A porous beam-truss roof structure system for passenger stations under high-speed railway bridges

Abstract

The present invention relates to a porous beam-truss roof structure system for passenger stations under high-speed railway bridges, comprising a porous beam, a longitudinal truss, a transverse truss, and a support system, wherein the porous beam has openings through which pipeline equipment can pass and is erected between two laterally adjacent bridge piers, the longitudinal truss is connected to the porous beam, and the transverse truss is connected to the longitudinal truss, and the two intersect; the longitudinal truss and the transverse truss are both double-layer truss structures, both including an upper chord serving as the main purlin of the passenger station roof and a lower chord serving as the main keel of the passenger station ceiling; the support system is a double-layer horizontal support system placed on the main purlin layer of the roof and the main keel layer of the ceiling, and is arranged along the four sides of the roof structure and on both sides of the porous beam. The advantages of the present invention are: it increases the effective space under the bridge, can be widely used in the roof system of passenger stations under high-speed bridges in my country, and has good application value and significant engineering economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of structural engineering, and in particular to a porous beam-truss roof structure system for a passenger station building under a high-speed railway bridge. Background Art

[0002] High-speed railway underpass passenger stations (hereinafter referred to as underpass passenger stations) are often favored by construction companies due to their efficient use of underbridge space, land conservation, and low construction costs. They are widely used in high-speed railway station building design proposals. Given the 32.7m spacing of high-speed railway piers, underpass passenger station waiting halls have traditionally employed a solid-web beam roof structure, anchored to the pier's corbels. This structural system offers simple component fabrication and installation, and allows for column-free underbridge spaces. However, this roof system's roof envelope (purlins) are superimposed on the main beams, while the equipment and piping systems are suspended below them. This takes up a significant amount of space, impacting the use of underbridge space and making it unsuitable for underpass passenger stations with low headroom. Summary of the Invention

[0003] The purpose of the present invention is to provide a porous beam-truss roof structure system for passenger stations under high-speed railway bridges based on the above-mentioned deficiencies of the existing technology. By constructing a porous beam, longitudinal trusses, transverse trusses and a support system, the low-clearance space under the high-speed railway bridge is effectively utilized, and the design and construction of passenger stations in the low-clearance space under the bridge is realized.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A porous beam-truss roof structure system for a passenger station building under a high-speed railway bridge is characterized by comprising porous beams, longitudinal trusses, transverse trusses and a support system, wherein the porous beams have openings through which equipment pipelines can pass and are erected between two laterally adjacent bridge piers, the longitudinal trusses are connected to the porous beams, and the transverse trusses are connected to the longitudinal trusses and the two intersect; the longitudinal trusses and the transverse trusses are both double-layer truss structures, both of which include upper chords serving as the main purlins of the passenger station building roof and lower chords serving as the main keels of the passenger station building ceiling; the support system is a double-layer horizontal support system placed in the main purlin layer of the roof and the main keel layer of the ceiling, and is arranged around the roof structure and on both sides of the porous beams.

[0006] Vertical and / or oblique tie rods are respectively arranged between the upper chord and the lower chord of the longitudinal truss and between the upper chord and the lower chord of the transverse truss.

[0007] The upper and lower sides of the porous beam are respectively provided with connecting plug plates. The upper chord of the longitudinal truss is connected flush with the upper flange of the porous beam through the connecting plug plate located above, and the lower chord is connected flush with the lower flange of the porous beam through the connecting plug plate located below.

[0008] The upper chord of the transverse truss is arranged between the upper chord nodes of the two adjacent longitudinal trusses, and the lower chord of the transverse truss is arranged between the lower chord nodes of the two adjacent longitudinal trusses to form a transverse hollow plane truss.

[0009] The horizontal spacing between adjacent transverse trusses is 3-5m.

[0010] The connection nodes between the transverse trusses and the longitudinal trusses are connected in the form of plug-in plates or directly connected flush.

[0011] The bridge piers are provided with corbels, and both ends of the porous beam are respectively supported on the corbels provided on two adjacent bridge piers and are bolted and fixed.

[0012] There is space for metal roof installation and space for bridge bottom inspection after completion between the porous beam and the high-speed railway bridge.

[0013] The support system is connected to the flanges of the porous beams or the chords of the longitudinal trusses and the transverse trusses respectively through insert plates.

[0014] The support system is a cross-bracing structural system composed only of tensioned round steel or steel strands.

[0015] The advantages of the present invention are:

[0016] 1) It is easy to process and install, has excellent structural performance, occupies a small space, and has reasonable force. It can be widely used in the roof system of passenger stations under high-speed railway bridges;

[0017] 2) The porous beams in the porous beam-truss roof structure can pass through equipment pipelines. The main purlins of the roof are connected flush with the upper flange of the main beams, and the main keels of the suspended ceiling are connected flush with the lower flange of the main beams. This can fully reduce the space occupied by the roof system and effectively increase the usable space under the bridge compared to traditional high-speed railway bridge roof structures.

[0018] 3) In the porous beam-truss roof structure system, the main purlin and the main keel form a cross-plane truss, which not only effectively restrains the outward displacement of the porous beam and improves its out-of-plane stability and bearing capacity, but also improves its own structural performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a plan view of the present invention (three-span bridge piers);

[0020] Figure 2This is an axonometric diagram of the present invention (three-span bridge piers);

[0021] Figure 3 is an axonometric diagram of the porous beam of the present invention;

[0022] Figure 4 is a schematic elevation view of the porous beam of the present invention;

[0023] Figure 5 This is a schematic elevation diagram of the relationship between the porous beam and the viaduct in the present invention;

[0024] Figure 6 is a schematic elevation view of the longitudinal plane truss of the present invention;

[0025] Figure 7 Schematic diagram of the connection between the longitudinal plane truss and the porous beam in the present invention;

[0026] Figure 8 This is an axonometric diagram of the connection between the transverse plane truss and the longitudinal plane truss in the present invention;

[0027] Figure 9 This is a schematic diagram of the connection axonometric view of the horizontal support system in the present invention. DETAILED DESCRIPTION

[0028] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

[0029] like Figure 1-9 As shown in the figure, marks 1-15 respectively represent: bridge pier 1, porous beam 2, longitudinal truss 3, transverse truss 4, support system 5, opening 6, railway viaduct 7, steel corbel 8, longitudinal truss upper chord 9, longitudinal truss lower chord 10, transverse truss upper chord 11, transverse truss lower chord 12, connecting plate 13, horizontal support 14, and tie rod 15.

[0030] Example: Figure 1 、 Figure 2 As shown, the porous beam-truss roof structure system for the passenger station building under the high-speed railway bridge in this embodiment is composed of four parts: porous beams 2, longitudinal trusses 3, transverse trusses 4 and support system 5. The connection method between each unit can be weld connection, bolt connection, or a combination of bolt and welding.

[0031] In this embodiment, if Figure 6As shown, both the longitudinal truss 3 and the transverse truss 4 adopt a double-layer truss structure. The longitudinal truss 3 includes a longitudinal truss upper chord 9 and a longitudinal truss lower chord 10, while the transverse truss 4 includes a transverse truss upper chord 11 and a transverse truss lower chord 12. The longitudinal truss upper chord 9 serves as the main longitudinal purlin of the passenger station building's roof, while the transverse truss upper chord 11 serves as the main transverse purlin of the passenger station building's roof. The combination of the two constitutes the main purlin of the passenger station building's roof. The longitudinal truss lower chord 10 serves as the main longitudinal purlin of the passenger station building's ceiling, while the transverse truss lower chord 12 serves as the main transverse purlin of the passenger station building's ceiling. The combination of the two constitutes the main purlin of the passenger station building's ceiling.

[0032] like Figure 3 、 Figure 4 As shown, multiple openings 6 are provided on the web of the porous beam 2 to serve as equipment pipeline passages, effectively reducing the space required for the equipment piping system and facilitating equipment construction, particularly equipment layout. In this embodiment, the porous beam 2 can be a porous steel beam. The manufacturing process is as follows: the web and flange dimensions of the porous beam 2 are calculated based on the pipeline and equipment passage layout principles, dimensional parameters, and structural performance requirements required for the passenger terminal building. The target porous beam is then formed by cutting, splicing, and welding hot-rolled steel plates, or by cutting and opening holes in the web of rolled steel sections.

[0033] like Figure 5 As shown, the porous beam 2 is erected between two adjacent piers 1 along the track direction of the high-speed railway bridge. Specifically, steel brackets 8 are set on the two adjacent piers 1, and the two ends of the porous beam 2 are respectively placed on the steel brackets 8 of the piers 1 on both sides and fixed by high-strength bolts. The bottom of the porous steel beam and the railway viaduct beam 7 retains the metal roof installation space and the bridge bottom maintenance space after completion.

[0034] like Figure 6 As shown, vertical or diagonal tie rods 15 are installed between the longitudinal main purlins of the roof (the longitudinal truss upper chord 9) and the longitudinal main purlins of the ceiling (the longitudinal truss lower chord 10). These tie rods 15 can be thin-walled seamless tubes or seamed rolled tubes, forming a longitudinal planar truss. The angle between the members of the longitudinal truss 3 should be no less than 30° and preferably greater than 45°.

[0035] like Figure 7 As shown, a protruding connecting plate 13 is provided at the position where the porous beam 2 is connected to the longitudinal truss 3. Through the connecting plate 13, the upper chord 9 of the longitudinal truss is flush connected with the upper flange of the porous beam 2, and the lower chord 10 of the longitudinal truss is flush connected with the lower flange of the porous beam 2. The connection form is welding or bolt connection, thereby realizing the connection and fixation between the porous beam 2 and the longitudinal truss 3.

[0036] like Figure 8As shown, the roof transverse main purlin (transverse truss upper chord 11) is installed between the nodes of the longitudinal truss upper chords 9 of two adjacent longitudinal trusses 3, and the ceiling transverse main purlin (transverse truss lower chord 12) is installed between the nodes of the longitudinal truss lower chords 10, forming a transverse venter-type flat truss. Furthermore, the horizontal spacing between adjacent transverse trusses is approximately 3-5 meters to ensure an economical span for the roof secondary purlins and ceiling secondary purlins. The transverse trusses 4 and longitudinal trusses 3 are connected at the joints using plug-in plates or directly intersecting.

[0037] like Figure 9 As shown, support system 5 is a double-layer horizontal support system arranged between the main roof purlins and the main ceiling keel. It includes two layers of horizontal supports 14, forming a cross-bracing structure composed solely of tensioned round steel or stranded steel. Each end of horizontal support 14 is connected to the flanges or truss chords of the porous beam 2 via insert plates, either welded or bolted. The horizontal supports 14 of support system 5 are arranged along the perimeter of the roof structure and on both sides of the porous steel beam.

[0038] During the specific implementation of this embodiment, the main roof purlins composed of the longitudinal truss upper chord 9 and the transverse truss upper chord 11 adopt longitudinal and transverse cross-thin-wall steel tubes. The longitudinal main roof purlins (longitudinal truss upper chord 9) are connected flush with the upper flange of the porous beam 2 through the connecting plug plate 13, which can effectively restrain the outward displacement of the upper flange of the porous beam 2. The transverse main roof purlins (transverse truss upper chord 11) are connected flush with the longitudinal main roof purlins through the plug plate or directly flush, and the metal roof system containing secondary purlins can be directly laid on it, which not only reduces the calculated length of the longitudinal main purlin outside the surface, but also compresses the space occupied by the roof enclosure structure.

[0039] The main ceiling purlin, formed by the longitudinal truss lower chord 10 and the transverse truss lower chord 12, is constructed of thin-walled steel tubes crisscrossing longitudinally and transversely, and lies in the same vertical plane as the longitudinal and transverse main purlins of the roof. The longitudinal main ceiling purlin (the longitudinal truss lower chord 10) is connected flush with the lower flange of the porous beam 2 via a connecting insert 13, effectively restraining outward displacement of the lower flange of the porous beam 2. Tie rods 15 are provided between the longitudinal roof main purlin and the longitudinal main ceiling purlin, forming a longitudinal plane truss structure system with superior structural performance. The transverse main ceiling purlin (the transverse truss lower chord 12) is connected flush with the longitudinal main ceiling purlin via an insert or directly flush, not only reducing the calculated out-of-plane length of the longitudinal main purlin but also compressing the space occupied by the ceiling structure. Together with the transverse main roof purlin, it forms a transverse plane venter truss structure system, improving the load-bearing capacity and robustness of the overall roof system.

[0040] The size, number, hole type and position of the porous beam 2 can be designed according to the pipeline equipment that needs to be passed through. When the porous beam 2 uses a steel beam, the design parameters such as the plate thickness, material, and reinforcement measures of the steel beam can be designed according to the load size and structural performance requirements of the steel beam.

[0041] The upper and lower chords of the longitudinal trusses 3 and the transverse trusses 4 that cross each other longitudinally and transversely are both made of thin-walled pipe fittings, and the wall thickness of the thin-walled pipe fittings is 3-6 mm.

[0042] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described in detail here.

Claims

1. A porous beam-truss roof structure system for a passenger station under a high-speed railway bridge, characterized by: The invention comprises a porous beam, a longitudinal truss, a transverse truss and a support system, wherein the porous beam has a hole through which pipeline equipment can pass and is erected between two laterally adjacent piers, the longitudinal truss is connected to the porous beam, the transverse truss is connected to the longitudinal truss and the two intersect; the longitudinal truss and the transverse truss are both double-layer truss structures, both of which include an upper chord as the main purlin of the passenger station building roof and a lower chord as the main keel of the passenger station building ceiling; the support system is placed on the main purlin of the roof A double-layer horizontal support system of purlin layers and main ceiling keel layers is arranged around the roof structure and on both sides of the porous beam; connecting plug plates are respectively provided on the upper and lower sides of the porous beam; the upper chord of the longitudinal truss is connected flush with the upper flange of the porous beam via the connecting plug plate located above, and the lower chord is connected flush with the lower flange of the porous beam via the connecting plug plate located below; corbels are provided on the piers, and both ends of the porous beam are respectively supported on the corbels provided on two adjacent piers and bolted to fix.

2. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 1, characterized in that: Vertical and / or oblique tie rods are respectively arranged between the upper chord and the lower chord of the longitudinal truss and between the upper chord and the lower chord of the transverse truss.

3. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 1 is characterized in that: The upper chord of the transverse truss is arranged between the upper chord nodes of the two adjacent longitudinal trusses, and the lower chord of the transverse truss is arranged between the lower chord nodes of the two adjacent longitudinal trusses to form a transverse hollow plane truss.

4. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 3 is characterized in that: The horizontal spacing between adjacent transverse trusses is 3-5m.

5. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 1 is characterized in that: The connection nodes between the transverse trusses and the longitudinal trusses are connected in the form of plug-in plates or directly connected flush.

6. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 1 is characterized in that: There is roof installation space and bridge bottom inspection space left between the porous beam and the high-speed railway bridge after completion.

7. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 1 is characterized in that: The support system is connected to the flanges of the porous beams or the chords of the longitudinal trusses and the transverse trusses respectively through insert plates.

8. The porous beam-truss roof structure system for a passenger station under a high-speed railway bridge according to claim 7, characterized in that: The support system is a cross-bracing structural system composed only of tensioned round steel or steel strands.

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