CN210507492U - Cofferdam structure - Google Patents
Cofferdam structure Download PDFInfo
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- CN210507492U CN210507492U CN201921071882.5U CN201921071882U CN210507492U CN 210507492 U CN210507492 U CN 210507492U CN 201921071882 U CN201921071882 U CN 201921071882U CN 210507492 U CN210507492 U CN 210507492U
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Abstract
The utility model relates to a hydraulic engineering technical field discloses a cofferdam structure, including dyke the heart and locating the coping of dyke heart top, dyke the heart including filling sand bag layer, fill sand bag layer locate on the silt layer, the outside, top and the inboard of filling sand bag layer all are equipped with geotechnological cloth, and the geotechnological cloth top in the dyke heart outside is equipped with outer bank protection, and the bottom of outer bank protection is equipped with the banket, and the inboard geotechnological cloth top of dyke heart is equipped with interior bank protection, is equipped with the first steel sheet pile who injects the silt layer on interior bank protection. Under the gravity of the sand filling bag layer and the heavy pressure of the coping, the sand filling bag layer is tightly attached to the silt layer, the sand filling bag layer plays a role in water stopping of a first layer, and the first steel sheet pile plays a role in water stopping of a second layer, so that the water stopping effect of the cofferdam structure is better; the erosion of stormy waves can be resisted to outer bank protection, protects cofferdam structure's integrality, avoids cofferdam structure to be destroyed, and interior protective slope has consolidated cofferdam structure's intensity for cofferdam structure is more firm reliable.
Description
Technical Field
The utility model relates to a hydraulic engineering technical field, in particular to cofferdam structure.
Background
Generally, a construction project is built in water areas such as land sea or land lake junctions, a temporary cofferdam needs to be built, the cofferdam encloses the area needing construction, then water on the inner side of the cofferdam is pumped, a foundation pit is excavated on the inner side of the cofferdam, buildings are built, and the like, so that the temporary cofferdam needs to meet the water stopping and protecting functions. The power plant construction on coast needs to get water and cools power plant equipment, needs to construct an interim cofferdam at water and land handing-over department so that building and getting drainage facility in the cofferdam inboard, this kind of cofferdam not only satisfies the stagnant water requirement under the inside and outside head pressure of tidal change, can also stand the baptism of waters period storm surge and erode, guarantees the stability of embankment body structure, still needs the later stage of being convenient for to demolish simultaneously. The cofferdam water stopping effect at the present stage is poor, the manufacturing cost is high, and the cofferdam is not convenient to dismantle at the later stage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a firm cofferdam structure, can effectual stagnant water.
The utility model provides a cofferdam structure, including dyke the core and locating the coping of dyke core top, the dyke core is including filling sand bag layer, fills on sand bag layer locates the silt layer, the outside, top and the inboard of filling sand bag layer all are equipped with geotechnological cloth, and the geotechnological cloth top in the dyke core outside is equipped with outer bank protection, and the bottom of outer bank protection is equipped with the banket, and the geotechnological cloth top of dyke core inboard is equipped with interior bank protection, is equipped with the first steel sheet pile who injects the silt layer on the interior bank protection.
Has the advantages that: the top pressing has a good counterweight effect, the sand filling bag layer is tightly attached to the silt layer under the self gravity and the heavy pressure of the top pressing, the sand filling bag layer plays a role in water stopping of the first layer, the geotextile plays a role in wrapping and supporting the sand filling bag layer, and the first steel sheet pile plays a role in water stopping of the second layer, so that the water stopping effect of the cofferdam structure is better; the erosion of stormy waves can be resisted to outer bank protection, protects cofferdam structure's integrality, avoids cofferdam structure to be destroyed, and interior protective slope has consolidated cofferdam structure's intensity for cofferdam structure is more firm reliable.
As an improvement of the technology, a second steel sheet pile is arranged on the inner protection slope on one side, far away from the dike core, of the first steel sheet pile, and the second steel sheet pile plays a role in stopping water on the third layer.
As an improvement of the above technology, the second steel sheet pile is provided with a plurality of steel pipe piles which are uniformly distributed on one side far away from the first steel sheet pile, and the first steel sheet pile, the second steel sheet pile, the dike core and the inner protection slope are reinforced on the sludge layer by the steel pipe piles.
As an improvement of the technology, the first steel sheet pile and the second steel sheet pile are both Larsen steel sheet piles, and the Larsen steel sheet piles have the characteristics of high construction speed, low construction cost and good water stopping effect.
As an improvement of the technology, the dyke core further comprises a dyke core layer with a triangular cross section, the cross sections of the sand filling bag layer and the dyke core layer are trapezoidal, and the pressing top is arranged above the sand filling bag layer. The cross-sectional shapes of the sand filling bag layer and the dyke center layer are favorable for stabilizing the cofferdam structure.
As an improvement of the technology, the outer protecting slope comprises a twisted king character layer and an outer stone layer which are distributed up and down, the outer stone layer can protect the dyke core layer, and the twisted king character layer can protect the outer stone layer.
As an improvement of the technology, the twisting Chinese character layer comprises a plurality of twisting Chinese character blocks, each twisting Chinese character block weighs 2-5 tons, the twisting Chinese character blocks are prevented from being displaced under the action of water flow or sea waves, and the twisting Chinese character blocks can provide enough downward pressure for the outer rock layer.
As an improvement of the technology, the inner protective slope comprises an inner stone layer and a crushed stone layer which are distributed up and down, the inner stone layer can protect the crushed stone layer, and the crushed stone layer can protect the sand bag layer.
As an improvement of the technology, the coping is an inverted T-shaped concrete block, and the inverted T-shaped structure enables the coping to be stably arranged on the sand-filled bag layer.
As the improvement of the technology, the foot protector is a stone layer, the cross section of the foot protector is trapezoidal, and the foot protector is stable in structure and effectively protects the bottom of the outer protective slope.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
fig. 1 is a cross-sectional view of an embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, a cofferdam structure includes a dike core 10 and a coping 20 disposed above the dike core 10, the dike core 10 includes a sand-filled bag layer 11, the sand-filled bag layer 11 is disposed on a silt layer, geotextiles 30 are disposed outside, above and inside the sand-filled bag layer 11, outside of the sand-filled bag layer 11 is outside of the cofferdam, inside of the sand-filled bag layer 11 is inside of the cofferdam, an outer protection slope 40 is disposed above the geotextile 30 outside the dike core 10, a protection foot 50 is disposed at bottom of the outer protection slope 40, an inner protection slope 60 is disposed above the geotextile 30 inside the dike core 10, and a first steel sheet pile 70 inserted into the silt layer is disposed on the inner protection slope 60.
The coping 20 has a good counterweight effect, the sand filling bag layer 11 is tightly attached to the silt layer under the self gravity of the sand filling bag layer 11 and the heavy pressure of the coping 20, the sand filling bag layer 11 has a first water stopping effect, the geotextile 30 has a function of wrapping and supporting the sand filling bag layer 11, and the first steel sheet pile 70 has a second water stopping effect, so that the water stopping effect of the cofferdam structure is better; the outer revetment 40 can resist the erosion of stormy waves, protects the integrity of the cofferdam structure, avoids the cofferdam structure to be damaged, and the inner protection slope 60 reinforces the strength of the cofferdam structure, so that the cofferdam structure is firmer.
The second steel sheet pile 80 is arranged on the inner protection slope 60 on one side, far away from the dike core 10, of the first steel sheet pile 70, a plurality of reinforcing cross beams 100 are arranged between the first steel sheet pile 70 and the second steel sheet pile 80, the reinforcing cross beams 100 can be steel pipes with the outer diameter of 180mm, the wall thickness is 10mm, and the distance between the two reinforcing cross beams 100 can be 3 m. The second steel sheet pile 80 is provided with a plurality of steel pipe piles 90 which are uniformly distributed on one side far away from the first steel sheet pile 70, the steel pipe piles 90 can be made of steel with the outer diameter of 800mm, the wall thickness is 12mm, and the length of the steel pipe piles 90 can be 15 m. The second steel sheet pile 80 plays a role in stopping water at the third layer, and the steel pipe pile 90 reinforces the first steel sheet pile 70, the second steel sheet pile 80, the dike core 10 and the inner protection slope 60 on the sludge layer to prevent the cofferdam structure from sliding on the sludge layer. The first steel sheet pile 70 and the second steel sheet pile 80 are Larsen steel sheet piles, and the Larsen steel sheet piles are green and environment-friendly, are high in construction speed and low in construction cost, and have a good waterproof function.
The dyke core 10 further comprises a dyke core layer 12 with a triangular cross section, the dyke core layer 12 is formed by stacking a plurality of stones, the weight of each stone is 100-200kg, and the dyke core layer 12 can be used as a permanent set part and plays a role in slowing down underwater water flow and can be dismantled according to requirements. The section of the sand-filled bag layer 11 is prismatic, the section of the sand-filled bag layer 11 and the section of the dike core layer 12 at the same position are trapezoidal, the section shapes of the sand-filled bag layer 11 and the dike core layer 12 are beneficial to the stability of the cofferdam structure, and the coping 20 is arranged above the sand-filled bag layer 11. The sand-filled bag layer 11 is formed by stacking a plurality of sand-filled filling bags filled with sand, the geotextile of the filling bags is polypropylene filament woven geotextile, and the unit mass can be 250g/m2And the filling bags are tightly abutted, so that the water stopping effect of the sand filling bag layer 11 is good.
The coping 20 is an inverted T-shaped concrete block, the inverted T-shaped structure allows the coping 20 to be smoothly placed on the sand-filled bag layer 11, and a sidewalk can be set on the top of the coping 20. The outer protection slope 40 comprises a twisted king character layer 41 and an outer stone layer 42 which are distributed up and down, the twisted king character layer 41 comprises a plurality of twisted king character blocks, each twisted king character block is heavy by 2-5 tons, the twisted king character layer 41 is abutted against the side surface of the coping 20, and the twisted king character blocks can weaken the impact force of waves so as to protect the outer stone layer 42. The outer rock layer 42 is arranged on the side surface of the dyke core layer 12, the outer rock layer 42 is formed by stacking a plurality of blocks of stones, the weight of each stone is 200-300kg, the thickness of the outer rock layer 42 is 900m, and the outer rock layer 42 plays a role in protecting the dyke core layer 12.
The foot protector 50 is a stone layer, the foot protector 50 is formed by stacking a plurality of stones, the weight of each stone is 100-400kg, the cross section of the foot protector 50 is trapezoidal, and the foot protector 50 is arranged to protect the bottom of the outer protection slope 40. The structure of the dike core, the coping, the sand bag filling layer, the outer slope protection, the inner slope protection, the first steel sheet pile and the like is complete, the interval is clear, and the arrangement and the disassembly are convenient.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A cofferdam structure, its characterized in that: including dyke core (10) and locate coping (20) above dyke core (10), dyke core (10) are including filling sand bag layer (11), fill sand bag layer (11) and locate on the silt layer, the outside, top and the inboard of filling sand bag layer (11) all are equipped with geotechnological cloth (30), geotechnological cloth (30) top in dyke core (10) outside is equipped with outer bank protection (40), the bottom of outer bank protection (40) is equipped with banket (50), geotechnological cloth (30) top inboard of dyke core (10) is equipped with interior bank protection (60), be equipped with first steel sheet pile (70) of inserting the silt layer on interior bank protection (60).
2. Cofferdam structure according to claim 1, characterized in that: and a second steel sheet pile (80) is arranged on the inner protection slope (60) on one side of the first steel sheet pile (70) far away from the embankment core (10).
3. Cofferdam structure according to claim 2, characterized in that: the second steel sheet pile (80) is provided with a plurality of uniformly distributed steel pipe piles (90) on one side far away from the first steel sheet pile (70), and the first steel sheet pile (70), the second steel sheet pile (80), the embankment core (10) and the inner protection slope (60) are reinforced on the sludge layer by the steel pipe piles (90).
4. Cofferdam structure according to claim 3, characterized in that: the first steel sheet pile (70) and the second steel sheet pile (80) are Larsen steel sheet piles.
5. Cofferdam structure according to claim 1, characterized in that: the dike core (10) further comprises a dike core layer (12) with a triangular cross section, the cross sections of the sand filling bag layer (11) and the dike core layer (12) are trapezoidal, and the coping (20) is arranged above the sand filling bag layer (11).
6. Cofferdam structure according to claim 1, characterized in that: the outer protection slope (40) comprises a twisted king character layer (41) and an outer stone layer (42) which are distributed up and down.
7. Cofferdam structure according to claim 6, characterized in that: the twisted Chinese character layer (41) comprises a plurality of twisted Chinese character blocks, and each twisted Chinese character block weighs 2-5 tons.
8. Cofferdam structure according to claim 1, characterized in that: the inner protection slope (60) comprises an inner stone layer (62) and a crushed stone layer (61) which are distributed up and down.
9. Cofferdam structure according to claim 1, characterized in that: the coping (20) is an inverted T-shaped concrete block.
10. Cofferdam structure according to claim 1, characterized in that: the protective feet (50) are stone layers, and the cross sections of the protective feet (50) are trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921071882.5U CN210507492U (en) | 2019-07-09 | 2019-07-09 | Cofferdam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921071882.5U CN210507492U (en) | 2019-07-09 | 2019-07-09 | Cofferdam structure |
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| CN210507492U true CN210507492U (en) | 2020-05-12 |
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| CN201921071882.5U Active CN210507492U (en) | 2019-07-09 | 2019-07-09 | Cofferdam structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397051A (en) * | 2019-07-09 | 2019-11-01 | 中国铁建港航局集团有限公司 | A kind of cofferdam structure and construction method |
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2019
- 2019-07-09 CN CN201921071882.5U patent/CN210507492U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397051A (en) * | 2019-07-09 | 2019-11-01 | 中国铁建港航局集团有限公司 | A kind of cofferdam structure and construction method |
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