An assembled truss bridge

Abstract

The present invention discloses an assembled truss bridge, belonging to the technical field of prefabricated highway steel bridges. The present invention uses triangular assembly units as modular truss pieces. Compared with traditional prefabricated highway steel bridges, the weight of a single truss piece is reduced, making it easier to carry. A truss bridge can be constructed by combining crossbeams, triangular assembly units, and various connecting blocks with single pins, simplifying the construction process and shortening the erection operation time. The modular truss pieces, crossbeams, and various assembly connectors can be used to construct a variety of truss bridge structures with multiple layers and rows, meeting the various requirements for building prefabricated highway steel bridges.

Description

Technical Field

[0001] The invention relates to an assembled truss bridge, belonging to the technical field of assembled highway steel bridges. Background Art

[0002] Existing civilian emergency bridges for disaster relief are mainly prefabricated highway steel bridges, which are composed of truss pieces, bridge deck systems, connection systems and bridge foundations. The truss pieces weigh about 270 kg, and 4 to 8 people are needed to move a single piece. There are problems such as heavy unit weight, large number of moving personnel, and laborious manual assembly. These put forward high requirements for the personnel who erect prefabricated highway steel bridges, which is not conducive to promotion and popularization, and the erection operation time is also relatively long. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an assembled truss bridge to solve the problems in the prior art of heavy truss unit weight, large number of transporting personnel required, and laborious manual assembly.

[0004] To solve the above technical problems, the present invention is implemented by adopting the following solutions:

[0005] The present invention provides an assembled truss bridge, comprising a plurality of triangular assembled units, cross beams and assembled connectors;

[0006] The triangular assembly unit is formed by connecting a pair of 45° right-angled triangular plates;

[0007] The assembly connectors include one or more of side right-angle connectors, inner right-angle connectors, 45° angle connectors, center connectors, and web members;

[0008] A plurality of cross beams are detachably fixedly connected between two groups of truss units formed by detachably assembling a plurality of triangular assembling units through a plurality of assembling connectors.

[0009] Preferably, the 45° angles and right angles of the pair of 45° right-angled triangular plates are spaced apart from each other by gaps and are both provided with first pin holes; the web comprises a rod body and first pin holes provided at both ends of the rod body; the side right-angle connecting blocks, the inner right-angle connecting blocks, the 45° angle connecting blocks and the center connecting blocks are all provided with second pin holes; the second pin holes match the first pin holes and are detachably fixedly connected by a number of single pins.

[0010] Preferably, a plurality of external connection holes are provided on the outer right-angled sides of the triangular assembly unit, which are used for fastening connections between the upper and lower layers in the multi-layer truss unit.

[0011] Preferably, the assembly connection also includes a longitudinal support frame and a transverse support frame, both of which are rectangular, and the center is hollowed out to provide a cross support rod; both ends of the longitudinal support frame and the transverse support frame are provided with support connection holes, and the support connection holes are detachably fixedly connected to the external connection holes provided on the outer right-angled side of the triangular assembly unit and the internal connection holes provided on the inner right-angled side through bolt assemblies.

[0012] Preferably, the assembly connector also includes a connecting plate, with connecting plate connecting holes provided at both ends of the connecting plate, and the connecting plate connecting holes are detachably fixedly connected to the internal connecting holes provided on the right-angled sides of the triangular assembly unit through bolt assemblies.

[0013] Preferably, the crossbeam is detachably fixedly connected to the two assembled truss units through diagonal braces, and the diagonal braces include a brace rod and diagonal brace connecting holes arranged at both ends of the brace rod. The diagonal brace connecting holes are detachably fixedly connected to the inner connecting holes provided on the right-angled sides of the triangular assembly unit and the ear holes provided on the crossbeam through bolt assemblies.

[0014] The present invention also provides an assembled highway steel bridge, comprising the above-mentioned assembled truss bridge, a bridge deck system, a connection system and a bridge foundation, wherein the bridge deck system is installed on the assembled truss bridge, and the assembled truss bridge is fixedly connected to the bridge foundation through the connection system.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention adopts triangular assembly units as modular truss pieces. Compared with traditional prefabricated highway steel bridges, the weight of a single truss piece is reduced, making it easier to carry. A truss bridge can be built by combining crossbeams, triangular assembly units, and a variety of connecting blocks with single pins. The construction process is simple and the erection operation time is shortened.

[0017] 2. The present invention can construct a variety of truss bridge structures with multiple layers and rows through modular truss pieces, beams and various assembly connectors, meeting various requirements for building prefabricated highway steel bridges.

[0018] 3. The present invention can be used in conjunction with the deck system, connection system, etc. of the existing prefabricated highway steel bridge. It can not only completely replace the truss structure of the prefabricated highway steel bridge, but also partially replace the truss pieces of the prefabricated highway steel bridge, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a triangular assembly unit in an assembled truss bridge provided by an embodiment of the present invention;

[0020] Figure 2 This is a schematic structural diagram of a 45° right-angled triangle plate in an assembled truss bridge provided by an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a right-angle connection block in a assembled truss bridge provided by an embodiment of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a right-angle connection block in an assembled truss bridge provided by an embodiment of the present invention;

[0023] Figure 5 This is a schematic structural diagram of a 45° angle connecting block in an assembled truss bridge provided by an embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of a central connecting block in an assembled truss bridge provided by an embodiment of the present invention;

[0025] Figure 7 This is a schematic structural diagram of a web member of an assembled truss bridge provided by an embodiment of the present invention;

[0026] Figure 8 This is a schematic structural diagram of a longitudinal support frame in an assembled truss bridge provided by an embodiment of the present invention;

[0027] Figure 9 This is a schematic structural diagram of a transverse support frame in an assembled truss bridge provided by an embodiment of the present invention;

[0028] Figure 10 This is a schematic structural diagram of a center link plate of an assembled truss bridge provided by an embodiment of the present invention;

[0029] Figure 11 This is a schematic structural diagram of a crossbeam in an assembled truss bridge provided by an embodiment of the present invention;

[0030] Figure 12 This is a schematic structural diagram of a diagonal brace in an assembled truss bridge provided by an embodiment of the present invention;

[0031] Figure 13 This is a structural diagram of a single pin in an assembled truss bridge provided by an embodiment of the present invention;

[0032] Figure 14 This is a schematic structural diagram of a truss unit in a first embodiment of an assembled truss bridge provided by an embodiment of the present invention;

[0033] Figure 15 This is a schematic structural diagram of a truss unit of a second scheme of an assembled truss bridge provided by an embodiment of the present invention;

[0034] Figure 16 This is a schematic diagram of the connection structure of the longitudinal support frame and the transverse support frame in an assembled truss bridge provided by an embodiment of the present invention;

[0035] Figure 17 This is a schematic diagram of the connection structure of the center link plates of an assembled truss bridge provided by an embodiment of the present invention;

[0036] Figure 18 This is a schematic diagram of the connection structure of the diagonal braces and cross beams in an assembled truss bridge provided by an embodiment of the present invention;

[0037] Figure 19 This is a structural schematic diagram of a single-layer, single-row truss bridge in Solution 1 of an assembled truss bridge provided by an embodiment of the present invention;

[0038] Figure 20 This is a structural schematic diagram of a single-layer double-row truss bridge in Solution 1 of an assembled truss bridge provided by an embodiment of the present invention;

[0039] Figure 21 This is a structural schematic diagram of a double-deck, double-row truss bridge in Solution 1 of an assembled truss bridge provided by an embodiment of the present invention;

[0040] Figure 22 This is a structural schematic diagram of a double-deck, three-row truss bridge in Solution 1 of an assembled truss bridge provided by an embodiment of the present invention;

[0041] Figure 23 This is a structural schematic diagram of a single-layer, single-row truss bridge in Scheme 2 of an assembled truss bridge provided in an embodiment of the present invention;

[0042] Figure 24 This is a structural schematic diagram of a single-layer double-row truss bridge in Scheme 2 of an assembled truss bridge provided in an embodiment of the present invention;

[0043] Figure 25 This is a structural schematic diagram of a double-deck, double-row truss bridge in Scheme 2 of an assembled truss bridge provided in an embodiment of the present invention;

[0044] Figure 26 This is a structural schematic diagram of a double-deck, three-row truss bridge in Scheme 2 of an assembled truss bridge provided in an embodiment of the present invention;

[0045] In the figure: 1. triangular assembly unit; 2. side right-angle connection block; 3. inner right-angle connection block; 4. 45° angle connection block; 5. center connection block; 6. web; 7. longitudinal support frame; 8. transverse support frame; 9. connecting plate; 10. crossbeam; 11. single pin; 12. outer connection hole; 13. inner connection hole; 14. ear hole; 15. first pin hole; 16. second pin hole; 17. support connection hole; 18. support rod; 19. connecting plate connection hole; 20. diagonal brace; 21. diagonal brace connection hole. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0048] Example 1:

[0049] This embodiment provides an assembled truss bridge, comprising a plurality of triangular assembly units 1, a crossbeam 10, and assembly connectors. The triangular assembly units 1 are detachably assembled into two sets of truss units via the assembly connectors, and the crossbeam 10 is detachably and fixedly connected laterally between the two sets of truss units to form a truss bridge.

[0050] like Figure 1 、 2 As shown in Figures 3, 4, 5, 6, 13 and 14, the triangular assembly unit 1 is formed by connecting a pair of 45° right-angled triangular plates, and the assembly connecting parts include one or more of the side right-angled connecting blocks 2, the inner right-angled connecting blocks 3, the 45° angle connecting blocks 4 and the center connecting blocks 5; the 45° angles and the right angles of the pair of 45° right-angled triangular plates are spaced apart from each other with gaps and are all provided with first pin holes 15; the side right-angled connecting blocks 2, the inner right-angled connecting blocks 3, the 45° angle connecting blocks 4 and the center connecting blocks 5 are all provided with second pin holes 16, and the second pin holes 16 match the first pin holes 15. When assembling multiple triangular assembly units 1 into a truss unit of scheme one, the assembly connecting parts (side right-angle connection blocks 2, inner right-angle connection blocks 3, 45° angle connection blocks 4 and center connection blocks 5) are correspondingly inserted into the gaps at 45° angles and / or right angles when assembling multiple triangular assembly units 1, and then the first pin holes 15 and the second pin holes 16 are locked by several single pins 11 to realize the assembly of the truss unit of scheme one. Specifically, the side right-angle connection blocks 2 and the 45° angle connection blocks 4 are used for the assembly of single-layer truss units, and the inner right-angle connection blocks 3 and the center connection blocks 5 are used for the assembly of multi-layer truss units.

[0051] like Figure 1 As shown, a plurality of external connection holes 12 are provided on the outer right-angled sides of the triangular assembly unit 1. The external connection holes 12 are threaded holes, which can assist in the fastening connection between the upper and lower layers of the multi-layer truss unit with the bolt assembly, thereby enhancing the structural strength of the multi-layer truss bridge after assembly.

[0052] like Figure 1 、 2 As shown in Figures 8, 9 and 16, the assembly connection parts also include a longitudinal support frame 7 and a transverse support frame 8. The longitudinal support frame 7 and the transverse support frame 8 are both rectangular, and the center is hollowed out to provide a cross support rod 18; both ends of the longitudinal support frame 7 and the transverse support frame 8 are provided with support connection holes 17, and the support connection holes 17 are detachably fixedly connected to the outer connection holes 12 provided on the outer right-angled side of the triangular assembly unit 1 and the inner connection holes 13 (the inner connection holes 13 are threaded holes) provided on the inner right-angled side through bolt assemblies, and are used for connecting two rows of truss units to realize the assembly of double-row truss bridges, and ensure the spatial stability of the span of the assembled multi-row truss bridge, withstand additional horizontal load adjustments and balance the uneven overload effects between the main beams.

[0053] like Figure 10 and 17 As shown, the assembly connection also includes a connecting plate 9, and connecting plate connecting holes 19 are provided at both ends of the connecting plate 9. The connecting plate connecting holes 19 are detachably fixedly connected to the internal connecting holes 13 provided on the right-angled side of the triangular assembly unit 1 through a bolt assembly, and are used to connect the third row of truss units on the basis of the double row of truss units to realize the assembly of three rows of truss bridges.

[0054] like Figure 2 、 11 , 12 and 18, the diagonal brace 10 includes a brace and diagonal brace connecting holes 21 arranged at both ends of the brace. The diagonal brace connecting holes 21 can be detachably fixedly connected to the inner connecting holes 13 provided on the right-angled side of the triangular assembly unit 1 and the ear holes 14 provided on the crossbeam 10 (the crossbeam 10 is a standard crossbeam 10 of an assembled highway steel bridge, and its upper end has ear holes 14) through bolt assemblies. The crossbeam 10 is detachably fixedly connected to the two assembled truss units through the connection structure of the above-mentioned diagonal brace 20 to form a truss bridge.

[0055] like Figure 19 、 20 As shown in Figures 21 and 22, by assembling the above-mentioned several triangular assembly units 1, beams 10 and assembly connectors, the multi-layer and multi-row truss bridge of Solution 1 can be realized.

[0056] Example 2:

[0057] This embodiment provides an assembled truss bridge, comprising a plurality of triangular assembly units 1, a crossbeam 10, and assembly connectors. The triangular assembly units 1 are detachably assembled into two sets of truss units via the assembly connectors, and the crossbeam 10 is detachably and fixedly connected laterally between the two sets of truss units to form a truss bridge.

[0058] like Figure 1 、 2As shown in , 3, 4, 5, 6, 7, 13 and 15, the triangular assembly unit 1 is formed by connecting a pair of 45° right-angled triangle plates, and the assembly connecting parts include one or more of the side right-angled connection blocks 2, the inner right-angled connection blocks 3, the 45° angle connection blocks 4, the center connection blocks 5 and the web 6; the 45° angles and the right angles of the pair of 45° right-angled triangle plates are spaced apart from each other and are both provided with first pin holes 15; the web 6 includes a rod body and first pin holes 15 provided at both ends of the rod body; the side right-angled connection blocks 2, the inner right-angled connection blocks 3, the 45° angle connection blocks 4 and the center connection blocks 5 are all provided with second pin holes 16, and the second pin holes 16 match the first pin holes 15. When assembling multiple triangular assembly units 1 into a truss unit of scheme two, the assembly connectors (side right-angle connection blocks 2, inner right-angle connection blocks 3, 45° angle connection blocks 4 and center connection blocks 5) are correspondingly inserted into the gaps formed by the 45° angles and / or right angles and the web members 6 when assembling multiple triangular assembly units 1, and then the first pin holes 15 and the second pin holes 16 are locked by several single pins 11 to realize the assembly of the truss unit of scheme two. Specifically, the side right-angle connection blocks 2 and the 45° angle connection blocks 4 are used for the assembly of single-layer truss units, and the inner right-angle connection blocks 3 and the center connection blocks 5 are used for the assembly of multi-layer truss units.

[0059] like Figure 1 As shown, a plurality of external connection holes 12 are provided on the outer right-angled sides of the triangular assembly unit 1. The external connection holes 12 are threaded holes, which can assist in the fastening connection between the upper and lower layers of the multi-layer truss unit with the bolt assembly, thereby enhancing the structural strength of the multi-layer truss bridge after assembly.

[0060] like Figure 1 、 2 As shown in Figures 8, 9 and 16, the assembly connection parts also include a longitudinal support frame 7 and a transverse support frame 8. The longitudinal support frame 7 and the transverse support frame 8 are both rectangular, and the center is hollowed out to provide a cross support rod 18; both ends of the longitudinal support frame 7 and the transverse support frame 8 are provided with support connection holes 17, and the support connection holes 17 are detachably fixedly connected to the outer connection holes 12 provided on the outer right-angled side of the triangular assembly unit 1 and the inner connection holes 13 (the inner connection holes 13 are threaded holes) provided on the inner right-angled side through bolt assemblies, and are used for connecting two rows of truss units to realize the assembly of double-row truss bridges, and ensure the spatial stability of the span of the assembled multi-row truss bridge, withstand additional horizontal load adjustments and balance the uneven overload effects between the main beams.

[0061] like Figure 10 and 17As shown, the assembly connection also includes a connecting plate 9, and connecting plate connecting holes 19 are provided at both ends of the connecting plate 9. The connecting plate connecting holes 19 are detachably fixedly connected to the internal connecting holes 13 provided on the right-angled side of the triangular assembly unit 1 through a bolt assembly, and are used to connect the third row of truss units on the basis of the double row of truss units to realize the assembly of three rows of truss bridges.

[0062] like Figure 2 、 11 , 12 and 18, the diagonal brace 10 includes a brace and diagonal brace connecting holes 21 arranged at both ends of the brace. The diagonal brace connecting holes 21 can be detachably fixedly connected to the inner connecting holes 13 provided on the right-angled side of the triangular assembly unit 1 and the ear holes 14 provided on the crossbeam 10 (the crossbeam 10 is a standard crossbeam 10 of an assembled highway steel bridge, and its upper end has ear holes 14) through bolt assemblies. The crossbeam 10 is detachably fixedly connected to the two assembled truss units through the connection structure of the above-mentioned diagonal brace 20 to form a truss bridge.

[0063] like Figure 23 、 24 As shown in Figures 25 and 26, by assembling the above-mentioned several triangular assembly units 1, beams 10 and assembly connectors, the multi-layer and multi-row truss bridge of Solution 2 can be realized.

[0064] Example 3:

[0065] This embodiment provides an assembled highway steel bridge, including the multi-layer and multi-row truss bridges, bridge deck system, connection system and bridge foundation in the above-mentioned embodiment one or two. The bridge deck system is installed on the assembled truss bridge, and the assembled truss bridge is fixedly connected to the bridge foundation through the connection system.

[0066] The multi-layer and multi-row truss bridges in the above-mentioned embodiment 1 or 2 can be used in conjunction with the bridge deck system, connection system, etc. of the existing prefabricated highway steel bridge. They can not only completely replace the truss structure of the prefabricated highway steel bridge, but also partially replace the truss plates of the prefabricated highway steel bridge, thereby reducing production costs.

[0067] In summary, the present invention utilizes triangular assembly units as modular truss pieces, reducing the weight of individual truss pieces and facilitating transport. A truss bridge can be constructed using crossbeams and various connecting blocks in conjunction with single pins, simplifying the construction process and shortening installation time. Modular truss pieces, crossbeams, and various assembly connectors can be used to construct a variety of multi-layer, multi-row truss bridge structures, meeting the diverse requirements of building prefabricated highway steel bridges. When spanning obstacles (ravines, rivers, canyons, etc.) of short length, single-row, single-layer bridges of Schemes 1 and 2 can be employed to ensure the passage of conventional vehicles. When spanning obstacles of longer lengths or heavier vehicles, multi-row, multi-layer bridges of Schemes 1 and 2 can be employed, depending on the situation, to ensure the bridge's load-bearing capacity meets traffic requirements. The greater the number of rows and layers employed, the greater the length of the obstacle the bridge can span and the greater its load-bearing capacity.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An assembled truss bridge, characterized in that: It includes several triangular assembly units, beams and assembly connectors; The triangular assembly unit is formed by connecting a pair of 45° right-angled triangular plates; The assembly connector includes a side right-angle connection block, an inner right-angle connection block, a 45° angle connection block, a center connection block and a web member; A plurality of the cross beams are detachably fixedly connected between two groups of truss units formed by detachably assembling a plurality of triangular assembling units through a plurality of assembling connectors; The pair of 45° right-angled triangular plates are spaced apart at their 45° angles and right angles and are each provided with a first pin hole; the web member includes a rod body and first pin holes provided at both ends of the rod body; the side right-angle connecting blocks, the inner right-angle connecting blocks, the 45° angle connecting blocks, and the center connecting blocks are each provided with a second pin hole; the second pin holes match the first pin holes and are detachably fixedly connected by a plurality of single pins; The assembly connection also includes a longitudinal support frame and a transverse support frame. The longitudinal support frame and the transverse support frame are both rectangular, and the center is hollowed out to provide a cross support rod; both ends of the longitudinal support frame and the transverse support frame are provided with support connection holes, and the support connection holes are detachably fixedly connected to the external connection holes provided on the outer right-angled side of the triangular assembly unit and the internal connection holes provided on the inner right-angled side through bolt assemblies.

2. The assembled truss bridge according to claim 1, characterized in that: A plurality of external connection holes are provided on the outer right-angled sides of the triangular assembly unit, which are used for fastening connection between the upper and lower layers of the multi-layer truss unit.

3. The assembled truss bridge according to claim 1, characterized in that: The assembly connector also includes a connecting plate, with connecting plate connecting holes provided at both ends of the connecting plate. The connecting plate connecting holes are detachably fixedly connected to the inner connecting holes provided on the right-angled sides of the triangular assembly unit through bolt assemblies.

4. The assembled truss bridge according to claim 1, characterized in that: The crossbeam is detachably fixedly connected to the two assembled truss units through diagonal braces. The diagonal braces include a brace rod and diagonal brace connecting holes arranged at both ends of the brace rod. The diagonal brace connecting holes are detachably fixedly connected to the internal connecting holes on the right-angled sides of the triangular assembly unit and the ear holes on the crossbeam through bolt assemblies.

5. An assembled highway steel bridge, characterized in that: The invention comprises the assembled truss bridge, the bridge deck system, the connection system and the bridge foundation as described in any one of claims 1 to 4, wherein the bridge deck system is installed on the assembled truss bridge, and the assembled truss bridge is fixedly connected to the bridge foundation through the connection system.

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