Prestressed composite beam structure and mounting method

Abstract

The invention discloses a prestressed composite beam structure and a mounting method, and relates to the technical field of bridge construction. The device comprises a bridge concrete abutment, a plurality of top beams are evenly and fixedly connected to the bottom of the bridge concrete abutment, supporting columns are symmetrically and fixedly connected to the bottoms of the top beams, triangular tables are fixedly connected to the opposite sides of every two adjacent supporting columns, and a prestressed concrete abutment is erected on the tops of the triangular tables. When the load received by the bridge concrete abutment is transmitted to the prestressed concrete abutment through the top beam and the diagonal bracing steel beam, part of the load borne by the prestressed concrete abutment is counteracted through tensioning of the prestressed tendons; and meanwhile, the stress rod is pushed to drive the supporting plate to convert partial load borne by the supporting beam into collision force between the supporting plate and the prestressed concrete base station, so that the load applied externally can be conveniently and effectively dispersed to the supporting columns, the prestressed tendons and the supporting plate for bearing, and the bearing stability of the device is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a prestressed composite beam structure and an installation method. Background Art

[0002] In the field of construction and bridge engineering, prestressing technology, as a key engineering technology, has always been regarded as an important means to improve structural performance. This technology greatly enhances the bearing capacity and stability of the structure by pre-applying tensile stress inside the structural member to balance part or all of the tensile stress caused by external loads. Among them, prestressed composite beams, as an efficient structural form, have been widely used due to their superior mechanical properties and economy.

[0003] The design principle of prestressed composite beams is to effectively combine prestressed tendons with concrete beams, and form a prestressed stress field inside the beams through the tensioning action of the prestressed tendons. This prestressed stress field can significantly improve the crack resistance and rigidity of the beams, thereby enhancing the bearing capacity and stability of the entire structure.

[0004] Traditional prestressed composite beams are usually realized by reserving holes inside the beam body, and then passing the prestressed tendons through the holes for tensioning and anchoring. Since the prestressed tendons pass directly through the beam body, when the beam body is subjected to external forces generated by external factors such as vibration or strong wind, the prestressed tendons are prone to displacement or sliding, which in turn affects the stability of the entire structure. Summary of the invention

[0005] The purpose of the present application is to solve the problem that the prestressed tendons directly pass through the beam body, causing the prestressed tendons to easily move or slide when the beam body is subjected to external forces generated by external factors such as vibration or strong wind, thereby affecting the stability of the entire structure. The present application provides a prestressed composite beam structure and an installation method.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A prestressed composite beam structure comprises a bridge concrete base, wherein a plurality of top beams are evenly fixedly connected to the bottom of the bridge concrete base, a support column is symmetrically fixedly connected to the bottom of the top beam, a triangular platform is fixedly connected to the opposite sides of two adjacent support columns, a prestressed concrete base is erected on the top of the triangular platform, a plurality of prestressed tendons are evenly arranged inside the prestressed concrete base, a diagonal bracing steel beam is symmetrically fixedly connected to the bottom of the top beam, the bottom end of the diagonal bracing steel beam is fixedly connected to the prestressed concrete base, a joist is arranged between two adjacent support columns, the joist is installed below the prestressed concrete base, a lifting slot is provided at one end of the joist, a force-bearing rod is inserted into the lifting slot, the top of the force-bearing rod is in conflict with the prestressed concrete base, a support plate is symmetrically installed at one end of the joist, and a transmission mechanism for driving the support plate to form a conflict with the prestressed concrete base is symmetrically installed at one end of the joist, and a locking assembly for fixing the triangular platform and the joist is installed at one end of the support column.

[0007] By adopting the above technical scheme and setting up the coordinated use of the locking assembly and the transmission mechanism, it is convenient to use the tensioning of the prestressed tendons to offset part of the load borne by the prestressed concrete base when the load received by the bridge concrete base is transferred to the prestressed concrete base by using the top beam and the diagonal bracing steel beam, and at the same time, the force-bearing rod is pushed to drive the support plate to convert part of the load borne by the support beam into the resistance force between the support plate and the prestressed concrete base, so as to effectively disperse the externally applied load to the support column, prestressed tendons and support plate for bearing, thereby effectively improving the bearing stability of the device.

[0008] Furthermore, the transmission mechanism includes a pair of guide slide bars symmetrically fixedly connected to one end of the supporting beam, one end of two adjacent guide slide bars is fixedly connected to a connecting plate, one end of the guide slide bar is slidably connected to a transmission slide plate, one end of the force-bearing rod is symmetrically hinged with a transmission rod 1, the other end of the transmission rod 1 is hinged to the transmission slide plate, the top of the transmission slide plate is hinged with a transmission rod 2, the middle section of the transmission rod 2 is hinged with a transmission rod 3, one end of the transmission rod 3 is hinged to the connecting plate, the top of the transmission rod 2 is hinged to the support plate, one end of the connecting plate is equipped with a guide component for guiding the support plate to move along the length direction of the force-bearing rod, and one end of the connecting plate is equipped with a follower component for guiding the support plate to move along the length direction of the guide slide bar.

[0009] By adopting the above technical scheme and setting up the coordinated use of the guiding assembly and the following assembly, when the prestressed concrete base transfers the load received to the stress rod, the stress rod drives the two transmission rods one to push the transmission rod two around the hinge axis to drive the transmission slide plate to move along the length direction of the guide slide bar, and cooperates with the transmission rod three to push the support plate upward along the length direction of the stress rod to resist the prestressed concrete base, so that the stress rod converts part of the load received by the prestressed concrete base into the resistance and support force of the support plate on the prestressed concrete base, thereby weakening part of the load received by the prestressed concrete base and further improving the stability of the device.

[0010] Furthermore, the guide assembly includes a guide block arranged on one side of the connecting plate, a guide through hole is opened at one end of the guide block, a guide slide rod is slidably inserted inside the guide through hole, and the top of the guide slide rod is fixedly connected to the support plate.

[0011] By adopting the above technical solution, by setting the coordinated use of the guide through-hole and the guide slide rod, when the driving transmission rod is driven to push the support plate around the hinge axis to form a conflict with the prestressed concrete base, the support plate drives the guide slide rod to pass through the guide through-hole and guides the support plate to move along the length direction of the guide slide rod, thereby further improving the stability of the device.

[0012] Furthermore, the follower assembly includes a follower slide groove provided at one end of the connecting plate, and one end of the guide block is symmetrically fixedly connected with a follower slider adapted to the follower slide groove.

[0013] By adopting the above technical solution, by setting the coordinated use of the follower slide groove and the follower slider, it is convenient for the support plate to drive the guide slide rod to push the follower slider to move along the length direction of the follower slide groove when the driving transmission rod is pushed out around the hinge axis, thereby effectively improving the smoothness of the device.

[0014] Furthermore, a lifting spring is provided on the outer sleeve of the guide slide bar, and the lifting spring is installed between the connecting plate and the transmission slide plate.

[0015] By adopting the above technical solution, by setting the jacking spring and the connecting plate and the transmission slide plate for use in conjunction, it is convenient to utilize the rebound characteristics of the jacking spring to push the transmission slide plate to move away from the connecting plate, and drive the top end of the force-bearing rod to form a conflict with the bottom of the prestressed concrete base, thereby improving the practicality of the device.

[0016] Furthermore, the locking assembly includes a plurality of adjustment holes evenly opened at one end of the support column, a pair of locking holes 1 adapted to the adjustment holes are opened at one end of the tripod, a pair of locking holes 2 adapted to the adjustment holes are symmetrically opened at one end of the support beam, a locking screw is inserted into the inside of the adjustment hole, one end of the locking screw passes through the adjustment hole and locking hole 1 or locking hole 2, and is threadedly connected with a locking nut.

[0017] By adopting the above technical scheme, by setting the adjustment hole and the locking hole one, locking hole two, locking screw and locking nut for coordinated use, it is convenient to drive the locking hole one or locking hole two to align with the corresponding adjustment hole by pulling the tripod or the supporting beam according to the actual situation, and then cooperate with the locking screw and locking nut to realize the rapid fixed connection between the support column and the tripod and the supporting beam, thereby effectively improving the scope of application and practicality of the device.

[0018] Furthermore, the surfaces of the top beam, support columns, diagonal steel beams and support beams are all coated with organic silicon waterproof coating.

[0019] By adopting the above technical solution and providing an organic silicon waterproof coating, the corrosion resistance of the device is effectively improved and the service life of the device is extended.

[0020] A method for installing a prestressed composite beam structure, comprising: S1: First, a support column is fixed on the foundation, and a top beam is fixed on the top of the support column using bolts and other parts, and then the concrete base of the bridge is constructed with the top beam as a fulcrum; S2: Then, a locking assembly is used to fix and connect the triangular platform on opposite sides of two adjacent support columns, and a prestressed concrete base is set on the top of the triangular platform, and a plurality of prestressed tendons for applying prestress are arranged inside the prestressed concrete base; S3: Then, the diagonal bracing steel beam is symmetrically fixedly connected to the bottom of the top beam, and the bottom of the diagonal bracing steel beam is fixedly abutted against the prestressed concrete base; S4: Then use the locking assembly to fix the support beam between two adjacent support columns, so that the support beam drives the load-bearing rod to form a conflict with the prestressed concrete base, and at the same time, when the load-bearing rod is subjected to the resistance force of the prestressed concrete base, it cooperates with the transmission mechanism to drive the support plate to form a conflict with the prestressed concrete base.

[0021] In summary, the present application includes at least one of the following beneficial effects: 1. By setting up the locking assembly and the transmission mechanism for coordinated use, when the top beam and the diagonal steel beam are used to transfer the load received by the bridge concrete base to the prestressed concrete base, the tensioning of the prestressed tendons can be used to offset part of the load borne by the prestressed concrete base. At the same time, the force-bearing rod is pushed to drive the support plate to convert part of the load borne by the support beam into the resistance force between the support plate and the prestressed concrete base, so as to effectively disperse the external load to the support column, prestressed tendons and support plate for bearing, and effectively improve the bearing stability of the device.

[0022] 2. By setting up the coordinated use of the guiding assembly and the following assembly, when the prestressed concrete base transfers the load received to the load-bearing rod, the load-bearing rod drives the two transmission rods 1 to push the transmission rod 2 around the hinge shaft to drive the transmission slide plate to move along the length direction of the guide slide bar, and cooperates with the transmission rod 3 to push the support plate upward along the length direction of the load-bearing rod to resist the prestressed concrete base, so that the load-bearing rod converts part of the load received by the prestressed concrete base into the resistance and support force of the support plate on the prestressed concrete base, thereby weakening part of the load received by the prestressed concrete base and further improving the stability of the device.

[0023] 3. By setting the adjustment hole and the locking hole one, locking hole two, locking screw and locking nut for coordinated use, it is convenient to align the locking hole one or locking hole two with the corresponding adjustment hole by pulling the tripod or the support beam according to the actual situation, and then cooperate with the locking screw and locking nut to realize the fast fixed connection between the support column and the tripod and the support beam, which effectively improves the scope of application and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0025] Figure 2 It is a schematic diagram of the connection structure between the support column and the tripod in this application.

[0026] Figure 3 It is a schematic diagram of the top structure of the joist in this application.

[0027] Figure 4 It is a schematic diagram of the internal structure of the follower slide in this application.

[0028] Description of reference numerals: 1. Bridge concrete base; 2. Top beam; 3. Support column; 4. Triangle platform; 5. Prestressed concrete base; 6. Prestressed tendons; 7. Diagonal bracing steel beam; 8. Support beam; 9. Lifting slot; 10. Force rod; 11. Support plate; 12. Guide slide bar; 13. Connecting plate; 14. Transmission slide plate; 15. Transmission rod one; 16. Transmission rod two; 17. Transmission rod three; 18. Guide block; 19. Guide perforation; 20. Guide slide bar; 21. Follow-up slide groove; 22. Follow-up slide block; 23. Lifting spring; 24. Adjustment hole; 25. Locking hole one; 26. Locking hole two; 27. Locking screw; 28. Locking nut. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The embodiments of the present application disclose a prestressed composite beam structure and an installation method.

[0031] Reference Figure 1-Figure 3 A prestressed composite beam structure includes a bridge concrete base 1, a plurality of top beams 2 are evenly fixedly connected to the bottom of the bridge concrete base 1, a support column 3 is symmetrically fixedly connected to the bottom of the top beam 2, a triangular platform 4 is fixedly connected to the opposite sides of two adjacent support columns 3, a prestressed concrete base 5 is erected on the top of the triangular platform 4, a plurality of prestressed tendons 6 are evenly arranged inside the prestressed concrete base 5, a diagonal bracing steel beam 7 is symmetrically fixedly connected to the bottom of the top beam 2, and the bottom end of the diagonal bracing steel beam 7 is fixedly connected to the prestressed concrete base 5 A joist 8 is arranged between two adjacent support columns 3, and the joist 8 is installed under the prestressed concrete base 5. A lifting slot 9 is opened at one end of the joist 8, and a force-bearing rod 10 is inserted inside the lifting slot 9. The top of the force-bearing rod 10 forms a conflict with the prestressed concrete base 5. A support plate 11 is symmetrically installed at one end of the joist 8, and a transmission mechanism for driving the support plate 11 to form a conflict with the prestressed concrete base 5 is symmetrically installed at one end of the joist 8. A locking component for fixing the tripod 4 and the joist 8 is installed at one end of the support column 3.

[0032] When in use, firstly, the tensioning equipment is used to apply prestress to the multiple prestressed tendons 6 uniformly arranged inside the prestressed concrete base 5, and then the diagonal steel beam 7 is used to disperse and transfer the load borne by the bridge concrete base 1 to the top of the prestressed concrete base 5, and at the same time, the prestressed tendons 6 are tensioned to generate a reaction force with the pressure on the top of the prestressed concrete base 5, offsetting part of the load borne by the prestressed concrete base 5, so as to enhance the bearing capacity and crack resistance of the prestressed concrete base 5; And while the top beam 2 transfers the load to the prestressed concrete base 5, the bottom end of the prestressed concrete base 5 is in conflict with the load-bearing rod 10, and the load-bearing rod 10 is pushed to drive the support plate 11 to form a conflict with the bottom of the prestressed concrete base 5, thereby facilitating the conversion of part of the load transferred from the prestressed concrete base 5 to the load-bearing rod 10 into a resistance force between the support plate 11 and the prestressed concrete base 5, further improving the bearing capacity and stability of the prestressed concrete base 5, so that when the external load acts on the concrete base 1 of the bridge, the coordinated use of the diagonal bracing steel beam 7 and the supporting beam 8, the load-bearing rod 10, and the support plate 11 can be used to effectively disperse the externally applied load to the support column 3, the prestressed tendons 6, and the support plate 11 for bearing, thereby effectively improving the bearing stability of the device.

[0033] Reference Figure 2-Figure 4 The transmission mechanism includes a pair of guide slide bars 12 symmetrically fixedly connected to one end of the supporting beam 8, one end of two adjacent guide slide bars 12 is fixedly connected to a connecting plate 13, one end of the guide slide bar 12 is slidably connected to a transmission slide plate 14, one end of the force-bearing rod 10 is symmetrically hinged with a transmission rod 15, the other end of the transmission rod 15 is hinged to the transmission slide plate 14, the top of the transmission slide plate 14 is hinged with a transmission rod 2 16, the middle section of the transmission rod 2 16 is hinged with a transmission rod 3 17, one end of the transmission rod 3 17 is hinged to the connecting plate 13, the top of the transmission rod 2 16 is hinged to the support plate 11, one end of the connecting plate 13 is equipped with a guide component for guiding the support plate 11 to move along the length direction of the force-bearing rod 10, and one end of the connecting plate 13 is equipped with a follower component for guiding the support plate 11 to move along the length direction of the guide slide bar 12.

[0034] The guide assembly includes a guide block 18 arranged on one side of the connecting plate 13 , a guide through hole 19 is opened at one end of the guide block 18 , a guide slide rod 20 is slidably inserted inside the guide through hole 19 , and the top of the guide slide rod 20 is fixedly connected to the support plate 11 .

[0035] Furthermore, the follower assembly includes a follower slot 21 provided at one end of the connecting plate 13 , and a follower slider 22 adapted to the follower slot 21 is symmetrically fixedly connected to one end of the guide block 18 .

[0036] When in use, first use the locking assembly to fix the support beam 8 between the two adjacent support columns 3, and drive the load-bearing rod 10 to form a conflict with the bottom of the prestressed concrete base 5. When the prestressed concrete base 5 is subjected to the load transmitted by the diagonal bracing steel beam 7, the prestressed concrete base 5 pushes the load-bearing rod 10 to move downward along the length direction of the lifting slot 9, and at the same time, the load-bearing rod 10 drives the two transmission rods 15 to move away from each other around the hinge axis, and pushes the transmission slide plate 14 to drive the transmission rod 2 16 to move along the length direction of the guide slide bar 12, and at the same time, the transmission rod 2 16 drives the transmission rod 3 17 to push the support plate 11 upward along the length direction of the guide slide bar 20 around the hinge axis, and drives the support plate 11 to form a conflict with the bottom of the prestressed concrete base 5, so that the load-bearing rod 10 converts part of the load received by the prestressed concrete base 5 into the conflicting support force of the support plate 11 on the prestressed concrete base 5, thereby weakening part of the load received by the prestressed concrete base 5, and further improving the stability of the device; While driving the second transmission rod 16 to push the support plate 11 upward around the hinge axis, the support plate 11 drives the guide slide bar 20 to slide inside the guide perforation 19, thereby guiding the support plate 11 to move along the length direction of the guide slide bar 20. At the same time, when the support plate 11 is pushed out around the hinge axis by the second transmission rod 16, it will also push the guide slide bar 20 to drive the guide block 18 to drive the follower slide bar 22 to move along the length direction of the follower slide groove 21, thereby ensuring the smoothness and stability of the movement of the support plate 11.

[0037] Reference Figure 2-Figure 4 The outer sleeve of the guide slide rod 12 is provided with a lifting spring 23, and the lifting spring 23 is installed between the connecting plate 13 and the transmission slide plate 14.

[0038] When in use, the rebound characteristic of the lifting spring 23 is utilized to make the lifting spring 23 rebound along the length direction of the guide slide bar 12 to push out the transmission slide plate 14, and the transmission slide plate 14 drives the transmission rod 15 to push out the force-bearing rod 10 around the hinge axis, and at the same time pushes the force-bearing rod 10 along the length direction of the lifting slot 9 to form a conflict with the prestressed concrete base 5, thereby effectively improving the practicability of the device.

[0039] Reference Figure 1 and Figure 2 The locking assembly includes a plurality of adjustment holes 24 evenly arranged at one end of the support column 3, a pair of locking holes 25 adapted to the adjustment holes 24 are arranged at one end of the tripod 4, a pair of locking holes 26 adapted to the adjustment holes 24 are symmetrically arranged at one end of the support beam 8, a locking screw 27 is inserted into the interior of the adjustment hole 24, one end of the locking screw 27 passes through the adjustment hole 24 and the locking hole 1 25 or the locking hole 26, and is threadedly connected with a locking nut 28.

[0040] When in use, first, the tripod 4 is pulled to move to a suitable position along the length direction of the support column 3, and the locking hole 25 is driven to align with the corresponding adjustment hole 24, and then one end of the locking screw 27 is pulled through the adjustment hole 24 and the locking hole 25, and the locking nut 28 is tightened so that the locking nut 28 is locked and fixed with the support column 3 along the length direction of the locking screw 27, thereby realizing the fixed connection between the tripod 4 and the support column 3; Then, the second locking hole 26 is driven to align with the corresponding adjustment hole 24 along the length direction of the support column 3 by pulling the joist 8, and the force-bearing rod 10 is driven to form a conflict with the bottom of the prestressed concrete base 5, and then one end of the locking screw 27 is pulled through the adjustment hole 24 and the second locking hole 26, and the locking nut 28 is tightened so that the locking nut 28 is locked and fixed with the support column 3 along the length direction of the locking screw 27, thereby realizing the fixed connection between the joist 8 and the support column 3; This facilitates the rapid fixed connection between the support column 3 and the triangular platform 4 and the support beam 8 along the length direction of the support column 3 according to actual conditions, thereby effectively improving the application scope and practicality of the device.

[0041] Reference Figure 1 and Figure 2 The surfaces of the top beam 2, the supporting column 3, the diagonal steel beam 7 and the supporting beam 8 are all coated with organic silicon waterproof coating.

[0042] When in use, a silicone waterproof coating is applied on the surface of the top beam 2, the support column 3, the diagonal bracing steel beam 7, and the supporting beam 8, so that a layer of anti-corrosion coating is formed on the surface of the top beam 2, the support column 3, the diagonal bracing steel beam 7, and the supporting beam 8, and the erosion of the surface of the top beam 2, the support column 3, the diagonal bracing steel beam 7, and the supporting beam 8 by rainwater rust is effectively reduced, thereby improving the structural strength and service life of the device.

[0043] A method for installing a prestressed composite beam structure, comprising: S1: First, a support column 3 is fixed on the foundation, and a top beam 2 is fixed on the top of the support column 3 using bolts and other parts, and then the bridge concrete base 1 is constructed with the top beam 2 as a fulcrum; S2: Then, a locking assembly is used to fix and connect a triangular platform 4 on opposite sides of two adjacent support columns 3, and a prestressed concrete base 5 is set on the top of the triangular platform 4, and a plurality of prestressed tendons 6 for applying prestress are arranged inside the prestressed concrete base 5; S3: Then, the diagonal bracing steel beam 7 is symmetrically fixedly connected to the bottom of the top beam 2, so that the bottom of the diagonal bracing steel beam 7 forms a fixed conflict with the prestressed concrete base 5; S4: Then use the locking assembly to fix the support beam 8 between two adjacent support columns 3, and make the support beam 8 drive the load-bearing rod 10 to form a conflict with the prestressed concrete base 5. At the same time, when the load-bearing rod 10 is subjected to the resistance force of the prestressed concrete base 5, it cooperates with the transmission mechanism to drive the support plate 11 to form a conflict with the prestressed concrete base 5.

[0044] The implementation principle of the prestressed composite beam structure and installation method of the present embodiment is as follows: first, the triangular table 4 is pulled to move to a suitable position along the length direction of the support column 3, and the locking hole 25 is driven to align with the corresponding adjustment hole 24, and then one end of the locking screw 27 is pulled through the adjustment hole 24 and the locking hole 25, and the locking nut 28 is tightened so that the locking nut 28 is locked and fixed with the support column 3 along the length direction of the locking screw 27; Then, the second locking hole 26 is driven to align with the corresponding adjustment hole 24 along the length direction of the support column 3 by pulling the joist 8, and the force-bearing rod 10 is driven to form a conflict with the bottom of the prestressed concrete base 5, and then one end of the locking screw 27 is pulled through the adjustment hole 24 and the second locking hole 26, and the locking nut 28 is tightened so that the locking nut 28 is locked and fixed with the support column 3 along the length direction of the locking screw 27; Then, a tensioning device is used to apply prestress to a plurality of prestressed tendons 6 uniformly arranged inside the prestressed concrete base 5, and then a diagonal bracing steel beam 7 is used to disperse and transfer the load borne by the bridge concrete base 1 to the top of the prestressed concrete base 5, and at the same time, the tensioning of the prestressed tendons 6 generates a reaction force to the pressure on the top of the prestressed concrete base 5, thereby offsetting part of the load borne by the prestressed concrete base 5; When the top beam 2 transfers the load to the prestressed concrete base 5, the prestressed concrete base 5 pushes the force-bearing rod 10 to move downward along the length direction of the lifting slot 9, and at the same time, the force-bearing rod 10 drives the two transmission rods 15 to move away from each other around the hinge axis, and pushes the transmission slide plate 14 to drive the transmission rod 2 16 to move along the length direction of the guide slide bar 12, and at the same time, the transmission rod 2 16 drives the transmission rod 3 17 to push the support plate 11 upward along the length direction of the guide slide bar 20 around the hinge axis, and drives the support plate 11 to form a conflict with the bottom of the prestressed concrete base 5; At the same time, the support plate 11 drives the guide slide bar 20 to slide inside the guide perforation 19, thereby guiding the support plate 11 to move along the length direction of the guide slide bar 20. At the same time, when the support plate 11 is ejected around the hinge axis by the transmission rod 16, it will also push the guide slide bar 20 to drive the guide block 18 to drive the follower slide bar 22 to move along the length direction of the follower slide groove 21, thereby ensuring the smoothness and stability of the movement of the support plate 11.

Claims

1. A prestressed composite beam structure, comprising a bridge concrete base (1), characterized in that: The bottom of the bridge concrete base (1) is evenly and fixedly connected to a plurality of top beams (2), the bottom of the top beam (2) is symmetrically and fixedly connected to a support column (3), the opposite sides of two adjacent support columns (3) are both fixedly connected to a triangular platform (4), the top of the triangular platform (4) is provided with a prestressed concrete base (5), the interior of the prestressed concrete base (5) is evenly provided with a plurality of prestressed tendons (6), the bottom of the top beam (2) is symmetrically and fixedly connected to an inclined bracing steel beam (7), the bottom end of the inclined bracing steel beam (7) is fixedly connected to the prestressed concrete base (5), and a prestressed concrete base (5) is provided between two adjacent support columns (3). A support beam (8) is provided, wherein the support beam (8) is installed below a prestressed concrete base (5); a lifting slot (9) is provided at one end of the support beam (8); a force-bearing rod (10) is inserted into the interior of the lifting slot (9); the top of the force-bearing rod (10) is in contact with the prestressed concrete base (5); a support plate (11) is symmetrically installed at one end of the support beam (8); and a transmission mechanism for driving the support plate (11) to form a contact with the prestressed concrete base (5) is symmetrically installed at one end of the support beam (8); and a locking assembly for fixing the tripod (4) and the support beam (8) is installed at one end of the support column (3).

2. A prestressed composite beam structure according to claim 1, characterized in that: The transmission mechanism comprises a pair of guide slide bars (12) symmetrically fixedly connected to one end of the supporting beam (8), one end of two adjacent guide slide bars (12) being fixedly connected to a connecting plate (13), one end of the guide slide bars (12) being slidably connected to a transmission slide plate (14), one end of the force bearing rod (10) being symmetrically hinged to a transmission rod 1 (15), the other end of the transmission rod 1 (15) being hinged to the transmission slide plate (14), and the top of the transmission slide plate (14) being hinged to a transmission rod 2 (16). The middle section of the transmission rod 2 (16) is hinged with a transmission rod 3 (17), one end of the transmission rod 3 (17) is hinged with the connecting plate (13), the top of the transmission rod 2 (16) is hinged with the support plate (11), one end of the connecting plate (13) is installed with a guide component for guiding the support plate (11) to move along the length direction of the force-bearing rod (10), and one end of the connecting plate (13) is installed with a follower component for guiding the support plate (11) to move along the length direction of the guide slide rod (12).

3. A prestressed composite beam structure according to claim 2, characterized in that: The guide assembly comprises a guide block (18) arranged on one side of the connecting plate (13); a guide through hole (19) is formed at one end of the guide block (18); a guide slide rod (20) is slidably inserted into the interior of the guide through hole (19); and the top of the guide slide rod (20) is fixedly connected to the support plate (11).

4. A prestressed composite beam structure according to claim 2, characterized in that: The follower assembly comprises a follower slide groove (21) formed at one end of the connecting plate (13), and a follower slider (22) adapted to the follower slide groove (21) is symmetrically fixedly connected to one end of the guide block (18).

5. The prestressed composite beam structure according to claim 2, characterized in that: The outer periphery of the guide slide bar (12) is provided with a lifting spring (23), and the lifting spring (23) is installed between the connecting plate (13) and the transmission slide plate (14).

6. The prestressed composite beam structure according to claim 1, characterized in that: The locking assembly comprises a plurality of adjustment holes (24) uniformly formed at one end of the support column (3); a pair of first locking holes (25) adapted to the adjustment holes (24) are formed at one end of the tripod (4); a pair of second locking holes (26) adapted to the adjustment holes (24) are symmetrically formed at one end of the support beam (8); a locking screw (27) is inserted into the interior of the adjustment hole (24); one end of the locking screw (27) passes through the adjustment hole (24) and the first locking hole (25) or the second locking hole (26), and is threadedly connected to a locking nut (28).

7. The prestressed composite beam structure according to claim 1, characterized in that: The surfaces of the top beam (2), the support column (3), the diagonal steel beam (7), and the support beam (8) are all coated with organic silicon waterproof coating.

8. A method for installing a prestressed composite beam structure according to any one of claims 1 to 7, characterized in that: include: S1: First, a support column (3) is fixedly installed on the foundation, and a top beam (2) is fixed on the top of the support column (3) using bolts and other parts, and then the bridge concrete base (1) is constructed with the top beam (2) as a fulcrum; S2: Then, a triangular platform (4) is fixedly connected by using a locking assembly on the opposite sides of two adjacent support columns (3), and a prestressed concrete base (5) is erected on the top of the triangular platform (4), and a plurality of prestressed tendons (6) for applying prestress are arranged inside the prestressed concrete base (5); S3: Then, the diagonal bracing steel beam (7) is symmetrically fixedly connected to the bottom of the top beam (2), so that the bottom of the diagonal bracing steel beam (7) forms a fixed abutment with the prestressed concrete base (5); S4: Then, a locking assembly is used to fix a support beam (8) between two adjacent support columns (3), so that the support beam (8) drives the load-bearing rod (10) to form a conflict with the prestressed concrete base (5), and at the same time, when the load-bearing rod (10) is subjected to the conflicting force of the prestressed concrete base (5), it cooperates with the transmission mechanism to drive the support plate (11) to form a conflict with the prestressed concrete base (5).

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