CN211898475U - Double steel-pipe pile cofferdam - Google Patents
Double steel-pipe pile cofferdam Download PDFInfo
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- CN211898475U CN211898475U CN202020219147.0U CN202020219147U CN211898475U CN 211898475 U CN211898475 U CN 211898475U CN 202020219147 U CN202020219147 U CN 202020219147U CN 211898475 U CN211898475 U CN 211898475U
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Abstract
The utility model discloses a double steel-pipe pile cofferdam, including outside steel-pipe pile and inboard steel-pipe pile, outside steel-pipe pile and inboard steel-pipe pile position corresponding steel-pipe pile between through opposite pull rod fixed connection, be equipped with locking device respectively at the both ends of opposite pull rod, through opposite pull rod and locking device with outside steel-pipe pile and inboard steel-pipe pile drawknot one-tenth a whole, backfill clay between outside steel-pipe pile and inboard steel-pipe pile. The utility model discloses a to pull rod and locking device outside steel-pipe pile and inboard steel-pipe pile drawknot become a whole, the fastness is better, and locking device's design makes cofferdam simple to operate, and the hasp formula steel pipe increases the fastness between the same row of steel-pipe pile, and designs four kinds of different hasp formula steel pipes, can connect into different shapes, realizes the segmentation design of cofferdam, adapts to different topography; the waterproof effect is good, and stability is stronger.
Description
Technical Field
The utility model relates to a hydraulic engineering technical field especially relates to a double steel-pipe pile cofferdam.
Background
Hydraulic engineering buildings can not be boiled off, and multi-hydraulic engineering buildings are built in water or on the bank side, in order to create conditions for dry land construction, a construction cofferdam needs to be built, and the conventional construction cofferdam comprises: earth rock cofferdam, steel sheet pile cofferdam, steel pipe pile cofferdam and the like. However, some projects are affected by fields, soil sampling sources, geology, soil permeability coefficients, water level changes and the like, and the cofferdams above cannot meet special construction requirements, so that the cofferdams are comprehensively applied to meet specific construction requirements.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is exactly in order to compensate prior art's defect, provides a double steel-pipe pile cofferdam.
The utility model discloses a realize through following technical scheme:
the utility model provides a double steel-pipe pile cofferdam, is including outside steel-pipe pile and inboard steel-pipe pile, outside steel-pipe pile and inboard steel-pipe pile position corresponding steel-pipe pile between through drag link fixed connection, be equipped with locking device respectively at the both ends of drag link, through drag link and locking device with outside steel-pipe pile and inboard steel-pipe pile drawknot one-tenth a whole, backfill clay between outside steel-pipe pile and inboard steel-pipe pile.
The locking device comprises a channel steel purlin and a bolt, wherein the channel steel purlin and the bolt are sleeved at the end part of the opposite pull rod, a cushion plate is arranged between the channel steel purlin and the bolt, and a bracket beam is fixed between the channel steel purlin and the steel pipe pile.
The counter-pull rod is located at the position 1m below the pile top.
The steel pipe diameter of outside steel-pipe pile be greater than the steel pipe diameter of inboard steel-pipe pile, outside steel-pipe pile adopts hasp formula steel pipe interconnect to constitute.
The lock catch type steel pipe is characterized in that a small steel pipe and a 270-degree arc retaining ring are vertically welded on the outer side surface of the steel pipe, the inner diameter of the retaining ring is equal to the outer diameter of the small steel pipe, and the retaining ring of one lock catch type steel pipe is sleeved on the outer side of the small steel pipe of the adjacent lock catch type steel pipe to realize the connection of the two adjacent lock catch type steel pipes.
The lock catch type steel pipes are four, the first type is that the small steel pipe and the retaining ring are arranged on opposite surfaces, and the centers of the small steel pipe and the retaining ring and the center of the steel pipe in which the small steel pipe and the retaining ring are arranged are on the same straight line; the second is that the small steel tube is not in the same straight line with the center of the retaining ring and the center of the steel tube in which the small steel tube is positioned; the third is that two small steel pipes and a retaining ring are welded outside one steel pipe, and the three form a T shape; and the fourth method is that a small steel pipe and two retaining rings are welded outside one steel pipe to form a T shape.
The outer side surface of the outer steel pipe pile is surrounded with the colored cloth strips, the lower ends of the colored cloth strips and the outer steel pipe pile are sunk into a riverbed and are tightly pressed by a sand bag, and the colored cloth strips can be tightly attached to the steel pipe pile by water pressure during tide rising so as to play a certain waterproof role; and a concrete access road is arranged at the top of the backfilled clay between the outer steel pipe pile and the inner steel pipe pile, so that cofferdam inspection is facilitated.
And clay is backfilled after the inner side surface of the outer steel pipe pile is surrounded by the geomembrane.
And the inner side of the inner steel pipe pile is sequentially surrounded with a high-strength geogrid and geotextile.
The utility model has the advantages that: the utility model discloses a to pull rod and locking device outside steel-pipe pile and inboard steel-pipe pile drawknot become a whole, the fastness is better, and locking device's design makes cofferdam simple to operate, and the hasp formula steel pipe increases the fastness between the same row of steel-pipe pile, and designs four kinds of different hasp formula steel pipes, can connect into different shapes, realizes the segmentation design of cofferdam, adapts to different topography; the waterproof effect is good, and stability is stronger.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a connection structure diagram of the outer steel-pipe pile and the inner steel-pipe pile.
Fig. 3 is a structural view of the locking device.
Fig. 4 is a sectional view of the actual installation structure of the present invention.
Fig. 5 is a schematic view of a first lock catch type steel pipe structure.
Fig. 6 is a schematic view of a second lock catch type steel pipe structure.
Fig. 7 is a schematic view of a third lock-type steel pipe structure.
Fig. 8 is a structural schematic view of a fourth middle locking type steel pipe.
Fig. 9 shows a cofferdam portion of a first shape.
Fig. 10 shows a cofferdam portion of a second shape.
Fig. 11 shows a cofferdam portion of a third shape.
Detailed Description
As shown in fig. 1, 2 and 4, the double-row steel pipe pile cofferdam comprises an outer steel pipe pile 1 and an inner steel pipe pile 2, the outer steel pipe pile 1 and the inner steel pipe pile 2 are fixedly connected through a tie rod 3, locking devices 4 are respectively arranged at two ends of the tie rod 3, the outer steel pipe pile 1 and the inner steel pipe pile 2 are drawn into a whole through the tie rod 3 and the locking devices 4, and clay 5 is filled between the outer steel pipe pile 1 and the inner steel pipe pile 2.
As shown in fig. 3, the locking device 4 comprises a channel steel purlin 6 and a bolt 7 which are sleeved at the end of the opposite pull rod 3, a backing plate 8 is further arranged between the channel steel purlin 6 and the bolt 7, and a bracket beam 9 is fixed between the channel steel purlin 6 and the steel pipe pile.
The counter-pull rod 3 is positioned 1m below the pile top.
A plurality of opposite pull rods can be connected between the two corresponding steel pipes from top to bottom.
The diameter of the steel pipe of the outer side steel pipe pile 1 is larger than that of the steel pipe of the inner side steel pipe pile 2, and the outer side steel pipe pile 1 is formed by mutually connecting lock catch type steel pipes.
The lock catch type steel pipe is characterized in that a small steel pipe 10 and a 270-degree arc retaining ring 11 are vertically welded on the outer side surface of the steel pipe, the inner diameter of the retaining ring 11 is equal to the outer diameter of the small steel pipe 10, and the retaining ring of one lock catch type steel pipe is sleeved on the outer side of the small steel pipe of the adjacent lock catch type steel pipe to realize the connection of the two adjacent lock catch type steel pipes.
As shown in fig. 5, 6, 7 and 8, there are four kinds of lock catch type steel pipes, the first kind is that the small steel pipe and the snap ring are on opposite surfaces, and the centers of the small steel pipe, the snap ring and the steel pipe in which the small steel pipe and the snap ring are located are on the same straight line; the second is that the small steel tube is not in the same straight line with the center of the retaining ring and the center of the steel tube in which the small steel tube is positioned; the third is that two small steel pipes and a retaining ring are welded outside one steel pipe, and the three form a T shape; and the fourth method is that a small steel pipe and two retaining rings are welded outside one steel pipe to form a T shape. The first lock catch type steel pipe is suitable for connecting steel pipe piles in the same straight line, the second lock catch type steel pipe is suitable for being used in a corner, and the third lock catch type steel pipe and the fourth lock catch type steel pipe are suitable for being used in a place with a branch part. Four different lock catch type steel pipes are adopted to be connected into different shapes, such as partial cofferdams with different shapes shown in figures 9-11.
The outer side surface of the outer steel pipe pile is surrounded with the colored cloth strips, the lower ends of the colored cloth strips and the outer steel pipe pile are sunk into a riverbed and are tightly pressed by a sand bag, and the colored cloth strips can be tightly attached to the steel pipe pile by water pressure during tide rising so as to play a certain waterproof role; and a concrete access road 12 is arranged at the top of the backfilled clay between the outer steel pipe pile and the inner steel pipe pile, so that cofferdam inspection is facilitated.
And clay is backfilled after the inner side surface of the outer steel pipe pile 1 is surrounded by the geomembrane 14.
And a high-strength geogrid 15 and geotextile 16 are sequentially surrounded on the inner side of the inner side steel pipe pile 2.
And a high-pressure jet grouting pile 17 can be arranged on the outer sides of the outer steel pipe pile and the inner steel pipe pile.
The construction process comprises the following steps: construction measurement, driving steel piles by a press-mounting machine, installing a counter-pull rod and a locking device, dredging in a cofferdam, enclosing a geomembrane on the inner side surface of an outer steel pipe pile, enclosing a high-strength geogrid and geotextile on the inner side of the inner steel pipe pile in sequence, backfilling clay, enclosing a colored cloth strip on the outer side surface of the outer steel pipe pile, sinking the lower end of the colored cloth strip into a riverbed together with the outer steel pile, and pressing and pouring a concrete sidewalk by a sand bag.
Claims (9)
1. The utility model provides a double steel-pipe pile cofferdam which characterized in that: the steel pipe pile comprises an outer steel pipe pile and an inner steel pipe pile, the outer steel pipe pile and the inner steel pipe pile are fixedly connected through a tie rod, locking devices are arranged at two ends of the tie rod respectively, the outer steel pipe pile and the inner steel pipe pile are drawn into a whole through the tie rod and the locking devices, and clay is backfilled between the outer steel pipe pile and the inner steel pipe pile.
2. The double-row steel pipe pile cofferdam of claim 1, wherein: the locking device comprises a channel steel purlin and a bolt, wherein the channel steel purlin and the bolt are sleeved at the end part of the opposite pull rod, a cushion plate is arranged between the channel steel purlin and the bolt, and a bracket beam is fixed between the channel steel purlin and the steel pipe pile.
3. The double-row steel pipe pile cofferdam of claim 2, wherein: the counter-pull rod is located at the position 1m below the pile top.
4. The double-row steel pipe pile cofferdam of claim 1, wherein: the steel pipe diameter of outside steel-pipe pile be greater than the steel pipe diameter of inboard steel-pipe pile, outside steel-pipe pile adopts hasp formula steel pipe interconnect to constitute.
5. The double-row steel pipe pile cofferdam of claim 4, wherein: the lock catch type steel pipe is characterized in that a small steel pipe and a 270-degree arc retaining ring are vertically welded on the outer side surface of the steel pipe, the inner diameter of the retaining ring is equal to the outer diameter of the small steel pipe, and the retaining ring of one lock catch type steel pipe is sleeved on the outer side of the small steel pipe of the adjacent lock catch type steel pipe to realize the connection of the two adjacent lock catch type steel pipes.
6. The double-row steel pipe pile cofferdam of claim 5, wherein: the lock catch type steel pipes are four, the first type is that the small steel pipe and the retaining ring are arranged on opposite surfaces, and the centers of the small steel pipe and the retaining ring and the center of the steel pipe in which the small steel pipe and the retaining ring are arranged are on the same straight line; the second is that the small steel tube is not in the same straight line with the center of the retaining ring and the center of the steel tube in which the small steel tube is positioned; the third is that two small steel pipes and a retaining ring are welded outside one steel pipe, and the three form a T shape; and the fourth method is that a small steel pipe and two retaining rings are welded outside one steel pipe to form a T shape.
7. The double-row steel pipe pile cofferdam of claim 1, wherein: the outer side surface of the outer steel pipe pile is surrounded with colored cloth strips, and the lower ends of the colored cloth strips and the outer steel pipe pile are sunk into a riverbed together and are compressed by sand bags; and a concrete access road is arranged at the top of the backfilled clay between the outer steel pipe pile and the inner steel pipe pile.
8. The double-row steel pipe pile cofferdam of claim 1, wherein: and clay is backfilled after the inner side surface of the outer steel pipe pile is surrounded by the geomembrane.
9. The double-row steel pipe pile cofferdam of claim 1, wherein: and the inner side of the inner steel pipe pile is sequentially surrounded with a high-strength geogrid and geotextile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020219147.0U CN211898475U (en) | 2020-02-27 | 2020-02-27 | Double steel-pipe pile cofferdam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020219147.0U CN211898475U (en) | 2020-02-27 | 2020-02-27 | Double steel-pipe pile cofferdam |
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| CN211898475U true CN211898475U (en) | 2020-11-10 |
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| CN202020219147.0U Active CN211898475U (en) | 2020-02-27 | 2020-02-27 | Double steel-pipe pile cofferdam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411782A (en) * | 2022-01-17 | 2022-04-29 | 中铁十四局集团第二工程有限公司 | Waterproof construction method for PC (polycarbonate) combined pile enclosure structure |
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2020
- 2020-02-27 CN CN202020219147.0U patent/CN211898475U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411782A (en) * | 2022-01-17 | 2022-04-29 | 中铁十四局集团第二工程有限公司 | Waterproof construction method for PC (polycarbonate) combined pile enclosure structure |
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