A GFRP seawater sand concrete beam-column node and construction method thereof

Abstract

The invention discloses a GFRP seawater-sand concrete beam-column node and a construction method thereof, comprising a node structure for installing a seawater-sand concrete column and a seawater-sand concrete seawater-sand concrete beam, the outer surfaces of the seawater-sand concrete column and the seawater-sand concrete seawater-sand concrete beam are both provided with a GFRP material layer, one end of the connecting gear is fixedly connected with a screw rod, the end of the screw rod away from the connecting gear passes through a connecting plate and extends into an installation groove, so that the sealing liquid in the liquid storage cavity does not enter the liquid guide cavity; by placing one end of the seawater-sand concrete beam in the installation groove, the screw rod is screwed into a corresponding screw connection hole to limit and fix the seawater-sand concrete beam, after the screw connection with the screw rod is completed, the blocking mechanism will cancel the blocking of the liquid guide cavity, so as to prevent water vapor from blowing to the connection between the screw rod and the screw connection hole in the seawater-sand concrete beam for a long time to cause corrosion, and then the seawater-sand concrete beam becomes loose.

Description

Technical Field

[0001] The invention relates to the technical field of concrete beam-column nodes, and in particular to a GFRP seawater-sand concrete beam-column node and a construction method thereof. Background Art

[0002] Precast concrete has become the new favorite in the construction industry for its low cost and excellent performance. At present, precast assembled concrete beams and columns are prefabricated in factories, and the connection between beams and columns generally adopts the method of secondary pouring on site. The precast GFRP bar reinforced seawater and sea sand concrete beams and columns produced by this method require additional tools and supports on site to assist in construction, and high installation accuracy is required.

[0003] For example, the Chinese patent with announcement number CN116480003A discloses an assembled FRP bar reinforced seawater and sea sand concrete node, including a support beam, four sets of fixing components are arranged on the upper end of the support beam, the fixing components are used to fix the crossbeam, and the fixing components include: a support plate mechanism, the support plate mechanism is fixedly installed on the upper end of the support beam, and two sets of correction plate mechanisms are symmetrically distributed on both sides of the support plate mechanism, driving two sets of plate bodies one in opposite directions, and the two sets of plate bodies one move toward the two sides of the crossbeam respectively.

[0004] However, the above scheme has the following shortcomings: in the above patent, the two sets of plate bodies one and the two sets of plate bodies two are used to limit and clamp the cross beam by rotating the screw rod, and the cross beam is fixed by clamping the limit plate in the limit groove. However, when the beam-column node is used on the sea surface or the seaside, the sea breeze often carries the water vapor generated by the evaporation of the sea surface to move. When the sea breeze carrying water vapor blows to the position of the beam-column node for a long time, the components located in the beam-column node may be corroded and damaged, resulting in loose connection between the cross beam and the node. For this reason, we introduce a GFRP seawater and sea sand concrete beam-column node and its construction method. Summary of the invention

[0005] The object of the present invention is to provide a GFRP seawater and sea sand concrete beam-column node and a construction method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A GFRP seawater-sand concrete beam-column node, comprising a node structure for installing a seawater-sand concrete column and a seawater-sand concrete beam, the outer surfaces of the seawater-sand concrete column and the seawater-sand concrete beam are both provided with a GFRP material layer, the node structure comprises four groups of connection seats, the four groups of connection seats are fixedly arranged around the outer side of the seawater-sand concrete column, the upper end of the connection seat is provided with a mounting groove, two groups of connection plates are movably connected in the mounting groove, a cavity is provided in the connection plate, an inner gear ring is movably connected in the cavity, a plurality of groups of connection gears are meshed on the inner side of the inner gear ring, one end of the connection gear is fixedly connected with a screw, the end of the screw away from the connection gear penetrates the connection plate and extends into the mounting groove, a tooth groove is provided in the outer side of the inner gear ring, and a transmission gear is meshed on the lower side of the tooth groove;

[0008] The transmission gear is sleeved on the outside of the connecting shaft, and the connecting shaft is movably connected to the connecting seat. One end of the connecting shaft extends out of the connecting seat and is fixedly connected to the hand wheel. A liquid storage cavity is provided in the lower end of the connecting seat, and a plurality of groups of liquid guide cavities are provided in the upper end of the liquid storage cavity. The liquid guide cavity extends into the mounting groove away from one end of the liquid storage cavity. Two groups of blocking mechanisms are provided on the upper side of the liquid storage cavity. The blocking mechanism is fixedly connected to a group of connecting gears at one end away from the liquid storage cavity. The liquid guide cavity is blocked by the blocking mechanism, so that the sealing liquid in the liquid storage cavity will not enter the liquid guide cavity.

[0009] The opposite surfaces of the two groups of connecting plates are fixedly connected with L-shaped clamping strips, both sides of the seawater and sea sand concrete beam are provided with L-shaped clamping grooves, and both sides of the seawater and sea sand concrete beam are provided with a plurality of groups of screw holes.

[0010] Preferably, the two groups of connecting plates are fixedly connected to the back sides thereof with two groups of T-shaped sliding bars, the T-shaped sliding bars are movably connected in the connecting seats, two groups of limiting holes are opened in the upper ends of the T-shaped sliding bars, and U-shaped clamping rods are provided on the upper sides of the two groups of T-shaped sliding bars, the U-shaped clamping rods are movably connected in the upper ends of the connecting seats, and the lower ends of the U-shaped clamping rods are clamped in the limiting holes.

[0011] Preferably, two sets of sliders are fixedly connected to the outside of the U-shaped clamping rod, the sliders are slidably connected to the connecting cavity, the connecting cavity is opened in the connecting seat, the upper end of the slider is fixedly connected to the first spring, the other end of the first spring is fixedly connected to the connecting cavity, and the outer side of the T-shaped slide bar is sleeved with a push spring, one end of the push spring is fixedly connected to the connecting plate, and the other end is fixedly connected to the connecting seat.

[0012] Preferably, the blocking mechanism includes a T-shaped baffle, one end of the T-shaped baffle is slidably connected in a sliding cavity, the sliding cavity is opened in a connecting seat, one end of the T-shaped baffle close to the sliding cavity is fixedly connected to a pull rope, the end of the pull rope away from the T-shaped baffle is fixedly connected to a group of connecting gears, a second spring is sleeved on the outside of the pull rope, one end of the second spring is fixedly connected to the T-shaped baffle, and the other end is fixedly connected to the sliding cavity.

[0013] Preferably, an extrusion plate is slidably connected in the liquid storage cavity, and two groups of T-shaped connecting rods are fixedly connected to the lower end of the extrusion plate. The lower end of the T-shaped connecting rod is slidably connected in the guide cavity, and the guide cavity is opened in the connecting seat. The lower end of the T-shaped connecting rod is fixedly connected to a connecting spring, and the connecting spring is fixedly connected to the guide cavity away from one end of the T-shaped connecting rod.

[0014] In addition, in order to achieve the above object, the present invention also provides a construction method for the above-mentioned GFRP seawater sand concrete beam-column node, comprising the following steps:

[0015] S1. Place one end of the seawater and sea sand concrete beam in the installation groove. After placement, pull the U-shaped clamping rod upward to disengage the clamping end from the limiting hole in which it is clamped. Under the elastic force of the push spring, the two sets of connecting plates move inward to clamp the L-shaped clamping strip in the L-shaped clamping groove. One end of several sets of screw rods will enter the corresponding screw holes. Release the pulling of the U-shaped clamping rod. Under the elastic force of the first spring, the clamping end of the U-shaped clamping rod is clamped in the limiting hole to limit the T-shaped sliding rod.

[0016] S2. Turn the hand wheel to drive the connecting shaft to rotate, and the rotation of the connecting shaft drives the transmission gear to rotate. During the rotation of the transmission gear, the inner gear ring rotates. During the rotation of the inner gear ring, the connecting gear drives the screw to rotate. Under the rotation of the connecting gear, the screw rotates and is screwed into the screw connection hole to fix and limit the seawater and sea sand concrete beam;

[0017] S3. When all the screws are screwed into the screw holes, the connecting gear will move inward along the inner side of the inner gear ring, and the pull rope connected to a set of connecting gears will be driven to move, so that the T-shaped baffle moves outward. When the T-shaped baffle leaves the obstruction of the liquid guide cavity, the extrusion plate squeezes the sealing liquid into the liquid guide cavity upward under the elastic force of the connecting spring. The sealing liquid entering the liquid guide cavity will enter the installation groove to fill the gap between the seawater and sea sand concrete beam and the connecting plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention places one end of the seawater sand concrete beam in the installation groove, and pulls the U-shaped clamping rod upward so that the connecting plate drives the L-shaped clamping strip to be clamped into the L-shaped clamping groove. After the L-shaped clamping strip is clamped into the L-shaped clamping groove, a sealed cavity is formed between the connecting plate and the seawater sand concrete beam. By turning the hand wheel, the transmission gear drives the internal gear ring connected to it to rotate. The rotation of the internal gear ring causes the connecting gear to rotate, so that the screw is screwed into the corresponding screw connection hole to limit and fix the seawater sand concrete beam. After the screw connection with the screw is completed, the blocking mechanism will cancel the blocking of the liquid guide cavity. At this time, the sealing liquid in the liquid storage cavity will be pushed into the sealed cavity between the connecting plate and the seawater sand concrete beam. After the sealing liquid is solidified, the connection between the screw and the screw connection hole is sealed to prevent water vapor from blowing to the connection between the screw and the screw connection hole in the seawater sand concrete beam for a long time to cause corrosion, and then the seawater sand concrete beam becomes loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the connecting seat of the present invention;

[0020] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the connection relationship between the U-shaped clamping rod and the limiting hole of the present invention;

[0022] Figure 4 It is a schematic diagram of the top-sectional structure of the connection plate of the present invention;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the seawater and sea sand concrete beam in the installation state of the present invention;

[0024] Figure 6 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the connection relationship between the inner gear ring and the connecting gear of the present invention;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the positional relationship between the connecting plate and the seawater and sea sand concrete beam of the present invention;

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] In the figure: 1. seawater and sea sand concrete column; 2. connecting seat; 3. inner gear ring; 4. T-shaped slide bar; 5. installation groove; 6. connecting plate; 7. U-shaped clamping rod; 8. pull rope; 9. liquid storage chamber; 10. extrusion plate; 11. T-shaped connecting rod; 12. connecting spring; 13. screw rod; 14. tooth groove; 15. hand wheel; 16. L-shaped clamping strip; 17. connecting shaft; 18. transmission gear; 19. T-shaped baffle; 20. liquid guide chamber; 21. second spring; 22. sliding chamber; 23. seawater and sea sand concrete beam; 24. L-shaped clamping groove; 25. screw hole; 26. limit hole; 27. connecting gear; 28. slide block; 29. ​​first spring; 30. connecting chamber; 31. cavity; 32. guide chamber; 33. push spring. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1 -9. The present invention provides a technical solution:

[0031] Embodiment 1:

[0032] A GFRP seawater sand concrete beam-column node, comprising a node structure for installing a seawater sand concrete column 1 and a seawater sand concrete beam 23, the outer surfaces of the seawater sand concrete column 1 and the seawater sand concrete beam 23 are both provided with a GFRP material layer, the GFRP material layer is a composite material composed of glass fiber and resin, and its shape and other requirements can be molded, wrapped around the seawater sand concrete column 1 and the seawater sand concrete beam 23 outer surface, can play a lighter, higher strength, corrosion resistance and other excellent performance, the node structure comprises four groups of connecting seats, the four groups of connecting seats are fixedly arranged around the outer side of the seawater sand concrete column, and the upper end of the connecting seat 2 is provided with an installation groove 5, two groups of connecting plates 6 are movably connected in the installation groove 5, a cavity 31 is provided in the connecting plate 6, an inner gear ring 3 is movably connected in the cavity 31, a plurality of connecting gears 27 are meshed on the inner side of the inner gear ring 3, one end of the connecting gear 27 is fixedly connected to a screw 13, the end of the screw 13 away from the connecting gear 27 penetrates the connecting plate 6 and extends into the installation groove 5, during the rotation of the inner gear ring 3, the connecting gear 27 will drive the screw 13 to start rotating, since one end of the screw 13 is located in the screw connection hole 25, at this time, under the rotation of the connecting gear 27, the screw 13 will rotate and be screwed into the screw connection hole 25, and as the screw 13 continuously enters the screw connection hole 25, the connecting gear 27 will also move along the inner gear ring 3;

[0033] A tooth groove 14 is provided inside the outer side of the inner gear ring 3, and a transmission gear 18 is meshed at the lower side of the tooth groove 14. The transmission gear 18 is sleeved on the outer side of the connecting shaft 17, and the connecting shaft 17 is movably connected to the connecting seat 2. One end of the connecting shaft 17 extends out of the connecting seat 2 and is fixedly connected to the hand wheel 15. The hand wheel 15 is turned to drive the connecting shaft 17 connected thereto to start rotating, and the connecting shaft 17 rotates to drive the transmission gear 18 connected to the outer side thereof to start rotating. Since the transmission gear 18 is meshed in the tooth groove 14, the inner gear ring 3 will start rotating during the rotation of the transmission gear 18. At the same time, when the connecting plate 6 drives the inner gear ring 3 to move inward, the transmission gear 18 will move along the tooth groove 14, so that after the L-shaped clamping strip 16 is clamped into the L-shaped clamping groove 24, the transmission gear 18 can still drive the inner gear ring 3 to rotate;

[0034] The opposite surfaces of the two groups of connecting plates 6 are fixedly connected with L-shaped card strips 16, and L-shaped card grooves 24 are provided on both sides of the seawater sea sand concrete beam 23. When the L-shaped card strip 16 enters the L-shaped card groove 24, a sealed cavity will be formed between the seawater sea sand concrete beam 23 and the connecting plate 6. Several groups of screw holes 25 are provided on both sides of the seawater sea sand concrete beam 23. A liquid storage cavity 9 is provided in the lower end of the connecting seat 2, and a sealing liquid is provided in the liquid storage cavity 9. Several groups of liquid guide cavities 20 are provided in the upper end of the liquid storage cavity 9. The liquid guide cavity 20 extends away from one end of the liquid storage cavity 9 to the mounting groove 5. Two groups of resistances are provided on the upper side of the liquid storage cavity 9. The blocking mechanism is fixedly connected to a group of connecting gears 27 at one end away from the liquid storage chamber 9. The blocking mechanism blocks the liquid guiding chamber 20 so that the sealing liquid in the liquid storage chamber 9 will not enter the liquid guiding chamber 20. When a group of screws 13 connected to the blocking mechanism are completely screwed into the screw hole 25, the blocking mechanism will cancel the blocking of the liquid guiding chamber 20, and the sealing liquid in the liquid storage chamber 9 will be pushed into the sealing chamber between the seawater and sea sand concrete beam 23 and the connecting plate 6. After the sealing liquid entering the sealing chamber is solidified, the connection between the screw 13 and the screw hole 25 is sealed.

[0035] Embodiment 2:

[0036] On the basis of Example 1, in order to prevent the sealing liquid in the liquid storage chamber 9 from entering the installation groove 5 when the seawater and sea sand concrete beam 23 is not installed, the blocking mechanism includes a T-shaped baffle 19, one end of the T-shaped baffle 19 is slidably connected to the sliding chamber 22, and the sliding chamber 22 is opened in the connecting seat 2. The end of the T-shaped baffle 19 close to the sliding chamber 22 is fixedly connected to a pull rope 8, and the end of the pull rope 8 away from the T-shaped baffle 19 is fixedly connected to a group of connecting gears 27, and the outer side of the pull rope 8 is sleeved with The second spring 21, one end of the second spring 21 is fixedly connected to the T-shaped baffle 19, and the other end is fixedly connected to the sliding cavity 22. An extrusion plate 10 is slidably connected in the liquid storage cavity 9, and two groups of T-shaped connecting rods 11 are fixedly connected at the lower end of the extrusion plate 10. The lower end of the T-shaped connecting rod 11 is slidably connected in the guide cavity 32. The guide cavity 32 is opened in the connecting seat 2. The lower end of the T-shaped connecting rod 11 is fixedly connected to a connecting spring 12, and the connecting spring 12 is fixedly connected to the guide cavity 32 at one end away from the T-shaped connecting rod 11. When all the screw rods 13 are screwed into the screw holes 25, the connecting gear 27 will move inward along the inner side of the inner gear ring 3. At this time, the pull rope 8 connected to a group of connecting gears 27 will be driven to move. The movement of the pull rope 8 drives the T-shaped baffle 19 to move outward. When the T-shaped baffle 19 leaves the obstruction of the liquid guiding cavity 20, the T-shaped connecting rod 11 moves upward under the elastic force of the connecting spring 12. At this time, the extrusion plate 10 moves upward to squeeze the sealing liquid into the liquid guiding cavity 20. The sealing liquid entering the liquid guiding cavity 20 will enter the mounting groove 5.

[0037] The two groups of connecting plates 6 are fixedly connected to two groups of T-shaped slide bars 4 on the back side, and the T-shaped slide bars 4 are movably connected to the connecting seat 2. Two groups of limiting holes 26 are opened in the upper end of the T-shaped slide bars 4. U-shaped clamping rods 7 are provided on the upper sides of the two groups of T-shaped slide bars 4. The U-shaped clamping rods 7 are movably connected to the upper end of the connecting seat 2. The lower ends of the U-shaped clamping rods 7 are clamped in the limiting holes 26. The U-shaped clamping rods 7 are pulled upward to disengage the clamping ends from the limiting holes 26 in which they are clamped. The two groups of connecting plates 6 move inward so that the L-shaped clamping strips 16 are clamped in the L-shaped clamping grooves 24. The outer sides of the U-shaped clamping rods 7 are fixedly connected to Two groups of sliders 28, the sliders 28 are slidably connected in the connecting cavity 30, the connecting cavity 30 is opened in the connecting seat 2, the upper end of the slider 28 is fixedly connected with the first spring 29, the other end of the first spring 29 is fixedly connected to the connecting cavity 30, and a push spring 33 is sleeved on the outer side of the T-shaped slide bar 4, one end of the push spring 33 is fixedly connected to the connecting plate 6, and the other end is fixedly connected to the connecting seat 2, and the pulling of the U-shaped clamping rod 7 is released. Under the elastic force of the first spring 29, the clamping end of the U-shaped clamping rod 7 will be clamped in another group of limiting holes 26, and the T-shaped slide bar 4 is limited at this time.

[0038] In addition, in order to achieve the above object, the present invention also provides a construction method for the above GFRP seawater sand concrete beam-column node, comprising the following steps:

[0039] S1. Place one end of the seawater and sea sand concrete beam 23 in the installation groove 5. After placement, pull the U-shaped clamping rod 7 upward to disengage the clamping end from the limiting hole 26 in which it is clamped. Under the elastic force of the push spring 33, the two groups of connecting plates 6 move inward to make the L-shaped clamping strip 16 clamped in the L-shaped clamping groove 24. One end of several groups of screw rods 13 will enter the corresponding screw holes 25. Release the pulling of the U-shaped clamping rod 7. Under the elastic force of the first spring 29, the clamping end of the U-shaped clamping rod 7 clamps in the limiting hole 26 to limit the T-shaped sliding rod 4.

[0040] S2, turning the hand wheel 15 drives the connecting shaft 17 to rotate, and the connecting shaft 17 drives the transmission gear 18 to rotate. During the rotation of the transmission gear 18, the inner gear ring 3 rotates. During the rotation of the inner gear ring 3, the connecting gear 27 drives the screw 13 to rotate. Under the rotation of the connecting gear 27, the screw 13 rotates and is screwed into the screw hole 25, so as to fix and limit the seawater and sea sand concrete beam 23;

[0041] S3. When all the screw rods 13 are screwed into the screw holes 25, the connecting gear 27 will move inward along the inner side of the inner gear ring 3, and the pull rope 8 connected to a group of connecting gears 27 will be driven to move, so that the T-shaped baffle 19 moves outward. When the T-shaped baffle 19 leaves the obstruction of the liquid guiding cavity 20, the extrusion plate 10 squeezes the sealing liquid into the liquid guiding cavity 20 upward under the elastic force of the connecting spring 12. The sealing liquid entering the liquid guiding cavity 20 will enter the installation groove 5 to fill the gap between the seawater and sea sand concrete beam 23 and the connecting plate 6.

[0042] Working principle: when in use, place one end of the seawater and sea sand concrete beam 23 in the installation groove 5. After placement, pull the U-shaped clamping rod 7 upward to make the clamping end disengage from the limiting hole 26 in which it is clamped. At this time, under the elastic force of the push spring 33, the two groups of connecting plates 6 move inward to make the L-shaped clamping strip 16 clamped in the L-shaped clamping groove 24. At the same time, one end of several groups of screw rods 13 will enter the corresponding screw holes 25. At this time, release the pulling of the U-shaped clamping rod 7. Under the elastic force of the first spring 29, the clamping end of the U-shaped clamping rod 7 will be clamped in another group of limiting holes 26. At this time, the T-shaped slide bar 4 is limited;

[0043] The hand wheel 15 is turned to drive the connecting shaft 17 connected thereto to start rotating, and the connecting shaft 17 rotates to drive the transmission gear 18 connected to its outer side to start rotating. Since the transmission gear 18 is meshed in the tooth groove 14, during the rotation of the transmission gear 18, the inner gear ring 3 will start rotating. Since there are several groups of connecting gears 27 meshed on the inner side of the inner gear ring 3, during the rotation of the inner gear ring 3, the connecting gear 27 will drive the screw rod 13 to start rotating. Since one end of the screw rod 13 is located in the screw connection hole 25, under the rotation of the connecting gear 27, the screw rod 13 will rotate and be screwed into the screw connection hole 25, and the seawater and sea sand concrete beam 23 will be fixed and limited. When all the screw rods 13 are screwed into the screw connection hole 25, the connecting gear 27 will move inward along the inner side of the inner gear ring 3, and the pull rope 8 connected to a group of connecting gears 27 will be driven to move.

[0044] The movement of the pull rope 8 drives the T-shaped baffle 19 to move outward. When the T-shaped baffle 19 leaves the obstruction of the liquid guiding cavity 20, the T-shaped connecting rod 11 moves upward under the elastic force of the connecting spring 12. At this time, the extrusion plate 10 moves upward to squeeze the sealing liquid into the liquid guiding cavity 20. The sealing liquid entering the liquid guiding cavity 20 will enter the installation groove 5. The sealing liquid enters the installation groove 5 to fill the gap between the seawater and sea sand concrete beam 23 and the connecting plate 6. After the sealing liquid solidifies, the connection between the screw 13 and the screw hole 25 is sealed, and the remaining seawater and sea sand concrete beams 23 can be installed according to the above method.

[0045] 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 seawater sand concrete beam-column node, comprising a node structure for installing a seawater sand concrete column and a seawater sand concrete beam, wherein the outer surface of the seawater sand concrete column and the seawater sand concrete beam are both provided with a GFRP material layer, wherein the GFRP material layer is a composite material composed of glass fiber and resin, and is characterized in that: The node structure comprises four groups of connection seats, which are fixedly arranged around the outer side of the seawater and sea sand concrete column. An installation groove is provided in the upper end of the connection seat, and two groups of connection plates are movably connected in the installation groove. A cavity is provided in the connection plate, and an inner gear ring is movably connected in the cavity. A plurality of groups of connection gears are meshed on the inner side of the inner gear ring. A screw is fixedly connected to one end of the connection gear, and the end of the screw away from the connection gear penetrates the connection plate and extends into the installation groove. A tooth groove is provided in the outer side of the inner gear ring, and a transmission gear is meshed on the lower side of the tooth groove. The transmission gear is sleeved on the outside of the connecting shaft, and the connecting shaft is movably connected to the connecting seat. One end of the connecting shaft extends out of the connecting seat and is fixedly connected to the hand wheel. A liquid storage cavity is provided in the lower end of the connecting seat, and a plurality of groups of liquid guide cavities are provided in the upper end of the liquid storage cavity. The liquid guide cavity extends into the mounting groove away from one end of the liquid storage cavity. Two groups of blocking mechanisms are provided on the upper side of the liquid storage cavity. The blocking mechanism is fixedly connected to a group of connecting gears at one end away from the liquid storage cavity. The liquid guide cavity is blocked by the blocking mechanism, so that the sealing liquid in the liquid storage cavity will not enter the liquid guide cavity. The opposite surfaces of the two groups of connecting plates are fixedly connected with L-shaped clamping strips, both sides of the seawater and sea sand concrete beam are provided with L-shaped clamping grooves, and both sides of the seawater and sea sand concrete beam are provided with a plurality of groups of screw holes.

2. A GFRP seawater sand concrete beam-column joint according to claim 1, characterized in that: Two groups of T-shaped sliding bars are fixedly connected to the back sides of the two groups of connecting plates, and the T-shaped sliding bars are movably connected in the connecting seats. Two groups of limiting holes are opened in the upper ends of the T-shaped sliding bars. U-shaped clamping rods are provided on the upper sides of the two groups of T-shaped sliding bars. The U-shaped clamping rods are movably connected in the upper ends of the connecting seats, and the lower ends of the U-shaped clamping rods are clamped in the limiting holes.

3. A GFRP seawater sand concrete beam-column joint according to claim 2, characterized in that: Two groups of sliders are fixedly connected to the outside of the U-shaped clamping rod, and the sliders are slidably connected to the connecting cavity, and the connecting cavity is opened in the connecting seat. The upper end of the slider is fixedly connected to a first spring, and the other end of the first spring is fixedly connected to the connecting cavity. A push spring is sleeved on the outside of the T-shaped sliding rod, and one end of the push spring is fixedly connected to the connecting plate, and the other end is fixedly connected to the connecting seat.

4. A GFRP seawater sand concrete beam-column joint according to claim 1, characterized in that: The blocking mechanism includes a T-shaped baffle, one end of the T-shaped baffle is slidably connected in a sliding cavity, the sliding cavity is opened in a connecting seat, one end of the T-shaped baffle close to the sliding cavity is fixedly connected to a pull rope, the end of the pull rope away from the T-shaped baffle is fixedly connected to a group of connecting gears, a second spring is sleeved on the outside of the pull rope, one end of the second spring is fixedly connected to the T-shaped baffle, and the other end is fixedly connected to the sliding cavity.

5. The GFRP seawater sand concrete beam-column joint according to claim 1, characterized in that: An extrusion plate is slidably connected in the liquid storage cavity, and two groups of T-shaped connecting rods are fixedly connected to the lower end of the extrusion plate. The lower end of the T-shaped connecting rod is slidably connected in the guide cavity, and the guide cavity is opened in the connecting seat. A connecting spring is fixedly connected to the lower end of the T-shaped connecting rod, and the connecting spring is fixedly connected to the guide cavity at one end away from the T-shaped connecting rod.

6. A construction method, characterized in that: Based on the GFRP seawater sand concrete beam-column node according to any one of claims 1 to 5, the seawater sand concrete column and the seawater sand concrete beam are installed, comprising the following steps: S1. Place one end of the seawater and sea sand concrete beam in the installation groove. After placement, pull the U-shaped clamping rod upward to disengage the clamping end from the limiting hole in which it is clamped. Under the elastic force of the push spring, the two sets of connecting plates move inward to clamp the L-shaped clamping strip in the L-shaped clamping groove. One end of several sets of screw rods will enter the corresponding screw holes. Release the pulling of the U-shaped clamping rod. Under the elastic force of the first spring, the clamping end of the U-shaped clamping rod is clamped in the limiting hole to limit the T-shaped sliding rod. S2. Turn the hand wheel to drive the connecting shaft to rotate, and the rotation of the connecting shaft drives the transmission gear to rotate. During the rotation of the transmission gear, the inner gear ring rotates. During the rotation of the inner gear ring, the connecting gear drives the screw to rotate. Under the rotation of the connecting gear, the screw rotates and is screwed into the screw connection hole to fix and limit the seawater and sea sand concrete beam; S3. When all the screws are screwed into the screw holes, the connecting gear will move inward along the inner side of the inner gear ring, and the pull rope connected to a set of connecting gears will be driven to move, so that the T-shaped baffle moves outward. When the T-shaped baffle leaves the obstruction of the liquid guide cavity, the extrusion plate squeezes the sealing liquid into the liquid guide cavity upward under the elastic force of the connecting spring. The sealing liquid entering the liquid guide cavity will enter the installation groove to fill the gap between the seawater and sea sand concrete beam and the connecting plate.

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