Combined glass fiber reinforced concrete artificial reef, control method and application

Abstract

The present application belongs to the technical field of artificial reefs, and discloses a combined glass fiber reinforced concrete artificial reef, a control method and application. The main horizontal rod is provided with grooves on the left and right sides and a central part, and vertical rotating rods are clamped in the grooves on the two sides. The grooves on the two sides are tangent to the cylinder, and clamping blocks are installed around the cylinder. The main horizontal rod is connected with the secondary horizontal rod through concave-convex engagement grooves. The main horizontal rod, the vertical rotating rod and the secondary horizontal rod are provided with GFRP bars, and the GFRP bars have a concrete protective layer of at least 15 mm outside. The clamping blocks and the bolts are both glass fiber composite boards. The present application is composed of a plurality of small-size rod pieces to form a large hollow square space body. After the rod pieces are prefabricated in the factory, they can be transported to the relevant sea area for on-site assembly and launching, and the transportation and launching costs are reduced. The present application has better durability and can increase the service life of the artificial reef. Compared with the prior art, the present application has great advantages in cost, durability, flexibility and fish collecting capacity.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of artificial reefs, and particularly relates to a combined glass fiber reinforced concrete artificial reef, a control method and application. BACKGROUND

[0002] At present, China has vast sea areas, numerous islands and reefs, good natural sea ecological environment conditions and rich aquatic biological resources. However, with the substantial growth of China's population and the rapid development of economy and society, environmental pollution, engineering construction and overfishing have caused the decline of China's offshore fishery resources, affecting the sustainable utilization of China's marine biological resources.

[0003] At present, the relatively more commonly used is a cast-in-place reinforced concrete artificial reef. The concrete reef has a higher amount of attached organisms than the iron reef, has a good biological attachment effect, and has relatively less pollution than abandoned cars, ships and tires. However, the cast-in-place reinforced concrete artificial reef has a large size, low transportation efficiency and high cost, and the steel bars are severely corroded in the seawater environment.

[0004] Through the above analysis, the existing problems and defects of the prior art are that the cast-in-place reinforced concrete artificial reef has a large size, low transportation efficiency and high cost, and the steel bars are severely corroded in the seawater environment.

[0005] The difficulty of solving the above problems and defects is that: first, the flow field effect of the artificial reef depends on the ratio of the reef height to the water depth, and the effect is not obvious when the ratio is small, so the size of the artificial reef is large; and the cast-in-place concrete artificial reef cannot be disassembled, so the large-size artificial reef can only be transported as a whole, which has low transportation efficiency and high transportation cost. Second, the corrosion resistance of the reinforced concrete material in the marine environment is poor, and the method of increasing the thickness of the concrete protective layer on the outside of the steel bar is generally used to enhance the corrosion resistance. In the case of not changing the size, the cross-sectional area of the concrete member will inevitably be increased, resulting in an increase in weight and cost.

[0006] The significance of solving the above problems and defects is that the large artificial reef is divided into assemblable rod members, which can be prefabricated in a factory and then transported to the destination for assembly and put into the sea, which is more convenient, saves transportation cost and is safer; the use of glass fiber reinforced plastic enhances the corrosion resistance of the artificial reef from the source, and the glass fiber reinforced plastic is light in weight and low in price, which further saves the cost. SUMMARY

[0007] In order to solve the problems existing in the prior art, the application provides a combined glass fiber reinforced concrete artificial fish reef, a control method and application. The application is based on the Luban lock, adopts a certain manufacturing and splicing method, uses the concave-convex occlusion mode to assemble 12 rod pieces into a three-dimensional structure, greatly improves the transportation efficiency, and is relatively convenient and simple to assemble.

[0008] The application is implemented as follows: a combined glass fiber reinforced concrete artificial fish reef is provided with a main horizontal rod; the left and right sides of the main horizontal rod are provided with a slot, and the slot is clamped with a vertical rotating rod; the slot is tangent to a cylinder, and a clamping block is installed around the cylinder; the main horizontal rod is connected with a secondary horizontal rod through a concave-convex occlusion slot.

[0009] Further, the main horizontal rod, the vertical rotating rod and the secondary horizontal rod are provided with GFRP bars, the GFRP bars have a concrete protective layer of at least 15 mm outside, and the clamping block and the bolt are both glass fiber composite boards.

[0010] Further, the first clamping slot and the second clamping slot on the main horizontal rod are equal in size and same in shape, are on the same horizontal line, and the second clamping slot has a side opening towards the slot part.

[0011] Further, the main horizontal rod and the secondary horizontal rod are same in shape, and the distance from the slot part to the end is at least 300 mm.

[0012] Further, the vertical rotating rod is a cylinder after the slot part is slotted.

[0013] Further, the clamping block is a prism, and a quarter of the part after the inner tangent cylinder is removed from the center of the prism.

[0014] Further, the two sides of the main horizontal rod near the slot part are provided with a first clamping slot and a second clamping slot, the first clamping slot and the second clamping slot are embedded with a bolt, and are chemically glued and connected through an environment-friendly rapid-setting gel.

[0015] Another object of the present application is to provide a control method of the combined glass fiber reinforced concrete artificial fish reef, which comprises: when assembling the lower layer, taking the main horizontal rod as the splicing framework and the vertical rotating rod as the force main body; first, fixing a main horizontal rod of the lower layer by using a support, with the A face upward and the B face facing the operator; then, standing up a vertical rotating rod with the E face facing the operator and the F face right and pushing it into the leftmost slotted part of the main horizontal rod, so that the cylinder is tangent to the leftmost slotted part of the main horizontal rod; then, standing up another vertical rotating rod with the F face facing the operator and the G face right and pushing it into the rightmost slotted part of the main horizontal rod, so that the cylinder is tangent to the rightmost slotted part of the main horizontal rod; after the vertical rotating rods are in place, installing the clamping blocks around the cylinders to form a prism; then, repeating the above operation to symmetrically assemble the other main horizontal rod and vertical rotating rod, with special attention paid to adjusting the distance between the two main horizontal rods; next, hoisting the first secondary horizontal rod of the lower layer to the left side with the C face upward and the B face facing the operator, and connecting it to the main horizontal rod according to the concave-convex engagement feature; repeating the above operation to install the second secondary horizontal rod on the right side; and thus the lower layer is basically assembled.

[0016] The upper layer structure can be repeatedly operated or flexibly assembled according to the component features and support forms; after the 12 rod members are in place, rotating the vertical rotating rod opposite to and close to the left side of the operator clockwise by 90 degrees, rotating the vertical rotating rod opposite to and close to the right side of the operator counterclockwise by 90 degrees, and performing the remaining operations in the same way; after all the vertical rotating rods are in place, embedding all the bolts into the first and second clamping slots; and thus the assembly of the new combined GFRP reinforced concrete artificial fish reef is completed.

[0017] Another object of the present application is to provide a method for improving the ecological environment of coastal waters, which uses the combined glass fiber reinforced concrete artificial fish reef.

[0018] Another object of the present application is to provide a method for breeding fish and shrimps, which uses the combined glass fiber reinforced concrete artificial fish reef to create conditions for the aggregation, habitation, growth and reproduction of fish and shrimps.

[0019] Another object of the present application is to provide a method for promoting the propagation of aquatic resources, which uses the combined glass fiber reinforced concrete artificial fish reef as an underwater obstacle to limit the operation of fishing gear in the fishing prohibited area and promote the propagation of aquatic resources.

[0020] In combination with all the technical solutions above, the application has the advantages and positive effects that the main horizontal rod, the vertical rotating rod and the secondary horizontal rod are provided with GFRP bars, the GFRP bars have a concrete protection layer of at least 15mm outside, the clamping blocks and the bolts are all made of glass fiber composite board, the problem of bar corrosion can be effectively avoided, and the durability of the artificial reef is improved. In the application, the main horizontal rod and the secondary horizontal rod have the same shape, and the distance between the slotted parts and the end is at least 300mm, so that the assembly is facilitated; meanwhile, the middle part of the vertical rotating rod is not slotted, and the corresponding slotted parts at both ends are slotted into cylinders, the diameter of the circular section is related to the slotted depth of the main horizontal rod and the secondary horizontal rod, and the length is equal to the cross section height of the main horizontal rod.

[0021] In the application, the clamping block is a quarter of the part after cutting a circular cylinder in the center of a cubic block, and it is matched with the cylinder after the slotted parts at both sides of the vertical rotating rod are slotted, so that four clamping blocks are combined and used to fill the gap between the vertical rotating rod and the main horizontal rod and the secondary horizontal rod when assembled, so that the vertical rotating rod and other components are in better contact without affecting the rotation during the assembly process. In the application, the first clamping groove and the second clamping groove are arranged on both sides of the main horizontal rod near the slotted position, the first clamping groove and the second clamping groove are embedded with the bolts, and the bolts are chemically glued and connected by the environment-friendly quick-setting gel, so as to prevent the adverse rotation of the vertical rotating rod after the assembly is completed.

[0022] In the application, by combining the characteristics of the Luban lock mortise and tenon structure, only the concave-convex parts of the components are mutually engaged to assemble 12 rod members into a "footed cubic" artificial reef, and the extra "feet" can prevent the main body of the artificial reef from sinking into the mud on the seabed. The components of the artificial reef are transported to the destination for assembly and then put into the sea area, the assembly operation is simple and fast, no curing is needed, the space occupation during transportation can be effectively reduced, the transportation cost and the putting cost are saved, and the flexibility is very strong. Different lengths of vertical rotating rods can be produced to change the height of the new combined GFRP bar reinforced concrete artificial reef and the length of the "feet" of the artificial reef and the opening ratio of the artificial reef by selecting different slotted positions of the vertical rotating rod, the main horizontal rod and the secondary horizontal rod.

[0023] The new combined GFRP bar reinforced concrete artificial reef of the application is assembled from a plurality of small size rod members into a large empty square space body, which can be pre-fabricated in a factory and then transported to the relevant sea area for assembly and putting, so that the transportation and putting cost is reduced; compared with the steel material, the GFRP bar has better durability, which can increase the service life of the artificial reef; the "feet" of the reef base can be embedded into the seabed mud to enhance the stability; the shape of the reef body can be flexibly changed by the different slotted positions of the rod members, so that different flow field effects are obtained; compared with the prior art, the application has great advantages in cost, durability, flexibility and fish collecting capacity. BRIEF DESCRIPTION OF DRAWINGS

[0024] 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 introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0025] Figure 1 is a schematic diagram of a combined glass fiber reinforced concrete artificial fish reef structure provided by the embodiments of the present application.

[0026] Figure 2 is a schematic diagram of a combined glass fiber reinforced concrete artificial fish reef installation structure provided by the embodiments of the present application.

[0027] Figure 3 is a three-view diagram of a main cross bar and a vertical rotating bar of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0028] Figure 4 is a schematic diagram of cross section definition of a main cross bar, a secondary cross bar and a vertical rotating bar of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0029] Figure 5 is an enlarged view of a position M of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0030] Figure 6 is a schematic diagram of main cross bar reinforcement of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0031] Figure 7 is a schematic diagram of vertical rotating bar reinforcement of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0032] Figure 8 is a schematic diagram of a structure of an expanded application model one of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0033] Figure 9 is a schematic diagram of a structure of an expanded application model two of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0034] Figure 10 is a schematic diagram of a structure of an expanded application model three of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0035] Figure 11 is a schematic diagram of a structure of an expanded application model four of a combined glass fiber reinforced concrete artificial fish reef provided by the embodiments of the present application.

[0036] Figure 12 is the stress nephogram of the combined glass fiber reinforced concrete artificial fish reef under the abaqus simulation of the gravity load provided by the embodiment of the present application.

[0037] Figure 13 is the stress nephogram of the combined glass fiber reinforced concrete artificial fish reef under the abaqus simulation of the impact when being put into water provided by the embodiment of the present application.

[0038] Figure 14 is the force-time curve diagram of the vertical rotating rod bottom unit node extracted from the abaqus simulation of the impact when being put into water provided by the embodiment of the present application.

[0039] Figure 15 is the internal force simplified calculation schematic diagram and the bending moment and shear force table of the combined glass fiber reinforced concrete artificial fish reef provided by the embodiment of the present application.

[0040] Figure 16 is the stability simplified calculation schematic diagram and the anti-sliding safety factor and anti-overturning safety factor table of the combined glass fiber reinforced concrete artificial fish reef provided by the embodiment of the present application.

[0041] In the figure: 1, main cross rod; 2, vertical rotating rod; 3, cylindrical body of the vertical rotating rod slot part; 4, clamping block; 5, secondary cross rod; 6, bolt; 7, first clamping groove; 8, second clamping groove. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0043] In view of the problems existing in the prior art, the present application provides a combined glass fiber reinforced concrete artificial fish reef, a control method and application, which will be described in detail below in combination with the drawings.

[0044] As shown in Figures 1-7 The novel combined reinforced concrete artificial fish reef provided by the embodiment of the present application comprises: a main cross rod 1, a vertical rotating rod 2, a clamping block 4, a secondary cross rod 5 and a bolt 6. A single artificial fish reef body is composed of 12 rods (4 rods of three kinds of rod members, i.e. the main cross rod 1, the vertical rotating rod 2 and the secondary cross rod 5), 32 clamping blocks 4 and 16 bolts 6. The reef body is symmetrical in front and back, left and right, and asymmetrical in up and down. All rod members are composed of concrete and GFRP bars. The GFRP bars have a concrete protective layer of at least 15 mm outside. The clamping block and the bolt are made of corrosion-resistant glass fiber composite material plate and have a certain shear resistance.

[0045] The main horizontal rod 1 is provided with a slot on both sides and a central part, the vertical rotating rod 2 is clamped on both sides of the slot, the slot is tangent to the cylinder 3, and the clamping block 4 is installed around the cylinder 3; the main horizontal rod 1 is connected with the secondary horizontal rod 5 through the concave-convex engagement slot; the first clamping groove 7 and the second clamping groove 8 are arranged in the slot, and the first clamping groove 7 and the second clamping groove 8 are embedded with the bolt 6.

[0046] The technical solutions of the application will be further described below in combination with specific embodiments.

[0047] The main horizontal rod 1 is a prism cut, which is symmetrical on both sides, and the left side is taken as an example for description. The length of the main horizontal rod 1 is L1, the width is b, and the height is h, wherein the lengths of the a and c parts are not less than 300 mm and L1 / 10, the sizes of the main horizontal rod 1 and the secondary horizontal rod 5 are the same, and the length and width are also the same for the convenience of assembly and description; the first clamping groove 7 is arranged at the rightmost central part of the a part, and the length and width thereof are a / 15, and the depth is h / 5; the second clamping groove 8 is arranged at the leftmost central part of the c part, and the size thereof is the same as that of the first clamping groove 7, but the left side of the second clamping groove 8 is opened due to the cutting of the b part. The secondary horizontal rod 5 is the same in shape as the main horizontal rod 1, except that the a and c parts of the secondary horizontal rod 5 are not provided with clamping grooves. The first clamping groove 7 and the second clamping groove 8 on the main horizontal rod 1 are equal in size and the same in shape, and are on the same horizontal line, and the difference lies in that the second clamping groove 8 has a side opening towards the slot part.

[0048] The vertical rotating rod 2 is a prism cut, which is symmetrical on both sides, and the cross section is the same as that of the main horizontal rod 1, only the b part is slotted, and the lengths of the a and c parts are not less than 300 mm and L2 / 10, the diameter 2R of the circular cross section of the cylinder 3 is related to the slot depth of the main and secondary horizontal rods, and the length is equal to the cross section height h of the main horizontal rod.

[0049] The reinforcement of the main horizontal rod 1 and the secondary horizontal rod 5 is the same, and the GFRP reinforcement has a concrete protection layer of at least 15 mm outside, and the main horizontal rod 1 is taken as an example for description. In the full cross section, the No. 1, 2, 3, 4, 6, 7 and 8 GFRP reinforcements are in action; in the 1 / 2 cross section, the No. 2, 3, 4, 5 and 6 GFRP reinforcements are in action; in the 1 / 4 cross section, the No. 4, 5, 6 and 7 GFRP reinforcements are in action; wherein only the No. 4, 6 and 7 GFRP reinforcements are connected, and the rest of the GFRP reinforcements are arranged in sections; the No. 1 and 8 GFRP reinforcements are cut off at the b and d parts, the No. 2 and 3 GFRP reinforcements are cut off at the b / 2 part close to the c section and the d part, and the No. 5 GFRP reinforcement extends into the a part by not less than 100 mm.

[0050] The main horizontal rod 1 and the secondary horizontal rod 5 are the same in shape, the slot part is at least 300 mm away from the end, and the slot part of the vertical rotating rod 2 is a cylinder 3 after being slotted, the diameter of the circular cross section thereof is related to the slot depth of the main and secondary horizontal rods, and the length is equal to the cross section height of the main horizontal rod 1.

[0051] The GFRP bars outside the vertical rotating pole 2 have a concrete protective layer of at least 15 mm, and the full section of the GFRP bars 1, 2 and 3 is used; the circular section of the GFRP bars 2 is used; only the GFRP bars 2 are connected, and the GFRP bars 1 and 3 are arranged in sections and are truncated at part b. The inside of part e of the vertical rotating pole can be provided with standard embedded parts according to the situation, and different forms of non-load-bearing auxiliary plates are installed by bolts to change the opening ratio of the artificial reef to obtain better flow field effect and fish gathering effect, such as Figures 8-11 , four combined glass fiber reinforced concrete artificial reef application models are given.

[0052] The clamping block 4 is a quarter of the part of the prism after the inner tangent cylinder is removed, which is used to fill the gap between the vertical rotating pole 2 and the main cross pole 1 and the secondary cross pole 5 during assembly, so that the vertical rotating pole 2 and other components are in better contact without affecting the rotation during assembly. The clamping block 4 is made of corrosion-resistant glass fiber composite material, which is not effective from the mechanical point of view, because the cylinder 3 is only tangent to the four sides of the main and secondary cross poles in theory, and there is no mechanical contact with the clamping block 4, but the existence of the clamping block 4 is beneficial to alleviate the construction error (cannot be completely tangent) and strengthen the integrity of the connection node.

[0053] The bolt 6 is made of corrosion-resistant glass fiber composite material, which corresponds to the clamping groove 7 and 8 on the main cross pole, which is a right prism in this case, with a cross-sectional edge length of a / 15 and a length of h / 3, but can be made into corresponding geometric bodies according to design needs. The bolt 6 is inlaid connection with the first clamping groove 7 and the second clamping groove 8, and the cross section needs to be polished to increase the cross-sectional friction and use environmentally friendly quick-setting glue for chemical glue connection. In theory, the vertical rotating pole 2 can rotate at any angle without the bolt 6; in actual situation, after the assembly of 12 rods is completed, under the action of gravity and friction force and the error caused by manufacturing, installation and other factors, the small displacement between the rods will make it difficult for the vertical rotating pole 2 to rotate again, and the existence of the bolt 6 further reduces the probability of adverse rotation of the vertical rotating pole 2.

[0054] The working principle of the present application is as follows: when assembling the lower layer, the main horizontal rod is used as the assembling framework, and the vertical rotating rod is used as the force main body; first, one main horizontal rod of the lower layer is fixed by using the support, the A face is upward, and the B face is opposite to the operator; then, one vertical rotating rod is erected, the E face is opposite to the operator, the F face is rightward and is pushed into the leftmost slotted part of the main horizontal rod, so that the cylinder is tangent to the leftmost slotted part of the main horizontal rod, and then another vertical rotating rod is erected, the F face is opposite to the operator, and the G face is rightward and is pushed into the rightmost slotted part of the main horizontal rod, so that the cylinder is tangent to the rightmost slotted part of the main horizontal rod; after the vertical rotating rod is in place, the clamping block is installed around the cylinder to form a prism; then, the above operation is repeated to symmetrically assemble the other main horizontal rod and the vertical rotating rod, and special attention is paid to adjusting the distance between the two main horizontal rods; next, the first secondary horizontal rod of the lower layer is hoisted and placed on the left side, the C face is upward, and the B face is opposite to the operator, and the secondary horizontal rod is connected to the main horizontal rod according to the characteristics of the concave-convex engagement, the above operation is repeated to place the second secondary horizontal rod on the right side, and thus the lower layer is basically assembled; the upper layer structure can be repeatedly operated or flexibly assembled according to the characteristics of the components and the support forms, after the 12 rod members are in place, the vertical rotating rod opposite to and close to the left side of the operator is rotated clockwise by 90 degrees, the vertical rotating rod opposite to and close to the right side of the operator is rotated counterclockwise by 90 degrees, and the remaining operations are performed in the same way, after all the vertical rotating rods are in place, all the bolts are embedded into the first clamping groove and the second clamping groove, and thus the assembly of the new combined GFRP reinforced concrete artificial fish reef is completed.

[0055] In order to further optimize the scheme, the abaqus software is used to simulate the combined glass fiber reinforced concrete artificial fish reef, and the stress characteristics of the overall model of the combined artificial fish reef under the gravity load and the 1 / 4 model under the landing impact load are obtained, the stress nephogram is as shown in Figure 12 、 Figure 13 , and the impact force-time curve of the bottom is as shown in Figure 14 .

[0056] The weak position is strengthened during the cross section design, and the requirements of the stability of the artificial fish reef in terms of impact resistance, slip resistance and overturning resistance are met. The internal force analysis of the artificial fish reef in this paper uses plane simplification, the distribution of the bending moment M and the shear force V under different overhanging ratios k is calculated, as shown in Figure 15 , and the slip resistance and overturning resistance safety factors under different overhanging ratios k are calculated, as shown in Figure 16 .

[0057] In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0058] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any modification, equivalent replacement and improvement made by any person skilled in the art within the technical range disclosed by the present application, as long as it is within the spirit and principles of the present application, should be covered within the protection scope of the present application.

Claims

1. A combined glass fiber reinforced concrete artificial reef, characterized in that: The combined glass fiber reinforced concrete artificial fish reef is provided with: A main crossbar (1), a vertical rotation rod (2), a clamping block (4), a secondary crossbar (5) and a latch (6); the vertical rotation rod (2) is provided with a cylinder (3); and the main crossbar is provided with a first clamping slot (7) and a second clamping slot (8); The main crossbar (1) is cut from a prism and is symmetrical about the center point in the longitudinal direction. The main crossbar (1) is L1 in length, b in width and h in height. The width and height are equal and not less than L1 / 10. From left to right along the length direction of the prism, it is divided into block a, block b, block c, block d, block c, block b and block a. The lengths of the a, b and c blocks are all h, and the length of the d block is L1-6h. Taking the left side of the center point of the main crossbar as an example, the b and d blocks are formed by cutting and slotting the prism; the outer surface marked with the first card groove (7) and the second card groove (8) is the A surface; the outer surface adjacent to the A surface, facing the outside of the fish reef, with the groove formed by cutting the b block is the B surface, and the R and Y surfaces are opposite to the A and B surfaces respectively; The block is divided into a left half and a right half along the length direction of the prism with its own middle cross section as the boundary. The cross section of the left half of the block b is high h and its width is 1 / 2 of the width of the main cross bar. The cross section of the right half of the block b is high h / 2 and its width is 1 / 2 of the width of the main cross bar, thereby forming a slot in the block b area. The first slot (7) is set on the rightmost side of the block a and is at a distance of h / 4 from the Y surface. The length and width of the first slot (7) are a / 15 and the depth is h / 5. The second slot (8) is set on the leftmost side of the block c and is at a distance of h / 4 from the Y surface. The length, width and height of the second slot are the same as those of the first slot (7). The second slot (8) is set as an opening near the edge of the block b. The cross section of the block d is high h / 2 and its width is 1 / 2 of the width of the main cross bar, thereby forming a slot in the block d area. The secondary crossbar (5) has the same structure as the main crossbar (1), and corresponds to the a block, b block, c block, d block, c block, b block, and a block on the main crossbar. The secondary crossbar (5) is divided into the first a block, the first b block, the first c block, the first d block, the first c block, the first b block, and the first a block from left to right along the length direction of the prism. The first a block and the first c block of the secondary crossbar (5) are not provided with a slot. The vertical rotation rod (2) is cut from a prism and is symmetrical about the center point in the longitudinal direction. The length of the vertical rotation rod (2) is L2, and its cross section is the same as that of the main cross bar (1). The vertical rotation rod (2) is divided into the second a block, the second b block, the e block, the second b block, and the second a block in sequence from left to right along the length direction of the prism, wherein the lengths of the second a block and the second b block are both h, and the length of the e block is L2-4h. The second b block is formed after the prism is cut and grooved, and the grooved part is in the shape of a cylinder, which is recorded as a cylinder (3). The cylinder (3) is circumscribed with the two outer surfaces of the prism. The diameter of the circular cross section of the cylinder (3) is 2R, which is equal to the cutting groove depth of the main cross bar (1) and the secondary cross bar (5). The length of the cylinder (3) is equal to the height h of the cross section of the main cross bar. The main crossbar (1) and the secondary crossbar (5) have the same reinforcement, and the GFRP reinforcement has a concrete protective layer of at least 15 mm on the outside. The main crossbar (1) and the secondary crossbar (5) have the same shape, and the slotted portion is at least 300 mm away from the end. The vertical rotation rod (2) cuts the slotted portion to form a cylinder (3) after slotting, and the diameter of its circular cross section is the same as the slot depth of the main and secondary crossbars, and its length is equal to the cross section height of the main crossbar (1); The GFRP reinforcement of the vertical turning rod (2) has a concrete protective layer of at least 15 mm on the outside. The inside of the block e of the vertical turning rod can be provided with standard embedded parts according to the situation. Different forms of non-load-bearing auxiliary plates are installed by bolts to change the opening ratio of the artificial reef, so as to obtain better flow field effect and fish gathering effect. The clamping block (4) is a quarter of the portion after the inscribed cylinder (3) is dug out from the center of the prism, and is used to fill the gap between the vertical rotation rod (2) and the main cross rod (1) and the secondary cross rod (5) during assembly, so that the vertical rotation rod (2) can better contact with other components without affecting the rotation of the assembly process; the clamping block (4) is made of corrosion-resistant glass fiber composite material, and the presence of the clamping block (4) is conducive to alleviating construction errors and strengthening the integrity of the connection node; The latch (6) is made of a corrosion-resistant glass fiber composite material, and corresponds to the first slot (7) and the second slot (8) on the main crossbar (1). Here, it is a regular cross-section prism with a cross-section side length of a / 15 and a length of h / 3. The latch (6) is inlaid and connected with the first slot (7) and the second slot (8). The cross section needs to be polished to increase the cross-section friction and chemically bonded using environmentally friendly speed gel.

2. A control method for the combined glass fiber reinforced concrete artificial reef according to claim 1, characterized in that: The control method includes: For the main crossbar, the outer surface with the first slot (7) and the second slot (8) is marked as surface A; the outer surface adjacent to surface A, facing the outside of the fish reef, with the groove formed by cutting the part of the prism of block b is surface B, and the R and Y surfaces are opposite to the A and B surfaces respectively; for the secondary crossbar, the outer surfaces of the two original prisms that remain continuous along the length direction are marked as surface C and surface D, among which the one with the full length of area b is surface C, and the one with 1 / 2 length of area b is surface D, and the K and L surfaces are opposite to the C and D surfaces respectively; for the vertical rotation rod, after being placed vertically, the outer surfaces of the two original prisms circumscribed with the cylinder (3) are marked as surface E and surface F from left to right, and the H and G surfaces are opposite to the E and F surfaces respectively; When assembling the lower layer, use the main cross bar as the splicing skeleton and the vertical rotating rod as the load-bearing body; first, use the bracket to fix a main cross bar of the lower layer, with the A side facing up and the B side facing the operator; then erect a vertical rotating rod, with its E side facing the operator, and its F side facing right and pushed into the slotted part of the b block on the leftmost side of the main cross bar, so that the cylinder is tangent to the leftmost side of the slotted part of the main cross bar, and then erect another vertical rotating rod, with its F side facing the operator, and its H side facing right and pushed into the slotted part of the rightmost side of the main cross bar, so that the cylinder is tangent to the rightmost side of the slotted part of the main cross bar; wait for the vertical rotating rod to be assembled. After the rotating rod is in place, install the clamping block around the cylinder to form a prism; then, repeat the above operation to symmetrically assemble the main crossbar and the vertical rotating rod on the other side, paying special attention to adjusting the distance between the two main crossbars; next, hoist the first secondary crossbar of the lower layer and place it on the left side, with the C side facing up and the D side facing the inside of the fish reef, moving from top to bottom, connect the first b blocks on both sides of the secondary crossbar to the b block area of ​​the main crossbar according to the concave and convex bite characteristics, repeat the above installation of the second secondary crossbar and place it on the right side, and the lower layer is basically assembled; The superstructure can be repeatedly operated or assembled flexibly according to the characteristics of the components and the form of the bracket. After the 12 rods are in place, the vertical rod facing and close to the left of the operator is rotated 90 degrees clockwise, and the vertical rod facing and close to the right of the operator is rotated 90 degrees counterclockwise, and so on for the remaining operations. After all the vertical rods are in place, all the pins are inserted into the first and second slots, thus completing the assembly of the entire combined glass fiber reinforced concrete artificial fish reef.

3. A method for improving the ecological environment of coastal waters, characterized in that: The method for improving the ecological environment of coastal waters uses the combined glass fiber reinforced concrete artificial fish reef described in claim 1.

4. A method for breeding fish and shrimps, characterized in that: The fish and shrimp farming method uses the combined glass fiber reinforced concrete artificial fish reef described in claim 1 to create conditions for fish and shrimp to gather, inhabit, grow and reproduce.

5. A method for promoting the proliferation of aquatic resources, characterized in that: The method for promoting the proliferation of aquatic resources uses the combined glass fiber reinforced concrete artificial fish reef described in claim 1 as an underwater obstacle to restrict fishing gear from operating in a no-fishing zone, thereby promoting the proliferation of aquatic resources.

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