CN217630225U - Anti-floating system for underwater steel pipe encapsulation - Google Patents
Anti-floating system for underwater steel pipe encapsulation Download PDFInfo
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- CN217630225U CN217630225U CN202221669776.9U CN202221669776U CN217630225U CN 217630225 U CN217630225 U CN 217630225U CN 202221669776 U CN202221669776 U CN 202221669776U CN 217630225 U CN217630225 U CN 217630225U
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Abstract
An anti-floating system for encapsulating underwater steel pipes comprises pre-buried steel pipes, anti-floating underwater concrete, anti-floating I-shaped steel, anti-floating steel wire ropes and templates for pouring; the anti-floating steel wire rope is positioned on the top of the embedded steel pipe, the two ends of the anti-floating steel wire rope face downwards and are connected with the anti-floating I-shaped steel positioned at the bottom of the foundation trench, and the anti-floating underwater concrete is supported by the template for pouring, so that the bottom of the embedded steel pipe is sealed and formed. The utility model discloses an adopt the anti wire rope that floats of many atress and anti I-steel joint action that floats, form whole tension with the anti underwater concrete that floats of foundation trench, effectively resist the upwards frictional force to the steel pipe when steel pipe self buoyancy and underwater concrete pour under water.
Description
Technical Field
The utility model relates to a water conservancy water intaking engineering field, concretely relates to anti system of floating that is used for steel pipe to seal under water.
Background
In water conservancy projects, a water taking head steel pipe is embedded in a deep water area, and an upward buoyancy force exists for the underwater embedded steel pipe due to the existence of a high water head; and upward friction force to the steel pipe when the underwater concrete is poured. When the self weight of the embedded steel pipe can not resist the deep water buoyancy, various measures are needed to prevent the embedded steel pipe from floating upwards. At present, the most common anti-floating means is to utilize a self-weight structure to resist floating or to arrange an anti-pulling pile. The conventional anti-floating design is different from the underwater steel pipe embedding working condition, and the steel pipe is embedded in a deep water area, so that the aim of increasing the self weight cannot be fulfilled by providing a counterweight to offset buoyancy and friction; the uplift pile construction is not suitable for the deep water area environment, has the problems of needing to set up a large-scale water platform, long construction period, high difficulty, high construction cost and the like, and is difficult to ensure the construction quality to influence the expected effect of the project.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a construction difficulties such as buoyancy and frictional force are resisted to the pre-buried steel pipe in deep water area can be solved to the provision, and simple structure is easy, and economy is reasonable, the anti system of floating that is used for steel pipe to seal under water that maneuverability is good.
The utility model provides a technical scheme that its technical problem adopted is:
an anti-floating system for encapsulating underwater steel pipes comprises pre-buried steel pipes, anti-floating underwater concrete, anti-floating I-shaped steel, anti-floating steel wire ropes and templates for pouring; the anti-floating steel wire rope is positioned on the top of the embedded steel pipe, two ends of the anti-floating steel wire rope are downward and are connected with the anti-floating I-shaped steel positioned at the bottom of the foundation trench, and the anti-floating underwater concrete is cast by a formwork support so as to encapsulate the bottom of the embedded steel pipe and form the anti-floating underwater concrete.
And furthermore, the two ends of the anti-floating steel wire rope are connected with shackles welded on the anti-floating I-shaped steel through shackles.
Further, the number of the anti-floating steel wire ropes is set to be related to the required anti-floating force.
Further, the template for pouring is a sand bag.
Further, the template for pouring is arranged at the end part of the foundation trench and the waist of the embedded steel pipe, so that the second-bin anti-floating underwater concrete is formed in one step and construction joints are reduced.
Further, the anti-floating underwater concrete is tightly combined with the foundation trench to form an integral structure.
Further, the height of the anti-floating underwater concrete is 70-90cm.
The beneficial effects of the utility model are that: 1. by adopting the combined action of a plurality of stressed anti-floating steel wire ropes and anti-floating I-shaped steel, the anti-floating steel wire ropes and the anti-floating underwater concrete of the foundation trench form integral tension, effectively resist the self buoyancy and the casting friction force of the encapsulated concrete, and avoid the floating phenomenon of the embedded steel pipe when the next layer of concrete is poured; 2. the number of the anti-floating steel wire ropes can be adjusted after calculation according to the anti-floating force, so that the flexible application degree is improved; 3. the structure is simple and feasible, the economy and the reasonability are realized, the technology is mature and reasonable, the application prospect is wide, the operability is good, and the economic benefit and the social benefit are extremely good.
Drawings
Fig. 1 is a cross-sectional view of an anti-floating system according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the anti-floating system of the embodiment of the present invention applied to concrete encapsulated by immersed tube method;
in the figure: 1. the method comprises the following steps of pre-buried steel pipes, 2 anti-floating steel wire ropes, 3 anti-floating underwater concrete, 4 anti-floating I-shaped steel, 5 foundation grooves, 6 excavation lines, 7 horizontal holes, 8 pouring templates and 9 steel pipe positioning frames.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1-2, an anti-floating system for underwater steel pipe encapsulation comprises an embedded steel pipe 1, anti-floating underwater concrete 3, anti-floating i-shaped steel 4, an anti-floating steel wire rope 2 and a template 8 for pouring; the anti-floating steel wire rope 2 is located on the top of the embedded steel pipe 1, two ends of the anti-floating steel wire rope face downwards, the anti-floating steel wire rope is connected with the anti-floating I-shaped steel 4 located at the bottom of the foundation trench 5, the anti-floating underwater concrete 3 is supported by the template 8 to be poured, and then the bottom of the embedded steel pipe 1 is sealed and formed.
In this embodiment, the two ends of the anti-floating steel wire rope 2 are connected with the shackles welded on the anti-floating i-shaped steel 4 through oblique buckles.
In this embodiment, the number of the anti-floating steel cables 2 is set to be related to the required anti-floating force.
In this embodiment, the formwork 8 for pouring is a sand bag.
In this embodiment, the template 8 for pouring is arranged at the end of the foundation trench 5 and the waist of the embedded steel pipe 1, so that the second-bin anti-floating underwater concrete is formed at one time and construction joints are reduced.
In this embodiment, the anti-floating underwater concrete 3 is tightly combined with the foundation trench 5 to form an integral structure.
In this embodiment, the height of the anti-floating underwater concrete 3 is 80cm.
The construction method comprises the following steps:
after the embedded steel pipe 1 is installed on the steel pipe positioning frame 9, the anti-floating steel wire rope 2, the anti-floating I-shaped steel 4 and the template 8 for pouring are installed, then the anti-floating underwater concrete 3 is poured to the bottom of the embedded steel pipe 1, the height of the anti-floating underwater concrete is 80cm, and the anti-floating underwater concrete 3 is formed.
The application example is as follows: on the other side of the water intake horizontal tunnel 7, when the underwater embedded steel pipe 1 at the reservoir end is encapsulated and poured along the excavation line 6, more than 200 tons of buoyancy can be generated, the self weight of the embedded steel pipe 1 is about 40 tons, three stress paths of the embedded steel pipe 1 are calculated, the stress of the anti-floating steel wire rope 2 is ensured, and the self weight of the embedded steel pipe 1, the gravity of the anti-floating underwater concrete 3 and the bonding force of the anti-floating underwater concrete 3 and the foundation trench 5 are integrated to resist the buoyancy. Finally, 5 meters of the anti-floating underwater concrete 3 in the second bin is reserved at the mountain end of the embedded steel tube 1, and the encapsulated concrete of the embedded steel tube 1 is ensured to be formed at one time when the anti-floating underwater concrete 3 in the second bin is poured, so that construction joints between the embedded steel tube and an anti-floating system are reduced.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides an anti system of floating for underwater steel pipe is enveloped, includes pre-buried steel pipe, its characterized in that: the floating-resistant underwater concrete is also provided with floating-resistant underwater concrete, floating-resistant I-shaped steel, a floating-resistant steel wire rope and a template for pouring; the anti-floating steel wire rope is positioned on the top of the embedded steel pipe, the two ends of the anti-floating steel wire rope face downwards and are connected with the anti-floating I-shaped steel positioned at the bottom of the foundation trench, and the anti-floating underwater concrete is supported by the template for pouring, so that the bottom of the embedded steel pipe is sealed and formed.
2. The anti-floating system for underwater steel pipe encapsulation of claim 1, wherein: the anti wire rope both ends that float are connected with the shackle of welding on anti superficial I-steel through the shackle.
3. Anti-floating system for underwater steel pipe encapsulation according to claim 1 or 2, characterized in that: the template for pouring is a sand bag.
4. Anti-floating system for underwater steel pipe encapsulation according to claim 1 or 2, characterized in that: the template for pouring is arranged at the end part of the foundation trench and the waist part of the embedded steel pipe.
5. Anti-floating system for underwater steel pipe encapsulation according to claim 1 or 2, characterized in that: the anti-floating underwater concrete is tightly combined with the foundation trench to form an integral structure.
6. Anti-floating system for underwater steel pipe encapsulation according to claim 1 or 2, characterized in that: the height of the anti-floating underwater concrete is 70-90cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221669776.9U CN217630225U (en) | 2022-07-01 | 2022-07-01 | Anti-floating system for underwater steel pipe encapsulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221669776.9U CN217630225U (en) | 2022-07-01 | 2022-07-01 | Anti-floating system for underwater steel pipe encapsulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217630225U true CN217630225U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221669776.9U Active CN217630225U (en) | 2022-07-01 | 2022-07-01 | Anti-floating system for underwater steel pipe encapsulation |
Country Status (1)
| Country | Link |
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| CN (1) | CN217630225U (en) |
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2022
- 2022-07-01 CN CN202221669776.9U patent/CN217630225U/en active Active
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