CN110184994B - Combined submerged dike structure and manufacturing method thereof - Google Patents
Combined submerged dike structure and manufacturing method thereof Download PDFInfo
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- CN110184994B CN110184994B CN201910421727.XA CN201910421727A CN110184994B CN 110184994 B CN110184994 B CN 110184994B CN 201910421727 A CN201910421727 A CN 201910421727A CN 110184994 B CN110184994 B CN 110184994B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008635 plant growth Effects 0.000 claims description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 235000015097 nutrients Nutrition 0.000 claims description 14
- 239000002689 soil Substances 0.000 claims description 14
- 239000011178 precast concrete Substances 0.000 claims description 10
- 238000009991 scouring Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000009182 swimming Effects 0.000 abstract description 5
- 239000013535 sea water Substances 0.000 abstract description 4
- 230000006378 damage Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001474374 Blennius Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/066—Quays
-
- 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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- 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 discloses a combined submerged dike structure, which comprises a rigid submerged dike wave-blocking structure and a flexible plant wave-dissipating structure which are arranged in parallel, and has a good wave-dissipating effect. The rigid submerged dike wave-blocking structure is designed based on the Bragg resonance principle and has obvious wave-proof and bank-protection effects. The wave-eliminating structure of the flexible plant adopts emergent aquatic flexible plants to eliminate waves, which can obviously improve the water environment and maintain ecological benefits. Meanwhile, the concrete frame structure of the flexible plant wave-eliminating structure can form a good sea water flow channel, and is beneficial to water exchange at two sides and aquatic organism swimming. The method for manufacturing the combined submerged dike structure is low in cost and convenient to construct. The invention has practical value and ecological significance.
Description
Technical Field
The invention belongs to the technical field of port and coast engineering, and particularly relates to a combined submerged dike structure and a manufacturing method thereof.
Background
Coastal erosion causes great loss of land, destruction of coastal structures and deterioration of beach ecological environment, and causes great harm to the production, life and property safety and ecological environment of people. The submerged dike is a common hydraulic building for protecting beach and promoting siltation, and has the functions of blocking wave impact force, improving water siltation conditions and the like. And secondly, the ship belongs to an underwater building, so that the ship navigation is not affected, the attractive appearance of the coast can be maintained, and the ship navigation system is widely applied to wave elimination and silt promotion on the coast.
The top surface and the upper layer part of the traditional riprap submerged dike are positioned in the region where wave energy is concentrated, the borne wave load is larger, the main wave dissipating part is a large face protection structure, the special-shaped face protection block structure is also adopted to block waves and dissipate the waves at present, but the construction is complex, the wave dissipating effect is not obvious, the damage is easy to occur under the extreme wave conditions such as typhoon or storm surge, and the repairing process is complex. In addition, the traditional riprap submerged dike is unfavorable for the exchange of water bodies at two sides of the submerged dike due to higher elevation of the dike top, and has certain influence on the swimming of marine organisms and the ecological environment.
Marine plants are abundant in variety, and flexible plants typified by seaweed are widely present in the ocean. The flexible plants can purify water bodies, provide natural pastures for various marine organisms, have stronger wave-eliminating capacity, can resist the scouring of waves better than rigid plants, and have obvious wave-preventing and bank-protecting effects.
In summary, how to design a reasonable submerged dike structure, which can not only improve the wave-eliminating capability and effectively protect the coast, but also reduce the damage to the ecological environment so as to meet the requirement of maintaining the local ecological landscape is a problem to be solved.
Disclosure of Invention
The invention provides a combined submerged dike structure and a manufacturing method thereof, which solve the technical problems of unstable submerged dike structure, complex construction, material waste, high engineering cost and damage to ecological environment.
In order to solve the technical problems, the invention adopts the following technical scheme: a combined submerged dike structure comprises a rigid submerged dike wave-blocking structure and a flexible plant wave-dissipating structure which are arranged in parallel, wherein the flexible plant wave-dissipating structure is arranged on the shore side of the rigid submerged dike wave-blocking structure; the rigid submerged dike wave-blocking structure comprises a plurality of wave crest column units, wherein the wave crest column units are arranged periodically; the flexible plant wave-eliminating structure comprises a concrete frame, wherein a reinforcing steel bar structure net is anchored at the top of the concrete frame, and a plant growth frame is fixedly connected to the top surface of the reinforcing steel bar structure net and used for placing emergent aquatic flexible plants.
Further, the rigid submerged dike wave-blocking structure comprises at least 2 wave crest column units which are arranged periodically.
Further, the periodically arranged undulating extension direction coincides with the direction of the incident wave of the target sea area.
Further, the wavelength of the crest cylinder units is a positive integer multiple of half of the incident wavelength of the target sea wave, and the distance between the crest cylinder units which are adjacently arranged is equal to the wavelength of the crest cylinder units.
Further, the concrete frame is a precast concrete frame structure.
Further, the steel bar structure net is formed by orderly interweaving thin steel bars. The function of supporting the weight of the structure on the net surface is achieved.
Further, a plurality of groups of symmetrical round holes are formed in the side wall and the bottom surface of the plant growth frame, and the plant growth frame is fixedly connected with the steel bar structure net through the symmetrical round holes by thin steel bars.
Further, a nutrient soil layer for plant growth is paved in the plant growth frame, and a sand stone layer is covered on the nutrient soil layer. Plays a role in improving the anti-scouring capability of plants.
A method for manufacturing a combined submerged dike structure based on any one of claims 1-8, comprising the following steps:
s1, collecting wave height of target sea area wavesHWavelength ofLCycle ofTDepth of waterhData of (2);
s2, determining the size of the crest cylinder unit based on the data in the step S1, wherein the length of the crest cylinder unitlWavelength of peak cylinder unit determined according to length of protected coastL b Incident wavelength for the wave of the target sea areaLHalf positive integer multiple of peak column unit amplitudeDWith depth of waterhThe ratio of (2) is greater than 0.1;
s3, paving a rigid submerged dike wave-resistant structure in a target sea area: in the target sea area, arranging at least 2 wave crest cylinders prefabricated in the step S2 according to periodicity, and spacing wave crest cylinder units adjacently arrangeddWavelength with peak column unitL b The periodically arranged fluctuation extending directions are identical to the incident wave directions of the target sea areas;
s4, paving a flexible plant wave-dissipating structure in a target sea area: firstly, fixedly placing a precast concrete frame on the shore side of a rigid submerged dike wave-blocking structure, and then anchoring a steel bar structure net on the top of the precast concrete frame;
s5, fixing a plant growth frame on the steel bar structure net: thin steel bars penetrate through round holes reserved in the plant growth frame, and the plant growth frame and a steel bar structure net at the bottom of the plant growth frame are bound and fixed;
s6, paving nutrient soil in the plant growth frame, planting emergent aquatic flexible plants, and then covering a sand layer on the nutrient soil layer to improve the anti-scouring capability of the plants.
The invention has the beneficial effects that: the rigid submerged dike wave-resistant structure and the flexible plant wave-dissipating structure which are arranged in parallel have better wave-dissipating effect. The rigid submerged dike wave-blocking structure is designed based on the Bragg resonance principle and has obvious wave-proof and bank-protection effects. The wave-eliminating structure of the flexible plant adopts emergent aquatic flexible plants to eliminate waves, which can obviously improve the water environment and maintain ecological benefits. Meanwhile, the concrete frame structure of the flexible plant wave-eliminating structure can form a good sea water flow channel, and is beneficial to water exchange at two sides and aquatic organism swimming. The manufacturing method of the combined submerged dike structure has low cost and is convenient for construction. The invention has practical value and ecological significance.
Drawings
FIG. 1 is a schematic view of a combined novel submerged dike structure according to the invention;
FIG. 2 is a top view of the combined novel submerged dike structure according to the invention;
fig. 3 is a schematic view of a rebar structure grid according to the present invention;
fig. 4 is a top view of a plant growing frame according to the present invention.
In the figure: 1-a rigid submerged dike wave-blocking structure; 2-a wave-dissipating structure of the flexible plant; 3-peak column units; 4-concrete frame; 5-a steel bar structure net; 6-a plant growth frame; 7-emergent aquatic flexible plants; 8-round holes.
Detailed Description
The invention is further described below. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1-4, a combined submerged dike structure comprises wave-dissipating structures which are arranged in parallel and cooperate to dissipate waves, wherein the wave-dissipating structures comprise a rigid submerged dike wave-dissipating structure 1 and a flexible plant wave-dissipating structure 2, and the flexible plant wave-dissipating structure 2 is arranged on the shore side of the rigid submerged dike wave-dissipating structure 1. The rigid submerged dike wave-blocking structure 1 consists of a plurality of wave crest column units 3 which are arranged periodically, incident waves are reflected by the rigid submerged dike wave-blocking structure 1 due to Bragg resonance, and a standing wave zone is formed on the wave-facing side of the rigid submerged dike wave-blocking structure, so that wave energy passing through the submerged dike is primarily and effectively weakened. The flexible plant wave-eliminating structure 2 comprises a fixed concrete frame 4, a reinforced structural net 5, a plant growth frame 6 and emergent aquatic flexible plants 7, and can secondarily weaken wave energy after a dyke. The top of the concrete frame 4 is anchored with a steel bar structure net 5, the top surface of the steel bar structure net 5 is fixedly connected with a plant growth frame 6, and the plant growth frame 6 is used for placing emergent aquatic flexible plants 7.
The rigid submerged dike wave-blocking structure 1 comprises at least 2 wave crest column units 3 which are arranged periodically. The periodically arranged undulating extension direction coincides with the direction of the incident wave of the target sea area. The wavelength of the crest cylinder units is a positive integer multiple of half of the incident wavelength of the target sea wave, and the distance between the crest cylinder units 3 which are adjacently arranged is equal to the wavelength of the crest cylinder units 3.
The concrete frame 4 of the flexible plant wave-dissipating structure 2 is a precast concrete frame structure, can form a good sea water flow channel, and is beneficial to water exchange at two sides and aquatic organism swimming. The steel bar structure net 5 is formed by orderly interweaving thin steel bars, and can sufficiently support the weight of the structural objects on the steel bar structure net 5.
A plurality of groups of symmetrical round holes 8 are formed in the side wall and the bottom surface of the plant growth frame 6, the junction of the side wall and the bottom surface is taken as a symmetry axis, and the round holes 8 on the corresponding side wall and bottom surface are symmetrically arranged along the symmetry axis. The symmetrical round holes 8 facilitate the fixing of the plant growth frame 6 to the mesh 5 with thin steel bars. Nutrient soil for plant growth is paved in the plant growth frame 5, and sandstone is covered on the nutrient soil, so that the anti-scouring capability of plants is improved.
The rigid submerged dike wave-resistant structure and the flexible plant wave-dissipating structure which are arranged in parallel have better wave-dissipating effect. The rigid submerged dike wave-blocking structure is designed based on the Bragg resonance principle and has obvious wave-proof and bank-protection effects. The wave-eliminating structure of the flexible plant adopts emergent aquatic flexible plants to eliminate waves, which can obviously improve the water environment and maintain ecological benefits. Meanwhile, the concrete frame structure of the flexible plant wave-eliminating structure can form a good sea water flow channel, and is beneficial to water exchange at two sides and aquatic organism swimming.
Method for manufacturing combined submerged dike structure
Step one: collecting wave height of target sea area waveHWavelength ofLCycle ofTDepth of waterhIs a data of (a) a data of (b).
Step two: determining the size of the peak cylinder unit based on the data of the step one, and the length of the peak cylinder unitlWavelength of peak cylinder unit determined according to length of protected coastL b Incident wavelength for the wave of the target sea areaLHalf of the peak column unit amplitudeDWith depth of waterhThe ratio is 0.16;
step three, in the target sea area, the 3 wave crest cylinders prefabricated in the step two are arranged periodically, and the intervals of wave crest cylinder units arranged adjacently are equal to each otherdWavelength with peak column unitL b And the periodically arranged fluctuation extending direction is identical to the incident wave direction of the target sea area, so that the laying of the rigid submerged dike wave-blocking structure in the target sea area is completed.
And fourthly, fixedly placing a precast concrete frame on the shore side of the rigid submerged dike wave-blocking structure, and then anchoring a steel bar structure net at the top of the precast concrete frame to finish the laying of the flexible plant wave-dissipating structure laid in the target sea area.
Step five, fixing a plant growth frame on the steel bar structure net: thin steel bars penetrate through round holes reserved in the plant growth frame, and the plant growth frame and a steel bar structure net at the bottom of the plant growth frame are bound and fixed.
And step six, paving nutrient soil in the plant growth frame, planting emergent aquatic flexible plants, and then covering a sand layer on the nutrient soil layer to improve the anti-scouring capability of the plants.
Method for manufacturing combined submerged dike structure
Step one: collecting wave height of target sea area waveHWavelength ofLCycle ofTDepth of waterhIs a data of (a) a data of (b).
Step two: determining peak cylinder based on the data of step oneSize of the units, length of peak column unitslWavelength of peak cylinder unit determined according to length of protected coastL b Equal to the incident wavelength of the wave in the target seaLAmplitude of peak column unitDWith depth of waterhThe ratio is 0.18;
step three, in the target sea area, the 4 wave crest cylinders prefabricated in the step two are arranged periodically, and the intervals of wave crest cylinder units arranged adjacently are equal to each otherdWavelength with peak column unitL b And the periodically arranged fluctuation extending direction is identical to the incident wave direction of the target sea area, so that the laying of the rigid submerged dike wave-blocking structure in the target sea area is completed.
And fourthly, fixedly placing a precast concrete frame on the shore side of the rigid submerged dike wave-blocking structure, and then anchoring a steel bar structure net at the top of the precast concrete frame to finish the laying of the flexible plant wave-dissipating structure laid in the target sea area.
Step five, fixing a plant growth frame on the steel bar structure net: thin steel bars penetrate through round holes reserved in the plant growth frame, and the plant growth frame and a steel bar structure net at the bottom of the plant growth frame are bound and fixed.
And step six, paving nutrient soil in the plant growth frame, planting emergent aquatic flexible plants, and then covering a sand layer on the nutrient soil layer to improve the anti-scouring capability of the plants.
The manufacturing method of the combined submerged dike structure has low cost, is convenient for construction, and has practical value and ecological significance.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (9)
1. The combined submerged dike structure is characterized by comprising a rigid submerged dike wave-blocking structure and a flexible plant wave-dissipating structure which are arranged in parallel, wherein the flexible plant wave-dissipating structure is arranged on the shore side of the rigid submerged dike wave-blocking structure;
the rigid submerged dike wave-blocking structure comprises a plurality of wave crest column units, wherein the wave crest column units are arranged periodically;
the flexible plant wave-eliminating structure comprises a concrete frame, wherein a reinforcing steel bar structure net is anchored at the top of the concrete frame, and a plant growth frame is fixedly connected to the top surface of the reinforcing steel bar structure net and used for placing emergent aquatic flexible plants.
2. A modular submerged dike structure according to claim 1, wherein said rigid submerged dike wave barrier comprises at least 2 periodically arranged peak column units.
3. A combined submerged dike structure according to claim 1, wherein the periodically arranged undulating extension direction coincides with the direction of the incident waves of the target sea area.
4. A combined submerged dike structure according to claim 1, wherein the wavelength of the peak cylinder units is a positive integer multiple of half the incident wavelength of the wave in the target sea area, and the pitch of the adjacent peak cylinder units is equal to the wavelength of the peak cylinder units.
5. A combined submerged dike structure according to claim 1, wherein the concrete frame is a prefabricated concrete frame structure.
6. A combined submerged dike structure according to claim 1, wherein the mesh of rebar structures is formed by orderly interweaving thin rebar.
7. The combined submerged dike structure according to claim 1, wherein the side wall and the bottom surface of the plant growth frame are provided with a plurality of groups of symmetrical round holes, and the plant growth frame is fixedly connected with the steel bar structure net by thin steel bars penetrating through the symmetrical round holes.
8. The combined submerged dike structure according to claim 1, wherein a nutrient soil layer for plant growth is paved in the plant growth frame, and a sand stone layer is covered on the nutrient soil layer.
9. A method for manufacturing a combined submerged dike structure based on any one of claims 1-8, which is characterized by comprising the following steps:
s1, collecting wave height of target sea area wavesHWavelength ofLCycle ofTDepth of waterhData of (2);
s2, determining the size of the crest cylinder unit based on the data in the step S1, wherein the length of the crest cylinder unitlWavelength of peak cylinder unit determined according to length of protected coastL b Incident wavelength for the wave of the target sea areaLHalf positive integer multiple of peak column unit amplitudeDWith depth of waterhThe ratio of (2) is greater than 0.1;
s3, paving a rigid submerged dike wave-resistant structure in a target sea area: in the target sea area, arranging at least 2 wave crest cylinders prefabricated in the step S2 according to periodicity, and spacing wave crest cylinder units adjacently arrangeddWavelength with peak column unitL b The periodically arranged fluctuation extending directions are identical to the incident wave directions of the target sea areas;
s4, paving a flexible plant wave-dissipating structure in a target sea area: firstly, fixedly placing a precast concrete frame on the shore side of a rigid submerged dike wave-blocking structure, and then anchoring a steel bar structure net on the top of the precast concrete frame;
s5, fixing a plant growth frame on the steel bar structure net: thin steel bars penetrate through round holes reserved in the plant growth frame, and the plant growth frame and a steel bar structure net at the bottom of the plant growth frame are bound and fixed;
s6, paving nutrient soil in the plant growth frame, planting emergent aquatic flexible plants, and then covering a sand layer on the nutrient soil layer to improve the anti-scouring capability of the plants.
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| CN201910421727.XA CN110184994B (en) | 2019-05-21 | 2019-05-21 | Combined submerged dike structure and manufacturing method thereof |
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| CN110184994B true CN110184994B (en) | 2023-12-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111027130B (en) * | 2020-01-02 | 2023-07-14 | 天津城建大学 | Ecological submerged dike with kelp wave-eliminating function, design method and design system |
| CN111691362A (en) * | 2020-06-19 | 2020-09-22 | 河海大学 | Novel ecological combined seawall structure and manufacturing method |
| CN112765911B (en) * | 2021-01-26 | 2022-07-01 | 中国海洋大学 | Hydrodynamic characteristic analysis method and device for multiple rows of submerged dikes and electronic equipment |
| CN113293730B (en) * | 2021-04-01 | 2022-07-15 | 中国海洋大学 | Beach sand stabilization regulation and control method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4025331A1 (en) * | 1990-08-10 | 1992-02-13 | Ernst Back | Coastal erosion prevention device - has buoyancy body to dampen wave movement and generate electricity |
| CN103669287A (en) * | 2013-12-17 | 2014-03-26 | 江苏省林业科学研究院 | Ecological wave-weakening water conservation revetment structure |
| CN205688393U (en) * | 2016-06-21 | 2016-11-16 | 河海大学 | A kind of novel combination type breakwater |
| CN106836118A (en) * | 2017-03-21 | 2017-06-13 | 河海大学 | A kind of staged plant wave attenuating device for littoral zone protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101450787B1 (en) * | 2013-02-20 | 2014-10-13 | 한국해양대학교 산학협력단 | Erosion protection block and arrangement structure thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4025331A1 (en) * | 1990-08-10 | 1992-02-13 | Ernst Back | Coastal erosion prevention device - has buoyancy body to dampen wave movement and generate electricity |
| CN103669287A (en) * | 2013-12-17 | 2014-03-26 | 江苏省林业科学研究院 | Ecological wave-weakening water conservation revetment structure |
| CN205688393U (en) * | 2016-06-21 | 2016-11-16 | 河海大学 | A kind of novel combination type breakwater |
| CN106836118A (en) * | 2017-03-21 | 2017-06-13 | 河海大学 | A kind of staged plant wave attenuating device for littoral zone protection |
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