CN205875194U - Pouring jacket cofferdam bearing platform structure - Google Patents
Pouring jacket cofferdam bearing platform structure Download PDFInfo
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- CN205875194U CN205875194U CN201620689416.3U CN201620689416U CN205875194U CN 205875194 U CN205875194 U CN 205875194U CN 201620689416 U CN201620689416 U CN 201620689416U CN 205875194 U CN205875194 U CN 205875194U
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- cofferdam
- concrete layer
- cushion cap
- filter pipe
- precast
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Abstract
The utility model discloses a pouring jacket cofferdam bearing platform structure relates to bridge cushion cap cofferdam structure field, including the cofferdam body, back cover concrete layer, back cover concrete layer locate the cofferdam bottom, sand bedding course, sand bedding course are located on the top surface of bottom sealing by concreting layer, on bed course concrete layer, bed course concrete layer located the sand bedding course top surface, the tiling of bed course concrete layer normal water was equipped with reinforcing bar net piece, cushion cap, cushion cap are located on the bed course concrete layer top surface. The utility model discloses a cofferdam cushion cap simple structure has both effectually reduced engineering cost, has accelerated the construction progress, has reduced the construction process degree of difficulty simultaneously, and this is to guaranteeing that construction quality has very big help.
Description
Technical field
This utility model relates to bridge bearing platform cofferdam structure field, is specifically related to a kind of precast-boxed cofferdam suspended deck structure.
Background technology
Double-wall sin-gle-image radiography is the large diameter borehole multi-column pier foundation bearing platform construction scheme in a kind of conventional deep water.It is executed
The processing in work order usually a. cofferdam, the transportation by driving in b. cofferdam, the sinking in c. cofferdam, the construction of d. bottom concrete layer, e. takes out
Water makes cushion cap bed die, f. colligation cushion cap reinforcing bar and pour cushion cap on cushion cap bed die.Wherein the making of cushion cap bed die has two kinds
Scheme, one is to utilize bottom concrete layer end face as cushion cap bed die, and this is accomplished by cushion cap bottom surface elevation and bottom concrete
Layer elevation of top surface is consistent；Another is exactly to make steel bed die to be hung on the bracket of casing, or is supported on back cover coagulation
Soil end face.
But, during in profundal zone with precast-boxed cofferdam construction low pile cap, due to cushion cap bottom surface elevation and bottom concrete layer
Elevation of top surface usually has a certain distance, it is impossible to by the end face of bottom concrete layer directly as cushion cap bed die；According at the bottom of steel
Mould the most not only constructs complexity, construction inconvenience, and punching block cannot be removed and cause waste.
Utility model content
For defect present in prior art, the purpose of this utility model is to provide a kind of precast-boxed cofferdam cushion cap knot
Structure, simple structure, effectively reduce construction costs, accelerate construction speed.
For reaching object above, this utility model adopts the technical scheme that: a kind of precast-boxed cofferdam suspended deck structure, including:
Cofferdam body；Bottom concrete layer, described bottom concrete layer is located at described cofferdam body bottom portion；Sand bedding course, described sand bedding course
It is located on described bottom concrete layer end face；Blinding concrete layer, described blinding concrete layer is located on sand bedding course end face, described
In blinding concrete layer, level is equipped with reinforced mesh；Cushion cap, described cushion cap is located on described blinding concrete layer end face.
On the basis of technique scheme, in described sand bedding course, it is provided with the many filters along described cofferdam body circle distribution
Water pipe, and body central region, described cofferdam is additionally provided with at least one filter pipe.
On the basis of technique scheme, it is interconnected between the filter pipe of described cofferdam body circle distribution, and
Pipe it is communicated with between the filter pipe and the filter pipe in body central region, described cofferdam of described cofferdam body circle distribution.
On the basis of technique scheme, described filter pipe is provided with multiple treatment hole, and described treatment hole is uniformly distributed
Bottom described filter pipe.
On the basis of technique scheme, in the range of described treatment hole is located at two meters, described filter pipe lower end.
On the basis of technique scheme, described treatment hole is externally provided with permeable geotextiles.
Prior art is compared, and the utility model has the advantage of:
This utility model sets up sand bedding course to cushion cap bottom surface absolute altitude on bottom concrete layer, participates in pouring with reinforced mesh
The blinding concrete layer formed replaces general steel bed die.Cofferdam of the present utility model cushion cap simple structure, both effectively reduced
Construction costs, accelerating construction speed, reduce construction technology difficulty simultaneously, this is to ensureing that construction quality has very great help.
This utility model is extensive by application prospect during precast-boxed cofferdam construction low pile cap in profundal zone, in deep water, face, riverbed is particularly
In the large-scale crossing-fiver bridge that light slate difficulty of construction is bigger, achieve and well use effect.
Accompanying drawing explanation
Fig. 1 is the generalized section of precast-boxed cofferdam cushion cap in this utility model embodiment；
Fig. 2 is the top view of precast-boxed cofferdam cushion cap placing sand layer in this utility model embodiment；
Fig. 3 is the generalized section of precast-boxed cofferdam cushion cap placing sand layer in this utility model embodiment.
In figure: the body of 1-cofferdam, 2-bottom concrete layer, 3-sand bedding course, 4-blinding concrete layer, the permeable geotextiles of 5-,
6-cushion cap, 7-filter pipe, 71-treatment hole, 8-communicating pipe, 9-steel pile casting.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in further detail.
Shown in Figure 1, this utility model embodiment provides a kind of precast-boxed cofferdam suspended deck structure, including: cofferdam body 1；
Bottom concrete layer 2, bottom concrete layer 2 is located at bottom cofferdam body 1；Sand bedding course 3, sand bedding course 3 is located at bottom concrete layer 2
On end face；Blinding concrete layer 4, blinding concrete layer 4 is located on sand bedding course 3 end face, and in blinding concrete layer 4, level is equipped with
Reinforced mesh；Cushion cap 6, cushion cap 6 is located on blinding concrete layer 4 end face.
See shown in Fig. 2 and Fig. 3, in sand bedding course 3, be provided with the many filter pipes 7 along cofferdam body 1 circle distribution, and cofferdam
Body 1 central area is additionally provided with at least one filter pipe 7.Its Main Function is to filter the water in back-up sand, makes back-up sand in cofferdam closely knit,
Reduce the decrement of sand, improve the bearing capacity of sand.Filter pipe 7 uses 820mm steel pipe manufacturing, long 5.0m, and base opening is closed, bottom with
Bottom concrete layer 2 end face contacts.It is interconnected between the filter pipe 7 of cofferdam body 1 circle distribution, and along cofferdam body 1
It is communicated with pipe 8 between filter pipe 7 and the filter pipe 7 of cofferdam body 1 central area of circle distribution.Communicating pipe 8 ensures everywhere
Filter pipe in water level the most contour, beneficially strengthen the effect drawn water by filter pipe 7.Filter pipe 7 is provided with multiple drainage
Hole 71, treatment hole 71 is uniformly distributed in bottom filter pipe 7.Two meters, filter pipe 7 lower end scope tube wall bores 10mm treatment hole 71, Kong Jian
Away from for 10cm*10cm.In pipe, outside pipe, one layer of permeable geotextiles 5 is wrapped up in for preventing sand from draining to from hole.14 steel are arranged in cofferdam
Drainage pipe, its distribution in cofferdam is as shown in Figure 2.
This utility model sets sand bedding course to cushion cap bottom surface absolute altitude on bottom concrete, participates in watering building up pad with reinforced mesh
Layer concrete layer, to replace general steel bed die, finally pours cushion cap on blinding concrete layer.Cofferdam of the present utility model is held
Platform simple structure, constructs convenient, has both effectively reduced construction costs, has accelerated construction speed, reduces construction technology simultaneously
Difficulty, this is to ensureing that construction quality has very great help.This utility model in profundal zone with precast-boxed cofferdam construction low pile cap time should
Extensive by prospect, it is particularly in the large-scale crossing-fiver bridge that light slate difficulty of construction is bigger in deep water, face, riverbed, achieves good
Use effect.
This utility model is not limited to above-mentioned embodiment, for those skilled in the art, not
On the premise of departing from this utility model principle, it is also possible to making some improvements and modifications, these improvements and modifications are also considered as this reality
Within novel protection domain.The content not being described in detail in this specification belongs to known to professional and technical personnel in the field
Prior art.
Claims (6)
1. a precast-boxed cofferdam suspended deck structure, it is characterised in that including:
Cofferdam body (1)；
Bottom concrete layer (2), described bottom concrete layer (2) is located at bottom, described cofferdam body (1)；
Sand bedding course (3), described sand bedding course (3) is located on described bottom concrete layer (2) end face；
Blinding concrete layer (4), described blinding concrete layer (4) is located on sand bedding course (3) end face, described blinding concrete layer
(4) in, level is equipped with reinforced mesh；
Cushion cap (6), described cushion cap (6) is located on described blinding concrete layer (4) end face.
2. a kind of precast-boxed cofferdam suspended deck structure as claimed in claim 1, it is characterised in that: it is provided with many in described sand bedding course (3)
Root is along the filter pipe (7) of described cofferdam body (1) circle distribution, and body (1) central area, described cofferdam is additionally provided with at least one
Filter pipe (7).
3. a kind of precast-boxed cofferdam suspended deck structure as claimed in claim 2, it is characterised in that: along described cofferdam body (1) circumference
It is interconnected between the filter pipe (7) of distribution, and along filter pipe (7) and the described cofferdam of described cofferdam body (1) circle distribution
It is communicated with between the filter pipe (7) of body (1) central area managing (8).
4. a kind of precast-boxed cofferdam suspended deck structure as claimed in claim 2, it is characterised in that: described filter pipe (7) is provided with many
Individual treatment hole (71), described treatment hole (71) is uniformly distributed in described filter pipe (7) bottom.
5. a kind of precast-boxed cofferdam suspended deck structure as claimed in claim 4, it is characterised in that: described treatment hole (71) is located at described
In the range of two meters, filter pipe (7) lower end.
6. a kind of precast-boxed cofferdam suspended deck structure as claimed in claim 4, it is characterised in that: described treatment hole (71) is externally provided with
Water geotextiles (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620689416.3U CN205875194U (en) | 2016-07-01 | 2016-07-01 | Pouring jacket cofferdam bearing platform structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620689416.3U CN205875194U (en) | 2016-07-01 | 2016-07-01 | Pouring jacket cofferdam bearing platform structure |
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| Publication Number | Publication Date |
|---|---|
| CN205875194U true CN205875194U (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620689416.3U Active CN205875194U (en) | 2016-07-01 | 2016-07-01 | Pouring jacket cofferdam bearing platform structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970994A (en) * | 2016-07-01 | 2016-09-28 | 中铁大桥勘测设计院集团有限公司 | Pouring jacket cofferdam pile cap structure and construction method |
| CN110374120A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | A kind of precast-boxed cofferdam monoblock type is put more energy into back cover construction method |
| CN110565673A (en) * | 2019-08-01 | 2019-12-13 | 中交二公局第二工程有限公司 | reinforced concrete bottom sealing structure of bearing platform in flood beach area and construction method thereof |
| CN112081131A (en) * | 2020-08-06 | 2020-12-15 | 中交二公局东萌工程有限公司 | Steel casing bearing platform process |
-
2016
- 2016-07-01 CN CN201620689416.3U patent/CN205875194U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970994A (en) * | 2016-07-01 | 2016-09-28 | 中铁大桥勘测设计院集团有限公司 | Pouring jacket cofferdam pile cap structure and construction method |
| CN110374120A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | A kind of precast-boxed cofferdam monoblock type is put more energy into back cover construction method |
| CN110565673A (en) * | 2019-08-01 | 2019-12-13 | 中交二公局第二工程有限公司 | reinforced concrete bottom sealing structure of bearing platform in flood beach area and construction method thereof |
| CN112081131A (en) * | 2020-08-06 | 2020-12-15 | 中交二公局东萌工程有限公司 | Steel casing bearing platform process |
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