阅读说明：本技术 组合式玻璃纤维筋增强混凝土人工鱼礁、控制方法及应用 (Combined glass fiber reinforced concrete artificial fish reef, control method and application ) 是由 董坤 戢治鹏 王秀英 杨树桐 蒋济同 杜德润 于 2021-01-28 设计创作，主要内容包括：本发明属于人工鱼礁技术领域,公开了一种组合式玻璃纤维筋增强混凝土人工鱼礁、控制方法及应用,主横杆左右两侧以及中央部位设置有开槽,两侧开槽卡接有竖转杆；两侧开槽与圆柱体相切,圆柱体周围安装有卡块,主横杆通过凹凸咬合槽与次横杆连接；主横杆、竖转杆和次横杆设置有GFRP筋,GFRP筋外部拥有至少15mm的混凝土保护层,卡块及插销均为玻璃纤维复合板。本发明由多根小尺寸杆件组装成大空方的空间体,可在工厂预制杆件后运输至相关海域现场进行组装投放,其运输及投放成本降低；具有更好的耐久性性能,能够增加人工鱼礁的使用寿命。本发明与现有技术相比,在成本、耐久性、灵活性以及集鱼能力等方面都有很大的优势。(The invention belongs to the technical field of artificial fish reefs and discloses a combined glass fiber reinforced concrete artificial fish reef, a control method and application thereof.A main cross bar is provided with slots at the left side, the right side and the central part, and vertical rotating rods are clamped and connected with the slots at the two sides; the grooves on the two sides are tangent to the cylinder, the clamping blocks are arranged around the cylinder, and the main cross rod is connected with the secondary cross rod through the concave-convex occlusion grooves; the main cross rod, the vertical rotating rod and the secondary cross rod are provided with GFRP ribs, the outer portions of the GFRP ribs are provided with at least 15mm concrete protective layers, and the clamping blocks and the bolts are all glass fiber composite plates. The large-space-square space body is assembled by a plurality of small-size rod pieces, and the rod pieces can be transported to relevant sea areas for assembly and release after being prefabricated in factories, so that the transportation and release cost is reduced; the artificial fish reef has better durability and can prolong the service life of the artificial fish reef. Compared with the prior art, the invention has great advantages in the aspects of cost, durability, flexibility, fish gathering capability and the like.)

1. The utility model provides a modular glass fiber muscle reinforced concrete artificial fish reef which characterized in that, modular glass fiber muscle reinforced concrete artificial fish reef is provided with:

a main cross bar;

the left side and the right side of the main cross rod are provided with grooves, and vertical rotating rods are clamped in the grooves;

the slotting is tangent with the cylinder, the clamping blocks are arranged around the cylinder, and the main cross rod is connected with the secondary cross rod through the concave-convex occlusion groove.

2. The combined glass fiber reinforced concrete artificial fish reef of claim 1, wherein the main cross bar, the vertical rotating bars and the secondary cross bar are provided with GFRP (glass fiber reinforced plastics) ribs, a concrete protective layer of at least 15mm is arranged outside the GFRP ribs, and the clamping blocks and the bolts are made of glass fiber composite plates.

3. The combined type glass fiber reinforced concrete artificial fish reef as claimed in claim 1, wherein a first clamping groove and a second clamping groove are arranged on two sides of the main cross bar, which are close to the groove, the first clamping groove and the second clamping groove are equal in size and same in shape and are positioned on the same horizontal line, and the second clamping groove is provided with a side opening towards the groove; the first clamping groove and the second clamping groove are embedded with bolts and are connected through environmental-friendly quick-setting adhesive in a chemical gluing mode.

4. The combination type glass fiber reinforced concrete artificial fish reef of claim 1, wherein the main cross bar and the secondary cross bar are the same in shape, and the distance between the groove part and the end part is at least 300 mm.

5. The combination type glass fiber reinforced concrete artificial fish reef of claim 1, wherein the slotted part of the vertical rotating rod is slotted and then is a cylinder.

6. The combination type glass fiber reinforced concrete artificial fish reef of claim 1, wherein the fixture block is a prism, and a quarter of the rear part of the inscribed cylinder is dug out of the center of the prism.

7. A control method of the combined glass fiber reinforced concrete artificial fish reef according to any one of claims 1-6, wherein the control method comprises the following steps: when the lower layer is assembled, the main transverse rods are used as splicing frameworks, and the vertical rotating rods are used as stress main bodies; firstly, fixing a main cross bar at the lower layer by using a bracket, wherein the surface A faces upwards, and the surface B faces an operator; then, erecting a vertical rotating rod to enable the surface E to face an operator, enabling the surface F to face the right and pushing the leftmost slotting part of the main cross rod to enable the cylinder to be tangent to the leftmost slotting part of the main cross rod, erecting a vertical rotating rod to enable the surface F to face the operator, enabling the surface G to face the right and pushing the rightmost slotting part of the main cross rod to enable the cylinder to be tangent to the rightmost slotting part of the main cross rod; after the vertical rotating rod is in place, the clamping blocks are arranged around the cylinder to form a prism; then, the main cross rods on the other side and the vertical rotating rods are assembled by repeating the operation symmetry, wherein the distance between the two main cross rods is particularly adjusted; then hoisting a first secondary cross rod of the lower layer to be arranged on the left side, enabling the C surface to be upward, enabling the B surface to be opposite to an operator, connecting the first secondary cross rod to the main cross rod according to the concave-convex occlusion characteristic, repeatedly installing a second secondary cross rod to be arranged on the right side, and basically assembling the lower layer;

the upper structure can be repeatedly operated or assembled flexibly according to the characteristics of the components and the form of the support, after 12 rod pieces are in place, the vertical rotating rod is rightly and closely arranged on the left side of an operator and rotates clockwise by 90 degrees, the vertical rotating rod is rightly and closely arranged on the right side of the operator and rotates anticlockwise by 90 degrees, the rest operation is performed by analogy, all the bolts are embedded into the first clamping groove and the second clamping groove after all the vertical rotating rods are in place, and the assembly of the whole novel combined GFRP (glass fiber reinforced plastics) bar reinforced concrete artificial fish reef is completed.

8. A method for improving the ecological environment of coastal waters, which comprises using the combined glass fiber reinforced concrete artificial fish reef of any one of claims 1 to 6.

9. A method for culturing fishes and shrimps, which is characterized in that the combined glass fiber reinforced concrete artificial fish reef in any one of claims 1 to 6 is used for creating conditions for gathering, inhabiting, growing and propagating the fishes and the shrimps.

10. A method for promoting the proliferation of aquatic resources, which is characterized in that the combined glass fiber reinforced concrete artificial fish reef used in the method for promoting the proliferation of the aquatic resources is used as an underwater barrier to limit the operation of fishing gear in a fishing-forbidden area and promote the proliferation of the aquatic resources.

Technical Field

The invention belongs to the technical field of artificial fish reefs, and particularly relates to a combined glass fiber reinforced concrete artificial fish reef, a control method and application.

Background

At present, China has a broad sea area and a plurality of island reefs, and has good natural sea area ecological environment conditions and abundant aquatic organism resources. However, with the great increase of population in China, the economic society develops at a high speed, and due to environmental pollution, engineering construction and excessive fishing, offshore fishery resources in China are seriously declined, the ecological environment of a water area is increasingly worsened, the desertification of the water area is increasingly obvious, and the sustainable utilization of marine biological resources in China is seriously influenced. Various artificial fish reef and marine ranch policies are issued by the state department and the Ministry of agriculture in sequence to protect the offshore sea environment of China, open up a new direction for fishery development and promote the sustainable development of marine resources.

The reinforced concrete cast-in-place artificial fish reef is relatively more applied at the present stage, and the concrete fish reef has better biological attachment effect because the biological attachment quantity of the concrete reef is higher than that of the iron reef, and the pollution of the concrete fish reef is relatively less compared with that of abandoned automobiles, ships, tires and the like. However, the cast-in-place reinforced concrete artificial fish reef is large in size, low in transportation efficiency and high in cost, and the reinforcing steel bars are seriously corroded in a seawater environment.

Through the above analysis, the problems and defects of the prior art are as follows: the cast-in-place reinforced concrete artificial fish reef is large in size, low in transportation efficiency and high in cost, and the reinforcing steel bars are seriously corroded in a seawater environment.

The difficulty in solving the above problems and defects is: firstly, the flow field effect of the artificial fish reef depends on the ratio of the height of the reef body to the water depth, the effect is not obvious when the ratio is small, and therefore the fish reef body is large; and the cast-in-place concrete artificial fish reef can not be disassembled and assembled, so that the large-size fish reef can only be transported integrally, the transportation efficiency is low, the transportation cost is high, and even more, the transportation cost of the artificial fish reef is higher than the material cost of the artificial fish reef. Secondly, the corrosion resistance of the reinforced concrete material in the marine environment is poor, and the corrosion resistance of the reinforced concrete material is generally enhanced by increasing the thickness of the concrete protective layer on the outer side of the steel bar in engineering, so that the section area of the concrete member is inevitably increased under the condition of not changing the size of the concrete member, thereby increasing the weight and the cost of the concrete member.

The significance of solving the problems and the defects is as follows: the large-size artificial fish reef is decomposed into the assembled rods, can be prefabricated in a factory, is transported to a destination and then is assembled and thrown into the sea, and is more convenient, saves the transportation cost and is safer; the glass fiber rib material is adopted, so that the corrosion resistance of the artificial fish reef is enhanced from the source, the glass fiber rib is light in weight and low in price, and the cost is further saved.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a combined glass fiber reinforced concrete artificial fish reef, a control method and application. On the basis of the Luban lock, the invention adopts a certain manufacturing and splicing method, and utilizes a concave-convex occlusion mode to splice 12 rod pieces into a three-dimensional structure, so that the transportation efficiency is greatly improved, and the combination and splicing are relatively convenient and simple; the glass fiber reinforcement is adopted to replace a steel bar as a main stress material, so that the durability of the marine environment is improved.

The invention is realized in such a way that the combined glass fiber reinforced concrete artificial fish reef is provided with a main cross bar; the left side and the right side of the main cross rod are provided with grooves, and vertical rotating rods are clamped in the grooves; the slotting is tangent with the cylinder, the clamping blocks are arranged around the cylinder, and the main cross rod is connected with the secondary cross rod through the concave-convex occlusion groove.

Furthermore, main horizontal pole, perpendicular bull stick and secondary horizontal pole are provided with the GFRP muscle, and GFRP muscle outside possess at least 15 mm's concrete cover, and fixture block and bolt are the glass fiber composite sheet.

Furthermore, the first clamping groove and the second clamping groove on the main cross rod are equal in size and same in shape and are positioned on the same horizontal line, and the second clamping groove is provided with a side opening towards the grooving part.

Furthermore, the main cross bar and the secondary cross bar are the same in shape, and the distance between the slotting part and the end part is at least 300 mm.

Furthermore, the slotting part of the vertical rotating rod is slotted and then is a cylinder.

Furthermore, the fixture block is a quarter of the part of the prism, the center of which is hollowed out to form the inscribed cylinder.

Furthermore, the two sides of the main cross rod, which are close to the grooving position, are provided with a first clamping groove and a second clamping groove, and the first clamping groove and the second clamping groove are embedded with bolts and are chemically glued through environment-friendly quick-setting adhesive.

Another object of the present invention is to provide a control method for the combined type glass fiber reinforced concrete artificial fish reef, which comprises: when the lower layer is assembled, the main transverse rods are used as splicing frameworks, and the vertical rotating rods are used as stress main bodies; firstly, fixing a main cross bar at the lower layer by using a bracket, wherein the surface A faces upwards, and the surface B faces an operator; then, erecting a vertical rotating rod to enable the surface E to face an operator, enabling the surface F to face the right and pushing the leftmost slotting part of the main cross rod to enable the cylinder to be tangent to the leftmost slotting part of the main cross rod, erecting a vertical rotating rod to enable the surface F to face the operator, enabling the surface G to face the right and pushing the rightmost slotting part of the main cross rod to enable the cylinder to be tangent to the rightmost slotting part of the main cross rod; after the vertical rotating rod is in place, the clamping blocks are arranged around the cylinder to form a prism; then, the main cross rods on the other side and the vertical rotating rods are assembled by repeating the operation symmetry, wherein the distance between the two main cross rods is particularly adjusted; then hoisting a first secondary cross rod of the lower layer to be arranged on the left side, enabling the C surface to be upward, enabling the B surface to be opposite to an operator, connecting the first secondary cross rod to the main cross rod according to the concave-convex occlusion characteristic, repeatedly installing a second secondary cross rod to be arranged on the right side, and basically assembling the lower layer;

the upper structure can be repeatedly operated or assembled flexibly according to the characteristics of the components and the form of the support, after 12 rod pieces are in place, the vertical rotating rod is rightly and closely arranged on the left side of an operator and rotates clockwise by 90 degrees, the vertical rotating rod is rightly and closely arranged on the right side of the operator and rotates anticlockwise by 90 degrees, the rest operation is performed by analogy, all the bolts are embedded into the first clamping groove and the second clamping groove after all the vertical rotating rods are in place, and the assembly of the whole novel combined GFRP (glass fiber reinforced plastics) bar reinforced concrete artificial fish reef is completed.

Another object of the present invention is to provide a method of improving the ecological environment of coastal waters using the fabricated glass fiber reinforced concrete artificial fish reef.

Another object of the present invention is to provide a method for culturing fish and shrimp, which uses the combined glass fiber reinforced concrete artificial fish reef to create conditions for gathering, inhabiting, growing and propagating fish and shrimp.

Another object of the present invention is to provide a method for promoting the proliferation of aquatic resources, which uses the combined type glass fiber reinforced concrete artificial fish reef as an underwater obstacle to restrict the operation of fishing gear in the fishing-forbidden area and promote the proliferation of aquatic resources.

By combining all the technical schemes, the invention has the advantages and positive effects that: according to the artificial fish reef, the main cross rod, the vertical rotating rods and the secondary cross rod are provided with GFRP (glass fiber reinforced plastics) ribs, the outer portions of the GFRP ribs are provided with concrete protective layers of at least 15mm, and the clamping blocks and the bolts are all glass fiber composite plates, so that the problem of corrosion of rib materials can be effectively solved, and the durability of the artificial fish reef is improved. The main cross bar and the secondary cross bar have the same shape, and the distance between the slotting part and the end part is at least 300mm, so that the assembly is convenient; meanwhile, the middle part of the vertical rotating rod is not provided with a groove, the corresponding grooved parts at the two ends are provided with grooves and then are cylinders, the diameter of the circular section of each cylinder is related to the groove depth of the main transverse rod and the secondary transverse rod, and the length of each cylinder is equal to the height of the section of the main transverse rod.

The fixture blocks are one fourth of the part of the cube block with the center hollowed out and the internally-cut cylinder, and are matched with the cylinders with the grooves on the two sides of the vertical rotating rod, so that 4 fixture blocks are combined together for use, and the fixture blocks are used for filling the gaps among the vertical rotating rod, the main cross rod and the secondary cross rod during assembly, so that the vertical rotating rod is better contacted with other members without influencing the rotation of the vertical rotating rod in the combination process. According to the invention, the first clamping groove and the second clamping groove are arranged on two sides of the main cross rod close to the slotting position, the bolts are embedded into the first clamping groove and the second clamping groove, and are chemically glued and connected through environment-friendly rapid gel so as to prevent the vertical rotating rod from being disadvantageously rotated after being assembled.

According to the invention, by combining the characteristics of the Luban lock mortise and tenon structure, 12 rod pieces are assembled into the 'cuboidal with feet' artificial fish reef only by mutual occlusion of concave and convex parts among the components, and the excessive 'feet' can prevent the main body of the artificial fish reef from sinking into sediment on the seabed. The components of the artificial fish reef are transported to the destination and then assembled and thrown into the sea area, the assembly operation is simple and rapid, maintenance and solidification are not needed, the space occupation in the transportation process can be effectively reduced, and the transportation cost and the throwing cost are saved; the novel combined type GFRP rib reinforced concrete artificial fish reef is very strong in flexibility, the height of the novel combined type GFRP rib reinforced concrete artificial fish reef can be changed by producing the vertical rotating rods with different lengths, and different grooving positions are selected for the vertical rotating rods, the main transverse rod and the secondary transverse rod to change the length of feet of the artificial fish reef and the opening ratio of the fish reef.

The novel combined GFRP (glass fiber reinforced plastic) bar reinforced concrete artificial fish reef is a large-empty space body formed by assembling a plurality of small-size rod pieces, can be transported to relevant sea areas for assembly and release after the rod pieces are prefabricated in factories, and reduces the transportation and release cost; compared with a reinforcing steel bar material, the GFRP rib has better durability, and can prolong the service life of the artificial fish reef; the 'feet' extending out of the fish reef base can be embedded into seabed sediment to enhance the stability; the modeling of the reef body is flexibly changed through the difference of the slotting positions of the rod pieces, so that different flow field effects are obtained; compared with the prior art, the method has great advantages in the aspects of cost, durability, flexibility, fish gathering capacity and the like.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural view of a combined glass fiber reinforced concrete artificial fish reef provided by an embodiment of the invention.

Fig. 2 is a schematic view of an installation structure of a combined type glass fiber reinforced concrete artificial fish reef provided by an embodiment of the invention.

Fig. 3 is a three-dimensional view of a main cross rod and a vertical rotating rod of the combined type glass fiber reinforced concrete artificial fish reef provided by the embodiment of the invention.

Fig. 4 is a schematic cross-sectional definition diagram of a main cross bar, a secondary cross bar and a vertical rotating bar of the combined type glass fiber reinforced concrete artificial fish reef provided by the embodiment of the invention.

Fig. 5 is an enlarged view of the combined type glass fiber reinforced concrete artificial fish reef at the position M according to the embodiment of the present invention.

Fig. 6 is a schematic diagram of a main cross bar reinforcement of the combined type glass fiber reinforced concrete artificial fish reef provided by the embodiment of the invention.

Fig. 7 is a schematic diagram of a vertical rotating rod reinforcement of the combined glass fiber reinforced concrete artificial fish reef provided by the embodiment of the invention.

Fig. 8 is a schematic structural diagram of a first combined type glass fiber reinforced concrete artificial fish reef development application model according to an embodiment of the invention.

Fig. 9 is a schematic structural diagram of a second combined type glass fiber reinforced concrete artificial fish reef expanding application model provided by the embodiment of the invention.

Fig. 10 is a schematic structural diagram of a third combined type glass fiber reinforced concrete artificial fish reef expanding application model provided by the embodiment of the invention.

Fig. 11 is a schematic structural diagram of a combined type glass fiber reinforced concrete artificial fish reef expanding application model four provided by the embodiment of the invention.

Fig. 12 is a stress cloud chart of the abaqus artificial simulated gravity load of the combined glass fiber reinforced concrete artificial fish reef provided by the embodiment of the invention.

Fig. 13 is a stress cloud chart of the abaqus simulation of the combined glass fiber reinforced concrete artificial fish reef according to the embodiment of the present invention when the artificial reef is impacted.

Fig. 14 is a force-time curve diagram of a unit node at the bottom of a vertical rotating rod extracted when the abaqus simulation of the combined type glass fiber reinforced concrete artificial fish reef provided by the embodiment of the invention is put into impact.

Fig. 15 is a simplified calculation schematic diagram of internal force of the combined type glass fiber reinforced concrete artificial fish reef, and a bending moment and shear table according to the embodiment of the invention.

Fig. 16 is a simplified calculation schematic diagram of the stability of the combined type glass fiber reinforced concrete artificial fish reef, and a slip-resistant safety coefficient and overturn-resistant safety coefficient table according to the embodiment of the invention.

In the figure: 1. a main cross bar; 2. a vertical rotating rod; 3. a cylinder at the slotting part of the vertical rotating rod; 4. a clamping block; 5. a secondary cross bar; 6. a bolt; 7. a first card slot; 8. and a second card slot.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides a combined glass fiber reinforced concrete artificial fish reef, a control method and application thereof, and the invention is described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, the novel combined type rib reinforced concrete artificial fish reef provided by the embodiment of the invention comprises: the device comprises a main cross rod 1, a vertical rotating rod 2, a clamping block 4, a secondary cross rod 5 and a bolt 6. The single artificial fish reef body consists of 12 rods (4 rods of a main cross rod 1, a vertical rotating rod 2 and a secondary cross rod 5 respectively), 32 clamping blocks 4 and 16 bolts 6, and the reef body is symmetrical in front and back, symmetrical in left and right and asymmetrical in up and down. All the rod pieces are composed of concrete and GFRP bars, the GFRP bars are provided with concrete protective layers of at least 15mm in outer portions, the clamping blocks and the bolts are made of corrosion-resistant glass fiber composite material plates, and the glass fiber composite material plates have certain shearing resistance.

The left side, the right side and the central part of the main cross rod 1 are provided with grooves, the grooves on the two sides are clamped with vertical rotating rods 2, the grooves are tangent to a cylinder 3 at the groove part of the vertical rotating rods, and clamping blocks 4 are arranged around the cylinder 3 at the groove part of the vertical rotating rods; the main cross rod 1 is connected with the secondary cross rod 5 through a concave-convex occlusion groove; a first clamping groove 7 and a second clamping groove 8 are formed in the groove, and a bolt 6 is embedded into the first clamping groove 7 and the second clamping groove 8.

The technical solution of the present invention is further described with reference to the following specific examples.

The main cross bar 1 is formed by cutting a prism, is symmetrical left and right, and is described by taking the left side as an example. The length of the main cross bar 1 is L₁B width and h height, wherein the lengths of the parts a and c are not less than 300mm and L₁10, the main cross bar 1 and the secondary cross bar 5 have the same size, and the length and the width are the same for the convenience of assembly and description; the first clamping groove 7 is arranged in the center of the rightmost side of the part a, the length and width of the first clamping groove are a/15, and the depth of the first clamping groove is h/5; the second card slot 8 is arranged in the center of the leftmost side of the part c, and has the same size as the first card slot 7, but the left side of the second card slot 8 is opened by cutting the part b. The secondary cross bar 5 has the same shape as the main cross bar 1, except that the parts a and c of the secondary cross bar 5 are not provided with clamping grooves. The first clamping groove 7 and the second clamping groove 8 on the main cross rod 1 are equal in size and same in shape and are positioned on the same horizontal line, and the difference is that the second clamping groove 8 is provided with a side opening towards the grooving part.

The vertical rotating rod 2 is formed by cutting a prism, is bilaterally symmetrical, has the same section as the main cross rod 1, only the part b is grooved, and the lengths of the part a and the part c are not less than 300mm and L₂And 10, the diameter 2R of the circular section of the cylinder 3 is related to the grooving depth of the main cross rod and the secondary cross rod, and the length of the circular section is equal to the height h of the section of the main cross rod.

The main cross bar 1 and the secondary cross bar 5 are the same in reinforcing bar, and the GFRP bar is provided with a concrete protective layer of at least 15mm outside, and the main cross bar 1 is taken as an example for description. When the cross section is full, GFRP ribs No. 1, 2, 3, 4, 6, 7 and 8 play a role; 1/2 section, GFRP ribs No. 2, 3, 4, 5, 6 play a role; 1/4 section, GFRP ribs No. 4, 5, 6, 7 function; wherein only GFRP ribs No. 4, 6 and 7 are communicated, and the other GFRP ribs are arranged in a sectional manner; 1. the No. 8 GFRP rib is cut off at the parts b and d, the No. 2 GFRP rib and the No. 3 GFRP rib are cut off at the part b/2 close to the section c, and the No. 5 GFRP rib extends into the part a by no less than 100 mm.

The main cross rod 1 and the secondary cross rod 5 are the same in shape, the distance between the slotting part and the end part is at least 300mm, the slotting part of the vertical rotating rod 2 is slotted to form a cylinder 3, the diameter of the circular section of the cylinder is related to the slotting depth of the main cross rod and the secondary cross rod, and the length of the cylinder is equal to the height of the section of the main cross rod 1.

The GFRP rib of the vertical rotating rod 2 is provided with a concrete protective layer with the thickness of at least 15mm, and GFRP ribs No. 1, 2 and 3 play a role in the whole section; when the section is round, the No. 2 GFRP rib plays a role; wherein only the GFRP rib No. 2 is communicated, and the other GFRP ribs No. 1 and No. 3 are arranged in a sectional mode and are cut off at the part b. The inner side of the part e of the vertical rotating rod can be provided with standard embedded parts according to conditions, and bolts are adopted to install non-bearing auxiliary plates in different forms to change the opening ratio of the artificial fish reef so as to obtain better flow field effect and fish collecting effect, and 4 combined type glass fiber reinforced concrete artificial fish reef expansion application models are provided as shown in figures 8-11.

The fixture block 4 is a quarter of the part of the prism, the center of which is hollowed out to form an inscribed cylinder, and is used for filling the gap between the vertical rotating rod 2 and the main transverse rod 1 and the secondary transverse rod 5 during assembly, so that the vertical rotating rod 2 can be in better contact with other components without influencing the rotation of the combination process. The clamping block 4 is made of corrosion-resistant glass fiber composite materials, and is not functional from the mechanical point of view, because the cylinder 3 is only tangent to four sides of the slotted parts on the two sides of the main cross bar and the secondary cross bar theoretically, and is not in mechanical contact with the clamping block 4, the existence of the clamping block 4 is beneficial to relieving construction errors (the clamping block cannot be completely tangent) and strengthening the integrity of a connection node.

The bolt 6 is made of corrosion-resistant glass fiber composite materials, corresponds to a first clamping groove 7 and a second clamping groove 8 on the main cross rod 1, is in a right-section prism shape, has a side length of a/15 and a length of h/3, and can be made into a corresponding geometric body according to design requirements. The bolt 6 is connected with inlaying of first draw-in groove 7 and second draw-in groove 8, and its cross-section needs the processing of polishing to increase cross-section frictional force and uses the fast gel of environmental protection to carry out the chemistry veneer and connect. Theoretically, the vertical rotating rod 2 can rotate at any angle without the bolt 6; in practical situations, after the 12 rod pieces are assembled, small dislocation among the rod pieces is caused under the action of gravity and frictional force and errors caused by manufacturing, installation and the like, so that the vertical rotating rod 2 is difficult to rotate, and the existence of the bolt 6 further reduces the probability of unfavorable rotation of the vertical rotating rod 2.

The working principle of the invention is as follows: when the lower layer is assembled, the main transverse rods are used as splicing frameworks, and the vertical rotating rods are used as stress main bodies; firstly, fixing a main cross bar at the lower layer by using a bracket, wherein the surface A faces upwards, and the surface B faces an operator; then, erecting a vertical rotating rod to enable the surface E to face an operator, enabling the surface F to face the right and pushing the leftmost slotting part of the main cross rod to enable the cylinder to be tangent to the leftmost slotting part of the main cross rod, erecting a vertical rotating rod to enable the surface F to face the operator, enabling the surface G to face the right and pushing the rightmost slotting part of the main cross rod to enable the cylinder to be tangent to the rightmost slotting part of the main cross rod; after the vertical rotating rod is in place, the clamping blocks are arranged around the cylinder to form a prism; then, the main cross rods on the other side and the vertical rotating rods are assembled by repeating the operation symmetry, wherein the distance between the two main cross rods is particularly adjusted; then hoisting a first secondary cross rod of the lower layer to be arranged on the left side, enabling the C surface to be upward, enabling the B surface to be opposite to an operator, connecting the first secondary cross rod to the main cross rod according to the concave-convex occlusion characteristic, repeatedly installing a second secondary cross rod to be arranged on the right side, and basically assembling the lower layer; the upper structure can be repeatedly operated or assembled flexibly according to the characteristics of the components and the form of the support, after 12 rod pieces are in place, the vertical rotating rod is rightly and closely arranged on the left side of an operator and rotates clockwise by 90 degrees, the vertical rotating rod is rightly and closely arranged on the right side of the operator and rotates anticlockwise by 90 degrees, the rest operation is performed by analogy, all the bolts are embedded into the first clamping groove and the second clamping groove after all the vertical rotating rods are in place, and the assembly of the whole novel combined GFRP (glass fiber reinforced plastics) bar reinforced concrete artificial fish reef is completed.

In order to further optimize the scheme, the combined glass fiber reinforced concrete artificial fish reef is simulated by using abaqus software, so that the stress characteristics of the integral model of the combined artificial fish reef under the gravity load and the 1/4 model under the landing impact load are obtained, stress clouds are shown in fig. 12 and 13, and the curve of the relationship between the impact force at the bottom and the time is shown in fig. 14.

The weak position of the artificial fish reef is strengthened during the design of the cross section, and the requirements of the artificial fish reef on the stability such as impact resistance, slippage resistance, overturn resistance and the like are met. The internal force analysis of the artificial fish reef adopts plane simplification, and the distribution of bending moment M and shearing force V under the condition of different overhang ratios k is calculated, as shown in fig. 15; the anti-slip and anti-overturning safety factors for different overhang ratios k were calculated as shown in fig. 16.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.