Large-span half-through continuous pipe truss arch bridge coal conveying trestle

Abstract

The large-span half-through continuous pipe truss arch bridge coal conveying trestle comprises a plurality of main arch ribs, parallel chord truss structures and supports, the parallel chord truss structures are continuously arranged and fixed to the top ends of the supports, the two ends of the main arch ribs are connected with the side faces of the two supported supports respectively, and the parallel chord truss structures are connected with the main arch ribs. The main arch rib and the parallel chord truss structure are connected through a plurality of suspenders, and the integral half-through continuous pipe truss arch bridge system is jointly formed through penetration welding connection. The large-span half-through continuous pipe truss arch bridge coal conveying trestle solves the problem that space waste is caused by an existing coal conveying trestle in a large-span steel truss coal conveying trestle.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering equipment technology, specifically relating to a coal conveying trestle bridge for a large-span, mid-span continuous tubular truss arch bridge. Background Technology

[0002] In existing technologies, when transporting coal via steel truss trestle bridges, the bridge corridor structure of conventional steel coal conveying trestle bridges mostly adopts a parallel chord truss type for coal conveying trestle bridges with spans less than 60 meters. The bridge corridor structure is supported at both ends on the supports of the bracket structure. Especially for large-span coal conveying trestle bridges with spans of 60 to 100 meters, if traditional parallel chord trusses are used, the height of the steel truss is 6 to 10 meters depending on the rise-to-span ratio, while the internal process only requires a height of 3 meters. This not only wastes space but also increases the load-bearing area of ​​the structure and weakens the torsional stiffness of the steel bridge. Moreover, most coal conveying trestle bridges are arranged as independent single-span simply supported trusses. Utility Model Content

[0003] The purpose of this utility model is to provide a large-span, mid-span, continuous tubular truss arch bridge coal conveying trestle, which solves the problem of wasted space caused by existing coal conveying trestle bridges in large-span steel truss coal conveying trestle bridges.

[0004] The technical solution adopted in this utility model is: a large-span, mid-span continuous tubular truss arch bridge coal conveying trestle, including several main arch ribs, parallel chord truss structures and supports. Several parallel chord truss structures are continuously arranged and fixed to the top of several supports. The two ends of several main arch ribs are respectively connected to the sides of two supporting supports. The main arch ribs and parallel chord truss structures are connected by several hangers. They are connected by intersecting welding to form an integral mid-span continuous tubular truss arch bridge system.

[0005] The present invention is further characterized in that:

[0006] Furthermore, the parallel chord truss structure consists of an upper chord roof support structure and a lower chord floor support structure. The roof support structure and the floor support structure are connected by several vertical connecting rods, and the connection nodes are evenly distributed.

[0007] Furthermore, the floor support structure includes two floor longitudinal beams, several floor horizontal supports, and several floor transverse beams; the two floor longitudinal beams are respectively connected to the two axial bottom ends of the parallel chord truss structure, and several floor transverse beams are hinged between the two floor longitudinal beams and at equal intervals along their axial direction. A herringbone-shaped floor horizontal support is provided between two adjacent floor transverse beams, and the end of each floor horizontal support is hinged to the end of the floor transverse beam closest to it.

[0008] Furthermore, the roof support structure includes two roof longitudinal beams, several roof horizontal supports, and several roof transverse beams; the two roof longitudinal beams are respectively connected to the two axial top ends of the parallel chord truss structure, and several roof transverse beams are hinged between the two roof longitudinal beams and at equal intervals along their axial direction. A gable-shaped roof horizontal support is provided between two adjacent roof transverse beams, and the end of each roof transverse beam is hinged to the end of its nearest floor transverse beam.

[0009] Furthermore, the parallel chord truss structure has corner braces on both sides of the bottom of the roof support structure, and the corner braces are hinged to the parallel chord truss structure.

[0010] Furthermore, the main arch rib is an arc-shaped parabolic structure. The out-of-plane portion of the main arch rib includes two arch ribs, several horizontal supports for the arch ribs, and several horizontal members for the arch ribs. The horizontal members of the arch ribs vertically connect the two arch ribs, and horizontal supports for the arch ribs are provided between each pair of horizontal members. The horizontal supports for the arch ribs adopt a cross-bracing structure. The connection nodes between the horizontal supports and the horizontal members of the arch ribs and the arch ribs are all hinged. The connection method between the main arch rib and the parallel chord truss structure is through intersecting welding.

[0011] Furthermore, each equally spaced connection node of the arch rib is connected to the roof longitudinal beam of the parallel chord truss structure below by a vertical hanger. The hangers are connected to both sides of the arch rib and the roof longitudinal beam by pins, and the node type is hinged.

[0012] Furthermore, the main arch rib, parallel chord truss structure, and support frame work together as a whole to bear the load.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a mid-span continuous tubular truss arch bridge, which adopts a combined structure of a mid-span arch bridge and a continuous parallel chord truss. The parallel chord truss and the mid-span arch share the load, combining the axial bearing capacity of an arch bridge with the high bending resistance of a truss. The process coal conveying corridor of the mid-span arch bridge is located in the middle of the arch rib rise. The continuous arch design enhances the overall rigidity and seismic performance by optimizing the rise-to-span ratio of the main arch (1 / 8). The continuous truss encloses the coal conveying area, which not only does not expand the usable space inside the process area, but also does not increase the lateral load-bearing area of ​​the trestle. The tubular arch uses circular steel pipes as arch ribs. The circular arch ribs bear less wind load, and the exposed upper structure has smooth lines. Combined with the arch curve, it forms a modern industrial aesthetic feature, suitable for sites with high aesthetic requirements and complex terrain.

[0015] This utility model of a large-span, mid-span continuous truss arch bridge for coal conveying can maximize the use of equipment space by setting up a continuous truss structure and a mid-span continuous arch bridge. It has strong torsional stiffness, and the structure is stable, safe and reliable. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the coal conveying trestle of the large-span, mid-span, continuous tubular truss arch bridge of this utility model;

[0017] Figure 2 This is a longitudinal cross-sectional view of the coal conveying trestle of the large-span, mid-span continuous tubular truss arch bridge of this utility model.

[0018] Figure 3 This is a schematic diagram of the arch rib support structure of the coal conveying trestle of the large-span, mid-span continuous tubular truss arch bridge of this utility model.

[0019] Figure 4 This is a schematic diagram of the roof and floor support structure of the coal conveying trestle of the large-span, mid-span, continuous tubular truss arch bridge of this utility model;

[0020] Figure 5 This is a transverse sectional view of the coal conveying trestle of the large-span, mid-span continuous tubular truss arch bridge of this utility model.

[0021] In the diagram, 1. Main arch rib, 2. Hanger, 3. Parallel chord truss structure, 4. Horizontal support for arch rib, 5. Horizontal member of arch rib, 6. Floor support structure, 7. Roof support structure, 8. Floor beam, 9. Roof beam, 10. Floor longitudinal beam, 11. Horizontal support for floor, 12. Horizontal support for roof, 13. Longitudinal beam of roof, 14. Corner brace, 15. Bracket, 16. Arch rib, 17. Connecting rod. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] This utility model discloses a large-span, mid-span, continuous tubular truss arch bridge coal conveying trestle. The large-span, mid-span, continuous tubular truss arch bridge coal conveying trestle includes a main arch rib 1, a lower suspension rod 2 suspended from the main arch rib 1, and the lower suspension rod 2 connected to a parallel chord truss structure 3. A portion of the main arch rib 1 is supported on a steel column support 15. The parallel chord truss structure 3 is arranged in a continuous manner.

[0024] The main arch rib 1 adopts an arc-shaped parabola. Both ends of the main arch rib 1 are connected to the supporting brackets 15, with hinged joints at each node. The main arch rib 16 is connected to the nodes of the parallel chord truss of the lower bridge deck system via vertical hangers every other section, with hinged connections at these nodes. The vertical hangers 2, the main arch rib 1, and the parallel chord truss structure 3 are all hinged connections. The center-to-center distance of the main arch rib 1 is the distance between two sections of the parallel chord truss structure 3. The connection between the main arch rib 1 and the parallel chord truss structure 3 is achieved through intersecting welding.

[0025] Out-of-plane bracing for arch rib 16 is used as horizontal support 4. Arch rib crossbars 5 and horizontal supports 4 together form a lateral resistance system between arch ribs 16. All nodes of the horizontal supports 4 and tie rods to arch rib 16 are hinged. The center distance of arch rib 16 is the distance between two sections of the main truss. All components are made of steel pipe, and the connection method is intersecting welding. The connection between arch rib 16 and steel support 15 is a hinged node.

[0026] The coal conveying trestle bridge deck adopts a parallel chord continuous truss. Every other section is suspended from the main arch rib 16 node by hangers 2, and then fixed to the support 15. This is equivalent to the large span being jointly stressed by the parallel chord truss and the mid-span arch bridge. The thrust of the arch and the bending moment of the parallel chord truss are borne by the supporting supports. The main arch rib 1, the parallel chord truss structure 3, and the support 15 are subjected to stress as a whole.

[0027] The parallel chord truss structure 3 consists of several herringbone-shaped roof truss upper chord horizontal supports and several herringbone-shaped floor lower chord horizontal supports.

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] The long-span, mid-span continuous tubular truss arch bridge for coal conveying includes several main arch ribs 1, parallel chord truss structures 3, and supports 15. The parallel chord truss structures 3 are continuously arranged and fixed to the top of the supports 15. The two ends of the main arch ribs 1 are respectively connected to the sides of the two supporting supports 15. The main arch ribs 1 and the parallel chord truss structures 3 are connected by several hangers 2. They are connected by intersecting welds to form an integral mid-span continuous tubular truss arch bridge system.

[0031] The parallel chord truss structure 3 consists of an upper chord roof support structure 7 and a lower chord floor support structure 6. The roof support structure 7 and the floor support structure 6 are connected by several vertical connecting rods 17, and the connection nodes are evenly distributed.

[0032] Example 2

[0033] The long-span, mid-span continuous tubular truss arch bridge for coal conveying includes several main arch ribs 1, parallel chord truss structures 3, and supports 15. The parallel chord truss structures 3 are continuously arranged and fixed to the top of the supports 15. The two ends of the main arch ribs 1 are respectively connected to the sides of the two supporting supports 15. The main arch ribs 1 and the parallel chord truss structures 3 are connected by several hangers 2. They are connected by intersecting welds to form an integral mid-span continuous tubular truss arch bridge system.

[0034] The parallel chord truss structure 3 consists of an upper chord roof support structure 7 and a lower chord floor support structure 6. The roof support structure 7 and the floor support structure 6 are connected by several vertical connecting rods 17, and the connection nodes are evenly distributed.

[0035] The floor support structure 6 includes two floor longitudinal beams 10, several floor horizontal supports 11, and several floor transverse beams 8. The two floor longitudinal beams 10 are respectively connected to the two axial bottom ends of the parallel chord truss structure 3. Several floor transverse beams 8 are hinged between the two floor longitudinal beams 10 and at equal intervals along their axial direction. A herringbone-shaped floor horizontal support 11 is provided between two adjacent floor transverse beams 8. The end of each floor horizontal support 11 is hinged to the end of the floor transverse beam 8 closest to it.

[0036] The roof support structure 7 includes two roof longitudinal beams 13, several roof horizontal supports 12, and several roof transverse beams 9. The two roof longitudinal beams 13 are respectively connected to the two axial top ends of the parallel chord truss structure 3. Several roof transverse beams 9 are hinged between the two roof longitudinal beams 13 and at equal intervals along their axial direction. A herringbone roof horizontal support 12 is provided between two adjacent roof transverse beams 9. The end of each roof transverse beam 9 is hinged to the end of its nearest floor transverse beam 8.

[0037] Inside the parallel chord truss structure 3, corner braces 14 are provided on both sides of the bottom of the roof support structure 7, and the corner braces 14 are hinged to the parallel chord truss structure 3.

[0038] Example 3

[0039] The long-span, mid-span continuous tubular truss arch bridge for coal conveying includes several main arch ribs 1, parallel chord truss structures 3, and supports 15. The parallel chord truss structures 3 are continuously arranged and fixed to the top of the supports 15. The two ends of the main arch ribs 1 are respectively connected to the sides of the two supporting supports 15. The main arch ribs 1 and the parallel chord truss structures 3 are connected by several hangers 2. They are connected by intersecting welds to form an integral mid-span continuous tubular truss arch bridge system.

[0040] The parallel chord truss structure 3 consists of an upper chord roof support structure 7 and a lower chord floor support structure 6. The roof support structure 7 and the floor support structure 6 are connected by several vertical connecting rods 17, and the connection nodes are evenly distributed.

[0041] The floor support structure 6 includes two floor longitudinal beams 10, several floor horizontal supports 11, and several floor transverse beams 8. The two floor longitudinal beams 10 are respectively connected to the two axial bottom ends of the parallel chord truss structure 3. Several floor transverse beams 8 are hinged between the two floor longitudinal beams 10 and at equal intervals along their axial direction. A herringbone-shaped floor horizontal support 11 is provided between two adjacent floor transverse beams 8. The end of each floor horizontal support 11 is hinged to the end of the floor transverse beam 8 closest to it.

[0042] The roof support structure 7 includes two roof longitudinal beams 13, several roof horizontal supports 12, and several roof transverse beams 9. The two roof longitudinal beams 13 are respectively connected to the two axial top ends of the parallel chord truss structure 3. Several roof transverse beams 9 are hinged between the two roof longitudinal beams 13 and at equal intervals along their axial direction. A herringbone roof horizontal support 12 is provided between two adjacent roof transverse beams 9. The end of each roof transverse beam 9 is hinged to the end of its nearest floor transverse beam 8.

[0043] Inside the parallel chord truss structure 3, corner braces 14 are provided on both sides of the bottom of the roof support structure 7, and the corners 14 are hinged to the parallel chord continuous truss 3.

[0044] The main arch rib 1 is an arc-shaped parabolic structure. The main arch rib 1 includes two arch ribs 16, arch rib horizontal supports 4, and arch rib crossbars 5 outside the plane. The arch rib crossbars 5 vertically connect the two arch ribs 16. An arch rib horizontal support 4 is provided between each pair of arch rib crossbars 5. The arch rib horizontal support 4 adopts a cross-bracing structure. The connection nodes between the horizontal support 4 and the arch rib crossbars 5 and arch ribs 16 are all hinged. The center distance of the main arch rib 1 from the distance between the two sections of the main truss is all made of steel pipe, and the connection method is intersecting welding.

[0045] Each equally spaced node of the arch rib 16 is connected to the roof longitudinal beam 13 of the parallel chord truss structure 3 below by a vertical hanger 2. The hangers 2 are connected to both sides of the arch rib 16 and the roof longitudinal beam 13 by pins, and the node type is hinged.

[0046] The main arch rib 1, the parallel chord truss structure 3, and the support 15 work together as a whole to bear the load.

[0047] Example 4

[0048] This utility model relates to a large-span, mid-span, continuous tubular truss arch bridge coal conveying trestle, the structure of which is as follows: Figure 1 As shown, it includes a main arch rib 1, hangers 2, a parallel chord truss structure 3, horizontal supports 4 for the arch rib, and arch rib crossbars 5 for the arch rib; the main arch rib 1 and the parallel chord truss structure 3 are connected by several hangers 2, the parallel chord truss structure 3 is continuously arranged and fixed on the support 15, and the arch rib 1 is hinged to the side of the support 15; the large-span, mid-span, continuous tubular truss arch bridge system is formed by intersecting welds.

[0049] like Figure 3 As shown, the out-of-plane portion of arch rib 1 includes two main arch ribs 1, horizontal supports 4, and cross members 5. Cross-bracing is used as the horizontal supports 4, and the nodes connecting the horizontal supports 4 to the cross members 5 and the arch ribs 1 are all hinged. The center distance of the arch rib is the distance between two sections of the main truss. All components are made of steel pipe, and the connection method is intersecting welding.

[0050] like Figure 4 As shown, the cross-sectional structure of each coal conveying trestle includes a longitudinal arch rib 1, arch rib crossbars 5, hangers 2, and a parallel chord truss structure 3. The hangers are rigid and are connected to the upper main arch rib and the roof longitudinal beams 13 of the parallel chord truss on both sides by pins, with hinged joints. Inside the parallel chord truss, corner braces 14 are provided on both sides of the roof truss. The corner braces 14 are hinged to the parallel chord truss structure 3, and the corner braces improve the torsional stiffness.

[0051] like Figure 5 As shown, the floor support structure 6 includes two floor longitudinal beams 10, floor horizontal supports 11, and several floor transverse beams 8. The two floor longitudinal beams 10 are respectively connected to the two axial bottom ends of the parallel chord truss structure 3. Several floor transverse beams 8 are hinged between the two floor longitudinal beams 10 and at equal intervals along their axial direction. A herringbone floor support structure 6 is provided between two adjacent floor transverse beams 8. The end of each floor support structure 6 is hinged to the end of the floor transverse beam 8 closest to it.

[0052] The roof support structure 7 includes two roof longitudinal beams 13, the roof support structure 7, and several roof transverse beams 9. The two roof longitudinal beams 13 are respectively connected to the two axial top ends of the parallel chord truss structure 3. Several roof transverse beams 9 are hinged between the two roof longitudinal beams 13 and at equal intervals along their axial direction. A herringbone roof support structure 7 is provided between two adjacent roof transverse beams 9. The end of each roof transverse beam 9 is hinged to the end of the adjacent floor transverse beam 8.

[0053] Example 5

[0054] Based on Example 1, the two spans of the parallel chord truss structure 3 are made into a continuous truss. Both the continuous truss and the steel support 15 are fixed. By adopting this continuous steel truss structure, the continuous steel truss and the four-column steel support form an integral whole. It is a statically indeterminate structure, which increases the redundancy of the structure, can reduce the bending moment at the mid-span of the truss, and saves materials.

[0055] Example 6

[0056] Based on Example 2, such as Figure 1 and Figure 2 As shown, the arch rib is fixed to the support, and a portion of it suspends a parallel chord truss. The arch, continuous parallel chord truss, and support together form a whole, further increasing the static indeterminate redundancy of the structure. This ensures the formation of a multi-layered lateral force resisting system, which is equivalent to greatly improving the overall stiffness of the structure and is very beneficial for the overall torsional resistance of the structure.

[0057] Therefore, the large-span, mid-span continuous truss arch bridge coal conveying trestle of this utility model uses a continuous truss combined with mid-span arch bridge and other components to form a stable spatial overall structural system. Compared with conventional structures, this utility model uses a large-span, mid-span continuous truss arch bridge structure in a coal conveying trestle, which not only improves the overall torsional stiffness of the structure, but also makes it aesthetically pleasing and widely recommended for adoption in the coal industry.

Claims

1. A long-span half-through continuous tube truss arch bridge coal jetty, comprising a plurality of main arch ribs (1), parallel chord truss structures (3) and supports (15), characterized in that, The parallel chord truss structures (3) are arranged continuously and fixed at the top of the brackets (15). The two ends of the main arch ribs (1) are connected to the sides of the two supporting brackets (15). The main arch ribs (1) and the parallel chord truss structures (3) are connected by several hangers (2). They are connected by intersecting welding to form a whole mid-span continuous tubular truss arch bridge system.

2. The long-span half-through continuous tubular truss arch bridge coal jetty according to claim 1, characterized in that, The parallel chord truss structure (3) consists of an upper chord roof support structure (7) and a lower chord floor support structure (6). The roof support structure (7) and the floor support structure (6) are connected by several vertical connecting rods (17), and the connection nodes are evenly arranged.

3. The long-span half-through continuous tubular truss arch bridge coal jetty according to claim 2, characterized in that, The floor support structure (6) includes two floor longitudinal beams (10), several floor horizontal supports (11), and several floor transverse beams (8); the two floor longitudinal beams (10) are respectively connected to the two axial bottom ends of the parallel chord truss structure (3), and several floor transverse beams (8) are hinged between the two floor longitudinal beams (10) and at equal intervals along their axial direction. A herringbone-shaped floor horizontal support (11) is provided between two adjacent floor transverse beams (8), and the end of each floor horizontal support (11) is hinged to the end of the floor transverse beam (8) it is close to.

4. The long-span half-through continuous tubular truss arch bridge coal jetty according to claim 3, characterized in that, The roof support structure (7) includes two roof longitudinal beams (13), several roof horizontal supports (12), and several roof transverse beams (9); the two roof longitudinal beams (13) are respectively connected to the two axial top ends of the parallel chord truss structure (3), and several roof transverse beams (9) are hinged between the two roof longitudinal beams (13) and at equal intervals along their axial direction. A herringbone roof horizontal support (12) is provided between two adjacent roof transverse beams (9), and the end of each roof transverse beam (9) is hinged to the end of the floor transverse beam (8) that is close to it.

5. The coal conveying trestle of the long-span, mid-span, continuous tubular truss arch bridge according to claim 4, characterized in that, The parallel chord truss structure (3) has corner braces (14) on both sides of the bottom of the roof support structure (7) inside, and the corner braces (14) are hinged to the parallel chord truss structure (3).

6. The long span half-through continuous tubular truss arch bridge coal wharf according to claim 2, characterized in that, The main arch rib (1) is an arc-shaped parabolic structure. The main arch rib (1) includes two arch ribs (16), several arch rib horizontal supports (4), and several arch rib crossbars (5) outside the plane. The arch rib crossbars (5) are vertically connected to the two arch ribs (16). There is an arch rib horizontal support (4) between each pair of arch rib crossbars (5). The arch rib horizontal support (4) adopts a cross-bracing structure. The connection nodes between the horizontal support (4) and the arch rib crossbars (5) and the arch ribs (16) are all hinged. The connection method between the main arch rib (1) and the parallel chord truss structure (3) is through intersecting welding.

7. The long-span half-through continuous tubular truss arch bridge coal jetty according to claim 6, characterized in that, The arch rib (16) is connected to the roof longitudinal beam (13) of the parallel chord truss structure (3) below by vertical hangers (2) between each equally spaced connection node. The hangers (2) are connected to the arch rib (16) and the roof longitudinal beam (13) on both sides by pins, and the node form is hinged.

8. The long-span half-through continuous tubular truss arch bridge coal jetty according to claim 7, characterized in that, The main arch rib (1), the parallel chord truss structure (3), and the support (15) are subjected to stress as a whole.

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