Cross beam hanging bracket in concrete filled steel tube tied arch bridge

Abstract

The utility model provides a middle cross beam hanging bracket of a concrete filled steel tube tied arch bridge, which comprises two hanging brackets for respectively hanging two ends of a middle cross beam of a constructed large-span steel tube arch bridge, and the constructed large-span steel tube arch bridge is a tied arch bridge and comprises an arch rib and a tie bar connected between two arch feet of the arch rib. The middle cross beam is a cross beam connected between the two tie bars, and the two hoisting supports are located on the front side and the rear side of the middle cross beam respectively and installed on the two tie bars respectively. Compared with the prior art, the rectangular hanging bracket has the advantages that the overall structure of the rectangular hanging bracket is connected into a whole through the fastening assemblies, specifically, the lower cross beam, the upper cross beam and the fastening assemblies are detachably installed, follow-up disassembly is convenient and fast, the number of the overall connecting rods is multiple, the connecting stability is better, and meanwhile the installation mode of the fastening assemblies is utilized; a traditional screw and bolt installation mode is avoided, and the purpose of convenient subsequent disassembly is achieved.

Description

Technical Field

[0001] The utility model relates to a middle beam hanger of a steel tube concrete tied arch bridge, belonging to the field of hangers. Background Art

[0002] The superstructure of the new Gongnong Bridge's main bridge features a through-type steel tubular concrete-filled tied-arch structure, employing rigid tie rods, rigid arches, and rigid hangers. Its calculated span is 100m, the arch axis is a quadratic parabola, the rise-to-span ratio is 1:5, and the rise is 20m. The arch ribs of the new Gongnong Bridge's main bridge utilize a dumbbell-shaped steel tubular concrete structure, with two ribs. Tie rods connect the two arch feet. These prestressed concrete tie rods have a box-section, are 220cm high, 130cm wide, and 30cm thick, and are reinforced with a rigid skeleton. The tie rods beneath the two arch ribs are connected by multiple reinforced concrete center beams. After careful comparison of safety and technical aspects, the main bridge of the new Gongnong Bridge adopted a scaffold-free construction scheme using a monolithic arch rib and tie rod rigid frame hoisted as a whole. The central crossbeam also uses prefabricated reinforced concrete beams. This means that the steel tubular structure of the bridge superstructure (including the monolithic arch rib and tie rod rigid frame) was first assembled on the shore side before being hoisted and transferred to the site. This ensures the overall quality of the steel structure, minimizes impact on waterway navigation, and ensures a safe and reliable construction process. After the monolithic arch rib and tie rod rigid frame were hoisted as a whole, the central crossbeam was hoisted into place using hoisting equipment, followed by the pouring of concrete for the arch ribs and tie rods.

[0003] However, there are few technical data available for reference when constructing large-span steel tube arch bridges nowadays. Therefore, the patent number CN201420741022.9 is a middle cross beam hanger for the construction of large-span steel tube arch bridges. This patent records that the middle cross beam hoisted into place is supported by a lifting bracket installed on the tie rod, and at the same time, longitudinal support beams supporting the front and rear ends of the middle cross beam are arranged on the lifting bracket. This not only facilitates support and has good support effect, but also can easily and quickly lift the middle cross beam stably between the two tie rods, and is easy to assemble and disassemble. In this patent, the lifting bracket recorded uses tie rods and bolts to be installed with the upper and lower cross beams to assemble them into an integral lifting bracket. This installation method is combined with a single number of tie rods to assemble the lifting bracket, which has the problem of poor installation stability, and the bolts are inconvenient to install, and the subsequent disassembly is also relatively inconvenient. Therefore, this application proposes a lifting bracket that is easy to assemble for use in conjunction with the middle cross beam hanger of steel tube concrete tie arch bridges. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a crossbeam hanger for a steel tube concrete tied arch bridge.

[0005] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0006] A steel tube concrete tied arch bridge middle cross beam hanger, comprising two hoisting brackets for hoisting the two ends of the middle cross beam of the constructed long-span steel tube arch bridge, the constructed long-span steel tube arch bridge is a tied arch bridge and comprises an arch rib and a tie rod connected between two arch feet of the arch rib, the middle cross beam is a cross beam connected between the two tie rods, the two hoisting brackets are respectively located at the front and rear sides of the middle cross beam and are respectively installed on the two tie rods, the hoisting brackets each comprise two rectangular hangers of the same structure and a longitudinal support for supporting the middle cross beam Support beam, the two rectangular hangers are respectively located on the left and right sides of the middle beam, the rectangular hanger includes a lower beam and an upper beam arranged at the bottom of the tie rod, the upper beam is supported by the tie rod, the lower beam and the upper beam are fastened together by a connecting rod, the bottom ends of the lower beam and the upper beam are fixed with a fastening assembly, the fastening assembly is provided with two mutually adjustable adjustment plates, the adjustment plate is located on one side of the connecting rod and is fixed with a fixing rod, and the connecting rod is provided with a through hole corresponding to the fixing rod.

[0007] Furthermore, the middle cross beam is a prefabricated reinforced concrete beam, and the number of the arch ribs is two, and they are arranged parallel to each other.

[0008] Furthermore, the lower crossbeam and the upper crossbeam are both I-shaped steel plates, and the fastening assembly includes a welding plate and an auxiliary welding plate respectively fixed on both sides of the bottom ends of the lower crossbeam and the upper crossbeam, a double-axis screw is connected between the welding plate and the auxiliary welding plate, and the adjustment plate is threadedly sleeved on both ends of the double-axis screw.

[0009] Furthermore, a transverse reinforcing round rod is fixedly provided between the welding plate and the auxiliary welding plate, and the adjusting plates are slidably mounted on the reinforcing round rod.

[0010] Furthermore, a bearing is fixed on the auxiliary welding plate, one end of the double-axis screw is sleeved in the bearing, and the other end of the double-axis screw is fixed with a rotating plate, the rotating plate is fitted with the outer side surface of the welding plate, and a plum blossom hole is arranged on the rotating plate.

[0011] Furthermore, the lower crossbeam and the upper crossbeam are both provided with round holes for the connecting rods to pass through. There are multiple connecting rods, and the connecting rods are divided into two rows on the left and right sides and are passed through the two ends of the lower crossbeam and the upper crossbeam.

[0012] Furthermore, a positioning component is provided on the upper crossbeam, and the positioning component is a positioning groove opened on the top surface of the upper crossbeam, and a positioning block corresponding to the positioning groove is fixedly provided on the outer side surface of the top end of the connecting rod.

[0013] Furthermore, the bottom ends of the lower beam and the upper beam are fixed with support assemblies for supporting the fixing rods, and the support assemblies include support plates fixed to the bottom ends of the lower beam and the upper beam, and support cylinders are fixed on the support plates.

[0014] Beneficial effects of the utility model:

[0015] The hoisted center beam is supported by a hoisting bracket installed on the tie rod. At the same time, longitudinal support beams are arranged on the hoisting bracket to support the front and rear ends of the center beam. This not only provides convenient support and good supporting effect, but also allows the center beam to be hoisted between the two tie rods easily, quickly and stably, and is easy to assemble and disassemble.

[0016] The overall structure of the rectangular hanger of the present application is connected into an integral whole by fastening components. Specifically, the lower beam, upper beam and fastening components are detachably installed, and subsequent disassembly is convenient. The overall number of connecting rods is multiple, and the connection stability is better. At the same time, the installation method of the fastening components is used to avoid the traditional installation method using screws and bolts, thereby achieving the purpose of convenient subsequent disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a front view of a crossbeam hanger in a steel tube concrete tied arch bridge of the utility model;

[0019] Figure 2 This is a schematic diagram of the fastening assembly of the crossbeam hanger in a steel tube concrete tied arch bridge of the present invention;

[0020] Figure 3 This is an enlarged view of point A of the crossbeam hanger in a steel tube concrete tied arch bridge of the utility model;

[0021] Figure 4 This is an enlarged view of point B of the crossbeam hanger in a steel tube concrete tied arch bridge of the utility model.

[0022] In the figure: 1. Middle crossbeam; 2. Arch rib; 3. Tie rod; 4. Longitudinal support beam; 5. Lower crossbeam; 6. Upper crossbeam; 7. Connecting rod; 8. Adjusting plate; 9. Fixing rod; 10. Through hole; 11. Welding plate; 12. Auxiliary welding plate; 13. Double-axis screw; 14. Round hole; 15. Positioning groove; 16. Reinforced round rod; 17. Positioning block; 18. Support plate; 19. Support cylinder; 20. Bearing; 21. Rotating plate; 22. Plum blossom hole. 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The utility model provides a technical solution: a steel tube concrete tied arch bridge middle cross beam hanger, comprising two lifting brackets for lifting the two ends of the middle cross beam 1 of the constructed long-span steel tube arch bridge respectively. The constructed long-span steel tube arch bridge is a tied arch bridge and comprises an arch rib 2 and a tie rod 3 connected between two arch feet of the arch rib 2. The middle cross beam 1 is a cross beam connected between the two tie rods 3. The two lifting brackets are respectively located at the front and rear sides of the middle cross beam 1 and are respectively installed on the two tie rods 3. The lifting brackets each include two rectangular hangers of the same structure and a longitudinal support for supporting the middle cross beam 1. Toward the support beam 4, the two rectangular hangers are respectively located on the left and right sides of the middle beam 1, and the rectangular hangers include a lower beam 5 and an upper beam 6 arranged at the bottom of the tie rod 3, and the upper beam 6 is supported on the tie rod 3. The lower beam 5 and the upper beam 6 are fastened together by a connecting rod 7 that passes through. The bottom ends of the lower beam 5 and the upper beam 6 are fixed with fastening components, and the fastening components are provided with two mutually adjustable adjustment plates 8. The adjustment plate 8 is located on one side of the connecting rod 7 and is fixed with a fixing rod 9, and the connecting rod 7 is provided with a through hole 10 corresponding to the fixing rod 9.

[0025] See Figure 1-4The middle cross beam 1 is a reinforced concrete precast beam, the number of the arch ribs 2 is two, and they are arranged parallel to each other, the lower cross beam 5 and the upper cross beam 6 are both I-shaped steel plates, the fastening assembly includes a welding plate 11 and an auxiliary welding plate 12 fixed on both sides of the bottom ends of the lower cross beam 5 and the upper cross beam 6, a double-axis screw 13 is connected between the welding plate 11 and the auxiliary welding plate 12, the adjusting plate 8 is threadedly sleeved on both ends of the double-axis screw 13, a transverse reinforcing round rod 16 is also fixed between the welding plate 11 and the auxiliary welding plate 12, the adjusting plate 8 is slidably sleeved on the reinforcing round rod 16, a bearing 20 is fixed on the auxiliary welding plate 12, one end of the double-axis screw 13 is sleeved in the bearing 20, and a rotating plate 21 is fixed on the other end of the double-axis screw 13, the rotating plate 21 is fitted with the outer side surface of the welding plate 11, the rotating There are plum blossom holes 22 on the plate 21. The plum blossom holes 22 arranged on the rotating plate 21 can be inserted into the plum blossom holes 22 by using a drill bit from a separate drill rig, so that the double-axis screw 13 connected to the rotating plate 21 can be driven by the drill rig to rotate. During the rotation, the two adjusting plates 8 on it are driven to move away from each other. Finally, the fixing rod 9 on the adjusting plate 8 passes through the through holes 10 on the corresponding connecting rods 7, so that the connection between the lower crossbeam 5, the upper crossbeam 6 and the connecting rod 7 can be realized. The number of fixing rods 9 on the adjusting plate 8 is consistent with the number of connecting rods 7, and the fixing rods 9 correspond to the through holes 10 on each connecting rod 7. The number of connecting rods 7 can be designed to be multiple and divided into two rows. The reinforcing round rod 16 is actually a traction rod. On the one hand, it ensures that the adjusting plate 8 is slidably sleeved on the reinforcing round rod 16, so that the adjusting plate 8 can move horizontally close to or away from each other. On the other hand, it ensures that it is connected as a whole with the welding plate 11 and the auxiliary welding plate 12, with good stability.

[0026] See Figure 2-3 , the lower cross beam 5 and the upper cross beam 6 are both provided with a circular hole 14 for the connecting rod 7 to pass through. The number of the connecting rods 7 is multiple, and the connecting rods 7 are divided into two rows on the left and right and are arranged on both ends of the lower cross beam 5 and the upper cross beam 6. A positioning component is provided on the upper cross beam 6, and the positioning component is a positioning groove 15 provided on the top surface of the upper cross beam 6. A positioning block 17 corresponding to the positioning groove 15 is fixed on the outer side surface of the top end of the connecting rod 7. When assembling the rectangular hanger, the connecting rod 7 must first be passed through the circular hole 14, and the positioning block 17 of the connecting rod 7 is aligned and inserted into the positioning groove 15, so that the fixing rod 9 can be aligned with the through hole 10 on each connecting rod 7.

[0027] See Figure 2 and Figure 4The bottom ends of the lower crossbeam 5 and the upper crossbeam 6 are fixed with support assemblies supporting the fixing rods 9, and the support assemblies include support plates 18 fixed to the bottom ends of the lower crossbeam 5 and the upper crossbeam 6, and support cylinders 19 are fixed on the support plates 18. The number of fixing rods 9 on the adjustment plate 8 is consistent with the number of connecting rods 7, and the fixing rods 9 pass through the through holes 10 on each connecting rod 7. Finally, the through ends of the fixing rods 9 will also be inserted into the support cylinders 19 to ensure that the connection area is increased and the stability is improved. At this time, the adjustment plate 8 is in contact with the surface of the connecting rod 7.

[0028] During specific work, the middle crossbeam hoisted into place is supported by the hoisting bracket installed on the tie rod 3, and at the same time, a longitudinal support beam 4 is arranged on the hoisting bracket to support the front and rear ends of the middle crossbeam. It is not only convenient to support and has a good supporting effect, but also can easily, quickly and stably hoist the middle crossbeam between the two tie rods, and is easy to assemble and disassemble. The overall structure of the rectangular hanger of this application is connected as an integral whole by a fastening assembly. Specifically, the lower crossbeam 5, the upper crossbeam 6 and the fastening assembly are detachably installed, and subsequent disassembly is convenient. There are multiple connecting rods 7 as a whole, and the connection stability is better. At the same time, the installation method of the fastening assembly is used to avoid the traditional installation method using screws and bolts, so as to achieve the purpose of convenient subsequent disassembly. The connecting rod is made of steel.

[0029] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A crossbeam hanger for a steel tube concrete tied arch bridge, characterized by: The invention comprises two hoisting brackets for hoisting the two ends of the middle cross beam (1) of the constructed long-span steel tube arch bridge respectively. The constructed long-span steel tube arch bridge is a tie-bar arch bridge and comprises an arch rib (2) and a tie rod (3) between two arch feet connected to the arch rib (2). The middle cross beam (1) is a cross beam connected between the two tie rods (3). The two hoisting brackets are respectively located at the front and rear sides of the middle cross beam (1) and are respectively installed on the two tie rods (3). The hoisting brackets each comprise two rectangular hangers with the same structure and a longitudinal support beam (4) for supporting the middle cross beam (1). The two rectangular hangers are respectively located at the middle cross beam ( 1), the rectangular hanger comprises a lower crossbeam (5) and an upper crossbeam (6) arranged at the bottom of the tie rod (3), the upper crossbeam (6) is supported by the tie rod (3), the lower crossbeam (5) and the upper crossbeam (6) are fastened together by a connecting rod (7) provided therethrough, the bottom ends of the lower crossbeam (5) and the upper crossbeam (6) are fixed with a fastening assembly, the fastening assembly is provided with two mutually adjustable adjustment plates (8), the adjustment plate (8) is fixed with a fixing rod (9) on one side of the connecting rod (7), and the connecting rod (7) is provided with a through hole (10) corresponding to the fixing rod (9).

2. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 1, characterized in that: The middle cross beam (1) is a prefabricated reinforced concrete beam, and the arch ribs (2) are two in number and are arranged parallel to each other.

3. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 2, characterized in that: The lower crossbeam (5) and the upper crossbeam (6) are both I-shaped steel plates, and the fastening assembly includes a welding plate (11) and an auxiliary welding plate (12) respectively fixed on both sides of the bottom ends of the lower crossbeam (5) and the upper crossbeam (6), a double-axis screw rod (13) is connected between the welding plate (11) and the auxiliary welding plate (12), and the adjustment plate (8) is threadedly sleeved on both ends of the double-axis screw rod (13).

4. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 3, characterized in that: A transverse reinforcing round rod (16) is fixedly provided between the welding plate (11) and the auxiliary welding plate (12), and the adjusting plates (8) are all slidably sleeved on the reinforcing round rod (16).

5. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 4, characterized in that: A bearing (20) is fixedly provided on the auxiliary welding plate (12), one end of the double-axis screw rod (13) is sleeved in the bearing (20), and a rotating plate (21) is fixedly provided on the other end of the double-axis screw rod (13), the rotating plate (21) is arranged in contact with the outer side surface of the welding plate (11), and a plum blossom hole (22) is arranged on the rotating plate (21).

6. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 5, characterized in that: The lower crossbeam (5) and the upper crossbeam (6) are both provided with circular holes (14) for the connecting rods (7) to pass through. There are a plurality of connecting rods (7), and the connecting rods (7) are divided into two rows, one on the left and one on the right, and are arranged on both ends of the lower crossbeam (5) and the upper crossbeam (6).

7. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 6, characterized in that: A positioning assembly is provided on the upper crossbeam (6), and the positioning assembly is a positioning groove (15) provided on the top surface of the upper crossbeam (6). A positioning block (17) corresponding to the positioning groove (15) is fixed on the outer side surface of the top end of the connecting rod (7).

8. The crossbeam hanger of a steel tube concrete tied arch bridge according to claim 7, characterized in that: The bottom ends of the lower crossbeam (5) and the upper crossbeam (6) are both fixedly provided with a support assembly for supporting the fixed rod (9), and the support assembly comprises a support plate (18) fixed to the bottom ends of the lower crossbeam (5) and the upper crossbeam (6), and a support cylinder (19) is fixedly provided on the support plate (18).

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