Track beam for suspended monorail traffic and suspended monorail traffic bridge

Abstract

The present invention relates to a track beam for suspended monorail transportation, comprising a beam top plate, an open beam bottom plate and a plurality of beam webs, the plate surface of the beam web is parallel to the longitudinal direction of the track and the upper and lower ends are respectively connected to the beam top plate and the beam bottom plate, each beam web is distributed on both lateral sides of the beam bottom plate running area and the number of beam webs on at least one side is not less than 2 to form a side box area. It also relates to a suspended monorail transportation bridge, comprising a supporting structure and two groups of the above-mentioned track beams, the two groups of track beams are connected by a transverse tie beam, and the transverse tie beam is supported on the supporting structure. By adopting a side box-type cross-section, a closed shear flow can be formed when subjected to force, the rigidity and structural strength of the track beam are significantly improved, and the driving comfort is also greatly improved, so that the design span of the suspended monorail can be increased and the application scope of the suspended monorail transportation can be broadened.

Description

Technical Field

[0001] The invention belongs to the technical field of rail transportation, and in particular relates to a track beam used for suspended monorail transportation and a suspended monorail transportation bridge using the track beam. Background Art

[0002] Different from the traditional track beam, the track beam of the suspended monorail system bridge is the key component to achieve its spanning capacity. In the suspended monorail, the running wheels and steering wheels of the marshaling train are located in the track beam, the running wheels run on the bottom plate of the beam, and the steering of the train is achieved by the contact between the steering wheels and the web of the beam. At the same time, the cables and pipelines of the line are also placed in the track beam.

[0003] To meet the limit requirements, the track beam section is an open box beam at the bottom. The open box section cannot form a closed loop due to the shear flow, and the torsional rigidity is small. Under the action of eccentric loads, a large displacement will occur, which seriously affects the driving comfort. In order to meet the design requirements, only a smaller span can be used, which restricts the scope of application of the suspended monorail. Summary of the invention

[0004] The invention relates to a track beam for suspended monorail traffic and a suspended monorail traffic bridge using the track beam, which can at least solve some defects of the prior art.

[0005] The present invention relates to a track beam for suspended monorail transportation, comprising a beam top plate and an open beam bottom plate, and also comprising a plurality of beam webs arranged in parallel and at intervals, wherein the plate surface of the beam webs is parallel to the longitudinal direction of the track and the upper and lower ends are respectively connected to the beam top plate and the beam bottom plate, and each of the beam webs is distributed on both lateral sides of a beam bottom plate running area and the number of beam webs on at least one side is not less than two to form a side box area.

[0006] As one of the implementation modes, the side box area has at least one side box chamber; at least part of the side box chamber is provided with a transverse partition, and the transverse partition is vertically intersected and connected with two beam webs of the corresponding side box chamber.

[0007] As one of the implementation modes, a lateral end of the transverse partition away from the beam bottom plate running zone is provided with a protrusion, and the protrusion is penetrated through the corresponding beam web and welded to the beam web.

[0008] As one of the implementation modes, the upper and lower ends of the transverse partition are respectively connected to the beam top plate and the beam bottom plate.

[0009] As one of the implementation modes, the side box area has at least one side box chamber, and at least a portion of the side box chamber is filled with concrete.

[0010] As one of the implementation modes, the track beam for suspended monorail transportation further includes annular stiffening ribs, which are respectively connected to the beam top plate and the beam bottom plate and are continuous structures on at least one side of the beam bottom plate opening area.

[0011] As one of the implementation modes, a bottom plate stiffening rib is provided at the bottom of the beam bottom plate.

[0012] The present invention also relates to a suspended monorail traffic bridge, comprising a supporting structure and two sets of track beams as described above for suspended monorail traffic, the two sets of track beams being connected by a transverse tie beam supported on the supporting structure.

[0013] As one of the implementation modes, each group of track beams has only one side box area and is located on a side of the track beam close to the cross tie beam.

[0014] As one of the implementation modes, the bridge is a cable-stayed bridge or an arch bridge, and the cables are tensioned and anchored in the side box areas on the corresponding sides.

[0015] The present invention has at least the following beneficial effects:

[0016] The track beam provided by the present invention adopts a side box-type cross-section, which can form a closed shear flow when subjected to force, and thus has greater torsional rigidity; since the rigidity and structural strength of the track beam are significantly improved, the driving comfort is also greatly improved, thereby increasing the design span of the suspended monorail and broadening the scope of application of the suspended monorail transportation. On the basis of not setting a crossbeam or setting a small number of crossbeams, the stress and deformation control problems of a small curve radius can be met, and the appearance of the curved beam can be basically consistent with that of the straight beam without change. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0018] Figure 1 A schematic diagram of a cross-sectional structure of a track beam without annular stiffening ribs provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the cross-sectional structure of a track beam at the annular stiffening rib provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the installation process of the diaphragm and the beam web provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a track beam structure filled with concrete provided in an embodiment of the present invention;

[0022] Figure 5 and Figure 6 A schematic structural diagram of a suspended monorail traffic bridge provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] like Figure 1-Figure 4 An embodiment of the present invention provides a track beam 1 for suspended monorail transportation, comprising a beam top plate 11, an open beam bottom plate 12, and a plurality of beam webs 13 arranged in parallel and spaced apart, wherein the plate surface of the beam web 13 is parallel to the longitudinal direction of the track and the upper and lower ends are respectively connected to the beam top plate 11 and the beam bottom plate 12, and each of the beam webs 13 is distributed on both lateral sides of the running area of ​​the beam bottom plate 12 and the number of the beam webs 13 on at least one side is not less than 2 to form a side box area.

[0026] The opening structure of the above-mentioned beam bottom plate 12 is a conventional technology in this field, and the length direction of its opening groove is parallel to the longitudinal direction of the track, which is convenient for the arrangement and operation of the bogie, etc.; generally, the left and right sides of the opening area of ​​the beam bottom plate 12 can be used for the running wheels and constitute the above-mentioned running area of ​​the beam bottom plate 12, and a beam web 13 is respectively provided on the left and right sides / lateral sides of the running area of ​​the beam bottom plate 12, and the two beam webs 13 must meet the contact with the steering wheel to assist in completing the steering of the train.

[0027] In the side box area, two adjacent beam webs 13 can be surrounded by the beam top plate 11 and the beam bottom plate 12 to form a side box chamber. The side box chamber / side box area is a closed structure that can form a closed shear flow. Subsequently, when the above-mentioned track beam 1 is subjected to force, a closed shear flow can be formed, and therefore it has greater torsional stiffness.

[0028] In this embodiment, preferably, a side box area is formed only on one side of the track beam 1 / one of the lateral sides of the beam bottom plate 12 running area, and the side box area has two beam webs 13. According to design requirements, the overall stiffness and strength of the track beam 1 can be adjusted by adjusting the spacing between the two beam webs 13 (that is, the width of the side box area); then only one beam web 13 is set on the other side. In the case where the above-mentioned track beam 1 is applied to double-track single-track transportation, the above-mentioned side box area is preferably located on the inner side of the vehicle running line, that is, on the side of the track beam 1 close to another track beam 1, and the structural strength and stiffness of the corresponding beam section are achieved by adjusting the width of the side box area; and track beams 1 with different spans and curvatures, as well as different parts of the track beam 1, can adopt a unified facade profile (that is, only one beam end with a beam web 13 is set), which can avoid visual confusion caused by different beam body profiles and affect the aesthetic effect on the one hand, and can significantly reduce the manufacturing and installation costs on the other hand.

[0029] The track beam 1 provided in this embodiment adopts a side box-shaped cross section, which can significantly increase its own rigidity and structural strength, greatly improve driving comfort, thereby increasing the design span of the suspended monorail and broadening the scope of application of the suspended monorail transportation. It can meet the stress and deformation control problems of small curve radii without or with fewer cross beams, and can make the appearance of the curved beam basically consistent with that of the straight beam without change.

[0030] Further optimize the structure of the track beam 1, such as Figure 1-Figure 3 At least part of the side box chamber is provided with a transverse partition 14, and the transverse partition 14 is perpendicularly connected to the two beam webs 13 of the corresponding side box chamber; it can be understood that the plate surface of the transverse partition 14 is perpendicular to the longitudinal direction of the track, wherein preferably there are multiple transverse partitions 14 in one side box chamber, and the multiple transverse partitions 14 are arranged in sequence along the longitudinal direction of the track. By adding transverse partitions 14, the structural integrity of the side box area and the stability and reliability of force transmission can be improved. Furthermore, the upper and lower ends of the transverse partition 14 are respectively connected to the beam top plate 11 and the beam bottom plate 12, so as to further improve the structural strength and rigidity of the track beam 1.

[0031] For the installation of the above-mentioned diaphragm 14, it is preferably welded to the corresponding two beam webs 13, the beam top plate 11 and the beam bottom plate 12 respectively. In one embodiment, as Figure 1-Figure 3The transverse end of the transverse diaphragm 14 away from the running area of ​​the beam bottom plate 12 is provided with a protrusion 141, which is penetrated on the corresponding beam web 13 and welded to the beam web 13; the height of the protrusion 141 is preferably less than the height of the transverse diaphragm 14, and a groove of corresponding height is provided on the beam web 13 to allow the protrusion 141 to pass through. Based on the above structure, on the one hand, the protrusion 141 cooperates with the groove on the beam web 13 to facilitate the alignment and assembly between the transverse diaphragm 14 and the corresponding beam web 13, and on the other hand, the outside welding method can be adopted, which is simple and convenient to operate and can ensure the welding quality. Specifically, during processing and manufacturing, the cross partition 14 is first welded together with the beam top plate 11, the beam bottom plate 12 and one of the beam webs 13 (welded to the lateral end of the cross partition 14 close to the running area of ​​the beam bottom plate 12), and then the other beam web 13 is inserted into the cross partition 14 in a manner in which the protrusion 141 and the through groove are interlaced with each other, and then welded outside the box to form a complete beam cross section.

[0032] In an optional embodiment, if Figure 4 The side box area has at least one side box chamber, at least part of which is filled with concrete 17. The concrete 17 is preferably cast-in-place, and corresponding cast-in-place holes are opened on the beam top plate 11. By filling the side box area with concrete 17, it can play a role in weighting, so as to solve a series of problems caused by the suspended track beam 1 being too light and too soft, and meet the requirements of adjusting the fundamental frequency of the structure.

[0033] More preferably, if Figure 2 The track beam 1 for suspended monorail transportation also includes annular stiffening ribs 16, which are respectively connected to the beam top plate 11 and the beam bottom plate 12 and are continuous structures on at least one side of the opening area of ​​the beam bottom plate 12. By providing the annular stiffening ribs 16, the structural strength and rigidity of the track beam 1 can be further improved; in particular, when no side box area is provided on the facade side of the track beam 1, the annular stiffening ribs 16 are continuous structures on the facade side, which can improve the force-bearing performance of the beam body on the side without the side box area. In addition, Figure 1-Figure 4 The bottom of the beam bottom plate 12 is provided with a bottom plate stiffening rib 15 , and the bottom plate stiffening rib 15 can extend longitudinally along the track to improve the structural strength and rigidity of the beam bottom plate 12 .

[0034] Embodiment 2

[0035] like Figure 5 and Figure 6 An embodiment of the present invention provides a suspended monorail traffic bridge, including a supporting structure, and also includes two groups of track beams 1 for suspended monorail traffic provided in the above-mentioned embodiment 1, the two groups of track beams 1 are connected by a transverse tie beam 2, and the transverse tie beam 2 is supported on the supporting structure.

[0036] As mentioned above, the track beam 1 has only one side box area and is located on the side of the track beam 1 close to the cross beam 2. The structural strength and rigidity of the corresponding beam section can be achieved by adjusting the width of the side box area; track beams 1 with different spans and curvatures, as well as different parts of the track beam 1, can adopt a unified facade profile. Accordingly, the side box area can be connected to the cross beam 2, so that the force transmission is smooth and the force is reliable.

[0037] As described above, since the track beam 1 has a side box structure, the application scope of the suspended monorail traffic can be broadened. The suspended monorail traffic bridge can be a simply supported beam or a continuous beam, which can be connected to the transverse tie beam 2 through the side box area; the suspended monorail traffic bridge can also be a cable-stayed bridge or an arch bridge, and the cable is tensioned and anchored in the side box area on the corresponding side. Using the side box as a steel anchor box can facilitate the anchoring of the cable on the beam and ensure the construction quality.

[0038] In one embodiment, if Figure 6 As shown, the supporting structure includes a bridge pier 3, a pier cap beam 31 is provided on the top of the bridge pier 3, and the bottom of the transverse tie beam 2 is supported on the pier cap beam 31 of the bridge pier 3 through a support 32. Preferably, the upper edge of the transverse tie beam 2 can be designed and arranged flush with the upper edge of the track beam 1. In this embodiment, the originally separated two-line track beams 1 are connected as a whole through the transverse tie beam 2, and the conventional single-line beams that are independent of each other are converted into double-line beams, and a support 32 is provided below the transverse tie beam 2 to support the pier cap beam 31 of the bridge pier 3, so that the load transfer path on the track beam 1 is transverse tie beam 2-support 32-pier cap beam 31, which improves the lateral stiffness of the double-line track beam structure and improves driving comfort; at the same time, the bridge pier 3 of this embodiment does not need to be cantilevered higher than the track beam 1, and the pier cap beam 31 is arranged below the transverse tie beam 2, which reduces the structural height of the bridge pier 3, greatly saves the amount of steel used, and improves the aesthetics.

[0039] Furthermore, the bridge pier 3 is a T-shaped pier, and its pier body is located between the two track beams 1, and the edge of the pier body does not intrude into the vehicle limit suspended on the track beam 1. The pier top cap beam 31 is set in the lower half of the space between the two track beams 1, and the lower edge of the end of the pier top cap beam 31 is flush with the lower edge of the track beam 1 and does not intrude into the vehicle limit suspended on the track beam 1; this structural design makes the cross tie beam 2 + pier top cap beam 31 structure not higher than the cross section of the track beam 1, ensuring the continuity of the appearance of the track beam 1, which is conducive to increasing the transparency of the landscape.

[0040] Furthermore, in order to facilitate transportation, the cross beam 2 can be designed as an assembled structure. In one embodiment, the cross beam 2 is longitudinally divided into two half beams from the middle position of the two track beams 1, and the two half beams are spliced ​​into a whole through a connecting component. In this way, when the single-side track beam is manufactured in the factory, half of the beam can be manufactured simultaneously, and during on-site construction, the two half beams can be spliced ​​into a whole through the connecting component set in the middle of the beam 3. Specifically, Figure 6 The connection assembly includes a splicing plate 22 and a high-strength bolt 21. The high-strength bolt 21 and the splicing plate 22 are used to connect the two half beams into a whole. At the same time, a hand hole 23 is provided at the splicing of the two half beams to facilitate the tightening of the high-strength bolt 21.

[0041] Furthermore, the supports 32 between the transverse tie beam 2 and the bridge pier 3 are located at both ends of the bridge pier 3, and the lateral spacing of the supports 32 is increased as much as possible to improve the stability of the main beam; preferably, the supports 32 are three-way adjustable supports to adapt to the settlement and deformation generated during operation. At the same time, the supports 32 can be lifted and replaced, and the bolt connection of the transverse tie beam 2 can be released to replace the track beam 1, which is convenient for maintenance and repair. The double-track track beam support system of this embodiment can adjust the spatial position of the track beam 1 by two means. One is to use the bolt connection of the transverse tie beam 2 to achieve adjustment within a certain accuracy range during the construction period, and the other is to use a three-way adjustable support to achieve the adjustment of the beam body shape during the construction period and the operation stage. The construction accuracy requirements are relatively low, and the maintenance and repair during the operation period are convenient.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A track beam for suspended monorail transportation, comprising a beam top plate and an open beam bottom plate, characterized in that: It also includes a plurality of beam webs arranged in parallel and at intervals, wherein the surface of the beam webs is parallel to the longitudinal direction of the track and the upper and lower ends are respectively connected to the beam top plate and the beam bottom plate, and each of the beam webs is distributed on both sides of the beam bottom plate running area in the transverse direction and the number of beam webs on at least one side is not less than 2 to form a side box area; The side box area has at least one side box room; at least part of the side box room is provided with a transverse partition, and the transverse partition is perpendicularly intersected and connected with two beam webs of the corresponding side box room; The transverse end of the transverse diaphragm away from the beam bottom plate running area is provided with a protrusion, the protrusion is penetrated on the corresponding beam web and welded to the beam web; The upper and lower ends of the transverse partition are respectively connected to the beam top plate and the beam bottom plate.

2. The track beam for suspended monorail transportation according to claim 1, characterized in that: The side box area has at least one side box chamber, and at least a portion of the side box chamber is filled with concrete.

3. The track beam for suspended monorail transportation according to claim 1, characterized in that: It also includes annular stiffening ribs, which are respectively connected to the beam top plate and the beam bottom plate and are continuous structures on at least one side of the beam bottom plate opening area.

4. The track beam for suspended monorail transportation according to claim 1, characterized in that: The bottom of the beam bottom plate is provided with a bottom plate stiffening rib.

5. A suspended monorail traffic bridge, comprising a supporting structure, characterized in that: It also includes two groups of track beams for suspended monorail transportation as described in any one of claims 1 to 4, the two groups of track beams are connected by a transverse tie beam, and the transverse tie beam is supported on the supporting structure.

6. The suspended monorail traffic bridge according to claim 5, characterized in that: Each set of track beams has only one side box area and is located on a side of the track beam close to the cross tie beam.

7. The suspended monorail traffic bridge according to claim 5, characterized in that: The bridge is a cable-stayed bridge or an arch bridge, and the cables are tensioned and anchored in the side box areas on the corresponding sides.

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