CN114855841B - Composite cofferdam structure of steel pipe pile and steel sheet pile of bearing platform in complex water area - Google Patents
Composite cofferdam structure of steel pipe pile and steel sheet pile of bearing platform in complex water area Download PDFInfo
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- CN114855841B CN114855841B CN202210675457.7A CN202210675457A CN114855841B CN 114855841 B CN114855841 B CN 114855841B CN 202210675457 A CN202210675457 A CN 202210675457A CN 114855841 B CN114855841 B CN 114855841B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
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Abstract
The invention discloses a steel pipe pile and steel sheet pile combined cofferdam structure of a bearing platform in a complex water area, which belongs to the technical field of building construction and comprises a plurality of steel sheet piles in rectangular connection distribution, wherein steel pipe columns are fixedly connected between adjacent steel sheet columns, a coaxial cavity is arranged in the upper part of each steel pipe column, and a coaxial connecting shaft is connected in the cavity in a sliding manner along the axial direction of the cavity; the side wall of the connecting shaft is provided with a plurality of inclined grooves which are uniformly distributed along the axial direction of the connecting shaft; a hydraulic buffer device is arranged between the end part of the connecting shaft and the cavity; the periphery of the steel pipe column is provided with a plurality of arc-shaped grooves communicated with the cavity, connecting seats are slidably connected in the arc-shaped grooves, transmission rods are fixedly arranged on the inner walls of the connecting seats, and extend into the cavity through corresponding through grooves and are slidably connected with corresponding grooves; a spoiler is arranged on one side of each steel plate column, and one side of each spoiler is connected with a connecting seat on the corresponding steel pipe column; the invention aims to solve the problem that the steel plate column is easy to deform when the existing cofferdam is washed by the water flow.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a composite cofferdam structure of steel pipe piles and steel sheet piles of bearing platforms in complex water areas.
Background
The steel pipe pile and steel sheet pile combined cofferdam is a common sheet pile cofferdam, and in the construction process of a bearing platform of a bridge, the cofferdam is used as a temporary enclosing structure to prevent water, soil and the like from entering the building position of a building, so that the building of the bearing platform building is prevented from being influenced.
In the construction process, the peripheral side of the cofferdam is continuously washed by water flow, and the steel sheet piles are used as main bearing carriers, so that deformation is easy to occur in the washing process, the sealing effect of the cofferdam is reduced, water and soil are easy to flow into a construction site, and the normal operation of construction is influenced.
Disclosure of Invention
In view of the above, the invention discloses a composite cofferdam structure of steel pipe piles and steel sheet piles of bearing platforms in complex water areas, which aims to solve the problem that the steel sheet piles are easy to deform due to the scouring of the current water flow of the cofferdam.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a complex waters cushion cap steel-pipe pile and steel sheet pile combination cofferdam structure, includes a plurality of steel sheet piles that are rectangle connection distribution, fixedly connected with steel-pipe pile between the adjacent steel sheet pile, be provided with coaxial cavity in the steel-pipe pile upper portion, be connected with coaxial connecting axle along its axial sliding in the cavity; the side wall of the connecting shaft is provided with a plurality of inclined grooves which are uniformly distributed along the axial direction of the connecting shaft; a hydraulic buffer device is arranged between the end part of the connecting shaft and the cavity; the periphery of the steel pipe pile is provided with a plurality of arc grooves communicated with the cavity, connecting seats are slidably connected in the arc grooves, transmission rods are fixedly arranged on the inner walls of the connecting seats, and extend into the cavity through corresponding through grooves and are slidably connected with corresponding grooves; and one side of each steel sheet pile is provided with a spoiler, and one side of each spoiler is connected with a connecting seat on the corresponding steel pipe pile.
In this scheme, rivers wash the cofferdam can earlier with the spoiler contact when leading to the spoiler to take place reciprocating deflection to drive the connecting seat and slide in the arc wall, and drive the transfer line and remove in the recess when the connecting seat slides, because the connecting axle is along cavity axial sliding connection, make the connecting axle only can follow its axial direction slip and can not rotate relatively, therefore make the connecting axle remove along its axial direction through the cooperation of transfer line and recess, utilize hydraulic buffer equipment to consume the kinetic energy of rivers at this moment, reduce the effort that rivers washed on the steel sheet pile, reduce the damage of rivers washed to the steel sheet pile.
In addition, through the cooperation of transfer line and guide slot, convert the kinetic energy of rivers into the kinetic energy of connecting axle vertical movement, the majority kinetic energy consumes energy along steel-pipe pile vertical direction promptly, makes the steel-pipe pile receive vertical kinetic energy influence more, can effectively avoid the steel-pipe pile to receive the rivers to erode and incline, prevents that the cofferdam warp.
Further, the guide wheel is a gear, and a toothed plate meshed with the gear is vertically fixed on one side wall of the chute; the connecting seat is characterized in that connecting holes are horizontally formed in the side walls of the connecting seats, the connecting rods are connected with the connecting holes in a sliding and rotating mode, a reset spring is rotationally arranged between each connecting rod and each connecting hole, the guide wheels are fixed on the corresponding connecting rods, coaxial annular grooves are formed in the peripheral sides of the connecting rods, a plurality of clamping grooves facing away from the steel pipe piles are formed in the side walls of the annular grooves, and a plurality of clamping plates extending into the corresponding clamping grooves are fixed on the inner walls of the connecting holes; and arc-shaped bulges propped against the spoiler are fixed on one end of the arc-shaped groove close to the steel sheet pile up and down.
In the scheme, the upper end of the spoiler is always kept above the water surface by using the floating air bag, so that water flow with larger kinetic energy can be ensured to contact the spoiler, a subsequent energy consumption flow is carried out, and the influence of water flow scouring on the steel sheet pile is reduced; simultaneously, make all connecting seats slide synchronously by utilizing branch for when the spoiler floats from top to bottom, all can have partial leading wheel to be located the spout, thereby make the spoiler can drive the connecting seat and slide.
Further, the guide wheel is a gear, and a toothed plate meshed with the gear is vertically fixed on one side wall of the chute; the side walls of the connecting seats are horizontally provided with connecting holes, connecting rods are connected in the connecting holes in a sliding way, a reset spring is fixed between the connecting rods and the connecting holes, the guide wheels are fixed on the corresponding connecting rods, the circumference of the connecting rod is provided with a coaxial annular groove, the side wall of the annular groove is provided with a plurality of clamping plates which extend into corresponding clamping grooves; and arc-shaped bulges propped against the spoiler are fixed on one end of the arc-shaped groove close to the steel sheet pile up and down.
In the deflection process of the spoiler, when the spoiler does not deflect to the limit position, the connecting seat is positioned in the middle area of the arc-shaped groove, and the clamping plate is positioned in the clamping groove, so that the connecting rod can only move along the axial direction of the connecting rod and cannot rotate, and the guide wheel is fixed relative to the toothed plate, so that the spoiler cannot float, the phenomenon that the spoiler continuously floats due to continuous fluctuation of the water surface in the water flow scouring process, the contact between the spoiler and the water flow at the water surface is influenced, and the kinetic energy of the water flow cannot be effectively consumed is avoided; when the spoiler deflects to extreme position, the arc-shaped bulge promotes the spoiler to drive the connecting rod to move towards the direction of keeping away from the connecting seat, and the cardboard of this moment is by draw-in groove slip in the ring channel, makes the connecting rod can take place to rotate, and the leading wheel of this moment then can rotate relative pinion rack, makes the spoiler can float along with the water level fluctuation, and the rivers of this moment are after the power consumption, and the surface of water is comparatively calm relatively, ensures that the spoiler can be in reasonable position, and the guarantee spoiler can be with the biggest rivers contact of kinetic energy.
Further, the hydraulic buffer device is a hydraulic damper, one end of the hydraulic damper is fixedly connected with the end part of the cavity, and the other end of the hydraulic damper is rotatably connected with the connecting shaft.
Further, the same reset springs are arranged between the connecting seat and the arc-shaped groove.
Further, the steel sheet pile comprises a rectangular inner support frame, wherein the inner support frame is fixedly connected with the inner wall of the steel sheet pile, and inclined struts are further fixed at corners of the inner support frame.
Further, a sealing block for sealing the arc-shaped groove is fixed on the transmission rod.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
fig. 3 is a longitudinal cross-sectional view of a steel pipe pile according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view at B in the drawing;
fig. 5 is a schematic structural view of a connecting shaft according to an embodiment of the present invention.
The figures are marked as follows: steel sheet pile 1, steel-pipe pile 2, connecting axle 3, recess 4, arc wall 5, connecting seat 6, guide way 7, guide block 8, transfer line 9, spoiler 10, spout 11, leading wheel 12, float gasbag 13, pinion rack 14, connecting hole 15, connecting rod 16, reset spring 17, ring channel 18, draw-in groove 19, cardboard 20, arc protruding 21, hydraulic damper 22, inner support frame 23, bracing 24, branch 25, closing piece 26.
Detailed Description
As shown in fig. 1 to 5:
the utility model provides a complex waters cushion cap steel-pipe pile and steel sheet pile combination cofferdam structure, includes a plurality of steel sheet piles that are rectangle connection distribution, fixedly connected with steel-pipe pile 2 between the adjacent steel sheet pile 1, be provided with coaxial cavity in the steel-pipe pile 2 upper portion, be connected with coaxial connecting axle 3 along its axial sliding in the cavity; a plurality of inclined grooves 4 are formed in the side wall of the connecting shaft 3, and the grooves 4 are uniformly distributed along the axial direction of the connecting shaft 3; a hydraulic buffer device is arranged between the end part of the connecting shaft 3 and the cavity; a plurality of arc-shaped grooves 5 communicated with the cavity are formed in the periphery of the steel pipe pile 2, connecting seats 6 are slidably connected in the arc-shaped grooves 5, arc-shaped guide grooves 7 are formed in the upper wall and the lower wall of the arc-shaped grooves 5, and guide blocks 8 slidably connected with the guide grooves 7 are fixedly arranged at the upper end and the lower end of the connecting seats 6; the inner walls of the connecting seats 6 are respectively fixed with a transmission rod 9, and the transmission rods 9 extend into the cavities through corresponding through grooves and are in sliding connection with the corresponding grooves 4; the steel sheet pile 1 one side all is provided with spoiler 10, the connecting seat 6 on the corresponding steel-pipe pile 2 is connected to one side of spoiler 10.
In this scheme, rivers wash the cofferdam can earlier with spoiler 10 contact, lead to spoiler 10 to take place reciprocating deflection, thereby drive connecting seat 6 and slide in arc groove 5, and drive transfer line 9 and remove in recess 4 when connecting seat 6 is gliding, because connecting axle 3 along cavity axial sliding connection, make connecting axle 3 only can slide and can not relative rotation along its axial direction, therefore make connecting axle 3 along its axial direction through the cooperation of transfer line 9 and recess 4, utilize hydraulic buffer device to consume the energy of rivers at this moment, reduce the effort that rivers wash on steel sheet pile 1, reduce the damage of rivers wash to steel sheet pile 1.
In addition, through the cooperation of transfer line 9 and guide slot, convert the kinetic energy of rivers into the kinetic energy of connecting axle 3 vertical movement, the majority kinetic energy consumes energy along steel-pipe pile 2 vertical direction promptly, makes steel-pipe pile 2 receive vertical kinetic energy influence more, can effectively avoid steel-pipe pile 2 to receive rivers to wash and incline, prevents cofferdam deformation.
In this embodiment, the guide wheel 12 is a gear, and a toothed plate 14 meshed with the gear is vertically fixed on one side wall of the chute 11; the side walls of the connecting seat 6 are horizontally provided with connecting holes 15, the connecting rods 16 are connected with the connecting holes 15 in a sliding and rotating mode, return springs 17 are arranged between the connecting rods 16 and the connecting holes 15 in a rotating mode, the guide wheels 12 are fixed on the corresponding connecting rods 16, the circumference sides of the connecting rods 16 are provided with coaxial annular grooves 18, the side walls of the annular grooves 18 are provided with a plurality of clamping grooves 19 which face away from the steel pipe piles 2, and a plurality of clamping plates 20 which extend into the corresponding clamping grooves 19 are fixed on the inner walls of the connecting holes 15; an arc-shaped bulge 21 which is propped against the spoiler 10 is fixed on one end of the arc-shaped groove 5, which is close to the steel sheet pile 1, up and down.
In the scheme, the upper end of the spoiler 10 is always kept above the water surface by using the floating air bags 13, so that water flow with larger kinetic energy can be ensured to be in contact with the spoiler 10, the subsequent energy consumption flow is carried out, and the influence of water flow scouring on the steel sheet pile 1 is reduced; simultaneously, all the connecting seats 6 slide synchronously by utilizing the supporting rods 25, so that when the spoiler 10 floats up and down, part of the guide wheels 12 can be positioned in the sliding groove 11, and the spoiler 10 can drive the connecting seats 6 to slide.
In this embodiment, the guide wheel 12 is a gear, and a toothed plate 14 meshed with the gear is vertically fixed on one side wall of the chute 11; the side walls of the connecting seat 6 are horizontally provided with connecting holes 15, connecting rods 16 are slidably connected in the connecting holes 15, return springs 17 are fixed between the connecting rods 16 and the connecting holes 15, the guide wheels 12 are fixed on the corresponding connecting rods 16, the circumference sides of the connecting rods 16 are provided with coaxial annular grooves 18, the side walls of the annular grooves 18 are provided with a plurality of clamping plates 20 which extend into corresponding clamping grooves 19, and the inner walls of the connecting holes 15 are fixedly provided with a plurality of clamping plates 20; an arc-shaped bulge 21 which is propped against the spoiler 10 is fixed on one end of the arc-shaped groove 5, which is close to the steel sheet pile 1, up and down.
In the deflection process of the spoiler 10, when the spoiler 10 is not deflected to the limit position, the connecting seat 6 is positioned in the middle area of the arc-shaped groove 5, the clamping plate 20 is positioned in the clamping groove 19, so that the connecting rod 16 can only move along the axial direction and can not rotate, the guide wheel 12 is fixed relative to the toothed plate 14, the spoiler 10 can not float, the phenomenon that the spoiler 10 continuously floats due to continuous fluctuation of the water surface in the water flow scouring process, the contact between the spoiler 10 and the water flow on the water surface is influenced, and the kinetic energy of the water flow can not be effectively consumed is avoided; when the spoiler 10 deflects to the extreme position, the arc-shaped bulge 21 pushes the spoiler 10 to drive the connecting rod 16 to move towards the direction away from the connecting seat 6, and the clamping plate 20 at the moment slides into the annular groove 18 from the clamping groove 19, so that the connecting rod 16 can rotate, the guide wheel 12 at the moment can rotate relative to the toothed plate 14, the spoiler can float along with fluctuation of the water level, after the water flow at the moment passes through energy consumption, the water surface is relatively calm, the spoiler 10 is ensured to be in a reasonable position, and the spoiler 10 is ensured to be in contact with the water flow with the maximum kinetic energy.
In this embodiment, the hydraulic buffer device is a hydraulic damper 22, one end of the hydraulic damper 22 is fixedly connected with the end of the cavity, and the other end of the hydraulic damper 22 is rotatably connected with the connecting shaft 3.
In this embodiment, the same return springs 17 are disposed between the connection seat 6 and the arc-shaped groove 5; the connecting seat 6 can be reversely pushed to reset while auxiliary energy consumption is carried out through the reset spring 17.
In this embodiment, the steel sheet pile comprises a steel sheet pile 1, an inner supporting frame 23, and diagonal braces 24, wherein the inner supporting frame 23 is fixedly connected with the inner wall of the steel sheet pile 1, and the diagonal braces 24 are further fixed at corners of the inner supporting frame 23.
The steel sheet pile 1 is supported by the inner support frame 23, and the steel sheet pile 1 is further prevented from being deformed inward.
In this embodiment, a sealing block 26 for sealing the arc-shaped groove 5 is fixed on the transmission rod 9; the arc-shaped groove 5 is sealed by the sealing plate, so that water is prevented from entering the cavity, and the connecting shaft 3 and the hydraulic energy consumption equipment are prevented from being corroded.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. A complex waters cushion cap steel-pipe pile and steel sheet pile combination cofferdam structure, its characterized in that: the steel pipe pile comprises a plurality of steel sheet piles which are in rectangular connection and distribution, wherein steel pipe piles are fixedly connected between adjacent steel sheet piles, a coaxial cavity is formed in the upper part of each steel pipe pile, and a coaxial connecting shaft is axially and slidably connected in each cavity; the side wall of the connecting shaft is provided with a plurality of inclined grooves which are uniformly distributed along the axial direction of the connecting shaft; a hydraulic buffer device is arranged between the end part of the connecting shaft and the cavity; the periphery of the steel pipe pile is provided with a plurality of arc grooves communicated with the cavity, connecting seats are slidably connected in the arc grooves, transmission rods are fixedly arranged on the inner walls of the connecting seats, and extend into the cavity through corresponding through grooves and are slidably connected with corresponding grooves; a spoiler is arranged on one side of each steel sheet pile, and one side of each spoiler is connected with a connecting seat on the corresponding steel pipe pile; the side walls of the spoilers are vertically provided with sliding grooves, the cross sections of the sliding grooves are T-shaped, the side walls of the connecting seats are provided with connecting rods, supporting rods are fixed between adjacent connecting rods, and the supporting rods are positioned in the sliding grooves; the connecting rods are connected with guide wheels, and part of the guide wheels are in rolling contact in the mounting groove; a floating air bag facing the steel sheet pile is fixed on the side wall of the spoiler; the guide wheel is a gear, and a toothed plate meshed with the gear is vertically fixed on one side wall of the chute; the connecting seat is characterized in that connecting holes are horizontally formed in the side walls of the connecting seats, the connecting rods are connected with the connecting holes in a sliding and rotating mode, a reset spring is rotationally arranged between each connecting rod and each connecting hole, the guide wheels are fixed on the corresponding connecting rods, coaxial annular grooves are formed in the peripheral sides of the connecting rods, a plurality of clamping grooves facing away from the steel pipe piles are formed in the side walls of the annular grooves, and a plurality of clamping plates extending into the corresponding clamping grooves are fixed on the inner walls of the connecting holes; and arc-shaped bulges propped against the spoiler are fixed on one end of the arc-shaped groove close to the steel sheet pile up and down.
2. The complex water area bearing platform steel pipe pile and steel sheet pile combined cofferdam structure as set forth in claim 1, wherein: the hydraulic buffer device is a hydraulic damper, one end of the hydraulic damper is fixedly connected with the end part of the cavity, and the other end of the hydraulic damper is rotationally connected with the connecting shaft.
3. The complex water area bearing platform steel pipe pile and steel sheet pile combined cofferdam structure as set forth in claim 2, wherein: the same reset springs are arranged between the connecting seat and the arc-shaped groove.
4. A complex water area cap steel pipe pile and steel sheet pile combined cofferdam structure as claimed in claim 3, wherein: the steel sheet pile comprises a steel sheet pile body, and is characterized by further comprising a rectangular inner support frame which is fixedly connected with the inner wall of the steel sheet pile, and diagonal braces are further fixed at corners of the inner support frame.
5. The complex water area bearing platform steel pipe pile and steel sheet pile combined cofferdam structure of claim 4, wherein: and a sealing block for sealing the arc-shaped groove is fixed on the transmission rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675457.7A CN114855841B (en) | 2022-06-15 | 2022-06-15 | Composite cofferdam structure of steel pipe pile and steel sheet pile of bearing platform in complex water area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675457.7A CN114855841B (en) | 2022-06-15 | 2022-06-15 | Composite cofferdam structure of steel pipe pile and steel sheet pile of bearing platform in complex water area |
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| Publication Number | Publication Date |
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| CN114855841A CN114855841A (en) | 2022-08-05 |
| CN114855841B true CN114855841B (en) | 2023-04-25 |
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| CN202210675457.7A Active CN114855841B (en) | 2022-06-15 | 2022-06-15 | Composite cofferdam structure of steel pipe pile and steel sheet pile of bearing platform in complex water area |
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| CN117488848B (en) * | 2024-01-03 | 2024-03-22 | 福建省漳州公路交通工程有限公司 | Bridge pier cofferdam device for bridge construction and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6812819B2 (en) * | 2017-02-09 | 2021-01-13 | 日本製鉄株式会社 | Foundation reinforcement structure, reinforcement foundation structure and foundation reinforcement method |
| CN207331720U (en) * | 2017-08-21 | 2018-05-08 | 武汉金炜建设工程有限公司 | A kind of cofferdam with Combined steel tube sheet pile |
| CN209779650U (en) * | 2018-12-24 | 2019-12-13 | 中国建筑第六工程局有限公司 | structure for improving stability of steel sheet pile cofferdam in scour area |
| CN212801407U (en) * | 2020-08-06 | 2021-03-26 | 中建万众建设有限公司 | River levee reinforced structure |
| CN113186986B (en) * | 2021-05-18 | 2022-11-22 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power single-pile foundation scouring protection device |
| CN113638307B (en) * | 2021-08-20 | 2023-03-21 | 四川省建筑科学研究院有限公司 | Energy-consuming anti-seismic pier |
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