CN210658012U - A plugging device for steel overhead bin cofferdam - Google Patents
A plugging device for steel overhead bin cofferdam Download PDFInfo
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- CN210658012U CN210658012U CN201920665036.XU CN201920665036U CN210658012U CN 210658012 U CN210658012 U CN 210658012U CN 201920665036 U CN201920665036 U CN 201920665036U CN 210658012 U CN210658012 U CN 210658012U
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- steel
- plugging device
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- cofferdam
- tapered sleeve
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Abstract
The utility model provides a plugging device for steel hanging box cofferdam, including the top panel, the top panel is seted up and is protected the last port that the external diameter of a section of thick bamboo agreed with the steel mutually, follows it is used for the nestification to be provided with downwards around the port to go up the tapered sleeve of a section of thick bamboo is protected to the steel, tapered sleeve's lower port is provided with hollow structure's lower baffle. The utility model discloses a set up the toper sleeve, the bottom sealing concrete flow baffle down that the guide was pour, the steel protects a section of thick bamboo and the gap between the lower baffle is plugged up by annular sand bag, and the leakproofness is good, is difficult for making the concrete outflow.
Description
Technical Field
The utility model discloses a cushion cap construction technical field among the underwater bridge engineering, more specifically relates to a plugging device for steel hanging box cofferdam.
Background
When the construction operation of the bridge deep water foundation steel hanging box cofferdam is carried out, the gap between the bottom plate of the steel hanging box and the steel casing needs to be blocked before pouring the bottom sealing concrete after the steel hanging box is put in place. The plugging method in the prior art mainly comprises the following two methods: firstly, a plurality of arc-shaped plates are adopted to surround the steel casing; and secondly, a circular air bag is fixed between the bottom plate of the steel crane and the steel casing. In the process of pouring the bottom sealing concrete by the method, the water leakage condition is easy to generate slippage under the action of buoyancy and the self weight of the concrete, the construction cost is increased, and the construction process is complicated. Therefore, the leakage stopping device for the steel suspension box cofferdam, which can avoid the outflow of concrete around the steel casing and prevent water leakage, is urgently needed in the construction site at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to the not enough of above-mentioned prior art, the utility model provides a can avoid steel to protect a below in-process to produce and slide to avoid the concrete to leak and prevent that the hourglass from advancing steel hanging box cofferdam plugging device in the steel hanging box.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the utility model provides a plugging device for steel overhead bin cofferdam, includes the device body, the device body includes the top panel, the top panel is seted up and is agreed with the external diameter of steel casing mutually the last port, follows it is provided with downwards to be used for nested around the last port the tapered sleeve of steel casing, the telescopic lower port of toper is provided with hollow structure's lower baffle.
And a longitudinal stiffened plate is arranged on the outer side wall of the conical sleeve.
The gradient coefficient of the conical sleeve is in the range of 0.2-0.3.
The inner diameter of the upper port of the conical sleeve is 20-24cm larger than the outer diameter of the steel casing.
The inner diameter of the lower port of the conical sleeve is 9-14cm larger than the outer diameter of the steel casing.
The inner diameter of the lower baffle is 3-6cm larger than the outer diameter of the steel casing.
Compared with the prior art, the utility model beneficial effect be: the poured bottom sealing concrete is guided to flow to the lower baffle plate through the guiding action of the conical sleeve, a gap between the steel casing and the lower baffle plate is blocked by the annular sandbag, the sealing performance is good, and the concrete is not easy to flow outwards; the bottom keel on the upper part of the through hole in the middle of the bottom plate of the steel crane can enhance the sealing effect of the gap between the steel casing and the upper baffle plate and effectively avoid concrete leakage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a longitudinal sectional view of the present invention in an operating state.
Reference numerals: 1-bottom keel; 2-self-compacting micro-expansion segregation-resistant concrete; 3-steel casing; 4-an upper baffle plate; 5-longitudinal stiffened plate; 6-lower baffle; 7-a tapered sleeve; 8-steel crane bottom plate; 9-ring-shaped sandbag.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in the attached drawings 1-2, the plugging device for the steel suspension box cofferdam comprises a device body, wherein the device body comprises an upper panel 4, the upper panel 4 is provided with an upper port matched with the outer diameter of a steel protection cylinder 3, a conical sleeve 7 used for nesting the steel protection cylinder 3 is downwards arranged along the periphery of the upper port, the lower port of the conical sleeve 7 is provided with a lower baffle 6 with a hollow structure, the inner diameter of the lower baffle 6 is larger than the outer diameter of the steel protection cylinder 3 by 3-6cm, the outer side wall of the conical sleeve 7 is provided with a longitudinal reinforcing plate 5, the gradient coefficient of the conical sleeve 7 ranges from 0.2 to 0.3, the inner diameter of the upper port of the conical sleeve 7 is larger than the outer diameter of the steel protection cylinder 3 by 20-24cm, and the inner diameter of the lower port of the conical sleeve 7 is larger than the outer diameter of the steel protection cylinder. The bottom plate 8 of the steel crane is provided with a through hole, the inner diameter of the through hole is matched with the outer diameter of the steel casing 3, and the bottom keel 1 is arranged above the bottom plate 8 of the steel crane around the through hole, so that concrete around the external water steel casing 3 can be prevented from flowing out; the gap between the lower baffle and the steel casing is filled with an annular sandbag 9, a leakage stoppage king or an anchoring agent, so that concrete leakage can be effectively avoided.
When the device works, the lower edge of the upper baffle plate 4 is erected on the upper edge of the bottom plate 8 of the steel crane, after the steel crane is put in place under water, a guide pipe is arranged around the steel casing 3, then self-compacting micro-expansion segregation-resistant concrete 2 is poured under water until the gap between the steel casing 3 and the bottom plate 8 of the steel crane is filled, and the thickness of the bottom sealing concrete reaches the designed thickness; and after the pouring is finished for 72 hours, and the compressive strength of the concrete is more than 70% of the designed compressive strength, starting to pump the steel hanging box cofferdam.
The above description is only the preferred embodiment of the present invention, but the present invention is not limited to the above-mentioned specific embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the inventive concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a plugging device for steel overhead bin cofferdam, includes the device body, characterized by, the device body includes top panel (4), top panel (4) are seted up and are protected the external diameter of a section of thick bamboo (3) with the steel and agree with the last port mutually, follow be provided with downwards around the last port and be used for the nestification a tapered sleeve (7) of a section of thick bamboo (3) are protected to the steel, the lower port of tapered sleeve (7) is provided with hollow structure's lower baffle (6).
2. The plugging device for the steel hanging box cofferdam according to claim 1, wherein the outside side wall of the conical sleeve (7) is provided with a longitudinal stiffened plate (5).
3. A plugging device for a steel suspension box cofferdam according to claim 1, wherein the gradient coefficient of said tapered sleeve (7) ranges from 0.2 to 0.3.
4. The plugging device for the steel suspension box cofferdam of claim 1, wherein the inner diameter of the upper port of the tapered sleeve (7) is 20-24cm larger than the outer diameter of the steel casing (3).
5. The plugging device for the steel suspension box cofferdam of claim 1, wherein the inner diameter of the lower port of the conical sleeve (7) is 9-14cm larger than the outer diameter of the steel casing (3).
6. The plugging device for the steel suspension box cofferdam of claim 1, wherein the inner diameter of the lower baffle (6) is 3-6cm larger than the outer diameter of the steel casing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920665036.XU CN210658012U (en) | 2019-05-10 | 2019-05-10 | A plugging device for steel overhead bin cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920665036.XU CN210658012U (en) | 2019-05-10 | 2019-05-10 | A plugging device for steel overhead bin cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210658012U true CN210658012U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920665036.XU Active CN210658012U (en) | 2019-05-10 | 2019-05-10 | A plugging device for steel overhead bin cofferdam |
Country Status (1)
| Country | Link |
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| CN (1) | CN210658012U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172913A (en) * | 2019-05-10 | 2019-08-27 | 中国建筑第六工程局有限公司 | A kind of device for plugging for steel suspended box cofferdam |
| CN111827322A (en) * | 2020-07-27 | 2020-10-27 | 华东交通大学 | Steel hanging box device for checking and maintaining underwater bearing platform of existing bridge |
-
2019
- 2019-05-10 CN CN201920665036.XU patent/CN210658012U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172913A (en) * | 2019-05-10 | 2019-08-27 | 中国建筑第六工程局有限公司 | A kind of device for plugging for steel suspended box cofferdam |
| CN111827322A (en) * | 2020-07-27 | 2020-10-27 | 华东交通大学 | Steel hanging box device for checking and maintaining underwater bearing platform of existing bridge |
| CN111827322B (en) * | 2020-07-27 | 2022-07-12 | 华东交通大学 | Steel hanging box device for checking and maintaining underwater bearing platform of existing bridge |
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