CN115506307A - Coastal port protects end scour prevention structure - Google Patents

Coastal port protects end scour prevention structure Download PDF

Info

Publication number
CN115506307A
CN115506307A CN202211365287.9A CN202211365287A CN115506307A CN 115506307 A CN115506307 A CN 115506307A CN 202211365287 A CN202211365287 A CN 202211365287A CN 115506307 A CN115506307 A CN 115506307A
Authority
CN
China
Prior art keywords
protection
scouring
protection unit
vertical
horizontal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211365287.9A
Other languages
Chinese (zh)
Inventor
黄泰坤
季则舟
赵冬梅
李健
杨玉森
杨长义
王晓宇
武庆卫
杨亚先
李云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CCCC First Harbour Consultants Co Ltd
Original Assignee
CCCC First Harbour Consultants Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CCCC First Harbour Consultants Co Ltd filed Critical CCCC First Harbour Consultants Co Ltd
Priority to CN202211365287.9A priority Critical patent/CN115506307A/en
Publication of CN115506307A publication Critical patent/CN115506307A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/121—Devices for applying linings on banks or the water bottom
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)

Abstract

The invention provides a coastal port bottom protection anti-scouring structure which comprises a horizontal protection unit and a vertical protection unit positioned below the horizontal protection unit, wherein the vertical protection unit is inserted below a mud surface, the upper edge of the vertical protection unit is close to the mud surface, the vertical protection unit comprises a group of protection walls or a plurality of groups of protection walls arranged at intervals, the protection wall closest to the sea side divides the soil body of a coastal port into two areas, namely a reserved scouring area on one side of the protection wall facing the sea body and a stable area on one side of the protection wall facing away from the sea body. The horizontal protection and vertical protection combined anti-scouring structure has the advantages that the horizontal protection and vertical protection bidirectional protection concepts are adopted, scouring can be slowed down by a horizontal active protection system, scouring with a certain depth is allowed to occur by a vertical passive protection structure system, the main structure can be protected to be safe and stable, scouring repair frequency can be reduced, sea can be saved to the maximum extent, the structure is simple, implementation is convenient, and popularization is easy.

Description

Coastal port protects end scour prevention structure
Technical Field
The invention belongs to the field of hydraulic structures in coastal engineering and port engineering, and particularly relates to a coastal port bottom protecting anti-scouring structure.
Background
At present, the traditional scour protection sole protection structure mainly takes a unidirectional horizontal protection structure as a main part, namely, geotextile is laid on the original mud surface, and two pieces of stone inverted filter structures and sole protection block stones are covered on the geotextile. The length of the conventional horizontal protection structure is 5-15m in an unwashed sea area, the length of the conventional horizontal protection structure needs to be increased to 30-50m in the unwashed sea area, and more remarkably, the bottom protection range can be 200-300m at the breakwater embankment head, a large amount of sea area is occupied, and the conventional horizontal protection structure does not accord with the principles of sea saving and sea ecological utilization. In sea areas with severe scour, conventional horizontal safeguards are difficult to maintain. With the increasingly strict national requirements on the sea policy, the limitation of the conventional protection method in the sea area with serious scouring is more prominent, and the conventional protection method occupies the sea area and also takes materials.
Disclosure of Invention
The invention of the technical scheme is characterized in that a horizontal protection unit and a vertical protection unit are combined to protect the coastal soil body, wherein the horizontal protection unit can slow down the scouring, the vertical protection unit can realize the function of reserving the scouring depth, one of the functions of reserving the scouring depth is to ensure that the vertical protection unit can be fixed in the soil body, and an anti-scouring structure combining the horizontal protection and the vertical protection can reduce the used sea surface area in a large range, so that the anti-scouring structure is an effective anti-scouring structure actively responding to the domestic sea policy. And the combined anti-scouring structure has less demand on the raw materials of sand and stone, and is a preferred structural style under the current large situation of strictly controlling the sea policy.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a coastal port protects end scour prevention structure, includes horizontal protection unit, its characterized in that: still including being located horizontal protection unit below, vertical protection unit inserts below the mud face, vertical protection unit goes up along being close to the mud face, vertical protection unit includes the multiunit protective wall body that a set of protective wall body or interval set up, wherein is closest to the sea side protective wall body separates the soil body at coast harbour for two regions, do respectively on the protective wall body towards the reservation of sea body one side wash the region with the firm region of sea body one side dorsad on the protective wall body.
Optionally, the lower edge of the vertical protection unit is 5-30m away from the mud surface.
Optionally, the protective wall is formed by splicing a plurality of continuously arranged unit bodies.
Optionally, the unit bodies are connected and fixed into a whole through a connector.
Optionally, the connecting body is a guide beam, and the upper ends of the unit bodies are fixed on the guide beam.
Optionally, the groove of the guide beam is filled with sand and stone materials.
Optionally, the grit material is one or a combination of several of sand, two-piece stones or block stones.
Optionally, the unit bodies include steel sheet piles, pile rows, guide beams, and steel structures or reinforced concrete structures.
Optionally, the pile row is a steel pipe pile, a PHC pipe pile, a cast-in-place pile, a cement mixing pile, an underground continuous wall or a steel cylinder.
Optionally, the horizontal protection unit includes geotextile, and one or more combinations of stone blocks, sand rib soft rows and interlocking block soft rows are arranged on the geotextile.
Optionally, the protection length of the horizontal protection unit is 5-50m.
The invention has the advantages and positive effects that: the invention provides a bidirectional protection concept combining horizontal protection and vertical protection, the horizontal protection unit can slow down scouring, the vertical protection unit can allow scouring with a certain depth, and the scouring prevention structure combining horizontal protection and vertical protection can not only protect the main structure from being safe and stable, but also reduce the scouring and repairing frequency and save the sea to the maximum extent; the structure is simple, the implementation is convenient, and the popularization is easy.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the horizontal shielding unit of FIG. 1;
FIG. 3 is a schematic structural view of the vertical shielding unit of FIG. 1;
in the figure: 1-a horizontal guard unit; 1-1-geotextile inverted filter; 1-2 two stone cushion layers; 1-3 protecting bottom block stones; 2-a vertical protection unit; 2-1-steel sheet pile; 2-2-steel guide beam; 2-3-backfill; 3-mud surface.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected with each other or indirectly connected with each other through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in the figure, the invention provides a coastal port bottom protection anti-scouring structure, which comprises a horizontal protection unit 1 and a vertical protection unit 2, wherein the horizontal protection unit 1 consists of geotechnical cloth on which two stone cushion layers 1-2 and bottom protection block stones 1-3 are laid, the horizontal protection unit 1 is laid on a mud surface of a coastal port, the horizontal protection unit 1 comprises geotechnical cloth on which one or more combinations of block stones, sand rib soft rows and interlocking block soft rows are arranged to protect the mud surface in the horizontal direction, the vertical protection unit 2 can consist of one or more groups of protection walls arranged at intervals, the embodiment is described by taking an example of a group of protection walls, wherein the length range of the horizontal protection unit 1 is between 5 and 50m, the lower edge of the protection wall body extends into the position 5 to 30m below a mud surface 3, the protection wall body is formed by fixedly splicing a plurality of steel sheet piles, pile rows and guide beams, a steel structure or a reinforced concrete structure through the steel guide beams, the protection wall body is arranged in the mud surface 3 below the horizontal protection unit 1, one side of the protection wall body, which is over against a sea body, is a reserved scouring area, one of the functions of the reserved scouring area is to enable the protection wall body to be fixed in the mud surface 3, the width and the depth of the scouring area are determined according to theoretical calculation and simulation tests in the early stage,
the scouring protection depth formula is as follows:
Figure BDA0003923738650000041
in the formula, a 1 、a 1 The scouring coefficient is determined by tests, and can be 3.0 and 0.38 when no test data exists; u. of t 、u w Respectively shear flow velocity and wave bottom flow velocity caused by tide; u. u c* Starting the flow rate for the seabed sediment; d is the hydraulic influence radius of the structures such as the breakwater acted by the water flow.
The width of the scouring area is the distance from the coastline to the protective wall, the depth is the depth of the protective wall inserted into the soil body, the width and the depth of the scouring area are determined according to the fact that the protective wall can still be stably fixed in the soil body when the soil body in the scouring area is scoured to achieve dynamic balance, the depth of the soil body in the scouring area needs to be regularly detected when the protective wall is in practical use, and when the soil body in the scouring area reaches a dangerous value, namely the soil body in the scouring area is not enough to fix the protective wall in the soil body after being scoured, the protective structure needs to be repaired in time to avoid causing greater loss.
Guarantee that the protection wall physical stamina among the vertical protection unit 2 is stable in being fixed in the soil body, can guarantee that the protection wall body is in relatively stable state to the soil body of sea body one side dorsad, can not lead to the loss because of erodeing to can furthest guarantee the relative integrality of whole scour prevention structure, in time need repair at the part towards sea body one side, its repair area also can control in less within range.
The protective wall body in the embodiment can be formed by adopting a steel sheet pile 2-1 splicing structure, wherein the top of the steel sheet pile 2-1 is fixed on the steel guide beam 2-2, and sand and stone are filled in the groove of the steel guide beam 2-2 so as to enable the whole structure to be more stable.
The construction method of the protective structure comprises the following steps:
first, the vertical protection unit 2 is implemented: before construction, temporary guide piles and guide beams are required to be installed on site to match with steel sheet piles for positioning; the processed steel sheet piles are transported to the site by a barge and are driven on site by a pile driving barge or a barge operation ship group provided with pile driving equipment; when piling, a crane on an operation ship lifts a vibration hammer to insert and pile sheet piles one by one or in groups, and the steel sheet piles are vibrated and sunk to a designed elevation step by step; after the steel sheet pile is drilled, the steel guide beam 2-2 is installed underwater by the diving set, and a diver uses a high-pressure water gun to open a groove underwater before the steel guide beam 2-2 is installed, so that the pile top of the steel sheet pile is exposed for installation. After the steel guide beam 2-2 is installed, the groove is timely filled with sand and stone materials.
Next, the horizontal protection unit 1 is implemented: and (4) carrying the geotextile to the site by a barge after land manufacture, and paving by using a laying ship. The two stone cushions 1-2 and the bottom protection block stones 1-3 are thrown and filled on water by a barge or transported by the barge, and the ground manpower is matched with machinery to take low tide throwing.
The anti-scouring structure combining the horizontal protection and the vertical protection, which is implemented by the invention, can be widely applied to scouring protection of island walls, breakwaters, revetments or bank slopes of artificial islands. The horizontal protection unit 1 can slow down the scouring, and the vertical protection unit 2 can realize the function of reserving the scouring depth. The sunken dotted line in fig. 1 represents a seabed section line formed by the scouring of seawater, and it can be seen from the figure that even if a certain degree of scouring occurs until the silt scouring reaches balance, the stability of the scour prevention structure in the invention is still not influenced according to formula calculation and theoretical derivation, and the structure is proved to be more stable compared with the scour prevention structure in the prior art and has better resistance to the scouring of the scouring prevention structure, so that the scour prevention structure in the invention can stably and play a role in scour prevention for a protective bottom on a seashore port for a long time. Horizontal protection and vertical protection integrated configuration can reduce the quantity of grit material, reduce with the sea area, certain actual breakwater engineering, and this scheme of adoption has reduced the protection and has used the sea area about 8 ten thousand square meters, is an effectual scour prevention structure of positive response domestic sea policy.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. The utility model provides a coast harbour protects end scour prevention structure, includes horizontal protection unit, its characterized in that: still including being located horizontal protection unit below, vertical protection unit inserts below the mud face, vertical protection unit goes up along being close to the mud face, vertical protection unit includes the multiunit protection wall body that a set of protection wall body or interval set up, wherein is closest to the sea side protection wall body separates the soil body at coast harbour for two regions, do respectively on the protection wall body towards the reservation of sea body one side erode the region with the firm region of sea body one side dorsad on the protection wall body.
2. The coastal port bottom protecting anti-scouring structure of claim 1, which is characterized in that: the lower edge of the vertical protection unit is 5-30m away from the mud surface.
3. The coastal port bottom-protecting anti-scouring structure of claim 2, wherein: the protective wall body is formed by splicing a plurality of continuously arranged unit bodies.
4. The coastal port bottom protecting anti-scouring structure of claim 3, wherein: the unit bodies are connected and fixed into a whole through a connector.
5. The coastal port bottom-protecting anti-scouring structure of claim 4, wherein: the connecting body is a guide beam, and the upper ends of the unit bodies are fixed on the guide beam.
6. The coastal port bottom-protecting anti-scouring structure of claim 5, wherein: the groove of the guide beam is filled with sand and stone materials;
preferably, the sandstone material is one or a combination of sand, two-piece stone or block stone.
7. The coastal port bottom-protecting anti-scouring structure of claim 5, wherein: the guide beam is of a steel structure or a reinforced concrete structure.
8. The coastal port bottom-protecting anti-scouring structure according to any one of claims 1 to 7, characterized in that: the unit bodies comprise steel sheet piles, pile rows, guide beams and steel structures or reinforced concrete structures;
preferably, the pile row is a steel pipe pile, a PHC pipe pile, a cast-in-place pile, a cement mixing pile, an underground continuous wall or a steel cylinder.
9. The coastal port bottom protecting anti-scouring structure of claim 8, wherein: the horizontal protection unit comprises geotextile, and one or more combinations of block stones, sand rib soft rows and interlocking block soft rows are arranged on the geotextile.
10. The coastal port bottom-protecting anti-scouring structure of claim 9, wherein: the protection length of the horizontal protection unit is 5-50m.
CN202211365287.9A 2022-11-03 2022-11-03 Coastal port protects end scour prevention structure Pending CN115506307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211365287.9A CN115506307A (en) 2022-11-03 2022-11-03 Coastal port protects end scour prevention structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211365287.9A CN115506307A (en) 2022-11-03 2022-11-03 Coastal port protects end scour prevention structure

Publications (1)

Publication Number Publication Date
CN115506307A true CN115506307A (en) 2022-12-23

Family

ID=84512664

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211365287.9A Pending CN115506307A (en) 2022-11-03 2022-11-03 Coastal port protects end scour prevention structure

Country Status (1)

Country Link
CN (1) CN115506307A (en)

Similar Documents

Publication Publication Date Title
US4502816A (en) Shoreline breakwater
KR101169023B1 (en) Method for installing soil nailing and tunnel prevent hole for tidal plant
CN113006108B (en) Construction method of film bag sand cofferdam
CN113047215B (en) High stake pier structure of medium plate stake
Burcharth et al. Types and functions of coastal structures
CN113006144A (en) Permeable structure tunnel structure
CN209482246U (en) A kind of discharging type sheet pile sea wall structure
CN218779421U (en) Coastal port protects end scour prevention structure
CN203821306U (en) Flexible anti-scour protection pad
CN216041278U (en) Novel pile foundation scour prevention structure
CN115506307A (en) Coastal port protects end scour prevention structure
CN211815989U (en) Over-current type permeable breakwater structure
CN108867544A (en) One kind disappears shipping agency waves revetment structure and construction method
CN208685530U (en) One kind disappears shipping agency waves revetment structure
CN218116319U (en) Ecological cavity block body on slope top
AU2012392206A1 (en) A versatile erosion control system
CN109208534B (en) Pile foundation open type breakwater and construction method thereof
Sadeghi et al. An introduction to onshore structures’ construction
Sargent et al. Case histories of Corps breakwater and jetty structures
CN110397051A (en) A kind of cofferdam structure and construction method
CN219327071U (en) Combined hydraulic structure
KR102099932B1 (en) Construction method to prevent scouring using files and panels of offshore berthing facilities
CN204418102U (en) Curve bank protection structure
CN215165202U (en) High-efficient interim pier that combines gabion net and protect concrete certainly under water
CN216275471U (en) Wharf structure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination