece 3, third layer inner bracing piece 3 etc..It is multiple by being arranged
Spaced inner bracing piece 3 along the vertical direction can play multiple supporting role, so that double-wall cofferdam is under to double-wall cofferdam
It puts more preferable with stability in work progress.
In one embodiment of the application, it is preferable that 2 height 150cm of blade foot；Double-wall cofferdam inner panel 11 and outer panels
12 are all made of 6mm steel plate, and the inside and outside panel 12 of steel case uses 8mm steel plate；Panel back cord uses 75 × 50 × 8 angle steel of ∠, standard
Spacing 30cm；Panel back cord uses 12.6 fashioned iron, spacing 30cm at interior Support Position；Circumferential angle steel using 2 ∠ 100 ×
10；Ring flat-plate uses 10mm steel plate, and corner's steel case ring flat-plate uses 12mm steel plate, and partition panel uses 10mm steel plate.Manufacture craft must
It must guarantee its design size and weldquality, meet the requirement of water-retaining structure.
Embodiments herein additionally provides a kind of pier construction device, the double-wall cofferdam including any of the above-described embodiment.
In this embodiment, it due to the double-wall cofferdam that pier construction device includes above-described embodiment, thus is enclosed with double-walled
Whole beneficial effects on weir, then this repeats no more.
The embodiments of the present invention also provide a kind of double-wall cofferdam progress pier construction using any of the above-described embodiment
Method, it is mainly Muddy Bottoms clay and layer of sand that the double-wall cofferdam of the application, which is applied to geology at cofferdam construction, is tightly grabbed in construction
Firmly the essence of sinking of cofferdam is exactly to reduce the frictional resistance of cofferdam wall and the soil body, and cofferdam is enable to sink by self weight (or added counterweight)
Reach design position, theory accordingly, before Double-Wall Steel Boxed Cofferdam sinks in use and is taken based on soil with high-front shovel excavation, suction mud,
In jetting, cabin the various ways such as counterweight and use supplemented by comprehensive construction method, accelerate construction progress, it is ensured that cofferdam transfer precision.
Specifically, comprising the following steps:
Step 100, after the completion of pile foundation construction, remove drilling platform；
Step 200, double-wall cofferdam unit segmentation internal field workshop make, including blanking, widgets welding equipment, siding jigsaw,
Tire production molding in segmentation, cofferdam factory integration production；
Double-Wall Steel Boxed Cofferdam transport using two barges parallel, tugboat tow by the way of transported, in the processing factory of cofferdam by
600t gantry crane merogenesis is lifted to flat top barge, is then transported to bridge location；
Carry out live preparation before step 300, construction first, crane barge casts anchor positioning, utilizes 600t crane barge lifting double-wall cofferdam
Unit first segment, sinking cofferdam to homeostasis pour blade foot concrete；
If step 400, double-wall cofferdam unit are more piece, the second section double-wall cofferdam unit is lifted using crane barge and first segment is double
Wall cofferdam unit is spliced, is welded, and weldquality is ensured during spelling；It repeats to lift, completes more piece double-wall cofferdam unit
Splicing；
Step 500 is cut the earth by high-front shovel, and cooperation airlift suction dredger inhales the sinking measure of mud, keeps double-wall cofferdam whole
Body uniformly sinks to design position, throwing slabstone and rubble screed-coat, pours bottom concrete；
It draws water in step 600, double-wall cofferdam, then removes guidance system, cut off steel pile casting, dig pile crown；
Step 700, binding cushion cap reinforcing bar, pour first layer cushion cap concrete, after its intensity reaches design strength, remove
First layer cofferdam inner bracing piece, second layer cushion cap of constructing；It repeats to construct, completes whole pier construction.
Wherein, in above-mentioned work progress, in coxopodite double-wall cofferdam unit lifting from after floating stablize, with concrete pouring blade foot,
To increase the stiffness and strength in blade foot sinking watching, after having poured blade foot concrete cofferdam stabilization, installation connects high platform and faces
When connect high limition orientation.It connects high guiding to be arranged using 10# channel steel spacing 50cm, berm width 1.5m, wheel platform uses diameter
16mm screw-thread steel spacing 8cm welding.It temporarily connects high limition orientation to be arranged using 20 I-steel of Two bors d's oeuveres, guiding is higher by interface position
At 50cm, spacing 4-5m setting one.
Be using the advantages of above-mentioned cofferdam structure and construction method: the equipment used except high-front shovel generally use compared with
Few outer, other equipment are commonly used equipment, and the land used that cofferdam assembled sinking in situ occupies is less.Cofferdam is kept off as bearing platform construction
Water-bound, while being used as cushion cap template, the time is saved for next procedure construction.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of double-wall cofferdam, which is characterized in that including an at least section double-wall cofferdam unit, the double-wall cofferdam unit includes wall
Body, blade foot, inner bracing piece and guiding mechanism；
The blade foot is set to the wall body bottom end, and the inner bracing piece is positioned horizontally in the inside of the wall body inner panel, and with
The inner panel of the wall body is connected；The guiding mechanism includes connecting rod and guide plate, and the guide plate passes through the connection
Bar is connected with the wall body inner panel, and the curvature of the casing outside wall surface of the curvature and drilled pile of the guide plate is adapted,
And there is spacing between the guide plate and the casing outside wall surface.
2. double-wall cofferdam according to claim 1, which is characterized in that including double-wall cofferdam unit described in two sections, two section institutes
Double-wall cofferdam unit is stated vertically to splice.
3. double-wall cofferdam according to claim 1, which is characterized in that the horizontal cross-section of the double-wall cofferdam is rectangle.
4. double-wall cofferdam according to claim 1, which is characterized in that the quantity of the guiding mechanism is multiple, Duo Gesuo
It is corresponding with the casing of the drilled pile respectively to state guiding mechanism.
5. double-wall cofferdam according to claim 1, which is characterized in that the spacing of the guide plate and the casing outside wall surface
For 4cm.
6. double-wall cofferdam according to claim 1, which is characterized in that the connection of the connecting rod and the wall body inner panel
Place is additionally provided with stiffener.
7. double-wall cofferdam according to claim 1, which is characterized in that be arranged between the inner panel and outer panels of the wall body
Have a lifting lug, the quantity of the lifting lug be it is multiple, multiple lifting lugs are located at identical height and around the circumferential equal of the double-wall cofferdam
Even setting.
8. double-wall cofferdam according to claim 1, which is characterized in that be arranged between the inner panel and outer panels of the wall body
There is communicating pipe.
9. double-wall cofferdam according to claim 1, which is characterized in that the quantity of the inner bracing piece is multiple, Duo Gesuo
Stating inner bracing piece, transpostion interval is arranged along the vertical direction, and the double-wall cofferdam unit is separated into multilayer.
10. a kind of pier construction device, which is characterized in that including double-wall cofferdam as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822030384.8U CN209308050U (en) | 2018-12-04 | 2018-12-04 | A kind of double-wall cofferdam and pier construction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822030384.8U CN209308050U (en) | 2018-12-04 | 2018-12-04 | A kind of double-wall cofferdam and pier construction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209308050U true CN209308050U (en) | 2019-08-27 |
Family
ID=67675815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822030384.8U Expired - Fee Related CN209308050U (en) | 2018-12-04 | 2018-12-04 | A kind of double-wall cofferdam and pier construction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209308050U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371997A (en) * | 2018-12-04 | 2019-02-22 | 中铁六局集团有限公司 | A kind of double-wall cofferdam and pier construction method |
| CN111395371A (en) * | 2020-04-26 | 2020-07-10 | 中铁十一局集团第一工程有限公司 | Accurate adjusting device of double-walled steel cofferdam |
| CN112302028A (en) * | 2020-10-23 | 2021-02-02 | 中国五冶集团有限公司 | A guider that is used for double-walled steel cofferdam to transfer location |
-
2018
- 2018-12-04 CN CN201822030384.8U patent/CN209308050U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371997A (en) * | 2018-12-04 | 2019-02-22 | 中铁六局集团有限公司 | A kind of double-wall cofferdam and pier construction method |
| WO2020114523A1 (en) * | 2018-12-04 | 2020-06-11 | 中铁六局集团有限公司 | Double-wall cofferdam and pier construction method |
| CN111395371A (en) * | 2020-04-26 | 2020-07-10 | 中铁十一局集团第一工程有限公司 | Accurate adjusting device of double-walled steel cofferdam |
| CN112302028A (en) * | 2020-10-23 | 2021-02-02 | 中国五冶集团有限公司 | A guider that is used for double-walled steel cofferdam to transfer location |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109371997A (en) | A kind of double-wall cofferdam and pier construction method | |
| CN103741657B (en) | The construction method of large-sized multifunction waterborne traffic accident | |
| CN104532813B (en) | A kind of aquatic building operation platform and erection method, using method | |
| CN103835283B (en) | Full wet joint prefabricated prestressed underground continuous wall and construction method thereof | |
| CN102251530B (en) | Construction process of double-wall steel cofferdam for construction of pier bearing platform in main river water of Yellow River | |
| CN107524138B (en) | Construction method of ultra-deep foundation pit underground diaphragm wall | |
| CN209308050U (en) | A kind of double-wall cofferdam and pier construction device | |
| CN104895093B (en) | A kind of half coercion underground continuous wall and its construction method | |
| CN108049393A (en) | For the attached building enclosure construction technology in subway station under the conditions of rich water thick sand bed | |
| CN101538833A (en) | Vertical subsection double-wall steel cofferdam water stopping construction method | |
| CN108505529A (en) | A kind of construction method of the bearing platform construction steel cofferdam of Through Steel case arch bridge | |
| CN108867672A (en) | A kind of Double-Wall Steel Boxed Cofferdam joining method | |
| CN107059902A (en) | A kind of reusable steel boxed cofferdam structure and its construction method | |
| CN109707002B (en) | Device and method for accurately positioning, sinking and installing large water intake head | |
| CN106223355A (en) | A kind of high bearing platform supported on piles in deep water Hold Hoop method has device and the construction method of end steel jacket box | |
| CN110644363A (en) | Construction method of underwater main tower of cross-river cable-stayed bridge of high-speed railway | |
| CN107620311A (en) | A kind of mud off pore-creating filling pile prevents the method that aperture casing sinks | |
| CN103015442B (en) | Method for constructing split type cofferdam | |
| CN106758759A (en) | A kind of trestle pile foundation and its anchoring process for deep water drift net riverbed | |
| CN203654196U (en) | Guide apparatus for large and multifunctional over-water construction platform | |
| CN107299640A (en) | A kind of variable cross-section well shaft type ground continuous wall base and its construction method | |
| CN215211057U (en) | H-shaped steel structure for lap joint of underground continuous walls with different thicknesses | |
| JP6068985B2 (en) | Pile core positioning member | |
| JP6282316B2 (en) | Underwater pile construction method | |
| CN206495214U (en) | A kind of underwater concrete perfusion conduit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190827 Termination date: 20211204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |