CN216238598U - Double-row steel pipe pile cofferdam for bagged clay breakwater at top of cofferdam - Google Patents
Double-row steel pipe pile cofferdam for bagged clay breakwater at top of cofferdam Download PDFInfo
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- CN216238598U CN216238598U CN202122565791.0U CN202122565791U CN216238598U CN 216238598 U CN216238598 U CN 216238598U CN 202122565791 U CN202122565791 U CN 202122565791U CN 216238598 U CN216238598 U CN 216238598U
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- cofferdam
- steel pipe
- pipe pile
- steel
- clay
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 98
- 239000010959 steel Substances 0.000 title claims abstract description 98
- 239000004927 clay Substances 0.000 title claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 25
- 239000004746 geotextile Substances 0.000 claims abstract description 14
- 239000012528 membrane Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 abstract description 8
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The double-row steel pipe pile cofferdam for the bagged clay breakwater piled on the top of the cofferdam comprises steel pipe piles (1), geotextiles (4), waterproof membranes (5), steel purlins (2), round steel pull rods (3), weir core filling soil (6) and bagged clay (7). The steel pipe piles are arranged in two rows and are distributed at equal intervals; the steel pipe piles at the waterside are connected by using a lock catch, and the lock catch is not used at the backwater side; the geotextile is positioned inside the cofferdam steel pipe pile; the waterproof membrane is positioned between the steel pipe pile on the water side of the cofferdam and the filling soil; the steel purlin is positioned on the outer side of the steel pipe pile of the cofferdam and is connected with the round steel pull rod into a whole; the clay in bags is located at the top of the steel pipe pile cofferdam, and the section of the clay in bags is trapezoidal. The steel pipe pile cofferdam can provide lateral restraint for filling soil in the weir core, avoid the use of slope relief and reduce the floor area of the cofferdam; the top sets up the clay breakwater in bags and can prevent that the wave from crossing the cofferdam, gets into the construction place, consequently can reduce the cofferdam height, strengthens cofferdam stability, reduces engineering cost.
Description
Technical Field
The utility model relates to a double-row steel pipe pile cofferdam for a bagged clay breakwater piled on the top of the cofferdam, belonging to the technical field of hydraulic engineering.
Background
In recent years, as the number of works increases, the number of works is increased, and more works are designed to the waters, it is necessary to use a cofferdam to provide a dry field. Common cofferdams include steel cofferdams, concrete cofferdams, earth-rock cofferdams and the like, and in actual engineering, a proper cofferdam form is selected according to comprehensive consideration of factors such as hydrogeological conditions, construction period and construction cost, so that the engineering requirements are met. However, the cofferdam generally requires the top of the cofferdam to be higher than the wave height by 0.5m to ensure the engineering safety, but because the double rows of steel pipe piles are filled with soil, the excessively high cofferdam height can increase the engineering cost and reduce the stability of the steel pipe piles of the cofferdam.
Disclosure of Invention
The object of the present invention is to provide,
the technical scheme includes that the double-row steel pipe pile cofferdam for filling the bagged clay breakwater at the top of the cofferdam comprises two rows of steel pipe piles, geotextile, waterproof membranes, steel purlins, round steel pull rods and bagged clay, wherein the lower ends of the steel pipe piles are inserted into a riverbed and are distributed at equal intervals. The steel pipe piles at the waterside are connected by using the lock catches, and the lock catches are not used at the waterside.
The geotextile is positioned inside the cofferdam steel pipe pile and used for preventing the loss of the filling soil in the cofferdam.
The waterproof membrane is positioned between the steel pipe pile on the water side of the cofferdam and the filling soil; used for preventing water from infiltrating outside the cofferdam.
The steel purlin is positioned on the outer side of the steel pipe pile of the cofferdam and is connected with the round steel pull rod into a whole; the clay in bags is located the top of the steel pipe pile cofferdam, and the section is trapezoidal and used for preventing waves from crossing the cofferdam.
The distance between two rows of the steel pipe piles is B, and the B is more than 4m and less than 6 m.
The steel purlin and the round steel pull rod are located 0.8m below the top of the steel pipe pile.
The steel pipe pile cofferdam has the beneficial effects that the steel pipe pile cofferdam can provide lateral restraint for filling soil in the weir core, so that the use of slope relief is avoided, and the floor area of the cofferdam is reduced; the bagged clay breakwater arranged at the top can prevent waves from crossing the cofferdam and entering a construction site, so that the height of the cofferdam can be reduced, the stability of the cofferdam is enhanced, and the construction cost is reduced; according to the steel pipe pile cofferdam, the steel pipe piles are connected into a whole in the length direction by the steel purlins at the two sides of the steel pipe pile cofferdam, and are connected into a whole in the width direction by the pull rods, so that the stability of the cofferdam is enhanced; the steel pipe piles at the waterside are connected by using the lock catches, and waterproof impervious waterproof films are arranged before the steel pipe piles and the filled soil, so that the cofferdam is prevented from leaking.
Drawings
FIG. 1 is a schematic cross-sectional view of a double-row steel pipe pile cofferdam for filling a bagged soil breakwater at the top of the cofferdam according to the utility model;
FIG. 2 is a schematic top view of a double-row steel pipe pile cofferdam for filling a bagged soil breakwater at the top of the cofferdam according to the utility model;
FIG. 3 is a construction flow chart of the double-row steel pipe pile cofferdam of the bagged soil breakwater piled on the top of the cofferdam of the utility model;
in the figure, 1 is a steel pipe pile; 2, steel purlin; 3 is a pull rod; 4 is geotextile; 5 is a waterproof film; 6, filling soil into the weir core; and 7 is a breakwater formed by bagged clay.
Detailed Description
As shown in fig. 1, the double-row steel pipe pile cofferdam for filling the bagged soil breakwater at the top of the cofferdam of the present embodiment includes: the steel pipe pile comprises a steel pipe pile 1, a steel purlin 2, a pull rod 3, geotextile 4, a waterproof membrane 5, weir core filling 6 and a breakwater 7 formed by bagged clay.
The utility model provides a fill up double steel-pipe pile cofferdam of bagged soil breakwater at cofferdam top, by double steel-pipe pile 1 insert in soil, enclose purlin 2 by the steel and be connected as a whole with railing 3, laid geotechnological cloth 4 in cofferdam back of the body water steel-pipe pile inboard, laid water proof membrane 5 in cofferdam near water steel-pipe pile inboard, fill in the middle of double steel-pipe pile earth 6, build the breakwater 7 that bag dress clay formed at cofferdam filling top.
The steel pipe piles approaching water are connected through the lock catches, integrity of the steel pipe piles is enhanced, and meanwhile the waterproof effect is achieved.
As shown in fig. 3, the specific construction method of the cofferdam structure of the present invention includes the following steps:
(1) measuring and lofting: and (4) setting key point location lofting by a measurer according to a design drawing, and marking out a serial number.
(2) Setting a guide frame: and H-shaped steel is inserted and punched at key point positions, 25# channel steel is erected as a guide frame, and the clear distance between the channel steels is 680 mm.
(3) Inserting and driving the steel pipe pile: the piling ship inserts and drives the steel pipe pile along the positioning direction, and the steel pipe pile is inserted and driven simultaneously, and the horizontal ruler and the vertical ball hanging line are repeatedly corrected in two mutually perpendicular directions to correct the deviation in time so as to ensure that the steel pipe pile is inserted and straightened.
(4) The geotextile and the waterproof membrane are hung: and after the steel pipe piles at the two sides are driven and inserted to push for 30m, laying geotextile and waterproof membrane. Fixing the rolled geotextile and the waterproof membrane with the measured lengths on a steel pipe, manually laying the geotextile and the waterproof membrane during laying, and fixing the geotextile and the waterproof membrane on the steel pipe pile by using a clamp after laying is finished; the geotextile is positioned inside the steel pipe piles of the cofferdam and used for preventing the loss of the filling soil in the cofferdam, and the waterproof membrane is positioned between the steel pipe piles at the water side of the cofferdam and the filling soil; used for preventing water from infiltrating outside the cofferdam.
(5) Reinforcing the steel enclosing purlin and the pull rod: the steel encloses the purlin and chooses for use the 25a channel-section steel of shuangpin, and constructor has calculated steel and encloses purlin end opening position elevation, welds the steel corbel of shelving steel and enclosing the purlin on the steel-pipe pile lateral surface, and the steel corbel adopts 25mm reinforcing bar preparation, puts the 25a channel-section steel on the bracket after the welding. The pull rods are made of phi 32 round steel, and the spacing between the pull rods is designed. The steel pull rod is to be installed straight, and 2M 32 ordinary nuts are matched with a backing plate with the thickness of 160mm multiplied by 32mm to be gradually screwed.
(6) Filling soil in the weir core: the double-steel-pipe internal filling adopts an excavator to carry out earthwork backfilling, and the soil body is naturally compacted by the aid of a soil body during filling, so that the soil body cannot be compacted by large machinery, damage to round steel pull rods is prevented, and the safety of the cofferdam structure is influenced. The backfill soil can use cohesive soil excavated on site.
(7) And (3) filling the breakwater: the bagged clay is sequentially placed on the waterside side of the top of the cofferdam, a concrete pavement is poured on the top of the cofferdam, the leakage of the cofferdam is reduced as much as possible, and the people can walk conveniently.
The steel pipe pile cofferdam of the embodiment can provide lateral restraint for filling soil in the cofferdam core, avoid the use of slope relief and reduce the floor area of the cofferdam; the top sets up the clay breakwater in bags and can prevent that the wave from crossing the cofferdam, gets into the construction place, consequently can reduce the cofferdam height, strengthens cofferdam stability, reduces engineering cost.
Claims (3)
1. The double-row steel pipe pile cofferdam for the bagged clay breakwater is piled and filled at the top of the cofferdam and comprises steel pipe piles, geotextile, a waterproof membrane, a steel purlin, round steel pull rods and bagged clay, and is characterized in that the number of the steel pipe piles is two, the lower ends of the steel pipe piles are inserted into a riverbed and are distributed at equal intervals; the steel pipe piles at the waterside are connected by using a lock catch, and the lock catch is not used at the backwater side; the geotextile is positioned inside the cofferdam steel pipe pile; the waterproof membrane is positioned between the steel pipe pile on the water side of the cofferdam and the filling soil; the steel purlin is positioned on the outer side of the steel pipe pile of the cofferdam and is connected with the round steel pull rod into a whole; the clay in bags is located at the top of the steel pipe pile cofferdam, and the section of the clay in bags is trapezoidal.
2. The double-row steel pipe pile cofferdam for the clay breakwater packed in bags at the top of the cofferdam as recited in claim 1, wherein the distance between the two rows of steel pipe piles is B, 4m < B <6 m.
3. The double-row steel pipe pile cofferdam of the clay breakwater packed in bags at the top of the cofferdam as recited in claim 1, wherein the steel purlin and the round steel tie bar are located 0.8m below the top of the steel pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122565791.0U CN216238598U (en) | 2021-10-25 | 2021-10-25 | Double-row steel pipe pile cofferdam for bagged clay breakwater at top of cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122565791.0U CN216238598U (en) | 2021-10-25 | 2021-10-25 | Double-row steel pipe pile cofferdam for bagged clay breakwater at top of cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216238598U true CN216238598U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122565791.0U Expired - Fee Related CN216238598U (en) | 2021-10-25 | 2021-10-25 | Double-row steel pipe pile cofferdam for bagged clay breakwater at top of cofferdam |
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| CN (1) | CN216238598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387365A (en) * | 2022-08-08 | 2022-11-25 | 南京市水利建筑工程有限公司 | Low-water-head cofferdam construction method based on soil and stone deficient area |
| CN116446381A (en) * | 2023-06-16 | 2023-07-18 | 中建铁投轨道交通建设有限公司 | Waterproof latch assembly of steel pipe pile |
-
2021
- 2021-10-25 CN CN202122565791.0U patent/CN216238598U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387365A (en) * | 2022-08-08 | 2022-11-25 | 南京市水利建筑工程有限公司 | Low-water-head cofferdam construction method based on soil and stone deficient area |
| CN115387365B (en) * | 2022-08-08 | 2023-11-28 | 南京市水利建筑工程有限公司 | Low-water-head cofferdam construction method based on soil and stone deficient area |
| CN116446381A (en) * | 2023-06-16 | 2023-07-18 | 中建铁投轨道交通建设有限公司 | Waterproof latch assembly of steel pipe pile |
| CN116446381B (en) * | 2023-06-16 | 2023-09-05 | 中建铁投轨道交通建设有限公司 | Waterproof latch assembly of steel pipe pile |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |