A GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method

Abstract

The invention discloses a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and a construction method, belonging to the technical field of structural components. By means of a force-bearing mechanism, the GFRP steel bar is formed with fiber as a reinforcement and resin as a matrix, and has the characteristic of corrosion resistance. The GFRP steel bar is used instead of the steel bar, and the problem of steel bar corrosion in a corrosive environment can be effectively solved. At the same time, seawater sea sand shell concrete covering the GFRP steel bars is cast on both sides of the steel section. The raw material of the steel section is weathering steel with good ductility to compensate for the brittleness of the seawater sea sand shell concrete. At the same time, the internal GFRP steel bar is used as a prestressed steel bar. After the steel section is deformed due to an earthquake, the GFRP steel bar can provide secondary defense for earthquake resistance and continuous collapse resistance, give full play to its high-strength mechanical properties, and improve the overall node mechanical properties and strength.

Description

Technical Field

[0001] The present invention relates to the technical field of structural components, and in particular to a GFRP bar-seawater sand shell concrete beam-column node subcomponent and a construction method. Background Art

[0002] Seawater, sea sand and shell concrete is a special type of concrete. This type of concrete uses seawater as the mixing water for concrete. Sea sand is one of the main aggregates of concrete. Compared with freshwater sand, sea sand usually contains higher salt content. At the same time, crushed shells are added. The main component of shells is calcium carbonate, which is a highly brittle material. After adding it, the strength of concrete can be improved, making it able to withstand greater loads and forces than traditional concrete, but it sacrifices a certain degree of ductility.

[0003] Using seawater and sea sand as concrete materials can reduce dependence on land resources. The cost of obtaining seawater and sea sand is relatively low. Using seawater and sea sand concrete can reduce construction costs. At the same time, in the marine environment, seawater and sea sand concrete has good durability and can resist the erosion of seawater and chloride ions, thus extending the service life of the building.

[0004] However, in actual use, due to the penetration of seawater and cement hydration, the pore solution of seawater and sea sand concrete contains a large amount of free water molecules, hydroxyl ions and chloride ions. These corrosive molecules and ions penetrate the seawater and sea sand concrete through penetration and capillary action and react with the steel bars inside it, causing the steel bars to rust and thus reducing the strength and durability of the concrete. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that when seawater sand and shell concrete is used as the casting material of beam-column node sub-components, due to the penetration of seawater and cement hydration, the pore solution of seawater sand concrete contains a large amount of free water molecules, hydroxyl ions and chloride ions. These corrosive molecules and ions penetrate the seawater sand concrete by penetration and capillary action and react with the steel bars inside it, causing the steel bars to rust, thereby reducing the strength and durability of the concrete. A GFRP bar-seawater sand and shell concrete beam-column node sub-component and a construction method are proposed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technology to provide a GFRP bar-seawater sand shell concrete beam-column node sub-component:

[0007] It comprises a steel section, wherein two force-bearing mechanisms are arranged on both sides of the steel section, the force-bearing mechanism comprises a clip installed in the steel section, a GFRP steel bar is penetrated through the surface of the clip, and anchors are fixedly installed at both ends of the GFRP steel bar;

[0008] The surface of the GFRP steel bar is covered with an anti-corrosion mechanism, the anti-corrosion mechanism includes a mounting seat installed on the clamping piece, a mounting shell is mounted on the GFRP steel bar between the two mounting seats, a heterogeneous hydrophobic rope and a heterogeneous hydrophilic rope are wound around the surface of the mounting shell, and a protective shell is covered on the surface of the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope;

[0009] Seawater, sea sand and shell concrete covering the protective shell is poured on both sides of the steel section.

[0010] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0011] The installation shell comprises two semi-arc shells sleeved on the surface of the GFRP steel bar, and fastening flanges are arranged on the ends of both sides of the shells, and a plurality of fixing rings are arranged around the fastening flanges;

[0012] A clamping jacket is fixedly mounted on the surfaces of two adjacent fastening flanges.

[0013] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0014] The heterogeneous hydrophobic ropes and the heterogeneous hydrophilic ropes are alternately arranged and wound on the surface of the shell, and the outer diameter of the shell is configured to gradually expand from both sides to the middle.

[0015] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0016] The surfaces of the two mounting seats are provided with semicircular mounting rails, and the ends of both sides of the protective shell are provided with mounting grooves that engage with the mounting rails, and the two protective shells are rotated and fixed on the mounting seats in sequence through the mounting grooves;

[0017] The surface of the protective shell is provided with a plurality of bite lines arranged equidistantly.

[0018] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0019] The heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope are wound on the shell through a rope winding mechanism, and the rope winding mechanism includes a first half ring and a second half ring that fit the surface of the shell, and a handle is fixedly installed on the first half ring;

[0020] A rotating ring is rotatably embedded in the first half ring and the second half ring, and a number of threading channels for inserting heterogeneous hydrophobic ropes and heterogeneous hydrophilic ropes are equidistantly arranged around the surfaces of the first half ring, the second half ring and the rotating ring, and the inner diameters of the threading channels opened on the first half ring and the second half ring are larger than the inner diameter of the threading channels opened on the rotating ring.

[0021] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0022] A deformable rubber ring is arranged on the inner wall of the rotating ring, and the inner wall of the rubber ring is tightly fitted to the surface of the mounting shell.

[0023] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0024] The rotating ring is rotated by a rotating mechanism, and the rotating mechanism includes a mounting chamber opened on the second half ring, and a driving gear and a first bevel gear are rotatably arranged on the mounting chamber;

[0025] The first half ring is rotatably provided with a second bevel gear and a driven gear, and the second bevel gear meshes with the first bevel gear, and a gear ring meshing with the driven gear is sleeved and installed on the surface of the rotating ring;

[0026] A rack meshing with the driving gear is arranged in the protective shell.

[0027] As a further description of the above technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method:

[0028] The first half ring and the second half ring are connected by a locking mechanism, which includes a slide rail arranged in the installation chamber, an embedding strip is slidably embedded on the slide rail, and a handle is installed at the end of the embedding strip, and two positioning pins are arranged on the handle, and positioning holes that cooperate with the positioning pins are opened on the first half ring and the second half ring.

[0029] In addition, the present invention also proposes a construction method of a GFRP bar-seawater sea sand shell concrete beam-column node sub-component, which is applied to the above-mentioned GFRP bar-seawater sea sand shell concrete beam-column node sub-component, and the construction method comprises the following steps:

[0030] S1. Material preparation: prepare GFRP steel bars that meet the design requirements and have sufficient strength and toughness, and prepare seawater, sea sand and shell concrete according to the design requirements. The raw materials include cement, seawater, sea sand and shell powder, and the auxiliary materials include formwork, release agent and lashing materials;

[0031] S2. Install the GFRP steel bars as prestressed steel bars in the steel section, and tension and fix them at both ends by anchors and clips;

[0032] S3. The two shells are mounted on the GFRP steel bars and fixed with a jacket so that they cannot move on the surface of the GFRP steel bars. The shell installation is completed;

[0033] S4. The first half ring and the second half ring are respectively sleeved and installed on the surface of the shell, and then the handle is moved to drive the embedding strip to be embedded on the slide rail. As the locating pin of the embedding strip slides, it is inserted into the locating hole to connect the first half ring and the second half ring. Then, the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope are alternately passed through the threading channels opened on the surfaces of the first half ring, the second half ring and the rotating ring, and one end of the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope is tied to the fixed ring. The winding preparation of the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope is completed;

[0034] S5. Move the first half ring, the second half ring and the rotating ring. During the movement of the second half ring, the driving gear meshes with the rack and drives the first bevel gear to rotate, so that the first bevel gear drives the driven gear to rotate through the second bevel gear, and the driven gear drives the rotating ring to rotate through the gear ring, so that the rotating ring can drive the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope to rotate and wrap around the surface of the fixed ring. After the wrapping is completed, the first half ring and the second half ring are removed, and the other ends of the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope are tied to the fixed ring on the other side, and the wrapping of the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope is completed;

[0035] S6. The two protective shells are sequentially embedded in the mounting rails through the mounting grooves, so that the protective shells can cover the surface of the shell, the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope to prevent them from directly contacting with the seawater, sea sand and shell concrete;

[0036] S7. Pour seawater, sea sand and shell concrete into the steel section so that the seawater, sea sand and shell concrete completely covers the protective shell. Vibrate during the pouring process to improve the density and uniformity of the seawater, sea sand and shell concrete. After the pouring is completed, smooth and trim the surface of the seawater, sea sand and shell concrete, and the steel section construction is completed.

[0037] In summary, due to the adoption of the above-mentioned technology, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and construction method, the beneficial effects of the present invention are:

[0038] 1. Through the force-bearing mechanism, the GFRP steel bar is formed with fiber as reinforcement and resin as matrix, which has the characteristics of corrosion resistance. Using GFRP steel bars instead of steel bars can effectively solve the problem of steel bar corrosion in a corrosive environment. At the same time, seawater sea sand shell concrete covering the GFRP steel bars is poured on both sides of the steel. The raw material of the steel is weathering steel with good ductility to make up for the brittleness of seawater sea sand shell concrete. At the same time, the internal GFRP steel bars are used as prestressed steel bars. After the earthquake causes the steel to deform, the GFRP steel bars can provide secondary defense for earthquake resistance and progressive collapse resistance, give full play to its high-strength mechanical properties, and improve the overall node mechanical properties and strength;

[0039] 2. Through the anti-corrosion mechanism, before pouring seawater, sea sand and shell concrete, two shells are installed on the surface of GFRP steel bars, so that they can completely cover the GFRP steel bars without sliding. At this time, one end of the heterogeneous hydrophobic rope and the heterogeneous hydrophilic rope are alternately tied to the fixing ring and wrapped around the surface of the fixing ring to form a mesh layer. When water molecules come into contact with the surface of the heterogeneous hydrophobic rope, due to the characteristics of the hydrophobic surface, the water molecules will be deposited on the surface of the heterogeneous hydrophobic rope and form small water droplets. After the heterogeneous hydrophobic rope captures the water droplets, the water Under the action of the wettability gradient force of the heterogeneous hydrophilic rope, the water droplets will spontaneously move toward the heterogeneous hydrophilic rope. In the hydrophilic area formed by the heterogeneous hydrophilic rope, as the water droplets continue to move and contact, adjacent small water droplets will gather together to form larger water droplets. When the water droplets gather to a certain size in the hydrophilic area, they will fall under the action of gravity. Under the protection of the shell, heterogeneous hydrophobic rope and heterogeneous hydrophilic rope, it is difficult for water molecules to directly contact the GFRP steel bars, which slows down the degradation rate of the GFRP steel bar surface and extends the service life of the GFRP steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A three-dimensional structural schematic diagram of a GFRP bar-seawater sand shell concrete beam-column node sub-component and a construction method is shown;

[0041] Figure 2 Shows Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0042] Figure 3 A schematic diagram of the front cross-sectional structure of a GFRP bar-seawater sand shell concrete beam-column node sub-component is shown;

[0043] Figure 4 A schematic diagram of a three-dimensional disassembled state of the anti-corrosion mechanism is shown;

[0044] Figure 5 A partial three-dimensional structural schematic diagram of a mounting seat, a mounting shell and a protective shell is shown;

[0045] Figure 6 A schematic diagram of the three-dimensional structure of the mounting shell is shown;

[0046] Figure 7 A schematic diagram of the three-dimensional structure of the rope winding mechanism is shown;

[0047] Figure 8 Shows Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0048] Fig. 9 A partial front cross-sectional structural schematic diagram of the rope winding mechanism when it is sleeved on the mounting shell is shown;

[0049] Fig.10A partial three-dimensional structural schematic diagram of the rotating mechanism is shown;

[0050] Fig.11 A three-dimensional structural schematic diagram of the locking mechanism is shown.

[0051] Legend:

[0052] 10. Steel;

[0053] 20. Force-bearing mechanism; 21. Clip; 22. Anchor; 23. GFRP steel bar; 24. Seawater, sea sand and shell concrete;

[0054] 30. Anti-corrosion mechanism; 31. Mounting seat; 311. Mounting rail; 32. Mounting shell; 321. Shell; 322. Fastening flange; 323. Fixing ring; 324. Jacket; 33. Protective shell; 331. Mounting slide; 332. Occlusal pattern; 34. Heterogeneous hydrophobic rope; 35. Heterogeneous hydrophilic rope;

[0055] 40. Rope winding mechanism; 41. First half ring; 42. Second half ring; 43. Handle; 44. Rotating ring; 45. Rubber ring; 46. Threading channel;

[0056] 50. Rotating mechanism; 51. Mounting chamber; 52. Driving gear; 53. First bevel gear; 54. Second bevel gear; 55. Driven gear; 56. Rack; 57. Gear ring;

[0057] 60. Locking mechanism; 61. Slide rail; 62. Embedded strip; 63. Handle; 64. Positioning pin; 65. Positioning hole. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a GFRP bar-seawater sea sand shell concrete beam-column node sub-component and a construction method. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] In order to solve the problem that when seawater sand and shell concrete is used as a casting material for beam-column node sub-components, due to seawater penetration and cement hydration, the seawater sand concrete pore solution contains a large amount of free water molecules, hydroxyl ions and chloride ions. These corrosive molecules and ions penetrate the seawater sand concrete through penetration and capillary action and react with the steel bars inside, causing the steel bars to rust, thereby reducing the strength and durability of the concrete. The present invention proposes a GFRP bar-seawater sand and shell concrete beam-column node sub-component and a construction method, such as Figure 1 - Fig.11 As shown:

[0060] It includes a steel section 10, two force-bearing mechanisms 20 are arranged on both sides of the steel section 10, the force-bearing mechanism 20 includes a clip 21 installed in the steel section 10, a GFRP steel bar 23 is penetrated on the surface of the clip 21, and anchors 22 are fixedly installed at both ends of the GFRP steel bar 23;

[0061] GFRP steel bar 23 is formed by fiber as reinforcement and resin as matrix, and has the characteristics of corrosion resistance. Using GFRP steel bar 23 instead of steel bar can effectively solve the problem of steel bar corrosion in corrosive environment;

[0062] Seawater, sea sand and shell concrete 24 covering GFRP steel bars 23 are cast on both sides of the steel section 10. The raw material of the steel section 10 is weathering steel with good ductility to compensate for the brittleness of the seawater, sea sand and shell concrete 24. At the same time, the internal GFRP steel bars 23 serve as prestressed steel bars. After the steel section 10 is deformed due to an earthquake, the GFRP steel bars 23 can provide secondary defense against earthquakes and progressive collapse, give full play to its high-strength mechanical properties, and improve the overall node mechanical properties and strength.

[0063] When an earthquake occurs and causes the steel section 10 to deform, the seawater, sea sand and shell concrete 24 covering the surface of the GFRP steel bar 23 will mostly crack due to its poor ductility. Therefore, seawater may penetrate through cracks that are difficult to detect with the naked eye and directly contact the GFRP steel bar 23. The GFRP steel bar 23 will react with water molecules, hydroxyl ions and chloride ions in a humid environment, and cause the resin on the surface to hydrolyze. In addition, due to the swelling of the resin matrix, a channel is provided for the flow of the solution, so microcracks gradually occur and develop, which accelerates the gradual degradation of the resin, and debonding occurs at the interface between the fiber and the resin. In the absence of resin protection, the exposed glass fiber dissolves in the solution during the leaching process. After the glass fiber as a reinforcement is destroyed, cracks appear on the surface of the GFRP steel bar 23 or the inside becomes brittle, which eventually leads to fiber breakage, accelerating the degradation of the GFRP steel bar 23 in the seawater environment. In order to avoid the occurrence of this problem, Figure 2 - Figure 6 As shown, the surface of the GFRP steel bar 23 is sleeved with an anti-corrosion mechanism 30, and the anti-corrosion mechanism 30 includes a mounting seat 31 mounted on the clamping piece 21, and a mounting shell 32 is sleeved and installed on the GFRP steel bar 23 between the two mounting seats 31, and a heterogeneous hydrophobic rope 34 and a heterogeneous hydrophilic rope 35 are wound around the surface of the mounting shell 32, and a protective shell 33 is sleeved on the surface of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35;

[0064] The mounting shell 32 includes two semi-arc shells 321 sleeved on the surface of the GFRP steel bar 23, and fastening flanges 322 are arranged on the ends of both sides of the shell 321, and a plurality of fixing rings 323 are arranged around the fastening flanges 322;

[0065] A jacket 324 is fixedly mounted on the surfaces of two adjacent fastening flanges 322 .

[0066] The heterogeneous hydrophobic ropes 34 and the heterogeneous hydrophilic ropes 35 are alternately arranged and wound on the surface of the shell 321, and the outer diameter of the shell 321 is set to gradually expand from both sides to the middle;

[0067] Before pouring the seawater sand shell concrete 24, the two shells 321 are sleeved and installed on the surface of the GFRP steel bar 23, and the jacket 324 is sleeved on the fastening flange 322. The two shells 321 are connected by the fastening flange 322 and the jacket 324 so that they can completely cover the GFRP steel bar 23 without sliding. At this time, one end of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are alternately tied to the fixing ring 323 and wound on the surface of the fixing ring 323 to form a mesh layer, and the other end is tied to the fixing ring 323 set on the other side of the shell 321. 4 and the heterogeneous hydrophilic rope 35 are set up. When water molecules come into contact with the surface of the heterogeneous hydrophobic rope 34, due to the characteristics of the hydrophobic surface, the water molecules will be deposited on the surface of the heterogeneous hydrophobic rope 34 and form small water droplets. After the heterogeneous hydrophobic rope 34 captures the water droplets, the water droplets will spontaneously move toward the heterogeneous hydrophilic rope 35 under the action of the wettability gradient force of the heterogeneous hydrophilic rope 35. In the hydrophilic area formed by the heterogeneous hydrophilic rope 35, as the water droplets continue to move and contact, the adjacent small water droplets will gather together to form larger water droplets. When the water droplets gather to a certain size in the hydrophilic area, they will fall under the action of gravity;

[0068] Since the outer diameter of the shell 321 is set to gradually expand from both sides to the middle, the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 wrapped around the surface of the shell 321 are inclined. Under the action of gravity, water droplets flow from high to low along the inclined surface, so that they quickly drip from the surface of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 to avoid long-term attachment. Under the protection of the shell 321, the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35, it is difficult for water molecules to directly contact the GFRP steel bars 23, which slows down the degradation rate of the surface tree of the GFRP steel bars 23 and extends the service life of the GFRP steel bars 23.

[0069] After the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are wound, the two protective shells 33 are installed on the surface of the housing 321. Figure 5As shown, the surfaces of the two mounting seats 31 are provided with semicircular mounting rails 311, and the ends of both sides of the protective shell 33 are provided with mounting grooves 331 that are mutually engaged with the mounting rails 311, and the two protective shells 33 are rotated and fixed on the mounting seats 31 in sequence through the mounting grooves 331;

[0070] The surface of the protective shell 33 is provided with a plurality of bite lines 332 arranged equidistantly;

[0071] By moving and rotating the protective shell 33, the two protective shells 33 are nested in sequence on the mounting rail 311 set on the mounting seat 31 through the mounting groove 331. After the GFRP steel bar 23 is installed, seawater, sea sand and shell concrete 24 is poured on its surface. The mechanical bite force between the seawater, sea sand and shell concrete 24 and the protective shell 33 can be increased through the bite pattern 332, thereby improving the bonding strength.

[0072] At the same time, in order to more conveniently wind the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35, the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are wound on the housing 321 through the rope winding mechanism 40, as shown in FIG. Figure 7 - Fig. 9 As shown, the rope winding mechanism 40 includes a first half ring 41 and a second half ring 42 that fit the surface of the housing 321, and a handle 43 is fixedly mounted on the first half ring 41;

[0073] A rotating ring 44 is rotatably embedded in both the first half ring 41 and the second half ring 42, and a plurality of threading channels 46 for inserting the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are equidistantly arranged around the surfaces of the first half ring 41, the second half ring 42 and the rotating ring 44. The inner diameters of the threading channels 46 arranged on the first half ring 41 and the second half ring 42 are larger than the inner diameter of the threading channels 46 arranged on the rotating ring 44. This design allows the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 to pass through the threading channels 46 arranged on the rotating ring 44 more smoothly.

[0074] A deformable rubber ring 45 is provided on the inner wall of the rotating ring 44. Through this design, the inner wall of the rubber ring 45 is closely fitted with the surface of the mounting shell 32, so as to ensure that when the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are wound on the surface of the shell 321, there will be no excessive gap between them and the surface of the shell 321, thereby achieving the purpose of improving the ability of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 to capture water molecules;

[0075] When winding the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35, the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are passed through the threading channel 46 opened on the surface of the first half ring 41, the second half ring 42 and the rotating ring 44, and the first half ring 41 and the second half ring 42 are sleeved on the surface of the shell 321 and connected by the locking mechanism 60, such as Figure 7 and Fig.11As shown, the locking mechanism 60 includes a slide rail 61 disposed in the installation chamber 51, an embedding strip 62 is slidably embedded on the slide rail 61, and a handle 63 is installed at the end of the embedding strip 62, and two positioning pins 64 are disposed on the handle 63, and positioning holes 65 that cooperate with the positioning pins 64 are opened on the first half ring 41 and the second half ring 42;

[0076] By moving the handle 63, the handle 63 drives the embedding strip 62 to be inserted into the installation chamber 51 and embedded on the surface of the slide rail 61. Under the guidance of the embedding strip 62 and the slide rail 61, the handle 63 can drive the positioning pin 64 to be inserted into the positioning hole 65, and the first half ring 41 and the second half ring 42 are connected through the handle 63.

[0077] The rotating ring 44 is rotated by the rotating mechanism 50. Figure 8 - Fig.10 As shown, the rotating mechanism 50 includes a mounting chamber 51 opened on the second half ring 42, and a driving gear 52 and a first bevel gear 53 are rotatably arranged on the mounting chamber 51;

[0078] A second bevel gear 54 and a driven gear 55 are rotatably mounted on the first half ring 41, and the second bevel gear 54 meshes with the first bevel gear 53. A gear ring 57 meshing with the driven gear 55 is sleeved and mounted on the surface of the rotating ring 44.

[0079] A rack 56 meshing with the driving gear 52 is disposed in the protective shell 33;

[0080] When the first half ring 41 and the second half ring 42 are assembled, the second half ring 42 drives the driving gear 52 set in the installation chamber 51 to embed into the rack 56 set on the inner wall of the protective shell 33, and then pulls the handle 43, so that the handle 43 drives the first half ring 41 and the second half ring 42 to move on the surface of the shell 321. When moving, the driving gear 52 drives the first bevel gear 53 to rotate with the cooperation of the rack 56, and the first bevel gear 53 drives the driven gear 55 to rotate through the second bevel gear 54 meshing therewith, so that the driven gear 55 is driven to rotate through the gear ring 57 The ring 44 rotates inside the first half ring 41 and the second half ring 42, and the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 passing through the threading channel 46 opened on the rotating ring 44 can be wound around the surface of the shell 321 as they rotate, thereby achieving the purpose of winding the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 on the surface of the shell 321 more easily. After the winding is completed, the first half ring 41 and the second half ring 42 are removed from the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35, and then the ends of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are wound around the fixed ring 323 to complete the installation.

[0081] The present invention also proposes a construction method of a GFRP bar-seawater sand shell concrete beam-column node sub-component, which is applied to the above-mentioned GFRP bar-seawater sand shell concrete beam-column node sub-component, and the specific use steps are as follows:

[0082] S1. Material preparation: prepare GFRP steel bars 23 with sufficient strength and toughness that meet the design requirements, and prepare seawater and sea sand shell concrete 24 according to the design requirements, including cement, seawater, sea sand, shell powder, formwork, release agent, and lashing materials;

[0083] S2. The GFRP steel bar 23 is installed in the steel section as a prestressed steel bar, and both ends are fixed by the anchor 22 and the clip 21;

[0084] S3. The two housings 321 are mounted on the GFRP steel bars 23 and fixed using a jacket 324 so that they cannot move on the surface of the GFRP steel bars 23. The housing 321 is installed;

[0085] S4. The first half ring 41 and the second half ring 42 are respectively sleeved and installed on the surface of the housing 321, and then the handle 63 is moved to drive the embedding strip 62 to be embedded in the slide rail 61. As the slidable positioning pin 64 of the embedding strip 62 is inserted into the positioning hole 65 to connect the first half ring 41 and the second half ring 42, the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are alternately passed through the threading channel 46 opened on the surface of the first half ring 41, the second half ring 42 and the rotating ring 44, and one end of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are tied to the fixed ring 323, and the winding preparation of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 is completed;

[0086] S5. Move the first half ring 41, the second half ring 42 and the rotating ring 44. During the movement of the second half ring 42, the driving gear 52 meshes with the rack 56 and drives the first bevel gear 53 to rotate, so that the first bevel gear 53 drives the driven gear 55 to rotate through the second bevel gear 54, and the driven gear 55 drives the rotating ring 44 to rotate through the gear ring 57, so that the rotating ring 44 can drive the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 to rotate and wind around the surface of the fixed ring 323. After the winding is completed, the first half ring 41 and the second half ring 42 are removed, and the other ends of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 are tied to the fixed ring 323 on the other side, and the winding of the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 is completed;

[0087] S6. The two protective shells 33 are sequentially embedded in the mounting rails 311 through the mounting grooves 331, so that the protective shells 33 can cover the surface of the housing 321, the heterogeneous hydrophobic rope 34 and the heterogeneous hydrophilic rope 35 to avoid direct contact with the seawater, sea sand and shell concrete 24;

[0088] S7. Pour seawater, sea sand and shell concrete 24 into the steel section 10 so that the seawater, sea sand and shell concrete 24 completely covers the protective shell. Vibrate during the pouring process to improve the density and uniformity of the seawater, sea sand and shell concrete 24. After the pouring is completed, smooth and trim the surface of the seawater, sea sand and shell concrete 24, and the construction of the steel section 10 is completed.

[0089] The above description is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to the GFRP bar-seawater sand shell concrete beam-column node sub-component and construction method and the inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A GFRP bar-seawater sand shell concrete beam-column node sub-component, comprising a steel section (10), characterized in that: Two force-bearing mechanisms (20) are provided on both sides of the steel section (10), the force-bearing mechanism (20) comprising a clip (21) installed in the steel section (10), a GFRP steel bar (23) penetrating the surface of the clip (21), and anchors (22) fixedly installed at both ends of the GFRP steel bar (23); The surface of the GFRP steel bar (23) is provided with an anti-corrosion mechanism (30), the anti-corrosion mechanism (30) comprises a mounting seat (31) mounted on the clamping piece (21), a mounting shell (32) is mounted on the GFRP steel bar (23) between the two mounting seats (31), a heterogeneous hydrophobic rope (34) and a heterogeneous hydrophilic rope (35) are wound around the surface of the mounting shell (32), and a protective shell (33) is mounted on the surface of the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35); Seawater and sea sand shell concrete (24) covering the protective shell (33) is poured on both sides of the steel section (10).

2. A GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 1, characterized in that: The mounting shell (32) comprises two semi-arc-shaped shells (321) sleeved on the surface of the GFRP steel bar (23), and fastening flanges (322) are arranged at the ends of both sides of the shells (321), and a plurality of fixing rings (323) are arranged around the fastening flanges (322); A clamping sleeve (324) is fixedly sleeved on the surface of two adjacent fastening flanges (322).

3. A GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 2, characterized in that: The heterogeneous hydrophobic ropes (34) and the heterogeneous hydrophilic ropes (35) are alternately arranged and wound on the surface of the shell (321), and the outer diameter of the shell (321) is configured to gradually expand from both sides to the middle.

4. A GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 2, characterized in that: The surfaces of the two mounting seats (31) are provided with semicircular mounting rails (311), and the ends of both sides of the protective shell (33) are provided with mounting grooves (331) that interlock with the mounting rails (311), and the two protective shells (33) are rotated and fixed on the mounting seats (31) in sequence through the mounting grooves (331); The surface of the protective shell (33) is provided with a plurality of bite lines (332) arranged at equal intervals.

5. The GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 3, characterized in that: The heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) are wound on the housing (321) via a rope winding mechanism (40); the rope winding mechanism (40) comprises a first half ring (41) and a second half ring (42) that are in contact with the surface of the housing (321); a handle (43) is fixedly mounted on the first half ring (41); A rotating ring (44) is rotatably embedded in the first half ring (41) and the second half ring (42), and a plurality of threading channels (46) for inserting the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) are equidistantly arranged around the surfaces of the first half ring (41), the second half ring (42) and the rotating ring (44), and the inner diameters of the threading channels (46) arranged on the first half ring (41) and the second half ring (42) are larger than the inner diameter of the threading channels (46) arranged on the rotating ring (44).

6. A GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 5, characterized in that: A deformable rubber ring (45) is provided on the inner wall of the rotating ring (44), and the inner wall of the rubber ring (45) is tightly fitted to the surface of the mounting shell (32).

7. The GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 5, characterized in that: The rotating ring (44) is rotated by a rotating mechanism (50), wherein the rotating mechanism (50) comprises a mounting chamber (51) provided on the second half ring (42), and a driving gear (52) and a first bevel gear (53) are rotatably arranged on the mounting chamber (51); A second bevel gear (54) and a driven gear (55) are rotatably mounted on the first half ring (41), and the second bevel gear (54) and the first bevel gear (53) are meshed with each other. A gear ring (57) meshing with the driven gear (55) is sleeved and mounted on the surface of the rotating ring (44); A rack (56) meshing with the driving gear (52) is arranged in the protective shell (33).

8. The GFRP bar-seawater sand shell concrete beam-column node sub-component according to claim 7, characterized in that: The first half ring (41) and the second half ring (42) are connected via a locking mechanism (60), the locking mechanism (60) comprising a slide rail (61) arranged in the installation chamber (51), an embedding strip (62) being slidably embedded on the slide rail (61), and a handle (63) being installed at the end of the embedding strip (62), and two positioning pins (64) being arranged on the handle (63), and positioning holes (65) cooperating with the positioning pins (64) are provided on both the first half ring (41) and the second half ring (42).

9. A construction method for a GFRP bar-seawater sand shell concrete beam-column node subcomponent, using a GFRP bar-seawater sand shell concrete beam-column node subcomponent as claimed in any one of claims 1 to 8, characterized in that: The construction method includes the following steps: S1. Material preparation: prepare GFRP steel bars (23) of sufficient strength and toughness that meet the design requirements, and prepare seawater, sea sand and shell concrete (24) according to the design requirements. The raw materials include cement, seawater, sea sand and shell powder, and the auxiliary materials include formwork, release agent and lashing materials; S2. The GFRP steel bar (23) is installed as a prestressed steel bar in the steel section, and the two ends are tensioned and fixed by anchors (22) and clips (21); S3. The two shells (321) are mounted on the GFRP steel bars (23) and fixed with a jacket (324) so ​​that they cannot move on the surface of the GFRP steel bars (23). The installation of the shell (321) is completed; S4. The first half ring (41) and the second half ring (42) are respectively sleeved and installed on the surface of the housing (321), and then the handle (63) is moved to drive the embedding strip (62) to be embedded in the slide rail (61). As the slidable positioning pin (64) of the embedding strip (62) is inserted into the positioning hole (65) to connect the first half ring (41) and the second half ring (42), the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) are alternately passed through the threading channel (46) opened on the surface of the first half ring (41), the second half ring (42) and the rotating ring (44), and one end of the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) are tied to the fixed ring (323), and the winding preparation of the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) is completed; S5. The first half ring (41), the second half ring (42) and the rotating ring (44) are moved. During the movement of the second half ring (42), the driving gear (52) meshes with the rack (56) and drives the first bevel gear (53) to rotate, so that the first bevel gear (53) drives the driven gear (55) to rotate through the second bevel gear (54), and the driven gear (55) drives the rotating ring (44) to rotate through the gear ring (57), so that the rotating ring (44) can drive the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) to rotate and be wound around the surface of the fixed ring (323). After the winding is completed, the first half ring (41) and the second half ring (42) are removed, and the other ends of the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) are tied to the fixed ring (323) on the other side, and the winding of the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35) is completed; S6. The two protective shells (33) are sequentially embedded in the mounting rail (311) through the mounting groove (331), so that the protective shells (33) can cover the surface of the shell (321), the heterogeneous hydrophobic rope (34) and the heterogeneous hydrophilic rope (35), avoiding direct contact with the seawater, sea sand and shell concrete (24); S7. pouring seawater sand shell concrete (24) into the steel section (10) so that the seawater sand shell concrete (24) completely covers the protective shell. During the pouring process, vibrating is performed to improve the density and uniformity of the seawater sand shell concrete (24). After the pouring is completed, the surface of the seawater sand shell concrete (24) is smoothed and trimmed, and the construction of the steel section (10) is completed.

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