CN210315611U - Hanging box cofferdam back cover concrete leak protection structure - Google Patents
Hanging box cofferdam back cover concrete leak protection structure Download PDFInfo
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- CN210315611U CN210315611U CN201921241487.7U CN201921241487U CN210315611U CN 210315611 U CN210315611 U CN 210315611U CN 201921241487 U CN201921241487 U CN 201921241487U CN 210315611 U CN210315611 U CN 210315611U
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- hanging box
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Abstract
The utility model discloses a hanging box cofferdam back cover concrete leak protection structure, including hanging box and stake, be provided with the stake via hole with stake one-to-one on the bottom plate of hanging box, and the diameter of stake via hole is greater than the diameter of stake, every stake via hole of hanging box is equipped with a circle hoop and enclosing cover, the internal diameter of circle hoop matches with the diameter of stake, and the enclosing cover is connected between circle hoop and stake via hole, and when the hanging box fell, the circle hoop just in time overlaps on the corresponding stake, and the hanging box drives the circle hoop to fall together through the enclosing cover of the big end down's awl tube-shape; when the hanging box falls in place, the height of the enclosure is gradually reduced to be circular until the enclosure is flush with the bottom plate of the hanging box, so that the pile through hole is blocked. The automatic plugging of hanging box bottom plate pile via holes is realized by adopting a mode similar to a mode of penetrating a skirt from top to bottom, and a constructor does not need to go down to the hanging box for underwater operation, so that concrete cannot leak from the pile via holes during concrete pouring, the construction efficiency is improved, and the construction difficulty and the labor intensity of workers are reduced.
Description
Technical Field
The utility model belongs to the technical field of the engineering construction for when solving hanging box cofferdam construction, the problem of bottom sealing hourglass concrete.
Background
The hanging box is generally used in the situation that the riverbed is deeper, the elevation of the bottom of the bearing platform is below the water surface and is higher than the riverbed, and particularly in the geological situation that the water flow is very urgent and the riverbed is not suitable for the sinking of the steel pouring jacket. The steel suspension box is used as a water-blocking structure for bearing platform construction, has the function of enclosing water through the sealing concrete on the side plates and the bottom plate of the suspension box, provides a dry environment without water for the bearing platform construction, and has the characteristics of short construction period, small water flow resistance, contribution to navigation, no need of sinking into a riverbed, small construction difficulty, small concrete consumption and the like, thereby being widely applied to large-span deepwater bridges.
The lifting box bottom plate is provided with pile through holes in one-to-one correspondence with the piles, the lifting box firstly sleeves the pile through holes on the piles one by one when falling, and in order to ensure the smooth falling of the lifting box, the diameter of each pile through hole must be larger than that of each pile. However, in the concrete pouring process, the gap between the pile through hole and the pile is easy to cause the problem of concrete leakage. The current solutions are: after the hanging box is lifted in place, a constructor puts the hanging box down, and the gap is sealed by horizontally pushing two steel plates which are arranged on the inner side of the bottom of the hanging box and can slide relatively and close to each other or a double-layer sleeve which is staggered up and down. However, due to the fact that the depth of water in the hanging box is large, the method needs constructors to carry out water launching operation, construction difficulty is high, and labor intensity is high.
SUMMERY OF THE UTILITY MODEL
Not enough to exist among the prior art, the utility model aims at providing an automatic block structure of hanging case bottom plate stake via hole does not need constructor to go down to carry out underwater operation in the hanging case.
Therefore, the utility model discloses the technical scheme who adopts does: a bottom sealing concrete leakage-proof structure of a hanging box cofferdam comprises a hanging box and piles, wherein pile through holes which are in one-to-one correspondence with the piles are formed in a bottom plate of the hanging box, the diameter of each pile through hole is larger than that of each pile, each pile through hole of the hanging box is provided with a circular hoop and an enclosure, the inner diameter of each circular hoop is matched with that of each pile, the enclosure is connected between the circular hoop and the corresponding pile through hole, when the hanging box falls, the circular hoops are just sleeved on the corresponding piles, and the hanging box drives the circular hoops to fall together through the conical enclosure with the small upper part and the large lower part; when the hanging box falls in place, the height of the enclosure is gradually reduced to be circular until the enclosure is flush with the bottom plate of the hanging box, so that the pile through hole is blocked.
Preferably, the enclosure is made of air duct cloth. The air duct cloth has high strength, light weight and good plugging effect, is widely applied to engineering construction, and is convenient to obtain materials.
Preferably, the upper end of the enclosure is circumferentially fixed on the circular hoop through screws, and the lower end of the enclosure is circumferentially fixed on the bottom plate of the hanging box through screws.
The utility model has the advantages that: this structure adopts and is similar to wearing the automatic shutoff of skirt from top to bottom's mode realization hanging box bottom plate stake via hole, does not need constructor to carry out underwater operation in the hanging box down, and the stake via hole can not leak the concrete when guaranteeing concrete placement, has improved the efficiency of construction, has reduced the construction degree of difficulty and workman's intensity of labour.
Drawings
Fig. 1 shows the state of the round hoop and the enclosure of the present invention falling along with the hanging box.
Figure 2 is the utility model discloses a circle hoop, enclose the state that the cover carries out the shutoff to the stake via hole.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
referring to fig. 1 and 2, the drop box cofferdam bottom sealing concrete leakage-proof structure mainly comprises a drop box 1, piles 2, circular hoops 3 and an enclosure 4.
Be provided with the stake via hole with stake 2 one-to-one on the bottom plate of hanging case 1, stake 2 is fixed, and when hanging case 1 whereabouts, stake 2 inserts in the stake via hole. The diameter of the pile through hole is larger than that of the pile 2 to ensure that the hanging box 1 falls smoothly. The above description is prior art and is not repeated herein.
Each pile through hole of the hanging box 1 is provided with a round hoop 3 and an enclosure 4 for plugging a gap between the pile through hole and the pile 2 to prevent water from entering or concrete from leaking. The internal diameter of the circular hoop 3 is matched with the diameter of the pile 2, and the enclosure 4 is connected between the circular hoop 3 and the pile through hole. The enclosure 3 is big at the top and small at the bottom, and just divides the top and the bottom of the bottom plate of the hanging box 1.
When the hanging box 1 falls, the circular hoops 3 are just sleeved on the corresponding piles 2, and the hanging box 1 drives the circular hoops 3 to fall together through the conical enclosure 4 with a small upper part and a big lower part, as shown in the state of fig. 1. After the hanging box 1 falls in place, the height of the enclosure 4 is gradually reduced to be circular until the enclosure is flush with the bottom plate of the hanging box 1, so that the pile through hole is blocked, and the state is shown in fig. 2. When the hanging box 1 falls, the circular hoop 3 is higher than the bottom plate of the hanging box 1, and the circular hoop 3 and the enclosure 4 fall along with the hanging box 1 under the pulling force of the falling of the hanging box 1. After the hanging box 1 falls in place, the enclosure 4 can deform to be in a ring shape, and the pile through hole is just plugged.
The enclosure 4 can be made of soft materials, such as air duct cloth; or a plurality of skirt-shaped steel plates which are uniformly distributed on the circumference can be spliced, the steel plates are in a cone shape with a small top and a large bottom when falling, and the steel plates are in a ring shape after falling in place.
Preferably, the upper end of the enclosure 4 is fixed to the circular hoop 3 by screws in the circumferential direction, and the lower end is fixed to the bottom plate of the hanging box 1 by screws in the circumferential direction, so that the stability is ensured.
Claims (3)
1. The utility model provides a hanging box cofferdam back cover concrete leak protection structure, includes hanging box (1) and stake (2), be provided with the stake via hole with stake (2) one-to-one on the bottom plate of hanging box (1), and the diameter of stake via hole is greater than the diameter of stake (2), its characterized in that: each pile through hole of the hanging box (1) is provided with a circular hoop (3) and an enclosure (4), the inner diameter of the circular hoop (3) is matched with the diameter of the pile (2), the enclosure (4) is connected between the circular hoop (3) and the pile through hole, when the hanging box (1) falls, the circular hoop (3) is just sleeved on the corresponding pile (2), and the hanging box (1) drives the circular hoop (3) to fall together through the conical enclosure (4) with a small upper part and a large lower part; when the hanging box (1) falls in place, the height of the enclosure (4) is gradually reduced to be circular until the enclosure is flush with the bottom plate of the hanging box (1), so that the pile through hole is blocked.
2. The drop box cofferdam bottom-sealing concrete leakage-proof structure according to claim 1, characterized in that: the enclosure (4) is made of air duct cloth.
3. The drop box cofferdam bottom-sealing concrete leakage-proof structure according to claim 1, characterized in that: the upper end circumference of the enclosure (4) is fixed on the circular hoop (3) through screws, and the lower end circumference is fixed on the bottom plate of the hanging box (1) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921241487.7U CN210315611U (en) | 2019-08-02 | 2019-08-02 | Hanging box cofferdam back cover concrete leak protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921241487.7U CN210315611U (en) | 2019-08-02 | 2019-08-02 | Hanging box cofferdam back cover concrete leak protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210315611U true CN210315611U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921241487.7U Active CN210315611U (en) | 2019-08-02 | 2019-08-02 | Hanging box cofferdam back cover concrete leak protection structure |
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| Country | Link |
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| CN (1) | CN210315611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575365A (en) * | 2022-04-18 | 2022-06-03 | 广西航务建设工程有限公司 | Novel cofferdam structure for construction of tie beam in water and construction method thereof |
-
2019
- 2019-08-02 CN CN201921241487.7U patent/CN210315611U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575365A (en) * | 2022-04-18 | 2022-06-03 | 广西航务建设工程有限公司 | Novel cofferdam structure for construction of tie beam in water and construction method thereof |
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