A GFRP steel bar composite reinforcement seawater and sea sand concrete beam and construction method thereof

Abstract

The invention discloses a GFRP steel bar composite bar seawater and sea sand concrete beam and a construction method thereof, comprising a GFRP concrete forming frame, wherein baffles are movably installed at the upper and lower ends of the GFRP concrete forming frame through a plurality of groups of screw rods, a metal connection layer is fixedly arranged on the outer side of the GFRP resin tube, a plurality of groups of the metal connection layers are fixedly connected to each other through a plurality of groups of composite support steel bars, a reinforcing mechanism is arranged in the GFRP resin tube, and the strength of the GFRP resin tube is increased by the reinforcing mechanism; by arranging the concrete beam in the GFRP concrete forming frame and the baffle, the corrosion damage of the concrete beam is reduced, the dispersed airflow enters the GFRP resin tube in sequence and passes through the concrete beam, the impact force of strong wind when blowing into the surface of the GFRP forming frame is reduced, the loosening of the concrete beam and the node is solved, and an equilateral triangle is formed between the plurality of groups of composite support steel bars and every three groups of metal connection layers, so as to improve the strength of the concrete beam after casting.

Description

Technical Field

[0001] The invention relates to the technical field of seawater-sand concrete beams, and in particular to a GFRP steel bar composite reinforcement seawater-sand concrete beam and a construction method thereof. Background Art

[0002] For example, the Chinese patent with the announcement number CN114991385A discloses a full FRP tube seawater sand concrete beam, including an outer FRP tube, several groups of first FRP tubes, several groups of second FRP tubes and seawater sand concrete; the outer FRP tube is a U-shaped groove, several groups of first FRP tubes are arranged on the inner upper part of the outer FRP tube, the fiber direction is circumferential, the tube is filled with seawater sand concrete, and the second FRP tube is located at the inner lower part of the outer FRP tube; the seawater sand concrete is filled inside the outer FRP tube.

[0003] However, the above scheme has the following shortcomings: in the above patent, several groups of first FRP tubes are used to strongly constrain the concrete in the compression zone of the beam. This force mechanism provides a safety warning for structural failure and increases the safety reserve. However, when the concrete beam is installed at the seaside, due to the lack of obstruction, the strong wind at sea may cause damage to the concrete beam when it blows into the surface of the concrete beam for a long time. At the same time, the concrete beam may become loose between the concrete beam and the node under the strong wind for a long time. For this reason, we introduce a GFRP steel bar composite reinforcement seawater and sea sand concrete beam and its construction method. Summary of the invention

[0004] The object of the present invention is to provide a GFRP steel bar composite bar seawater and sea sand concrete beam and a construction method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A GFRP steel bar composite bar seawater and sea sand concrete beam, comprising a GFRP concrete forming frame, wherein baffles are movably installed at the upper and lower ends of the GFRP concrete forming frame through a plurality of sets of screws, a concrete beam is cast in the GFRP concrete forming frame, and concrete can be cast into the GFRP concrete forming frame to form a concrete beam by unscrewing the plurality of sets of screws and removing the baffles, wherein a plurality of sets of GFRP resin tubes are fixedly connected in the GFRP concrete forming frame, wherein both ends of the GFRP resin tubes penetrate the GFRP concrete forming frame and are connected to the external environment, and the airflow is guided by the GFRP resin tubes so that the wind blowing to the surface of the GFRP concrete forming frame is dispersed;

[0007] A metal connection layer is fixedly arranged on the outside of the GFRP resin tube, and several groups of the metal connection layers are fixedly connected to each other through several groups of composite supporting steel bars, and are connected to several groups of metal connection layers through several groups of composite supporting steel bars, so that every three groups of metal connection layers and several groups of composite supporting steel bars form an equilateral triangle. A reinforcement mechanism is arranged inside the GFRP resin tube, and the strength of the GFRP resin tube is increased by the reinforcement mechanism.

[0008] Preferably, the reinforcement mechanism includes several groups of composite reinforcing steel bars, both ends of several groups of the composite reinforcing steel bars are fixedly connected to connecting rings, and metal mesh is fixedly sleeved on the outside of several groups of the composite reinforcing steel bars, and the composite reinforcing steel bars, connecting rings and metal mesh are all arranged in the GFRP resin tube.

[0009] Preferably, metal retaining nets are fixedly connected to both ends of the GFRP resin tube, and air guide grooves are provided at both ends of the GFRP resin tube, and the air guide grooves are opened in the GFRP concrete forming frame.

[0010] Preferably, a plurality of groups of screw connection holes are opened in the upper end of the baffle, and the plurality of groups of screw connection holes are arranged at equal intervals, and sealing screws are screwed in the screw connection holes.

[0011] In addition, in order to achieve the above object, the present invention also provides a construction method for the above-mentioned GFRP steel bar composite reinforcement seawater and sea sand concrete beam, comprising:

[0012] S1. Connect the two ends of the GFRP concrete forming frame to the beam-column nodes. After the connection is completed, unscrew several sets of screws to remove the baffle. After the removal is completed, concrete can be poured into the GFRP concrete forming frame. After the pouring is completed, the baffle is reinstalled to the upper end of the GFRP concrete forming frame through several sets of screws;

[0013] S2. Unscrew several sets of sealing screws in the baffle at the upper end, so that external air can enter the GFRP concrete forming frame through the screw holes to accelerate the forming of the concrete beam. After the concrete beam is formed, screw the sealing screws back into the screw holes;

[0014] S3. When the wind blows into the side of the GFRP concrete forming frame, the wind blowing onto the surface of the GFRP concrete forming frame is dispersed and enters the GFRP resin tube through the air guide groove, and finally passes through the concrete beam through the GFRP resin tube. The metal baffles connected at both ends of the GFRP resin tube block the debris.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting the concrete beam in the GFRP concrete forming frame and the baffle, the corrosion damage of the concrete beam is reduced; at the same time, by means of a plurality of groups of GFRP resin tubes arranged in the GFRP concrete forming frame, strong wind can be dispersed when it blows into the surface of the GFRP forming frame, and the dispersed airflow enters the GFRP resin tubes in turn and passes through the concrete beam, thereby reducing the impact force of the strong wind when it blows into the surface of the GFRP forming frame, solving the problem of looseness between the concrete beam and the node, and by forming an equilateral triangle between a plurality of groups of composite supporting steel bars and every three groups of metal connecting layers, the strength of the concrete beam after casting is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention;

[0017] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the connection relationship between the GFRP concrete forming frame and the GFRP resin pipe of the present invention;

[0018] Figure 3 This is a three-dimensional structural schematic diagram of the connection relationship between GFRP and composite support steel bars of the present invention;

[0019] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the connection relationship between the GFRP resin pipe and the reinforcement mechanism of the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the connection relationship between the composite reinforcing steel bar and the connecting ring of the present invention;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] In the figure: 1. GFRP concrete forming frame; 2. baffle; 3. screw; 4. screw hole; 5. sealing screw; 6. metal baffle; 7. air guide groove; 8. GFRP resin pipe; 9. composite supporting steel bar; 10. concrete beam; 11. metal mesh; 12. composite reinforcing steel bar; 13. connecting ring; 14. metal connecting layer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0024] See also Figure 1 -6. The present invention provides a technical solution:

[0025] Embodiment 1:

[0026] A GFRP steel bar composite rib seawater and sea sand concrete beam comprises a GFRP concrete forming frame 1, baffles 2 are movably mounted on the upper and lower ends of the GFRP concrete forming frame 1 through a plurality of sets of screws 3, the materials of the GFRP concrete forming frame 1 and the baffles 2 are both glass fiber reinforced plastic, which is a composite material composed of glass fiber and resin, and has excellent properties such as light weight, high strength, and corrosion resistance, a concrete beam 10 is cast in the GFRP concrete forming frame 1, and concrete can be cast into the GFRP concrete forming frame 1 to form the concrete beam 10 by unscrewing the plurality of sets of screws 3 and removing the baffles 2, a plurality of sets of GFRP resin tubes 8 are fixedly connected in the GFRP concrete forming frame 1, the material of the GFRP resin tubes 8 is glass fiber reinforced plastic, both ends of the GFRP resin tubes 8 penetrate the GFRP concrete forming frame 1 and are connected to the external environment, and the airflow is guided by the GFRP resin tubes 8, so that the wind blowing to the surface of the GFRP concrete forming frame 1 is dispersed, thereby reducing the impact force of strong wind blowing to the surface of the GFRP concrete forming frame 1;

[0027] A metal connection layer 14 is fixedly provided on the outside of the GFRP resin tube 8. Several groups of metal connection layers 14 are fixedly connected to each other through several groups of composite supporting steel bars 9. Several groups of composite supporting steel bars 9 are connected to several groups of metal connection layers 14, so that every three groups of metal connection layers 14 and several groups of composite supporting steel bars 9 form an equilateral triangle, thereby improving the strength of the concrete beam after pouring. A reinforcing mechanism is provided in the GFRP resin tube 8, and the strength of the GFRP resin tube 8 is increased by the reinforcing mechanism, so that the GFRP resin tube 8 will not break when hit by external force or when pouring concrete.

[0028] Embodiment 2:

[0029] On the basis of Example 1, in order to prevent the GFRP resin tube 8 from breaking and prevent debris from entering the GFRP resin tube 8 to block it, resulting in the inability of airflow to pass through the GFRP resin tube 8, the reinforcement mechanism includes a plurality of groups of composite reinforcing steel bars 12, both ends of the plurality of groups of composite reinforcing steel bars 12 are fixedly connected to the connecting ring 13, and the outer sides of the plurality of groups of composite reinforcing steel bars 12 are fixedly sleeved with a metal mesh 11, and the composite reinforcing steel bars 12, the connecting ring 13 and the metal mesh 11 are all arranged in the GFRP resin tube 8. By arranging the plurality of groups of composite reinforcing steel bars 12 and the metal mesh 11, the GFRP resin tube 8 will not break when it is hit by an external force or when pouring concrete;

[0030] Metal blocking nets 6 are fixedly connected to both ends of the GFRP resin tube 8, and debris is blocked by the metal blocking nets 6, so that the debris cannot enter the GFRP resin tube 8 to block it, ensuring that the airflow can pass through the GFRP resin tube 8. Air guide grooves 7 are provided at both ends of the GFRP resin tube 8, and the air guide grooves 7 can guide the airflow into the GFRP resin tube 8. The air guide grooves 7 are opened in the GFRP concrete forming frame 1, and a plurality of groups of screw holes 4 are opened in the upper end of the baffle 2. The plurality of groups of screw holes 4 are arranged at equal intervals, and sealing screws 5 are screwed in the screw holes 4.

[0031] In addition, in order to achieve the above object, the present invention also provides a construction method for the above GFRP steel bar composite reinforcement seawater and sea sand concrete beam, comprising:

[0032] S1, connect the two ends of the GFRP concrete forming frame 1 with the beam-column nodes, unscrew several sets of screws 3 after the connection is completed to remove the baffle 2, and pour concrete into the GFRP concrete forming frame 1 after the removal is completed, and reinstall the baffle 2 to the upper end of the GFRP concrete forming frame 1 through several sets of screws 3 after the pouring is completed;

[0033] S2, unscrew the several groups of sealing screws 5 in the baffle plate 2 at the upper end, so that the external air enters the GFRP concrete forming frame 1 through the screw holes 4, and accelerates the forming of the concrete beam 10. After the concrete beam 10 is formed, screw the sealing screws 5 back into the screw holes 4;

[0034] S3. When the wind blows into the side of the GFRP concrete forming frame 1, the wind blowing onto the surface of the GFRP concrete forming frame 1 is dispersed and enters the GFRP resin tube 8 through the air guide groove 7, and finally passes through the concrete beam 10 through the GFRP resin tube 8. The metal baffles 6 connected at both ends of the GFRP resin tube 8 block the debris.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A GFRP steel bar composite reinforcement seawater and sea sand concrete beam, comprising a GFRP concrete forming frame, characterized in that: The upper and lower ends of the GFRP concrete forming frame are movably equipped with baffles through a plurality of sets of screws. A concrete beam is cast in the GFRP concrete forming frame. By unscrewing the plurality of sets of screws and removing the baffles, concrete can be cast into the GFRP concrete forming frame to form a concrete beam. The GFRP concrete forming frame is fixedly connected with a plurality of sets of GFRP resin tubes. Both ends of the GFRP resin tubes penetrate the GFRP concrete forming frame and are connected to the external environment. The airflow is guided by the GFRP resin tubes so that the wind blowing to the surface of the GFRP concrete forming frame is dispersed. A metal connection layer is fixedly arranged on the outside of the GFRP resin tube, and several groups of the metal connection layers are fixedly connected to each other through several groups of composite support steel bars, and are connected to each other through several groups of composite support steel bars, so that every three groups of metal connection layers and several groups of composite support steel bars form an equilateral triangle, and a reinforcement mechanism is arranged inside the GFRP resin tube, and the strength of the GFRP resin tube is increased by the reinforcement mechanism; The reinforcing mechanism comprises a plurality of groups of composite reinforcing steel bars, both ends of the plurality of groups of composite reinforcing steel bars are fixedly connected to connecting rings, a plurality of groups of composite reinforcing steel bars are fixedly sleeved with metal mesh on the outside, and the composite reinforcing steel bars, connecting rings and metal mesh are all arranged in the GFRP resin tube; Metal blocking nets are fixedly connected to both ends of the GFRP resin tube. Air guide grooves are arranged at both ends of the GFRP resin tube. The air guide grooves are opened in the GFRP concrete forming frame.

2. The GFRP steel bar composite bar seawater and sea sand concrete beam according to claim 1, characterized in that: A plurality of groups of screw connection holes are provided in the upper end of the baffle plate, and the plurality of groups of screw connection holes are arranged at equal intervals, and sealing screws are screwed in the screw connection holes.

3. A construction method for the GFRP reinforced composite reinforcement seawater and sea sand concrete beam according to any one of claims 1 to 2, characterized in that: include: S1. Connect the two ends of the GFRP concrete forming frame to the beam-column nodes. After the connection is completed, unscrew several sets of screws to remove the baffle. After the removal is completed, concrete can be poured into the GFRP concrete forming frame. After the pouring is completed, the baffle is reinstalled to the upper end of the GFRP concrete forming frame through several sets of screws; S2. Unscrew several sets of sealing screws in the baffle at the upper end, so that external air can enter the GFRP concrete forming frame through the screw holes to accelerate the forming of the concrete beam. After the concrete beam is formed, screw the sealing screws back into the screw holes; S3. When the wind blows into the side of the GFRP concrete forming frame, the wind blowing onto the surface of the GFRP concrete forming frame is dispersed and enters the GFRP resin tube through the air guide groove, and finally passes through the concrete beam through the GFRP resin tube. The metal baffles connected at both ends of the GFRP resin tube block the debris.

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