An assembled steel bridge column

Abstract

The present invention discloses an assembled steel bridge column, wherein the upper connecting plate, U-shaped channel steel and lower connecting plate of the assembled steel bridge column are fixedly connected in sequence from top to bottom, and two U-shaped channel steels are arranged side by side between the upper connecting plate and the lower connecting plate; the upper connecting plate and the lower connecting plate are both provided with a connecting structure for connecting the assembled steel bridge; a corbel is fixedly installed at one end of the two U-shaped channel steels facing the lower connecting plate; a crossbeam connecting hole plate is fixedly connected between the two U-shaped channel steels, and the crossbeam connecting hole plate is located between the corbel and the lower connecting plate and is used to fix the crossbeam of the assembled steel bridge; the crossbeam locating pin is fixedly connected to the top surface of the lower connecting plate and is used to position the crossbeam; and a pad is clamped between the corbel and the crossbeam. The above-mentioned assembled steel bridge column can meet the needs of large-span emergency bridges and has the characteristics of simple bridge lowering steps and no need to dismantle and reinstall the tail section crossbeam and bridge deck.

Description

Technical Field

[0001] The present invention relates to the technical field of assembled steel bridges, and in particular to an assembled steel bridge column. Background Art

[0002] Prefabricated steel bridges can play an important role in disaster relief as emergency bridges. However, the design of existing prefabricated steel bridges does not take into account the construction of continuous span bridges. They have defects such as small design spans, cumbersome bridge lowering procedures, and the need to dismantle and reinstall the tail section crossbeams and bridge decks. As a result, the existing prefabricated steel bridges cannot meet the demand for large-span emergency bridges. Summary of the Invention

[0003] In view of this, the present invention provides an assembled steel bridge column that can meet the needs of large-span emergency bridge structures, and has the characteristics of simple bridge lowering steps and no need to dismantle and reinstall the tail section beam and bridge deck.

[0004] The present invention adopts the following specific technical solutions:

[0005] An assembled steel bridge column comprises an upper connecting plate, a U-shaped channel steel, a lower connecting plate, a corbel, a crossbeam connecting hole plate, a pad and a crossbeam locating pin;

[0006] The upper connecting plate, the U-shaped channel steel and the lower connecting plate are fixedly connected in sequence from top to bottom, and two U-shaped channel steels are arranged side by side between the upper connecting plate and the lower connecting plate;

[0007] The upper connecting plate and the lower connecting plate are both provided with a connecting structure for connecting to an assembled steel bridge;

[0008] The bracket is fixedly installed on one end of the two U-shaped channel steels facing the lower connecting plate;

[0009] The crossbeam connection hole plate is fixedly connected between the two U-shaped channel steels. The crossbeam connection hole plate is located between the corbel and the lower connection plate and is used to fix the crossbeam of the assembled steel bridge;

[0010] The crossbeam positioning pin is fixedly connected to the top surface of the lower connecting plate and is used to position the crossbeam;

[0011] The pad is used to be clamped between the corbel and the crossbeam.

[0012] Furthermore, the connection structure is a plurality of connection pin holes.

[0013] Furthermore, the upper connecting plate and the lower connecting plate are both provided with four connecting pin holes distributed in an array.

[0014] Furthermore, it also includes a plurality of support connection hole plates fixedly connected to the two U-shaped channel steels.

[0015] Furthermore, a plurality of the support frame connection hole plates are arranged at intervals along the vertical direction and are located between the upper connection plate and the corbel.

[0016] Furthermore, the U-shaped channel steel extends in a vertical direction, and the openings of the two U-shaped channel steels are arranged back to back.

[0017] Beneficial effects:

[0018] The above-mentioned prefabricated steel bridge column includes an upper connecting plate and a lower connecting plate with a connecting structure, two U-shaped channel steels arranged side by side between the upper connecting plate and the lower connecting plate, a beam connecting hole plate and a beam positioning pin for connecting the crossbeam, and a bracket installed on the U-shaped channel steel; when the prefabricated steel bridge column is used to connect the prefabricated steel bridge, the prefabricated steel bridge column and the upper and lower trusses of the prefabricated steel bridge are connected through the connecting structure to form a stable truss structure for the main truss, and the height of the main truss is doubled, so that the bridge can adapt to the requirements of a larger span; when erecting When spanning a bridge continuously, the prefabricated steel bridge columns assembled in the middle of the main truss can serve as pillars at the middle piers, thereby improving the bearing capacity at the bridge fulcrums; when the prefabricated steel bridge columns are connected to the beams, they do not interfere with the disassembly and assembly of the guide beams and tail beam trusses, and there is no need to remove and reinstall the beams and bridge decks at the ends of the bridge during erection; the prefabricated steel bridge columns are firmly connected to the ends of the beams, and the beams can be used to support the bridge when it is lowered, overcoming the problem of the small space under the main beam truss and the inability to place a jack when lowering the existing prefabricated steel bridges. The steps of lowering the bridge are simplified, and reliability and safety are improved.

[0019] Therefore, the use of the above-mentioned prefabricated steel bridge columns can meet the needs of large-span emergency bridge structures, the bridge lowering steps are simple, and the tail section crossbeam and bridge deck do not need to be dismantled and reinstalled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the assembled steel bridge column of the present invention;

[0021] Figure 2 A schematic diagram of the structure of an assembled steel bridge using the assembled steel bridge columns of the present invention;

[0022] Figure 3 A schematic diagram of the structure of an assembled steel bridge using the assembled steel bridge columns of the present invention;

[0023] Figure 4 for Figure 2 A schematic diagram of the partially enlarged structure of part A;

[0024] Figure 5 for Figure 3 A schematic diagram of the partially enlarged structure of part B;

[0025] Figure 6This is a schematic diagram of the connection structure at the bridge end support when the assembled steel bridge column of the present invention is used;

[0026] Figure 7 It is a schematic diagram of the structure of the bridge when the assembled steel bridge columns of the present invention are used.

[0027] Among them, 1-upper connecting plate, 2-U-shaped channel steel, 3-support connecting hole plate, 4-corbel, 5-pad, 6-beam connecting hole plate, 7-beam positioning pin, 8-lower connecting plate, 9-beam, 10-main beam truss, 11-tail beam truss, 12-erection roller, 13-bridge support, 14-bridge deck, 15-jack DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0029] This embodiment provides a prefabricated steel bridge column, such as Figure 1 As shown in the structure, the assembled steel bridge column includes an upper connecting plate 1, a U-shaped channel steel 2, a lower connecting plate 8, a corbel 4, a crossbeam connecting hole plate 6, a pad 5 and a crossbeam positioning pin 7; the upper connecting plate 1, the U-shaped channel steel 2 and the lower connecting plate 8 are fixedly connected in sequence from top to bottom, and two U-shaped channel steels 2 are arranged side by side between the upper connecting plate 1 and the lower connecting plate 8; the two U-shaped channel steels 2 are arranged back to back;

[0030] The upper connecting plate 1 and the lower connecting plate 8 are both provided with a connecting structure for connecting the assembled steel bridge; the connecting structure can be a plurality of connecting pin holes; the upper connecting plate 1 and the lower connecting plate 8 are both provided with four connecting pin holes distributed in an array; Figure 1 As shown in the structure, the upper connecting plate 1 and the lower connecting plate 8 include a portion provided with a connecting pin hole and a portion clamped between the two U-shaped channel steels 2. The upper connecting plate 1 and the U-shaped channel steel 2, as well as the lower connecting plate 8 and the U-shaped channel steel 2, can be connected by welding. During use, the upper connecting plate 1 and the lower connecting plate 8 can be fixedly connected to the main beam truss 10, the guide beam or the tail beam truss 11 through the connecting structure.

[0031] The U-shaped channel steel 2 extends in the vertical direction, and the openings of the two U-shaped channel steels 2 are arranged back to back; Figure 1 As shown in the structure, the cross section of the U-shaped channel steel 2 is U-shaped and is provided with a groove and an opening extending in the vertical direction; the U-shaped channel steel 2 structure has the characteristics of light weight and high strength; the openings of the two U-shaped channel steels 2 are arranged back to back, so that the projection of the two U-shaped channel steels 2 on the horizontal plane forms a "]["-shaped structure;

[0032] A bracket 4 is fixedly installed on one end of the two U-shaped channel steels 2 facing the lower connecting plate 8; the bracket 4 is used to install and fix the crossbeam 9 of the assembled steel bridge;

[0033] A beam connection hole plate 6 is fixedly connected between the two U-shaped channel steels 2. The beam connection hole plate 6 is located between the bracket 4 and the lower connection plate 8 and is used to fix the beam 9 of the assembled steel bridge; Figure 1 As shown in the structure, the crossbeam connecting hole plate 6 can be fixedly installed between the two U-shaped channel steels 2 by welding or other connection methods, and is provided with through holes for inserting fasteners, so that the crossbeam connecting hole plate 6 can be fixedly installed with crossbeams 9 by fasteners such as screws and bolts;

[0034] The crossbeam positioning pin 7 is fixedly connected to the top surface of the lower connecting plate 8 and is used to position the crossbeam 9; Figure 1 As shown in the structure, the fixing pin of the crossbeam 9 is arranged in the vertical direction and fixedly connected to the top surface of the lower connecting plate 8. When the crossbeam 9 is installed, the crossbeam positioning pin 7 is inserted into the corresponding positioning hole of the crossbeam 9 to achieve positioning and rapid alignment of the crossbeam 9;

[0035] The shim 5 is used to be clamped between the corbel 4 and the crossbeam 9; when the crossbeam 9 is installed, the shim 5 is inserted between the corbel 4 and the top surface of the crossbeam 9 of the assembled steel bridge to fix the crossbeam 9.

[0036] The above-mentioned assembled steel bridge column includes an upper connecting plate 1 and a lower connecting plate 8 with a connecting structure, two U-shaped channel steels 2 arranged side by side between the upper connecting plate 1 and the lower connecting plate 8, a beam connecting hole plate 6 and a beam positioning pin 7 for connecting the crossbeam 9, and a bracket 4 installed on the U-shaped channel steel 2; when the assembled steel bridge column is used to connect the assembled steel bridge, the assembled steel bridge column and the upper and lower trusses of the assembled steel bridge are connected through the connecting structure to form a stable truss structure of the main truss, and the height of the main truss is doubled, so that the bridge can adapt to the requirements of a larger span; when erecting When spanning a bridge continuously, the assembled steel bridge columns in the middle of the main truss can serve as pillars at the middle piers, thereby improving the bearing capacity at the bridge fulcrums; when the assembled steel bridge columns are connected to the crossbeam 9, they do not interfere with the disassembly and assembly of the guide beam and the tail beam truss 11, and there is no need to remove and reinstall the crossbeam 9 and the bridge deck 14 at the end of the bridge during erection; the assembled steel bridge columns are firmly connected to the ends of the crossbeam 9, and can support the crossbeam 9 to lower the bridge, thus overcoming the problem that the space under the main beam truss 10 of the existing assembled steel bridges is small and cannot accommodate a jack when the bridge is lowered, simplifying the bridge lowering steps and improving reliability and safety.

[0037] Therefore, the use of the above-mentioned assembled steel bridge columns can meet the needs of large-span emergency bridges, the bridge lowering steps are simple, and the tail section cross beam 9 and the bridge deck 14 do not need to be dismantled and reinstalled.

[0038] like Figure 1 As shown in the structure, the above-mentioned prefabricated steel bridge column also includes a plurality of support connection hole plates 3 fixedly connected to the two U-shaped channel steels 2. The plurality of support connection hole plates 3 are arranged at intervals along the vertical direction and are located between the upper connection plate 1 and the corbel 4.

[0039] By means of a plurality of support connection holes 3 provided on the two U-shaped channel steels 2, the two U-shaped channel steels 2 can be connected and fixed, thereby enhancing the structural strength and rigidity of the two U-shaped channel steels 2. At the same time, the support frame of the prefabricated steel bridge can also be fixedly connected through the support connection holes 3.

[0040] In the above-mentioned assembled steel bridge columns, the thickness of the upper connecting plate 1 and the lower connecting plate 8, as well as the spacing and diameter of the connecting pin holes are consistent with the joint size standards of the assembled steel bridge, and can be assembled with the main beam trusses 10 on the left and right sides respectively; the assembled steel bridge columns serve as the intermediate support structure of the continuous beam bridge, playing the role of supporting pillars at the intermediate piers, thereby improving the bearing capacity of the bridge; they can also be installed at both ends of the main beam, with one side spliced ​​with the main beam truss 10 and the other side spliced ​​with the guide beam or tail beam truss 11, and the lower surface of the splicing part is smooth and can be installed on the roller 12 The upper cantilever is pushed horizontally to erect the bridge; after the bridge is pushed to the predetermined position, the guide beam and the tail beam truss 11 are removed, and the cross beam 9 and the bridge deck 14 installed at the end of the bridge do not need to be disassembled and reinstalled. A pin hole of the lower connecting plate 8 of the assembled steel bridge column is connected to the bridge support 13, and the pad 5 is inserted into the bracket 4 and the top surface of the cross beam 9 of the assembled steel bridge to fix the cross beam 9. There is a large space under the cross beam 9, and the jack 15 can be placed under the cross beam 9 more conveniently to lift and lower the bridge, which overcomes the problem that the space under the main beam truss 10 is small and the jack cannot be placed when lowering the bridge.

[0041] like Figure 3 、 Figure 5 as well as Figure 6 As shown in the structure, the triangular trusses of the large-span prefabricated steel bridge are assembled top to top. After the prefabricated steel bridge columns are connected to the upper and lower main beam trusses 10, the main trusses can form a stable truss structure. The height of the main truss is doubled, and the bridge can adapt to the requirements of a larger span. The prefabricated steel bridge columns serve as the intermediate supporting structure of the continuous beam bridge, playing the role of pillars at the intermediate piers, thereby improving the bearing capacity of the bridge.

[0042] like Figure 2 and Figure 4 As shown in the structure, the prefabricated steel bridge columns are installed at both ends of the main beam, one side is spliced ​​with the main beam truss 10, and the other side is spliced ​​with the guide beam or tail beam truss 11. The lower surface of the splicing is smooth to meet the requirements of cantilever push bridge erection on the erection roller 12.

[0043] like Figure 6 and Figure 7As shown in the structure, after the bridge is pushed to the predetermined position, the guide beam and tail beam truss 11 are removed, and the cross beam 9 and bridge deck 14 installed at the end of the bridge do not need to be disassembled and reinstalled. A plurality of prefabricated steel bridge columns are arranged along the width direction of the bridge. There is a large space between the prefabricated steel bridge columns. The connecting pin holes of the lower connecting plates 8 of the prefabricated steel bridge columns are connected to the bridge supports 13. The pads 5 are inserted into the brackets 4 and the top surfaces of the cross beam 9 of the prefabricated steel bridge to fix the cross beam 9. There is a large space under the cross beam 9, and the jack 15 can be placed under the cross beam 9 more conveniently to lift and lower the bridge, overcoming the problem that the space under the main beam truss 10 is small and the jack cannot be placed when lowering the bridge. The steps of lowering the bridge are simplified, and the reliability and safety are improved.

[0044] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled steel bridge column, characterized in that: It includes upper connecting plate, U-shaped channel steel, lower connecting plate, corbel, crossbeam connecting hole plate, pad and crossbeam locating pin; The upper connecting plate, the U-shaped channel steel and the lower connecting plate are fixedly connected in sequence from top to bottom, and two U-shaped channel steels are arranged side by side between the upper connecting plate and the lower connecting plate; The upper connecting plate and the lower connecting plate are both provided with a connecting structure for connecting to an assembled steel bridge; The bracket is fixedly installed on one end of the two U-shaped channel steels facing the lower connecting plate; The crossbeam connection hole plate is fixedly connected between the two U-shaped channel steels. The crossbeam connection hole plate is located between the corbel and the lower connection plate and is used to fix the crossbeam of the assembled steel bridge; The crossbeam positioning pin is fixedly connected to the top surface of the lower connecting plate and is used to position the crossbeam; The pad is used to be clamped between the corbel and the crossbeam; The upper connecting plate and the lower connecting plate are fixedly connected to the main beam truss, the guide beam or the tail beam truss through the connecting structure.

2. The assembled steel bridge column according to claim 1, characterized in that: The connecting structure is a plurality of connecting pin holes.

3. The assembled steel bridge column according to claim 2, characterized in that: The upper connecting plate and the lower connecting plate are both provided with four connecting pin holes distributed in an array.

4. The assembled steel bridge column according to claim 3, characterized in that: It also includes a plurality of support connection hole plates fixedly connected to the two U-shaped channel steels.

5. The assembled steel bridge column according to claim 4, characterized in that: A plurality of support frame connection hole plates are arranged at intervals along the vertical direction and are located between the upper connection plate and the corbel.

6. The assembled steel bridge column according to claim 5, characterized in that: The U-shaped channel steels extend in a vertical direction, and the openings of the two U-shaped channel steels are arranged back to back.

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