CN205530305U - Cushion cap construction of large -scale bridge deep water basis is with three wall steel cofferdams - Google Patents
Cushion cap construction of large -scale bridge deep water basis is with three wall steel cofferdams Download PDFInfo
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- CN205530305U CN205530305U CN201620045984.XU CN201620045984U CN205530305U CN 205530305 U CN205530305 U CN 205530305U CN 201620045984 U CN201620045984 U CN 201620045984U CN 205530305 U CN205530305 U CN 205530305U
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- wall
- cushion cap
- construction
- midfeather
- deep water
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Abstract
The utility model provides a cushion cap construction of large -scale bridge deep water basis is with three wall steel cofferdams, inner supporting frame and the work platform of setting on inner supporting frame including cofferdam main part and the inboard top of cofferdam main part, the cofferdam main part is by outer extremely interior outer wall, midfeather and the inner wall of including in proper order, height such as outer wall and midfeather, the two is equipped with the reinforced rib plate, the inner wall is less than the midfeather is equipped with the concrete placement layer between the two, cofferdam main part inboard bottom position is equipped with the cushion cap, and this cushion cap bottom is equipped with a plurality of concrete placement stakes. The utility model discloses it burys the darker bridge deep water foundation construction of basement rock to be suitable for the construction cushion cap. The formation working face of morning carries out the drilled pile construction in advance, more can guarantee bridge foundation construction period. Simultaneously, concrete placement layer and basement rock three between cofferdam main part, inner wall and the midfeather form a whole, and the structure is firmer, can satisfy more that water is relatively dark, the bigger construction operating mode of the velocity of flow.
Description
Technical field
This utility model belongs to bridge construction technical field, especially relates to a kind of large bridge deep water foundation
Bearing platform construction is with three wall steel cofferdams.
Background technology
At present, in the construction process crossing over each rivers,lakes and seas bridge, to large bridge deep water foundation cushion cap
Construction dash equipment, equipment present stage uses single wall cofferdam or double-wall cofferdam, and single wall, double-wall steel enclose
Weir cannot solve the operating mode that cushion cap embedment basement rock is deeper, is the most all to take the skills such as underwater demolition in present stage
Basement rock is removed by art measure, along with the development of society, at other important building such as existing railway, highway
Side, builds large bridge and gets more and more, and the technical measures of explosion now cannot be used again to remove basement rock, with
Shi Xinjian large bridge has the duration tight, crosses flood risk greatly, and the factors such as clear base workload is big are existing, single
Wall, double-walled steel cofferdam structure cannot meet use requirement.
Summary of the invention
In view of this, this utility model is directed to a kind of large bridge deep water foundation bearing platform construction three walls
Steel cofferdam, meet large bridge cushion cap embed basement rock deeper time construction bearing platform demand.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
A kind of large bridge deep water foundation bearing platform construction is with three wall steel cofferdams, including cofferdam main body, Yi Jiwei
The inner support frame of weir main body inside top and the work platforms being arranged on inner support frame；Described cofferdam
Main body includes outer wall, midfeather and inwall the most successively；Described outer wall is contour with midfeather, the two
Between be provided with deep floor；Described inwall is less than described midfeather, is provided with therebetween concrete lift；
Main body inside bottom position, described cofferdam is provided with cushion cap, is provided with some concreting stakes bottom this cushion cap.
Further, described inner support frame is truss structure.
Further, described outer wall, midfeather and inwall are welded and fixed integrated structure.
Further, the inside of subterrane is stretched in described concreting stake.
Further, concrete cushion of having constructed in advance in described cushion cap lower end, this concrete cushion sets
Put cushion cap assembling reinforcement.
Relative to prior art, deep water foundation bearing platform construction described in the utility model has with three wall steel cofferdams
There is a following advantage:
Solve single wall, Double-Wall Steel Boxed Cofferdam cannot imbed the bridge deepwater base that basement rock is deeper by construction bearing platform at all
Plinth construction difficult problem.Further, three wall steel cofferdams in this utility model can form work surface earlier, carries
Before carry out drilled pile construction, more can guarantee that the bridge foundation construction duration.Meanwhile, cofferdam main body, inwall with
Concrete lift and basement rock three between midfeather form an entirety, and structure is firmer,
More can meet the construction operating mode that water is deep, velocity ratio is bigger.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing,
Schematic description and description of the present utility model is used for explaining this utility model, is not intended that this reality
With novel improper restriction.In the accompanying drawings:
Fig. 1 is construction schematic diagram during this utility model anchoring cofferdam main body；
Fig. 2 is construction schematic diagram when this utility model installation inner support frame and work platforms；
Fig. 3 is construction schematic diagram during this utility model construction slotted eye；
Fig. 4 is this utility model construction schematic diagram when pouring slotted eye；
Fig. 5 is the construction schematic diagram that this utility model carries out when concreting stake is holed；
Fig. 6 is construction schematic diagram during this utility model cleaning foundation ditch；
Fig. 7 is that this utility model has been constructed the structural representation after cushion cap；
Fig. 8 is the top view that this utility model is provided with the cofferdam main body of inner support frame；
Fig. 9 is table plane schematic diagram during this utility model construction slotted eye；
Figure 10 is table plane schematic diagram during this utility model construction concreting stake.
Description of reference numerals:
1-cofferdam main body；2-inner support frame；3-work platforms；4-outer wall；5-midfeather；6-inwall；
7-deep floor；8-concrete lift；9-cushion cap；10-concreting stake；11-basement rock；12-
Groove milling equipment；13-slotted eye；14-rig；15-steel pile casting；16-cover layer；17-stake holes.
Detailed description of the invention
It should be noted that in the case of not conflicting, in embodiment in this utility model and embodiment
Feature can be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " horizontal stroke
To ", " on ", D score, "front", "rear", "left", "right", " vertically ", " water
Flat ", the orientation that indicates of " top ", " end ", " interior ", " outward " etc. or position relationship be based on attached
Orientation shown in figure or position relationship, be for only for ease of description this utility model and simplify description, and not
Be instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second "
Etc. being only used for describing purpose, and it is not intended that instruction or hint relative importance or implicit indicate indication
The quantity of the technical characteristic shown.Thus, the feature defining " first ", " second " etc. can be expressed
Or implicitly include one or more this feature.In description of the present utility model, unless otherwise
Illustrating, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited,
Term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing,
Can also be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；
Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the company of two element internals
Logical.For the ordinary skill in the art, can understand that above-mentioned term is at this by concrete condition
Concrete meaning in utility model.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of large bridge deep water foundation bearing platform construction, with three wall steel cofferdams, if Fig. 1 is to shown in 10, wraps
Include cofferdam main body 1 and the inner support frame 2 of cofferdam main body 1 inside top and be arranged on inner support
Work platforms 3 on frame 2；Described cofferdam main body 1 includes outer wall 4, midfeather 5 the most successively
With inwall 6；Described outer wall 4 is contour with midfeather 5, is provided with deep floor 7 between the two；Described inwall 6
Less than described midfeather 5, it is provided with therebetween concrete lift 8；The end inside described cofferdam main body 1
Position has installed cushion cap 9, is provided with some concreting stakes 10 bottom this cushion cap 9.
It should be noted that the work platforms 3 on inner support frame 2 top is as groove milling construction and drilling construction
Platform, meanwhile, also as the inner supporting structure of cofferdam main body 1, and cofferdam main body 1 is together as supporting
The support of water pressure resistance effect, its structure can be welded to an entirety by shaped steel.
Cofferdam main body 1 is supported on rock stratum end face, and wherein outer wall 4 and midfeather 5 are stress supporting construction,
Play isolation river effect, subject deadweight, cushion cap basement rock clear up time water pressure, drilling construction time
Rig load, inwall 6 has the effect that 1) groove milling time, it is possible to guiding mechanically formed to groove milling.2)
As template during slotted eye 13 casting concrete, it is ensured that between cofferdam main body 1, inwall 6 and midfeather 5
Concrete lift 8 and cofferdam main body 1 below basement rock 11 triplicity be an entirety, can
To meet the requirement crossing flood in works deep water.
Wherein, described inner support frame 2 is truss structure, stabilized structure, and intensity is high.
Wherein, described outer wall 4, midfeather 5 and inwall 6 are welded and fixed integrated structure.Need
Bright, cofferdam main body can the shape such as rectangular, circular, arc end according to actual dimension of platform
Shape.Three wall steel cofferdam manufactures can merogenesis manufacture, install in place after on-site consolidation again；If it addition, transhipment bar
When part allows, it is possible to taking monoblock type manufacture, overall transportation by driving is in place.Cofferdam main body 1 inwall headroom size
Should be more bigger than cushion cap 9 size, meet cofferdam positioning requirements.
It is solid and reliable for ensureing cushion cap 9, and stress is good, and underground is stretched in described concreting stake 10
The inside of basement rock 11；Construct in advance in described cushion cap lower end concrete cushion, on concrete cushion
Cushion cap assembling reinforcement is set.It addition, reserved on concrete cushion, mass concrete construction circulation is installed
Water pipe and the installation position of thermometric components and parts.
It is relatively deep that this utility model large bridge water foundation platform in rivers,lakes and seas embeds basement rock, and cushion cap adjoins
Adjacent important building, when basement rock cannot use the technical measures such as underwater demolition to remove, it is possible to create one and hold
Excavation of foundation pit, the reinforcing bar binding of cushion cap 9, the dry environment of cushion cap 9 concreting during platform construction, create
One anhydrous environment in local in rivers,lakes and seas deep water, it is ensured that construction is smoothed out.
Provide below the construction of a kind of above-mentioned large bridge deep water foundation bearing platform construction three wall steel cofferdams
Method, comprises the steps:
1. by place by precalculated position for cofferdam main body 1 and anchor, the top inside cofferdam main body 1 afterwards
Inner support frame 2 in place is installed, then arranges work platforms 3 on inner support frame 2 top；Here it is possible to
According to the situation of bridge location, cast anchor location technology or additive method can be used, cofferdam is positioned；
2. on work platforms 3, groove milling equipment 12 is arranged, with inwall 6 for guiding, to cofferdam main body 1
Lower section is in the basement rock 11 groove milling hole 13 of position between inwall 6 and midfeather 5；After slotted eye 13 milling is complete,
Clear hole, and sediment at the bottom of hole wall mud and hole is cleaned out；It is pointed out that the degree of depth of slotted eye 13
Below the bottom surface of the cushion cap 9 deeply will constructed should be met；
3. to step 2. in slotted eye 13 carry out underwater concreting, after concrete reaches intensity, enclose
Below concrete lift 8 between weir main body 1, inwall 6 and midfeather 5 and cofferdam main body 1
Basement rock 11 triplicity be an entirety；
4. on work platforms 3, rig 14 is arranged, to the basement rock 11 in cofferdam main body 1 by design
Need to carry out stake holes 17 to hole, simultaneously lower steel pile casting 15, the steel pile casting 15 of layout in each boring
Both pass through cover layer 16 to insert in basement rock 11；
5. after having holed, drain the water within cofferdam main body 1, cut off the steel that basement rock more than 11 is unnecessary
Casing 15 part, and foundation ditch is cleared up；
6., after foundation ditch has been cleared up, foundation ditch is carried out smooth, and concrete cushion of constructing, pour cushion cap 9.
It should be noted that before Shi Gong, first according to features of terrain, the geology rock of bridge bearing platform position yet to be built
The peak level can met in feature and bearing platform construction engineering, water level of setting up defences.Tentatively draft
The overall dimensions of three wall steel cofferdams, according to the load acted on cofferdam, including deadweight, water pressure, soil
Three wall cofferdam are calculated by pressure, flow force etc. in detail, finally determine cofferdam main body, inner support and groove
The each physical dimension in hole.Secondly, according to on-the-spot execution conditions, manufacture and the transporter of each structural member are determined
Formula, if navigation channel meets cofferdam main body entirety transportation by driving to the condition of bridge location, just uses cofferdam overall processing overall
The scheme of transportation by driving, if navigation channel cannot meet in the condition of overall transportation by driving, can be in factory's piecemeal processing, transport
To bridge location, floating platform is set near bridge location, the structural member in assembled cofferdam on this floating platform,
According to equipment crane capacity, assembly can be with integral assembling, it is also possible to merogenesis is assembled.
During cleaning foundation ditch, it is possible to use the artificial mode combining machinery carries out clear base, in excavation workload very
Greatly, in the case of construction period is very tight, work platforms 3 can be carried out local flow improvement, by construction machinery
Hang in internal the carrying out of cofferdam main body 1 and clear up foundation ditch inner covering layer 4 and the prune job of basement rock 5.Improve work
Make efficiency.It is noted that during local flow improvement work platforms 3 and choose work platforms 3 structural strength height, be subject to
The position that power situation is good carries out perforate, or splits out the corresponding partial structurtes of workbench 3 temporarily, it is simple to construction
Machinery enters.
Before pouring cushion cap, first colligation cushion cap reinforcing bar on concrete cushion, and mass concrete is installed executes
Work circulating water pipe and thermometric components and parts, to ensure that cushion cap 9 is carried out smoothly in order, construction effect is good.
The three wall steel cofferdams that this utility model provides from solving single wall at all, Double-Wall Steel Boxed Cofferdam cannot be constructed
The bridge deepwater foundation construction difficult problem that cushion cap embedment basement rock is deeper.Further, these three wall steel cofferdams can relatively early
Formation work surface, carry out drilled pile construction in advance, more can guarantee that the bridge foundation construction duration.Meanwhile,
Concrete lift 8 between cofferdam main body 1, inwall 6 and midfeather 5 and basement rock 11 three's shape
Becoming an entirety, structure is firmer, more can meet the construction operating mode that water is deep, velocity ratio is bigger.
The foregoing is only preferred embodiment of the present utility model, not new in order to limit this practicality
Type, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement made
Deng, within should be included in protection domain of the present utility model.
Claims (5)
1. a large bridge deep water foundation bearing platform construction is with three wall steel cofferdams, it is characterised in that: include
Cofferdam main body and the inner support frame of cofferdam main body inside top and the work being arranged on inner support frame
Make platform；Described cofferdam main body includes outer wall, midfeather and inwall the most successively；Described outer wall with
Midfeather is contour, is provided with deep floor between the two；Described inwall is less than described midfeather, sets therebetween
There is concrete lift；Main body inside bottom position, described cofferdam is provided with cushion cap, if being provided with bottom this cushion cap
Dry concrete pours stake.
A kind of large bridge deep water foundation bearing platform construction the most according to claim 1 encloses with three wall steel
Weir, it is characterised in that: described inner support frame is truss structure.
A kind of large bridge deep water foundation bearing platform construction the most according to claim 1 encloses with three wall steel
Weir, it is characterised in that: described outer wall, midfeather and inwall are welded and fixed integrated structure.
A kind of large bridge deep water foundation bearing platform construction the most according to claim 1 encloses with three wall steel
Weir, it is characterised in that: the inside of subterrane is stretched in described concreting stake.
A kind of large bridge deep water foundation bearing platform construction the most according to claim 1 encloses with three wall steel
Weir, it is characterised in that: concrete cushion of having constructed in advance in described cushion cap lower end, at this concrete cushion
On cushion cap assembling reinforcement is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045984.XU CN205530305U (en) | 2016-01-18 | 2016-01-18 | Cushion cap construction of large -scale bridge deep water basis is with three wall steel cofferdams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045984.XU CN205530305U (en) | 2016-01-18 | 2016-01-18 | Cushion cap construction of large -scale bridge deep water basis is with three wall steel cofferdams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530305U true CN205530305U (en) | 2016-08-31 |
Family
ID=56764127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620045984.XU Withdrawn - After Issue CN205530305U (en) | 2016-01-18 | 2016-01-18 | Cushion cap construction of large -scale bridge deep water basis is with three wall steel cofferdams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649094A (en) * | 2016-01-18 | 2016-06-08 | 中国铁建大桥工程局集团有限公司 | Three-wall steel cofferdam for deepwater foundation bearing platform construction and construction method of three-wall steel cofferdam |
-
2016
- 2016-01-18 CN CN201620045984.XU patent/CN205530305U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649094A (en) * | 2016-01-18 | 2016-06-08 | 中国铁建大桥工程局集团有限公司 | Three-wall steel cofferdam for deepwater foundation bearing platform construction and construction method of three-wall steel cofferdam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20171031 |
|
| AV01 | Patent right actively abandoned |