CN113089567A - Fabricated concrete lattice group array coast erosion prevention structure - Google Patents
Fabricated concrete lattice group array coast erosion prevention structure Download PDFInfo
- Publication number
- CN113089567A CN113089567A CN202110411172.8A CN202110411172A CN113089567A CN 113089567 A CN113089567 A CN 113089567A CN 202110411172 A CN202110411172 A CN 202110411172A CN 113089567 A CN113089567 A CN 113089567A
- Authority
- CN
- China
- Prior art keywords
- staggered
- stirrups
- section
- coast
- arm
- 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.)
- Withdrawn
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
-
- 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
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 an assembled concrete lattice array coast erosion prevention structure, and belongs to the field of coast protection. The long extending arm and the small short arm are vertically orthogonal, staggered double-round-end stirrups and vertical stirrups which are vertically and uniformly distributed are respectively configured, and the staggered double-round-end stirrups are hooped by the equally-spaced vertical stirrups; the long extending arm and the small short arm are vertically orthogonal, and four inflection points formed by intersection are all in arc-shaped arc transition to form a node for reinforcing connection; the long extending arm is provided with a plurality of round overflow sand accumulation holes. The invention has the advantages of inhibiting the sand from flowing from the coast to the sea, trapping the sand flowing along with the near-shore flow and relieving the erosion of the coast. The fabricated concrete lattice array coast anti-erosion structure unit is reasonable in design and convenient to assemble; the method has the advantages that the industrial manufacturing construction is adopted, the engineering quantity is reduced, the construction efficiency is improved, the dismantled building materials can be recycled, and the waste is avoided. And by adopting a matrix mode, the water flow is effectively reduced, and sand in sea waves is collected more easily.
Description
Technical Field
The invention relates to the field of coast protection, in particular to an assembled concrete lattice array coast erosion prevention structure.
Background
The coastal zone is positioned at the junction of ocean, land and air, is a very sensitive zone, and is very easy to cause unbalanced silt collection and distribution of the coast under the influence of wind, wave, tide, flow and human activities, so that a series of coastal erosion phenomena such as coastline retreating, beach erosion and the like are caused. According to a 908 special investigation result report, the total erosion shoreline of continental coasts in China is 3255.3km, and the erosion of sandy coasts is 2463.4 km, which accounts for 49.5% of sandy coasts in China; the erosion of the silt coastline is 791.9km, which accounts for 7.3 percent of silt coasts in China, and seriously influences the sustainable development of ocean economy. The protection and repair of coastal erosion are brought forward, hard protection such as a seawall, a breakwater and a spur dike and a few soft protection are mostly adopted in the coast before, along with green environmental protection and deep humanity, the method also carries out and responds to 'development of blue bay renovation action' in China, and the national overall support places develop ecological repair engineering such as 'blue bay', 'south red north willow' and 'ecological reef island', and it can be seen that the future protection and repair are mainly ecological protection and repair.
For a long time, the coastal erosion degree is aggravated by a series of human activities and natural disasters which are difficult to predict, and relevant scholars do a great deal of work aiming at erosion phenomena of different erosion, so that scientific basis is provided for protection and repair of coastal zones. The relevant theoretical research conditions of coastal erosion in recent years at home and abroad, including coastal erosion mechanism, erosion reason and harm, are briefly described and discussed, the method for coastal protection and restoration is explored, and corresponding thinking is provided from the aspects of research methods, means and the like.
The sand beach of the coast is generated by accumulation of sand supplied from a river on land, a sand dune on the coast, and the sand supplied in a natural state is balanced with a phenomenon in which sand runs into the sea due to waves, so that the sand beach is maintained.
On the other hand, coastal sandy beach is not only in terms of environmental protection but also in terms of popularity in various ocean leisure sports, and the importance of this is also becoming prominent as a sightseeing resource, but because the shoreside of a river is buried or blocked by a concrete dike in river regulation works, the amount of sand flowing into the sea is drastically reduced due to the reduction of natural greenbelts caused by urban facility construction, the disappearance of coastal sand dunes caused by the burying, and the like, and the phenomenon of the reduction of the coastal sandy beach occurs.
According to the bank protection mode, the waves are pushed to the bank protection to scour the front of the bank protection, and sand loss cannot be prevented. The manual beach maintenance method in which sand is artificially input not only requires a large amount of expenses for sand collection and transportation but also is not a fundamental measure for preventing sand loss, and thus has a burden of continuously supplying sand.
Disclosure of Invention
In order to solve the technical problems, the invention provides an assembled concrete lattice array coast erosion prevention structure which not only can achieve the coast erosion prevention effect, but also can be conveniently removed after the protection requirement is finished;
the technical scheme adopted by the invention is as follows:
the coast anti-erosion structure of the assembled concrete lattice array is a reinforced concrete prefabricated part and mainly comprises a long extending arm, a small short arm, a node, a widened base, a connecting semicircular groove, staggered double-round-end stirrups, vertical stirrups, octagonal node stirrups, a bottom anchor and a water-passing sand accumulation hole;
the long extending arm and the small short arm are vertically orthogonal, and four inflection points formed by intersection are all in arc-shaped arc transition to form a node for reinforcing connection;
the length of the long extending arm is 5-10 times of the length of the small short arm; the cross sections of the long extending arm and the small short arm are the same in shape and size, and are all isosceles trapezoids, and the bottom of the long extending arm and the small short arm is a widened base;
the long extending arm and the small short arm are respectively provided with staggered double-circular-end stirrups which are vertically and uniformly distributed, the staggered double-circular-end stirrups are bound at the intersection, two ends of the long extending arm and the small short arm extend out of the inwards-concave connecting semicircular groove, and the distance between two ends of the staggered double-circular-end stirrups and the other semicircular arc of the circle where the connecting semicircular groove is located is 10-20 mm; the height difference of two ends of the same staggered double-round-end stirrup is 20-50 mm, a middle staggered section of the staggered double-round-end stirrup is positioned inside the node, a first inclined section is positioned in a long extending arm close to the node, and a second inclined section is positioned in a small short arm close to the node;
rectangular vertical stirrups are arranged in the long extending arm, the small short arm and the node, the staggered double-round-end stirrups are hooped by the equidistant vertical stirrups, and the intersection of the vertical stirrups and the staggered double-round-end stirrups is bound;
horizontal octagonal node stirrups which are vertically and uniformly distributed are arranged in the nodes, and the octagonal node stirrups are arranged at the intersection of staggered double-round-end stirrups and vertical stirrups and hoop the vertical stirrups;
the long extending arm and the small short arm are provided with evenly distributed bottom anchors, and the cross sections of the bottom anchors vertical to the long extending arm and the small short arm are isosceles triangles;
the long extending arm is provided with a plurality of circular sand passing holes, and each sand passing hole is positioned in a rectangle formed by the staggered double-circular-end stirrups and the vertical stirrups.
Furthermore, the staggered double-round-end stirrup mainly comprises a pre-buried section, a semi-circle overhanging section, a bottom staggered layer section, a top staggered layer section, a middle staggered layer section, a first inclined section and a second inclined section;
the staggered double-round-end stirrup is a hoop formed by bending a steel bar, semicircular outward extending sections are arranged at two ends of the hoop, and the middle embedded section comprises a bottom staggered layer section, a top staggered layer section, a middle staggered layer section, a first inclined section and a second inclined section;
the bottom staggered layer section, the middle staggered layer section and the top staggered layer section are lifted layer by layer, the bottom staggered layer section and the top staggered layer section are positioned at two ends, and the middle staggered layer section is positioned in the middle;
a first inclined section formed by inclined steel bars is arranged between the bottom staggered layer section and the middle staggered layer section;
and a second inclined section formed by inclined steel bars is arranged between the middle staggered layer section and the top staggered layer section.
Furthermore, the assembled concrete lattice array coast anti-erosion structure units are long arms of one assembled concrete lattice array coast anti-erosion structure unit and small short arms of the other assembled concrete lattice array coast anti-erosion structure unit when being assembled, the two connecting semicircular grooves form a cylinder in an enclosing mode, and concrete is poured into the cylinder.
The invention has the advantages that:
the sand flow from the coast to the sea is inhibited, and the sand flowing along with the near-shore flow is captured, so that the erosion of the coast is relieved, and the coastal beach is protected. The fabricated concrete lattice array coast anti-erosion structure unit is reasonable in design and convenient to assemble; the method has the advantages that the industrial manufacturing and construction are adopted, the engineering quantity is effectively reduced, the construction efficiency is improved, the removed building materials can be recycled, and the waste of the building materials is avoided. By adopting the array mode, the water flow not only effectively decelerates, but also more easily collects sand in the sea waves.
Drawings
FIG. 1 is a schematic top view of an assembled concrete lattice array coast erosion prevention structural unit;
FIG. 2 is a schematic side view of an assembled concrete lattice array coast erosion prevention structural unit;
FIG. 3 is a schematic top view of a split-level double-round-end stirrup;
FIG. 4 is a schematic side view of a split-level double-round-end stirrup;
fig. 5 is a schematic top view of an assembled concrete lattice array coast erosion prevention structure.
In the figure, 1 is a long arm; 2 is a small short arm; 3 is a node; 4 is a widened base; 5 is a connecting semicircular groove; 6 is a staggered double-round-end stirrup; 7 is a vertical stirrup; 8 is an octagonal node stirrup; 9 is a bottom anchor; and 10 is a water sand accumulation hole.
6-1 is a pre-buried section; 6-2 is a semicircular extending section; 6-3 is a bottom staggered layer section; 6-4 is a top staggered layer section; 6-5 is a middle-staggered layer section; 6-6 is a first inclined section; 6-7 are second oblique sections.
Detailed Description
In order to further illustrate the present invention, the following detailed description of the present invention is given with reference to the accompanying drawings and examples, which should not be construed as limiting the scope of the present invention.
The fabricated concrete lattice array coast erosion prevention structure provided by the invention is shown in figures 1-5.
The coast anti-erosion structure of the assembled concrete lattice array is a reinforced concrete prefabricated part and mainly comprises a long extending arm 1, a small short arm 2, a node 3, a widened base 4, a connecting semicircular groove 5, staggered double-circular-end stirrups 6, vertical stirrups 7, octagonal node stirrups 8, a bottom anchor 9 and a water-passing sand accumulation hole 10;
the long extending arm 1 and the small short arm 2 are vertically orthogonal, and four inflection points formed by intersection are all in arc-shaped arc transition to form a node 3 for strengthening connection;
the length of the long extension arm 1 is 5-10 times of the length of the small short arm 2; the cross sections of the long extending arm 1 and the small short arm 2 are the same in shape and size, and are isosceles trapezoids, and the bottom of the long extending arm and the small short arm are widened bases 4;
the long extending arm 1 and the small short arm 2 are respectively provided with staggered double-circular-end stirrups 6 which are vertically and uniformly distributed, the staggered double-circular-end stirrups 6 are bound at the intersection, two ends of the long extending arm 1 and two ends of the small short arm 2 both extend out of the inwards-concave connecting semicircular groove 5, and the distance between two ends of the staggered double-circular-end stirrups 6 and the other semicircular arc of the circle where the connecting semicircular groove 5 is located is 10-20 mm; the height difference of two ends of the same staggered double-round-end stirrup 6 is 20-50 mm, a middle staggered section 6-5 of the staggered double-round-end stirrup 6 is positioned inside the node 3, a first inclined section 6-6 is positioned in the long extending arm 1 close to the node 3, and a second inclined section 6-7 is positioned in the small short arm 2 close to the node 3;
rectangular vertical stirrups 7 are arranged in the long extending arm 1, the small short arm 2 and the node 3, the staggered double-round-end stirrups 6 are hooped by the equally-spaced vertical stirrups 7, and the intersections of the vertical stirrups 7 and the staggered double-round-end stirrups 6 are bound;
horizontal octagonal node stirrups 8 which are vertically and uniformly distributed are arranged in the node 3, the octagonal node stirrups 8 are arranged at the intersection of the staggered double-round-end stirrups 6 and the vertical stirrups 7, and the vertical stirrups 7 are hooped;
evenly distributed bottom anchors 9 are arranged on the long extending arm 1 and the small short arm 2, and the cross sections of the bottom anchors 9 vertical to the long extending arm 1 and the small short arm 2 are isosceles triangles;
a plurality of circular water and sand passing holes 10 are formed in the long extending arm 1, and each water and sand passing hole 10 is located in a rectangle formed by the staggered double-circular-end stirrups 6 and the vertical stirrups 7.
Further, the staggered double-circular-end stirrup 6 mainly comprises a pre-embedded section 6-1, a semicircular outward-extending section 6-2, a bottom staggered section 6-3, a top staggered layer section 6-4, a middle staggered layer section 6-5, a first inclined section 6-6 and a second inclined section 6-7;
the staggered double-round-end stirrup 6 is a hoop formed by bending a steel bar, semicircular semi-round overhanging sections 6-2 are arranged at two ends of the hoop, and the middle embedded section 6-1 comprises a bottom staggered layer section 6-3, a top staggered layer section 6-4, a middle staggered layer section 6-5, a first inclined section 6-6 and a second inclined section 6-7;
the bottom staggered floor section 6-3, the middle staggered floor section 6-5 and the top staggered floor section 6-4 are raised layer by layer, the bottom staggered floor section 6-3 and the top staggered floor section 6-4 are positioned at two ends, and the middle staggered floor section 6-5 is positioned in the middle;
a first inclined section 6-6 formed by inclined steel bars is arranged between the bottom staggered layer section 6-3 and the middle staggered layer section 6-5;
a second inclined section 6-7 formed by inclined steel bars is arranged between the middle staggered layer section 6-5 and the top staggered layer section 6-4.
The assembled concrete lattice array coast anti-erosion structure unit is characterized in that a long extending arm 1 of one assembled concrete lattice array coast anti-erosion structure unit is connected with a small short arm 2 of the other assembled concrete lattice array coast anti-erosion structure unit when being assembled, two connecting semicircular grooves 5 enclose a cylinder, and concrete is poured in the cylinder.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. Assembled concrete lattice group battle array coast erosion prevention structure, its characterized in that: the fabricated concrete lattice array coast anti-erosion structure unit is a reinforced concrete prefabricated part and mainly comprises a long extending arm (1), a small short arm (2), a node (3), a widened base (4), a connecting semi-circular groove (5), staggered double-circular-end stirrups (6), vertical stirrups (7), octagonal node stirrups (8), a bottom anchor (9) and a water-passing sand accumulation hole (10); the long extending arm (1) and the small short arm (2) are vertically orthogonal, and four inflection points formed by intersection are in arc-shaped arc transition to form a reinforced connection node (3); the length of the long extending arm (1) is 5-10 times of the length of the small short arm (2); the cross sections of the long extending arm (1) and the small short arm (2) are the same in shape and size, and are isosceles trapezoids, and the bottom of the long extending arm and the small short arm is a widened base (4); the long extending arm (1) and the small short arm (2) are respectively provided with staggered double-circular-end stirrups (6) which are vertically and uniformly distributed, the staggered double-circular-end stirrups (6) are bound at the intersection, two ends of the long extending arm (1) and two ends of the small short arm (2) both extend out of the inwards-concave connecting semicircular groove (5), and the distance between two ends of the staggered double-circular-end stirrups (6) and the other semicircular arc of the circle where the connecting semicircular groove (5) is located is 10-20 mm; the height difference of two ends of the same staggered double-round-end stirrup (6) is 20-50 mm, a middle staggered layer section (6-5) of the staggered double-round-end stirrup (6) is positioned inside the node (3), a first inclined section (6-6) is positioned in the long extending arm (1) close to the node (3), and a second inclined section (6-7) is positioned in the small short arm (2) close to the node (3); rectangular vertical stirrups (7) are arranged in the long extending arm (1), the small short arm (2) and the node (3), the staggered double-round-end stirrups (6) are hooped by the equally-spaced vertical stirrups (7), and the intersections of the vertical stirrups (7) and the staggered double-round-end stirrups (6) are bound; horizontal octagonal node stirrups (8) which are uniformly distributed in the vertical direction are arranged in the node (3), the octagonal node stirrups (8) are arranged at the intersection of the staggered double-round-end stirrups (6) and the vertical stirrups (7), and the vertical stirrups (7) are hooped; the long extending arm (1) and the small short arm (2) are provided with evenly distributed bottom anchors (9), and the cross sections of the bottom anchors (9) vertical to the long extending arm (1) and the small short arm (2) are isosceles triangles; a plurality of circular water sand accumulation holes (10) are formed in the long extending arm (1), and each water sand accumulation hole (10) is located in a rectangle formed by encircling the staggered double-circular-end stirrups (6) and the vertical stirrups (7).
2. The fabricated concrete lattice array coastal erosion prevention structure as claimed in claim 1, wherein the staggered double-round-end stirrup (6) mainly comprises an embedded section (6-1), a semi-circle outer-extending section (6-2), a bottom staggered section (6-3), a top staggered section (6-4), a middle staggered section (6-5), a first inclined section (6-6) and a second inclined section (6-7); the staggered double-round-end stirrup (6) is a hoop formed by bending a steel bar, the two ends of the hoop are semicircular outward extending sections (6-2), and the middle embedded section (6-1) comprises a bottom staggered layer section (6-3), a top staggered layer section (6-4), a middle staggered layer section (6-5), a first inclined section (6-6) and a second inclined section (6-7); the bottom staggered layer section (6-3), the middle staggered layer section (6-5) and the top staggered layer section (6-4) are lifted layer by layer, the bottom staggered layer section (6-3) and the top staggered layer section (6-4) are positioned at two ends, and the middle staggered layer section (6-5) is positioned in the middle; a first inclined section (6-6) formed by inclined steel bars is arranged between the bottom staggered layer section (6-3) and the middle staggered layer section (6-5); a second inclined section (6-7) formed by inclined steel bars is arranged between the middle staggered layer section (6-5) and the top staggered layer section (6-4).
3. The fabricated concrete lattice array coast anti-erosion structure according to claim 1, wherein the fabricated concrete lattice array coast anti-erosion structure units are all long-extending arms (1) of one fabricated concrete lattice array coast anti-erosion structure unit connected with small-short arms (2) of the other fabricated concrete lattice array coast anti-erosion structure unit when being fabricated, the two connecting semicircular grooves (5) enclose a cylinder, and concrete is poured in the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110411172.8A CN113089567A (en) | 2021-04-16 | 2021-04-16 | Fabricated concrete lattice group array coast erosion prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110411172.8A CN113089567A (en) | 2021-04-16 | 2021-04-16 | Fabricated concrete lattice group array coast erosion prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113089567A true CN113089567A (en) | 2021-07-09 |
Family
ID=76678347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110411172.8A Withdrawn CN113089567A (en) | 2021-04-16 | 2021-04-16 | Fabricated concrete lattice group array coast erosion prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113089567A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060114815A (en) * | 2005-05-03 | 2006-11-08 | 이근희 | Method for constructing the coastline covering structures having a buffering function preventing the coastal erosion |
| KR102052926B1 (en) * | 2019-03-21 | 2019-12-06 | 한국해양과학기술원 | Artificial reef having plus type fishway |
| CN210177522U (en) * | 2019-05-30 | 2020-03-24 | 广东大潮高速公路有限公司 | Ecological slope protection structure of prefabricated assembled anchor rope lattice beam |
| CN210315591U (en) * | 2019-04-10 | 2020-04-14 | 北京铁科特种工程技术有限公司 | Two-way isometric prefabricated lattice girder of non- |
| CN111997066A (en) * | 2020-08-17 | 2020-11-27 | 北京铁科特种工程技术有限公司 | Manufacturing and construction method of assembled prestressed anchor cable frame beam for slope reinforcement |
| CN112431165A (en) * | 2020-11-20 | 2021-03-02 | 江苏科技大学 | Reinforcing device for ecologically reinforcing sandy coast side slope and construction method |
-
2021
- 2021-04-16 CN CN202110411172.8A patent/CN113089567A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060114815A (en) * | 2005-05-03 | 2006-11-08 | 이근희 | Method for constructing the coastline covering structures having a buffering function preventing the coastal erosion |
| KR102052926B1 (en) * | 2019-03-21 | 2019-12-06 | 한국해양과학기술원 | Artificial reef having plus type fishway |
| CN210315591U (en) * | 2019-04-10 | 2020-04-14 | 北京铁科特种工程技术有限公司 | Two-way isometric prefabricated lattice girder of non- |
| CN210177522U (en) * | 2019-05-30 | 2020-03-24 | 广东大潮高速公路有限公司 | Ecological slope protection structure of prefabricated assembled anchor rope lattice beam |
| CN111997066A (en) * | 2020-08-17 | 2020-11-27 | 北京铁科特种工程技术有限公司 | Manufacturing and construction method of assembled prestressed anchor cable frame beam for slope reinforcement |
| CN112431165A (en) * | 2020-11-20 | 2021-03-02 | 江苏科技大学 | Reinforcing device for ecologically reinforcing sandy coast side slope and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204849680U (en) | Novel ecological shore protection system | |
| CN207760804U (en) | A kind of Multi-functional economy dike structure | |
| CN110184994B (en) | Combined submerged dike structure and manufacturing method thereof | |
| CN104594287A (en) | Ecological and economic bank protection structure | |
| CN204676485U (en) | A kind of Eco-economic Type bank protection structure | |
| CN113089567A (en) | Fabricated concrete lattice group array coast erosion prevention structure | |
| CN203821306U (en) | Flexible anti-scour protection pad | |
| CN1019915C (en) | Device of automatically laying rollers for preventing flushing | |
| CN216999263U (en) | Protective structure of pier | |
| CN104963323A (en) | Scour-preventing groove for chain precast block protective surface | |
| CN112921889A (en) | Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure | |
| CN212316830U (en) | Hydraulic engineering is with ecological slope protection brick of concatenation formula | |
| CN114214975A (en) | Pier repairing method and pier protection structure | |
| CN210899012U (en) | Be applied to photovoltaic power generation structure of breakwater | |
| CN210049039U (en) | Pavement structure of road surface sinks | |
| CN206385502U (en) | A kind of assembling-type precast channel revetment of rapid construction | |
| CN204728288U (en) | Chain prefabricated section mask anti-scour trench | |
| CN105256783B (en) | Stacked assembly type guide pier structure | |
| CN215562763U (en) | Supporting construction of channel excavation protection current situation signal tower | |
| CN215829235U (en) | Tower water inlet cast-in-place traffic bridge of power station bank | |
| CN213014153U (en) | Protection type bank protection for hydraulic engineering | |
| CN220619937U (en) | River concrete slope type revetment ecological reconstruction structure | |
| CN220318450U (en) | Check dam structure for erosion ditch treatment | |
| CN219157742U (en) | Anti-sedimentation dam foundation | |
| CN113216079A (en) | Fabricated concrete I-shaped plate sea shore erosion prevention 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210709 |
|
| WW01 | Invention patent application withdrawn after publication |