A ribbon arch-shaped empty rail long-span bridge and a manufacturing method thereof

Abstract

The utility model provides a ribbon arch shape empty rail long -span bridge and manufacturing method thereof relates to bridge field. Ribbon arch shape empty rail long -span bridge includes two track beams, two end cross beams, a plurality of middle cross beams, at least two ribbon shape web members arranged from top to bottom and main arch, the both ends of end cross beam are connected with one end of two track beams respectively, the both ends of middle cross beam are connected with the side of two track beams respectively, the both ends of main arch are connected with two end cross beams respectively, the both ends of each ribbon shape web member are connected and are connected to main arch, the upward arching of the ribbon shape web member in the uppermost is connected with main arch respectively, the downward arching of the ribbon shape web member in the lowermost is connected with each middle cross beam respectively, the both ends top of the upward arching of the ribbon shape web member in the lower side is connected with the both ends bottom of the upward arching of the ribbon shape web member in the upper side respectively. Ribbon arch shape empty rail long -span bridge and manufacturing method thereof provide ribbon arch shape empty rail long -span bridge and manufacturing method for the running line of suspension type empty rail.

Description

Technical Field

[0001] This application relates to the field of bridges, and more specifically, to a ribbon-arched skyrail long-span bridge and its manufacturing method. Background Technology

[0002] With the continuous advancement of urbanization in China, rapid rail transit, as an important component of the modern public transportation system, plays a vital role in urban economic development. Suspended monorail systems are a new type of monorail system where trains run suspended from a single track beam. The track beam not only serves as the load-bearing structure for the vehicles but also guides and stabilizes their operation.

[0003] Suspended monorail urban rail transit mainly operates within urban areas, inevitably requiring crossings of existing transportation lines and underground pipelines. The track beams for these crossing sections must be designed as large-span monorail bridges. These large-span monorail bridges must simultaneously meet the dual requirements of monorail train track operation and supporting the bridge spanning the lines; currently, there is no domestic experience in manufacturing such structures. Summary of the Invention

[0004] The purpose of this application is to provide a ribbon-arched monorail long-span bridge and its manufacturing method to meet the usage requirements of ribbon-arched monorail long-span bridges for suspended monorail operation lines.

[0005] This application is implemented as follows:

[0006] This application provides a ribbon-shaped skyrail bridge, which includes two parallel track beams, two end crossbeams, multiple middle crossbeams, at least two ribbon-shaped web members arranged from top to bottom, and a main arch. The two ends of the end crossbeams are respectively connected to one end of the two track beams, the two ends of the middle crossbeams are respectively connected to the sides of the two track beams, and the two ends of the main arch are respectively connected to the two end crossbeams. The two ends of each ribbon-shaped web member are interconnected and connected to the main arch. The upward arch of the uppermost ribbon-shaped web member is connected to the main arch, the downward arch of the lowermost ribbon-shaped web member is connected to each of the middle crossbeams, and the tops of the upward arches of the lower ribbon-shaped web members are respectively connected to the bottoms of the upward arches of the upper ribbon-shaped web members.

[0007] In some alternative implementations, the track beam is composed of multiple track beam units connected in sequence. Each track beam unit includes a top plate, two web plates whose tops are respectively connected to the bottom sides of the top plate, two bottom plates whose tops are respectively connected to the bottoms of the two web plates, a middle cover plate whose ends are respectively connected to the two web plates, and multiple partition plates. The sidewalls of the partition plates are respectively connected to the top plate, the two web plates, and the middle cover plate. Multiple web plate reinforcements are connected between each web plate, the top plate, and the corresponding bottom plate. A running opening is formed between the two bottom plates.

[0008] In some alternative implementations, the base plate is connected to at least one longitudinal stiffener extending along its length and multiple transverse stiffeners connected to each longitudinal stiffener.

[0009] This application also provides a method for manufacturing a ribbon-shaped arched sky bridge spanning a long distance, comprising the following steps:

[0010] The track beam is divided into multiple sequentially connected track beam units and manufactured separately. The main arch is divided into multiple sequentially connected arch body sections and two arch foot sections and manufactured separately. The ribbon-shaped web members are divided into single web member sections, multi-web member sections, upper web member nodes connected to the main arch, and lower web member nodes connected to the middle crossbeam and manufactured separately. The end crossbeams and the middle crossbeam are manufactured separately.

[0011] The track unit, arch section, arch foot section, single-web section, multi-web section, upper web node, lower web node, end crossbeam and middle crossbeam are pre-assembled and positioned on the jig.

[0012] In some alternative implementations, the track beam is manufactured in multiple sequentially connected track beam units, each comprising the following steps:

[0013] The top plate, web plate, bottom plate, and middle cover plate of the track beam are cut into sheet metal.

[0014] The sheet metal is spliced ​​and fixed on the fixed jig, and splicing plates are installed at the weld joints;

[0015] Perform unit component machining of top plate, web plate, bottom plate, middle cover plate and partition plate, and mark longitudinal baseline, transverse baseline, auxiliary baseline and assembly line respectively during machining;

[0016] The track beam unit is manufactured using a general assembly jig. The base plate is fixed to the general assembly jig and connected with tooling partitions. After aligning with the longitudinal and transverse baselines, it is fixed. The inner contour positioning lines of the web are marked on the base plate. The process partitions are assembled and installed on the base plate. Then, the web on one side is hoisted and aligned with the assembly line on the corresponding base plate. The process partitions are then tightened and fixed. The middle cover plate is hoisted and aligned with the transverse baseline and then attached to the web. The partitions are fixed to the middle cover plate. The web on the other side is hoisted and aligned with the assembly line and transverse baseline on the corresponding base plate. It is then fixed to the corresponding base plate and middle cover plate. The top plate is hoisted and aligned with the longitudinal and transverse baselines.

[0017] The track beam unit is obtained by sequentially welding the welds of the partition plate, middle cover plate, web plate, bottom plate and top plate;

[0018] Each track beam unit is pre-assembled.

[0019] In some alternative implementations, the top plate, web plate, bottom plate, and middle cover plate are extended by 30-50 mm along the bridge length direction; the two sides of the middle cover plate are extended by 2-4 mm along the bridge width direction; and the three sides connecting the diaphragm to the web plate and the middle cover plate are extended by 5-8 mm as machining allowance.

[0020] In some alternative implementations, when manufacturing the end beam, the top plate of the end beam is placed upside down on the jig as a manufacturing reference, and a line is drawn on the inside of the top plate of the end beam as a positioning reference. The internal partition and reinforcing ribs of the end beam are assembled with the line drawn on the inside of the top plate of the end beam as a reference. Then, the bottom plate of the end beam is installed to obtain the end beam segment. After the end beam segment is turned to the right side, it is welded to the two track beam units. End sealing plates are welded on both sides of the end beam segment.

[0021] In some alternative implementations, a jig is erected to manufacture the central crossbeam during the pre-assembly of each track unit, and the two ends of the central crossbeam are pre-assembled with the two track beam units.

[0022] In some alternative implementations, the main arch is manufactured by dividing it into multiple sequentially connected arch body segments and two arch foot segments, including the following steps:

[0023] When manufacturing the arch foot section, a bottom reference plane is selected, and the arch foot section is positioned and marked on the bottom reference plane. Then, a base plate frame is erected and the arch foot bottom plate, the inner web plate of the arch foot, the arch foot partition, the outer web plate of the arch foot, and the arch foot top plate are installed in sequence to manufacture the arch foot section.

[0024] The arch section manufacturing is divided into end node arch section, middle node arch section and general arch section; when manufacturing the arch section, it is laid flat along the side of the arch web, and a frame is erected on the surface of the arch web. It is assembled in the order of arch web, arch diaphragm, arch top plate, arch bottom plate and the other side of the arch web; the arch top plate of the end node arch section and the middle node arch section are reserved with the ribbon web rod interface.

[0025] In some alternative implementations, the ribbon-shaped web members are manufactured in the following steps: (The steps are as follows: single web member segments, multi-web member segments, upper web member nodes connected to the main arch, and lower web member nodes connected to the central crossbeam.)

[0026] The nodes on the web members include the end nodes and the middle nodes of the web members. The end nodes and the middle nodes of the web members are manufactured separately and then pre-assembled as a whole with the ribbon web member interfaces of the end node arch section and the middle node arch section.

[0027] Both single-web and multi-web bar segments are manufactured by assembling a jig on one side of the web and then assembling it in a horizontal position; the two ends of the single-web bar segment are lengthened by 20-40mm respectively.

[0028] After the single-web member segment, multi-web member segment, upper web member node and lower web member node are manufactured, they are pre-assembled as a whole. During the pre-assembly, the main arch is laid down to one side, and the ribbon-shaped web members and the middle crossbeam are spliced ​​in sequence with the two arch foot segments as the boundary references at both ends.

[0029] The beneficial effects of this application are as follows: The ribbon-arched skyrail bridge provided in this application includes two parallel track beams, two end crossbeams, multiple middle crossbeams, at least two ribbon-shaped web members arranged sequentially from top to bottom, and a main arch. The two ends of the end crossbeams are connected to one end of each of the two track beams, the two ends of the middle crossbeams are connected to the sides of each of the two track beams, and the two ends of the main arch are connected to the two end crossbeams. The two ends of each ribbon-shaped web member are interconnected and connected to the main arch. The upward arch of the uppermost ribbon-shaped web member is connected to the main arch, the downward arch of the lowermost ribbon-shaped web member is connected to each of the middle crossbeams, and the tops of the upward arches of the lower ribbon-shaped web members are connected to the bottoms of the upward arches of the upper ribbon-shaped web members. This application provides a structurally stable and reliable ribbon-arched skyrail bridge for suspended skyrail operation lines and its high-precision manufacturing method. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A first-view structural schematic diagram of the ribbon-arched sky track bridge provided in an embodiment of this application;

[0032] Figure 2 A structural schematic diagram of the ribbon-arched sky track bridge provided in an embodiment of this application from a second perspective;

[0033] Figure 3 A cross-sectional view of the track beam of the ribbon-arched sky track long-span bridge provided in an embodiment of this application;

[0034] Figure 4 A cross-sectional view of the connection between the track beam and the end crossbeam of the ribbon-arched sky bridge provided in this embodiment of the application;

[0035] Figure 5 A cross-sectional view of the connection between the track beam and the central crossbeam of the ribbon-shaped sky track bridge provided in this embodiment of the application;

[0036] Figure 6A partial structural schematic diagram of the ribbon-shaped arched sky track bridge provided in an embodiment of this application;

[0037] Figure 7 A partial structural schematic diagram of the connection between the arch foot section and the end crossbeam of the ribbon-shaped sky track bridge provided in the embodiments of this application;

[0038] Figure 8 The manufacturing method of the ribbon-shaped sky track bridge provided in this application embodiment is a structural diagram showing the main arch divided into arch body section and arch foot section, and the ribbon-shaped web members divided into single web member section, multi-web member section, web member upper node and web member lower node.

[0039] Figure 9 A schematic diagram of splicing and fixing plates in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0040] Figure 10 This is a schematic diagram of the structure of installing the base plate on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0041] Figure 11 A schematic diagram of the structure of installing process partitions on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0042] Figure 12 A schematic diagram of the structure of installing one side web plate on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon arched sky track long-span bridge provided in the embodiments of this application;

[0043] Figure 13 A schematic diagram of the structure of installing the middle cover plate on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon arched sky track long-span bridge provided in the embodiments of this application;

[0044] Figure 14 A schematic diagram of the structure of installing partitions on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0045] Figure 15 A schematic diagram of the structure of installing the other side web plate on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon arched sky track long-span bridge provided in the embodiments of this application;

[0046] Figure 16 This is a schematic diagram of the structure of installing the top plate on the jig when manufacturing the track beam unit in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0047] Figure 17A schematic diagram illustrating the assembly of the end beam partition and the end beam bottom plate using the top plate of the end beam as a reference in the manufacturing method of the ribbon-shaped sky rail long-span bridge provided in this application embodiment;

[0048] Figure 18 A schematic diagram of the end crossbeam segments and track beam units manufactured in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0049] Figure 19 A schematic diagram showing the welding of end sealing plates on both sides of the end crossbeam segment in the manufacturing method of the ribbon-shaped sky rail long-span bridge provided in the embodiments of this application;

[0050] Figure 20 This is a schematic diagram of the manufacturing method of the ribbon-shaped sky track bridge provided in the embodiments of this application, in which each track beam unit is manufactured with the middle crossbeam as a reference based on the two end crossbeams and then assembled.

[0051] Figure 21 A schematic diagram of the structure for manufacturing the arch foot section in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0052] Figure 22 A schematic diagram of the structure of the arch section of the manufacturing end node in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0053] Figure 23 A schematic diagram of the structure for manufacturing the central node arch section in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0054] Figure 24 This is a schematic diagram of the structure for splicing the lower node of the web member and the middle crossbeam in the manufacturing method of the ribbon-shaped sky track long-span bridge provided in the embodiments of this application;

[0055] Figure 25 This is a schematic diagram of the pre-assembly of the single-web member segment, multi-web member segment, upper node of web member and lower node of web member with the main arch and the central crossbeam in the manufacturing method of the ribbon-shaped sky track bridge provided in the embodiments of this application.

[0056] In the diagram: 100, track beam; 101, top plate; 102, web plate; 103, bottom plate; 104, middle cover plate; 105, diaphragm; 106, web plate reinforcement; 107, running opening; 108, bottom plate longitudinal reinforcement; 109, bottom plate transverse reinforcement; 110, end beam; 111, end beam top plate; 112, end beam diaphragm; 113, end beam bottom plate; 11 4. End caps; 120. Middle crossbeam; 121. Middle crossbeam joint; 130. Ribbon-shaped web members; 131. Single web member segment; 132. Multi-web member segment; 133. Upper node of web member; 134. Lower node of web member; 140. Main arch; 141. Arch body segment; 142. Arch foot segment; 150. Plate; 160. Splicing plate; 170. Tooling partition; 180. Process partition. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0063] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] The following detailed description of the features and performance of the ribbon-shaped skyrail bridge and its manufacturing method of this application, in conjunction with embodiments, provides further insight into their respective characteristics and performance.

[0065] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, this application provides a ribbon-shaped arched skyrail bridge, which includes two parallel track beams 100, two end crossbeams 110, four central crossbeams 120, two ribbon-shaped web members 130 arranged from top to bottom, and a main arch 140. The two ends of the end crossbeams 110 are respectively connected to one end of the two track beams 100, the two ends of the central crossbeams 120 are respectively connected to the sides of the two track beams 100, and the two ends of the main arch 140 are respectively connected to the two end crossbeams 110. Each ribbon-shaped web member 130 is equipped with... The three upward arches and four downward arches are connected at both ends of the two ribbon-shaped web members 130 and connected to the lower ends of the main arch 140. The three upward arches of the upper ribbon-shaped web members 130 are connected to the main arch 140 respectively. The four downward arches of the lower ribbon-shaped web members 130 are connected to the top of the four middle crossbeams 120 respectively. The tops of the three upward arches of the lower ribbon-shaped web members 130 are connected to the bottoms of the three upward arches of the upper ribbon-shaped web members 130 respectively.

[0066] Each track beam 100 consists of four track beam units connected sequentially to form a semi-open box-shaped structure at the bottom. Each track beam unit includes a top plate 101, two web plates 102 whose tops are connected to the bottom sides of the top plate 101, two bottom plates 103 whose tops are connected to the bottoms of the two web plates 102, a middle cover plate 104 connected to the two web plates 102 at both ends, and twenty partition plates 105 spaced apart along the length of the track beam unit. The sidewalls of the partition plates 105 are connected to the top plate 101 and the two web plates 102, respectively. The track beam 100 is connected to the central cover plate 104. Twenty web reinforcements 106, spaced apart along the length of the track beam unit, connect each web plate 102, top plate 101, and corresponding bottom plate 103. A running opening 107 is formed between two bottom plates 103. Each bottom plate 103 is connected to a longitudinal bottom plate reinforcement 108 extending along its length and twenty transverse bottom plate reinforcements 109 connected to each longitudinal bottom plate reinforcement 108. The twenty transverse bottom plate reinforcements 109 are spaced apart along the length of the track beam unit. The upper part of the central cover plate 104 of the track beam 100 is a closed box chamber, the lower part of the central cover plate 104 is a semi-open box chamber, and the top surface of the bottom plate 103 is the train track surface.

[0067] like Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 23 , Figure 24 , Figure 25 As shown, this application also provides a method for manufacturing the above-mentioned ribbon-shaped arched sky bridge, including the following steps:

[0068] The track beam 100 is manufactured separately as four sequentially connected track beam units; the main arch 140 is manufactured separately as four sequentially connected arch body sections 141 and two arch foot sections 142; the ribbon-shaped web members 130 are manufactured separately as single web member sections 131, multi-web member sections 132, upper web member nodes 133 connected to the main arch 140, and lower web member nodes 134 connected to the middle crossbeam 120; the end crossbeams 110 and the middle crossbeam 120 are manufactured separately.

[0069] The manufacturing of the track beam 100 includes the following steps: CNC cutting of the top plate 101, web plate 102, bottom plate 103, and middle cover plate 104 of the track beam to obtain plate material; extending the top plate 101, web plate 102, bottom plate 103, and middle cover plate 104 along the bridge length direction by 30-50mm as secondary cutting allowance for subsequent pre-assembly to compensate for shrinkage during subsequent welding construction; extending both sides of the middle cover plate 104 along the bridge width direction by 2-4mm as machining allowance, so that the middle cover plate 104 can fit more tightly with the web plate 102 after machining and milling to ensure the spacing between the box girder and the track beam; extending the three sides of the partition plate 105 connected to the web plate 102 and the middle cover plate 104 by 5-8mm as machining allowance, so that the partition plate 105 fits more tightly with the web plate 102 and the middle cover plate 104 to ensure the spacing between the box girder and the track beam.

[0070] On the fixed jig, the plates 150 of the top plate 101, web plate 102, bottom plate 103 and middle cover plate 104 are spliced ​​and fixed, and clamped on both sides. Splicing plates 160 are installed at the welding joints. The length of the splicing plates 160 is more than 400mm, and the spacing between the splicing plates 160 is 300mm. After splicing, the weld is ground smooth.

[0071] The unit components of top plate 101, web plate 102, bottom plate 103, middle cover plate 104, and partition plate 105 are machined. During the machining of the middle cover plate 104, longitudinal baselines, transverse baselines, auxiliary baselines, and assembly lines are drawn. For the bottom plate 103, to ensure line accuracy, it is cut as a whole. Longitudinal baselines, transverse baselines, longitudinal rib position lines, and process partition plate position lines are drawn. Curved sections of the bottom plate 103 are marked using laser CNC scribing. Based on these scribing lines, the longitudinal stiffeners 108 and transverse stiffeners 109 of the bottom plate are assembled. For the web plate 102, after blanking, the upper and lower edges are milled, and a beveling machine is used to create bevels. Longitudinal baselines, transverse baselines, auxiliary baselines, stiffening plate position lines, and middle cover plate position lines are drawn on the scribing platform. The web plate vertical ribs are assembled according to the baselines. A 350-400mm delay weld is reserved at the upper end of the web plate vertical ribs to prevent deformation of the web plate due to asymmetrical welding.

[0072] The track beam unit is manufactured using a general assembly jig. The base plate 103 is fixed to the jig and connected using tooling partitions 170. The spacing between the base plates 103 is determined based on the centerline (235mm in this embodiment). The inner contour positioning lines of the web plate 102 are drawn on the base plate 103. The contact edges between the tooling partitions and the base plate 103 are machined, aligned with the longitudinal and transverse baselines, and then fixed. The inner contour positioning lines of the web plate 102 are drawn on the base plate 103. Using the centerline as a reference, the process partitions 180 are assembled and installed on the base plate 103 (in this embodiment, the process partitions 180 with a width of 839mm are installed based on the centerline). The verticality is adjusted. Weld the process partition 180 to the fixed position. Then, hoist the web plate 102 on one side and align it with the assembly line on the corresponding bottom plate 103. After tightening the process partition 180, spot weld it to the bottom plate 103. After adjusting the verticality, tighten the side fixture. Hoist the middle cover plate 104 and align it with the horizontal baseline. Then, attach it to the web plate 102 and spot weld it to the fixed position. Fix the partition 105 to the middle cover plate 104 and spot weld it to the fixed position. Hoist the web plate 102 on the other side and align it with the assembly line and horizontal baseline on the corresponding bottom plate 103. After adjusting the verticality and attaching it tightly to the process partition, spot weld the web plate 102 to the corresponding bottom plate 103 and middle cover plate 104. After applying paint to the inside of the box according to the painting requirements, hoist the top plate 101 and align it with the longitudinal and transverse baselines.

[0073] The track beam unit is obtained by welding the diaphragm 105, middle cover plate 104, web plate 102, bottom plate 103, and top plate 101 in sequence. The welding sequence is as follows: three-sided welds of diaphragm 105; upper fillet weld between middle cover plate 104 and web plate 102; first weld between web stiffener 106 and bottom plate 103 and top plate 101; weld between web plate 102 and bottom plate 103; lower fillet weld between middle cover plate 104 and web plate 102; second weld between web stiffener 106 and bottom plate 103 and top plate 101; weld between web plate 102 and top plate 101.

[0074] When manufacturing the end crossbeam 110, the top plate 111 of the end crossbeam is placed upside down on the jig as a manufacturing reference. A line is drawn on the inner side of the top plate 111 of the end crossbeam as a positioning reference. The end crossbeam partition 112 and reinforcing ribs are assembled with the line drawn on the inner side of the top plate 111 of the end crossbeam as a reference. Then, the bottom plate 113 of the end crossbeam is installed to obtain the end crossbeam segment. After the end crossbeam segment is turned to the right side, it is welded to the two track beam units through the process holes opened on the bottom plate 113 of the end crossbeam. The end sealing plates 114 are welded on both sides of the end crossbeam segment respectively.

[0075] Each track beam unit is pre-assembled. The entire bridge is pre-assembled using the two end crossbeams 110 as a reference. During pre-assembly, the central crossbeam 120 is manufactured using the pre-assembled frame. The two ends of each central crossbeam 120 are pre-assembled with the two track beam units through the central crossbeam joint 121. The overall length of the entire bridge is pre-assembled when the overall bridge is pre-assembled, including the allowance for cutting between segments. The circumferential cutting is carried out after the overall manufacturing is completed.

[0076] The main arch 140 and the ribbon-shaped web members 130 are manufactured separately during the fabrication of the ribbon-shaped large-span arch system.

[0077] The main arch 140 is manufactured by dividing it into four arch body sections 141 and two arch foot sections 142:

[0078] Among them, when manufacturing the two arch foot sections 142, the bottom reference plane is selected, the arch foot section 142 is positioned and marked on the bottom reference plane, and then the base plate frame is erected and the arch foot bottom plate, the inner web plate of the arch foot, the arch foot partition, the outer web plate of the arch foot, and the arch foot top plate are installed in sequence to manufacture the arch foot section 142.

[0079] The manufacturing of the four arch sections 141 is divided into two end node arch sections, three middle node arch sections, and four general arch sections. When manufacturing the arch section 141, it is laid flat along the side of the arch web, and a frame is erected on the surface of the arch web. It is assembled in the order of arch web, arch diaphragm, arch top plate, arch bottom plate, and the other side arch web. The end node arch sections and the middle node arch sections are manufactured according to the manufacturing method of arch section 141, and the ribbon web bar interface is reserved at the bottom.

[0080] The ribbon-shaped web member 130 is manufactured separately as a single web member segment 131, a multi-web member segment 132, an upper web member node 133 connected to the main arch 140, and a lower web member node 134 connected to the central crossbeam 120. The upper web member node 133 includes a web member end node and a web member middle node. The web member end node and the web member middle node are manufactured separately and then pre-assembled with the pre-reserved ribbon web member interfaces on the end node arch section and the middle node arch section. When manufacturing the single web member segment 131 and the multi-web member segment 132, a jig is erected on one side of the web member web plate and then manufactured in a horizontal assembly position. The two ends of the single web member segment 131 are lengthened by 20-40mm respectively.

[0081] After the single-web member segment 131, multi-web member segment 132, upper web member node 133, and lower web member node 134 are manufactured, they are pre-assembled as a whole. During the pre-assembly, the main arch 140 is assembled and laid down to one side in the direction of increasing mileage. Then, with the two arch foot segments 142 as the two end boundary references, the single-web member segment 131, multi-web member segment 132, upper web member node 133, lower web member node 134, and four central crossbeams 120 of the ribbon-shaped web member 130 are spliced ​​in sequence.

[0082] The track beam unit, arch section 141, arch foot section 142, single web member section 131, multi-web member section 132, upper web member node 133, lower web member node 134, end crossbeam 110 and middle crossbeam 120 are pre-assembled and positioned on the jig.

[0083] The ribbon-shaped skyrail bridge and its manufacturing method provided in this application embodiment are manufactured and assembled separately by dividing the overall structure of the ribbon-shaped skyrail bridge into a lower track beam 100 for train operation and an upper ribbon-shaped skyrail arch system. Specifically, after manufacturing the track beam 100 into multiple track beam units, two end crossbeams 110 are used as references for pre-assembly. A middle crossbeam 120 is also manufactured for pre-assembly and positioning. The main arch 140 and ribbon-shaped web members 130 of the ribbon-shaped skyrail arch are divided into multiple arch body segments 141, two arch foot segments 142, a single web member segment 131, a multi-web member segment 132, upper web member nodes 133, and lower web member nodes 134. 4. The main arch 140 is assembled and then laid down to one side in the direction of increasing mileage. Using the two arch foot segments 142 as the boundary references at both ends, the single web segment 131, multi-web segment 132, upper web node 133, lower web node 134 and four central crossbeams 120 of the ribbon-shaped web members 130 are spliced ​​in sequence. In this way, the high-precision manufacturing of the track beam 100 is effectively achieved through reasonable parts processing methods and welding assembly processes. The pre-assembly and manufacturing of the ribbon-shaped large-span arch system is completed by using the method of multi-node manufacturing of the ribbon to ensure positioning and pre-assembly and correction of the other general segments, and effectively matching it with the track beam 100. This provides a ribbon-shaped arched sky rail bridge with stable and reliable structure and high manufacturing precision.

[0084] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A ribbon-shaped arched skyrail long-span bridge, characterized in that, It includes two parallel track beams, two end crossbeams, multiple middle crossbeams, at least two ribbon-shaped web members arranged sequentially from top to bottom, and a main arch. The two ends of the end crossbeams are respectively connected to one end of the two track beams. The two ends of the middle crossbeams are respectively connected to the sides of the two track beams. The two ends of the main arch are respectively connected to the two end crossbeams. The two ends of each ribbon-shaped web member are interconnected and connected to the main arch. The upward arch of the uppermost ribbon-shaped web member is connected to the main arch. The downward arch of the lowermost ribbon-shaped web member is connected to each of the middle crossbeams. The tops of the upward arches of the lower ribbon-shaped web members are respectively connected to the bottoms of the upward arches of the upper ribbon-shaped web members.

2. The ribbon-shaped arched sky track bridge according to claim 1, characterized in that, The track beam is composed of multiple track beam units connected in sequence. Each track beam unit includes a top plate, two web plates whose tops are respectively connected to the bottom sides of the top plate, two bottom plates whose tops are respectively connected to the bottoms of the two web plates, a middle cover plate whose two ends are respectively connected to the two web plates, and multiple partition plates. The side walls of the partition plates are respectively connected to the top plate, the two web plates, and the middle cover plate. Multiple web plate reinforcements are connected between each web plate, the top plate, and the corresponding bottom plate. A running opening is formed between two bottom plates.

3. The ribbon-shaped arched sky track bridge according to claim 2, characterized in that, The base plate is connected to at least one longitudinal stiffener extending along its length and multiple transverse stiffeners connected to each of the longitudinal stiffeners.

4. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 1, characterized in that, Includes the following steps: The track beam is divided into multiple sequentially connected track beam units and manufactured separately. The main arch is divided into multiple sequentially connected arch body sections and two arch foot sections and manufactured separately. The ribbon-shaped web members are divided into single web member sections, multi-web member sections, upper web member nodes connected to the main arch, and lower web member nodes connected to the middle crossbeam and manufactured separately. The end crossbeams and the middle crossbeam are manufactured separately. The track beam unit, the arch section, the arch foot section, the single-web member section, the multi-web member section, the upper node of the web member, the lower node of the web member, the end crossbeam, and the middle crossbeam are pre-assembled and positioned as a whole on the jig.

5. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 4, characterized in that, The track beam is divided into multiple sequentially connected track beam units, and each unit is manufactured using the following steps: The top plate, web plate, bottom plate, and middle cover plate of the track beam are cut into sheet metal. The sheet metal is spliced ​​and fixed on the fixed jig, and splicing plates are installed at the weld joints; Perform unit component machining of top plate, web plate, bottom plate, middle cover plate and partition plate, and mark longitudinal baseline, transverse baseline, auxiliary baseline and assembly line respectively during machining; The track beam unit is manufactured using a general assembly jig. The base plate is fixed to the general assembly jig and connected with tooling partitions. After aligning with the longitudinal and transverse baselines, it is fixed. The inner contour positioning lines of the web are marked on the base plate. Process partitions are assembled and installed on the base plate. Then, the web on one side is hoisted and aligned with the assembly line on the corresponding base plate. After tightening the process partition, it is fixed. The middle cover plate is hoisted, aligned with the transverse baseline, and then attached to and fixed to the web. The partition is fixed to the middle cover plate. The web on the other side is hoisted and aligned with the assembly line and transverse baseline on the corresponding base plate. It is then fixed to the corresponding base plate and middle cover plate. The top plate is hoisted and aligned with the longitudinal and transverse baselines. The track beam unit is obtained by sequentially welding the welds of the partition plate, the middle cover plate, the web plate, the bottom plate, and the top plate. Each of the aforementioned track beam units is pre-assembled.

6. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 5, characterized in that, The top plate, the web plate, the bottom plate, and the middle cover plate are each extended 30-50mm along the bridge length direction; the two sides of the middle cover plate are each extended 2-4mm along the bridge width direction; and the three sides of the partition plate connected to the web plate and the middle cover plate are extended 5-8mm as machining allowance.

7. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 5, characterized in that, When manufacturing the end crossbeam, the top plate of the end crossbeam is placed upside down on the jig as a manufacturing reference. A line is drawn on the inside of the top plate of the end crossbeam as a positioning reference. The internal partition and reinforcing ribs of the end crossbeam are assembled with the line drawn on the inside of the top plate of the end crossbeam as a reference. Then, the bottom plate of the end crossbeam is installed to obtain the end crossbeam segment. After the end crossbeam segment is turned to the right side, it is welded to the two track beam units. End sealing plates are welded on both sides of the end crossbeam segment.

8. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 5, characterized in that, During the pre-assembly of each track unit, a jig is erected to manufacture the central crossbeam, and the two ends of the central crossbeam are pre-assembled with the two track beam units.

9. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 4, characterized in that, The main arch is manufactured by dividing it into multiple sequentially connected arch body segments and two arch foot segments, including the following steps: When manufacturing the arch foot section, a bottom reference plane is selected, and the arch foot section is positioned and marked on the bottom reference plane. Then, a base plate frame is erected and the arch foot bottom plate, the inner web plate of the arch foot, the arch foot partition, the outer web plate of the arch foot, and the arch foot top plate are installed in sequence to manufacture the arch foot section. The arch section is manufactured in three ways: end node arch section, middle node arch section, and general arch section. During the manufacturing process, the arch section is laid flat along the side of the arch web, and a frame is erected on the surface of the arch web. The sections are then assembled in the following order: arch web, arch diaphragm, arch top plate, arch bottom plate, and the other side of the arch web. The top plates of the end node arch section and the middle node arch section have pre-reserved interfaces for the ribbon web members.

10. The manufacturing method of the ribbon-shaped arched sky bridge according to claim 9, characterized in that, The ribbon-shaped web member is divided into single-web member segments, multi-web member segments, upper nodes of the web member connected to the main arch, and lower nodes of the web member connected to the central crossbeam. The manufacturing of each of these components includes the following steps: The upper node of the web member includes the web member end node and the web member middle node. The web member end node and the web member middle node are manufactured separately and then pre-assembled as a whole with the ribbon web member interface of the end node arch section and the middle node arch section. Both the single-web rod segment and the multi-web rod segment are manufactured by erecting a jig on one side of the web plate and then manufacturing in a horizontal assembly posture; the two ends of the single-web rod segment are lengthened by 20-40mm respectively; After the single-web member segment, the multi-web member segment, the upper node of the web member and the lower node of the web member are manufactured, they are pre-assembled as a whole. During the pre-assembly, the main arch is laid down to one side, and the ribbon-shaped web members and the middle crossbeam are spliced ​​in sequence with the two arch foot segments as the two end boundary references.

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