CN115787374A - Steel structure truss girder bridge with aerial track and manufacturing method thereof - Google Patents

Abstract

A steel structure truss girder bridge with an aerial track and a manufacturing method thereof relate to the field of bridge construction. The steel structure truss girder bridge with the aerial track comprises two track girders which are arranged in parallel, two track crossbeams, a plurality of track girder piers for supporting the track girders, a truss girder and a plurality of truss girder piers for supporting the truss girder, wherein two ends of the track crossbeams are respectively connected with the end parts of the two track girders, the truss girder comprises two arc-shaped upper chords, two arc-shaped lower chords, a plurality of upper flat connecting rods, two ends of which are respectively connected with the two upper chords, a plurality of lower flat connecting rods, two ends of which are respectively connected with the two lower chords, inclined web members, and truss crossbeams, two ends of which are respectively connected with the upper chords and the lower chords, and the top of the track girder is respectively connected with the bottoms of the truss crossbeams. The steel structure truss girder bridge with the aerial track and the manufacturing method thereof can provide the empty rail steel structure truss girder bridge with simple and reliable structure, short construction period and material saving.

Description

Steel structure truss girder bridge with aerial track and manufacturing method thereof

Technical Field

The application relates to the field of bridge construction, in particular to a steel structure truss girder bridge with an aerial track and a manufacturing method thereof.

Background

The air rail train is called an air rail for short, and the urban traffic problem is effectively relieved on the basis of not expanding the existing urban highway facilities by transferring the ground rail traffic system to the air operation. The truss girder bridge is a girder bridge using a truss as a main bearing structure, and has the advantages of simple and reliable structure, short construction period and material saving, so that the truss girder bridge has wide development prospect when being introduced into an air rail system.

At present, a bridge structure capable of well integrating an air rail system and a truss girder bridge and a construction method thereof do not exist.

Disclosure of Invention

The application aims to provide a steel structure truss girder bridge with an aerial track and a manufacturing method thereof, and the steel structure truss girder bridge with the aerial track can provide an aerial track steel structure truss girder bridge which is simple and reliable in structure, short in construction period and capable of saving materials.

The application is realized as follows:

the application provides a steel construction truss girder bridge with aerial track, it includes two parallel arrangement's track roof beam, two track crossbeams, a plurality of track roof beam piers that are used for supporting the track roof beam, truss roof beam and a plurality of truss girder piers that are used for supporting the truss roof beam, track crossbeam's both ends respectively with the end connection of two track roof beams, truss roof beam includes two curved upper chord members, two curved lower chord members, a plurality of both ends respectively with the upper tie rod that two upper chord members are connected, a plurality of both ends respectively with the lower tie rod that two lower chord members are connected, a plurality of both ends respectively with upper chord member and lower chord member be connected's diagonal web member and a plurality of both ends respectively with two upper chord member be connected's truss crossbeam, the top of track roof beam is connected bottom with each truss crossbeam respectively.

In some optional embodiments, each of the upper chord and the lower chord is formed by sequentially connecting a plurality of chord sections, each chord section comprises a chord unit and a chord node unit which are sequentially connected, one side of each chord node unit is used for connecting an inclined web member, and the other side of each chord node unit is used for connecting an upper flat link or a lower flat link; the chord member unit comprises an arc-shaped outer web plate, an arc-shaped inner web plate, a chord member top plate and a chord member bottom plate, wherein two ends of the chord member top plate and two ends of the chord member bottom plate are respectively connected with the outer web plate and the inner web plate; the chord member node unit comprises an arc chord member outer side node plate, an arc chord member inner side node plate, a node top plate and a node bottom plate, wherein two ends of the node top plate and two ends of the node bottom plate are respectively connected with the chord member outer side node plate and the chord member inner side node plate; a plurality of chord separators which are arranged at intervals are also arranged in the chord sections.

In some alternative embodiments, the upper and lower flat link rods are X-shaped and each consist of a main flat link rod provided with a flat link joint plate at the middle and two sub flat link rods connected to the flat link joint plate.

In some alternative embodiments, the diagonal web members are Y-shaped or X-shaped and are comprised of a web member node and three or four web member connections.

In some optional embodiments, the track beam comprises a top plate, two webs with the tops connected with the top plate, and two bottom plates respectively connected with the bottoms of the two webs, and the tops of the top plate and the truss beams are connected through lifting lug connecting plates.

The application provides a manufacturing method of the steel structure truss girder bridge with the aerial rail, which comprises the following steps:

respectively manufacturing a track beam, a track cross beam, a track beam pier, a truss beam and a truss beam pier, and then splicing and welding;

the truss girder is divided into an upper chord member, a lower chord member, an upper horizontal link rod, a lower horizontal link rod, a diagonal web member and a truss beam which are respectively manufactured and then assembled;

the upper chord and the lower chord are divided into a plurality of chord sections for manufacturing and then assembling, each chord section is divided into a chord unit and a chord node unit for manufacturing and then assembling, one side of each chord node unit is used for connecting an inclined web member, and the other side of each chord node unit is used for connecting an upper horizontal connecting rod or a lower horizontal connecting rod;

the upper horizontal connecting rod and the lower horizontal connecting rod are divided into a horizontal connecting main rod and two horizontal connecting auxiliary rods connected to the horizontal connecting joint plate, and the horizontal connecting main rod and the two horizontal connecting auxiliary rods are assembled after being manufactured;

the diagonal web members are divided into web member nodes and three or four web member bars for assembly after manufacture.

In some alternative embodiments, the chord member segment is manufactured by the steps of:

obtaining parts through numerical control blanking, and profiling the parts to obtain outer webs, inner webs, chord top plates, chord bottom plates, chord stiffening plates, chord outer side node plates, chord inner side node plates, chord partition plates and node stiffening plates;

welding the outer web plate and the chord outer side gusset plate, welding the inner web plate and the chord inner side gusset plate, and welding the chord stiffening plate to the outer web plate and the inner web plate;

the node stiffening plates are welded on the chord member outer side node plates, the chord member inner side node plates are used as jig surfaces, the chord member partition plates, the node stiffening plates, the chord member top plates and the chord member bottom plates are positioned and installed and then welded, and then the chord member outer side node plates and the outer side web plates are pushed to be flush with the chord member inner side node plates and the inner side web plates and then welded with the chord member top plates and the chord member bottom plates.

In some alternative embodiments, the post-manufacturing assembly of the truss girder into the upper chord member, the lower chord member, the upper horizontal link member, the lower horizontal link member, the diagonal web member and the truss girder comprises the following steps:

manufacturing a jig frame by taking the plane of the diagonal web member as a jig frame surface and marking out a positioning line;

sequentially arranging the upper chord member, the lower chord member and the diagonal web members on the jig frame according to the positioning lines and then performing positioning welding to obtain a truss side structure;

and respectively transporting the two truss side structures to a construction site, and then positioning and welding the upper jig frame, the upper flat connecting rod, the lower flat connecting rod and the truss cross beam.

In some optional embodiments, when assembling and welding are performed after manufacturing the track beam, the track beam pier, the truss beam and the truss beam pier, two lug connection plates are respectively welded at the bottom of the truss beam, and then the top of the track beam is welded and fixed to the corresponding lug connection plates.

The beneficial effect of this application is: the application provides a steel construction truss girder bridge with aerial track includes two parallel arrangement's track roof beam, two track crossbeams, a plurality of track roof beam piers that are used for supporting the track roof beam, truss roof beam and a plurality of truss girder piers that are used for supporting the truss roof beam, track crossbeam's both ends respectively with the end connection of two track roof beams, truss roof beam includes two curved upper chord members, two curved lower chord members, a plurality of both ends respectively with the upper tie rod that two upper chord members are connected, a plurality of both ends respectively with the lower tie rod that two lower chord members are connected, a plurality of both ends respectively with the diagonal web member that upper chord member and lower chord member are connected and a plurality of both ends respectively with the truss crossbeam that two upper chord members are connected, the top of track roof beam is connected bottom each truss crossbeam respectively. The steel structure truss girder bridge with the aerial track and the manufacturing method thereof can provide the steel structure truss girder bridge for the aerial track system, which has the advantages of simple and reliable structure, short construction period and material saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a first perspective structural schematic view of a steel structure truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 2 is a structural schematic diagram of a second perspective view of a steel structure truss girder bridge with an aerial rail according to an embodiment of the present application;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural diagram of a truss girder in a steel structure truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 5 is a schematic cross-sectional structural view of a chord unit of an upper chord in a steel truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a flat link joint plate and two flat link sub-rods connected with an upper flat link rod and an upper flat link rod in a steel structure truss girder bridge with an aerial rail provided by an embodiment of the application;

fig. 7 is a schematic structural view of a web member joint of a diagonal web member and connection of two web members in a steel truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 8 is a schematic structural diagram illustrating an outer web manufactured in the method for manufacturing a steel truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a chord member outer side gusset plate manufactured in the method for manufacturing a steel structure truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 10 is a schematic structural view illustrating the aligned welding of the outer webs and the chord member outer gusset plates in the method for manufacturing the steel-structure truss girder bridge with the aerial rail according to the embodiment of the present application;

fig. 11 is a schematic structural diagram of a chord stiffening plate and a node stiffening plate welded to an outer web and an inner wall of a chord outer node plate in a method for manufacturing a steel structure truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a chord stiffening plate, a node stiffening plate, a chord top plate, a chord bottom plate, a node top plate, a node bottom plate, a chord partition plate, and a node connecting plate welded to inner side webs and inner side node plates of chords in the method for manufacturing a steel structure truss girder bridge with an aerial rail according to the embodiment of the present application;

fig. 13 is a schematic structural diagram of a chord unit and a chord node unit that are connected by positioning and welding the outer web and the chord outer node plate to the inner web and the chord inner node plate in the manufacturing method of the steel-structure truss girder bridge with the aerial rail according to the embodiment of the present application;

fig. 14 is a schematic structural view of upper chords and lower chords obtained by assembling chord segments in the method for manufacturing a steel structure truss girder bridge with an aerial rail according to an embodiment of the present application;

fig. 15 is a schematic structural view illustrating that, in the method for manufacturing a steel-structured truss girder bridge with an aerial rail according to the embodiment of the present application, two ends of a web member node of a diagonal web member are respectively connected to an upper chord member and a lower chord member after being assembled with two web member members;

fig. 16 is a schematic structural view illustrating a web member node of a diagonal web member and a third or fourth web member are connected to an upper chord member and a lower chord member after being assembled together in the method for manufacturing a steel-structured truss girder bridge having an aerial rail according to the embodiment of the present invention;

fig. 17 is a schematic structural view illustrating a web member joint having web members connected to both ends thereof respectively when the third and fourth web members are spliced in the method for manufacturing a steel-structured truss girder bridge having an aerial rail according to the embodiment of the present application;

fig. 18 is a schematic structural view of a web member joint, the two ends of which are respectively connected with web members, and a third and a fourth web members which are spliced and welded in the method for manufacturing a steel structure truss girder bridge with an aerial rail according to the embodiment of the present application.

In the figure: 100. a track beam; 110. a rail beam; 120. a rail beam pier; 130. a top plate; 140. a web; 150. a base plate; 200. a truss beam; 210. a truss girder pier; 220. an upper chord; 221. an outboard web; 222. an inner web; 223. a chord top plate; 224. a chord bottom plate; 225. a chord stiffening plate; 226. chord member outer gusset plates; 227. chord member inner side gusset plates; 228. a chord separator; 229. a node stiffener; 230. a lower chord; 231. a node connecting plate; 232. a node top plate; 233. a node backplane; 240. an upper flat link; 241. a main parallel rod; 242. a flat joint plate; 243. a parallel-connection auxiliary rod; 250. a lower horizontal link rod; 260. a diagonal web member; 261. a web member node; 262. a web member; 270. a truss beam; 280. lug connecting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the application is conventionally placed in use, and are used only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The characteristics and properties of the steel structure truss girder bridge with aerial rail and the method for manufacturing the same according to the present application will be described in further detail with reference to examples.

As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the present application provides a steel structure truss girder bridge with an aerial rail, which includes two rail girders 100 arranged in parallel, two rail girders 110, four rail girder piers 120 for supporting the rail girders 100, a truss girder 200, and four truss girder piers 210 for supporting the truss girder 200, wherein both ends of each rail girder 110 are respectively connected to the ends of the two rail girders 100, and the bottoms of both ends of each rail girder 100 are respectively connected to one rail girder pier 120; the truss girder 200 includes two arc-shaped upper chords 220, two arc-shaped lower chords 230, twelve X-shaped upper horizontal links 240 each having two ends connected to the two upper chords 220, ten X-shaped lower horizontal links 250 each having two ends connected to the two lower chords 230, twenty-four diagonal web members 260 each having two ends connected to the upper chords 220 and the lower chords 230, and five truss girders 270 each having two ends connected to the two upper chords 220, the top of the track girder 100 is connected to the bottom of each truss girder 270, and the bottom of each lower chord 230 is connected to one lower truss girder pier 210.

The upper chord 220 is formed by sequentially connecting twenty-four chord sections, the lower chord 230 is formed by sequentially connecting twenty chord sections, each chord section comprises a chord unit and a chord node unit which are sequentially connected, one side of each chord node unit of the upper chord 220 and the lower chord 230 is used for connecting the diagonal web member 260, and the other side of each chord node plate of the upper chord 220 and the lower chord 230 is respectively used for connecting the upper flat link 240 and the lower flat link 250; the chord unit comprises an arc-shaped outer web 221, an arc-shaped inner web 222 and a chord top plate 223 and a chord bottom plate 224, wherein two ends of the chord top plate 223 and the chord bottom plate 224 are respectively connected with the top and the bottom of the outer web 221 and the inner web 222; the chord member node unit comprises an arc-shaped chord member outer side node plate 226, an arc-shaped chord member inner side node plate 227 and a chord member partition plate 228, two ends of the chord member partition plate 228 are respectively connected with the chord member outer side node plate 226 and the chord member inner side node plate 227, the chord member outer side node plate 226 and the chord member inner side node plate 227 are respectively connected with four node stiffening plates 229, nine node connecting plates 231 respectively connected with the chord member outer side node plate 226 and the chord member inner side node plate 227 are further arranged in the chord member node unit, and two ends of the chord member outer side node plate 226 and the chord member inner side node plate 227 are respectively connected with a node top plate 232 and a node bottom plate 233.

The upper horizontal link 240 and the lower horizontal link 250 are X-shaped, and the upper horizontal link 240 and the lower horizontal link 250 are composed of a main horizontal link rod 241 having a top end and a bottom end at the middle thereof respectively provided with an X-shaped horizontal link node plate 242, and two auxiliary horizontal link rods 243 connected to both sides of the horizontal link node plate 242.

Twenty-four diagonal web members 260 include four Y-shaped diagonal web members 260 formed by connecting X-shaped web member nodes 261 and three web member members 262, and twenty X-shaped diagonal web members 260 formed by connecting X-shaped web member nodes 261 and four web member members 262, and truss side structures are formed by connecting two Y-shaped diagonal web members 260 and ten X-shaped diagonal web members 260 located between two Y-shaped diagonal web members 260 between each upper chord 220 and the corresponding lower chord 230 respectively.

The track beam 100 comprises a top plate 130, two webs 140 with the tops connected with the top plate 130, and two bottom plates 150 respectively connected with the bottoms of the two webs 140, wherein the tops of the top plate 130 are connected with a truss beam 270 through a lifting lug connecting plate 280.

As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 and 18, the present application provides a method for manufacturing the steel structure truss girder bridge having an aerial rail, which includes the steps of:

respectively manufacturing a track beam 100, a track cross beam 110, a track beam pier 120, a truss beam 200 and a truss beam pier 210;

wherein, the truss girder 200 is divided into an upper chord member 220, a lower chord member 230, an upper horizontal link rod 240, a lower horizontal link rod 250, a diagonal web member 260 and a truss girder 270 which are respectively manufactured and then assembled;

the upper chord 220 and the lower chord 230 are divided into chord sections which are connected in sequence for assembly after manufacture, and each chord section is divided into a chord unit and a chord node unit for assembly after manufacture; the upper horizontal link 240 and the lower horizontal link 250 are divided into a horizontal link main rod 241 and two horizontal link auxiliary rods 243 connected to the horizontal link joint plate 242, and are assembled after being manufactured; the diagonal web member 260 is divided into a web member node 261 and three or four web member members 262 for post-manufacturing assembly.

The chord member segment is manufactured by the following steps:

obtaining a part through numerical control blanking, drawing a corresponding vertical positioning line, a web member center line and a parallel center line on the part, profiling 1/4 circular arcs of the part to obtain an outer web plate 221, an inner web plate 222, a chord member outer side node plate 226 and a chord member inner side node plate 227, and detecting the circular arc completion degree by using an inspection sample plate in the profiling process; processing the parts to obtain a chord top plate 223, a chord bottom plate 224, a chord stiffening plate 225, a chord partition plate 228 and a node stiffening plate 229;

the arc inner sides of the outer side web plate 221 and the chord member outer side node plate 226 are aligned, the arc outer sides of the inner side web plate 222 and the chord member inner side node plate 227 are aligned, welding is carried out according to the requirements of welding process procedures, and constraint is carried out in the welding process to avoid large side bending in the welding process. Carrying out nondestructive testing on the welding seam, checking the straightness of the jointed parts, and carrying out the next step if the welding seam is corrected to be qualified by the flame in case of out-of-tolerance; welding chord stiffener plates 225 to outboard webs 221 and inboard webs 222;

the node stiffening plates 229 are welded to the chord outer side node plates 226, the arc inner sides of the chord inner side node plates 227 are used as a jig surface, the chord partition plates 228, the node connecting plates 231, the node stiffening plates 229, the chord top plates 223 and the chord bottom plates 224 are positioned and installed to guarantee perpendicularity and welding, and then the chord outer side node plates 226 and the outer side webs 221 are pushed along the length direction to be flush with the chord inner side node plates 227 and the inner side webs 222 and then welded with the chord top plates 223 and the chord bottom plates 224.

When the manufactured track beam 100, track beam 110, track beam pier 120, truss beam 200 and truss beam pier 210 are assembled:

manufacturing a jig frame by taking the plane of the diagonal web member 260 as a jig frame surface and marking out a positioning line;

sequentially arranging the upper chord member 220, the lower chord member 230 and the diagonal web member 260 on one side of the truss girder 200 on a jig frame according to the positioning line, and then positioning and welding to obtain a truss side structure; specifically, the method comprises the following steps: firstly, assembling chord sections to obtain an upper chord 220 and a lower chord 230, then sequentially assembling two ends of a web node 261 of each inclined web member 260 with two web members 262 respectively and then connecting the two ends with chord node units of the upper chord 220 and the lower chord 230, finally respectively assembling one side of the middle part of the inclined web member 260 positioned at the two ends with the chord node unit of the upper chord 220 through one web member 262, respectively assembling two sides of the middle part of the inclined web member 260 positioned in the middle with the chord node units of the upper chord 220 and the lower chord 230 through two web members 262, and finally welding all parts;

after the two truss side structures are transported to the construction site, the upper jig frame is positioned and welded with the upper flat link 240, the lower flat link 250, and the truss beam 270, respectively.

Two lug connection plates 280 are welded to the bottoms of the truss beams 270, respectively, and then the tops of the rail beams 100 are welded to the corresponding lug connection plates 280.

The steel structure truss girder bridge with aerial track that this application embodiment provided can guarantee that track roof beam 100 stable support carriage removes through adopting truss girder 200 to connect and stable support track roof beam 100 to shorten construction cycle and material saving through the simple and reliable structure of truss girder 200, thereby reduce construction cost. According to the manufacturing method of the steel structure truss girder bridge with the aerial track, provided by the embodiment of the application, the track girder 100, the track beam 110, the track girder pier 120, the truss girder 200 and the truss girder pier 210 are manufactured respectively, the upper chord member 220 and the lower chord member 230 of the truss girder 200 are divided into the chord member sections which are connected in sequence to be manufactured and then assembled, each chord member section is divided into the chord member unit and the chord member node unit to be assembled after being manufactured, the segmented seams of the chord member sections can be kept away from the positions of the node plates by using the chord member units, so that the influence of field welding on the quality of the node plates is avoided, the welding of the chord member units and the chord member node units is completely finished in a factory, the welding quality of the node plates is ensured, the adjustment is convenient when the manufacturing problem occurs, meanwhile, the upper chord member 220 and the lower chord member 230 are firstly spliced during the assembling, the diagonal web members 260 are positioned and welded after being framed to obtain the truss side structure, the position of the diagonal web members 260 can be well positioned, the positioning accuracy is improved, and the construction difficulty is reduced.

In addition, in the manufacturing of the upper chord 220 and the lower chord 230, a three-edge welding method is adopted to replace the traditional four-edge welding means, the arc inner sides of the chord inner side node plates 227 are positioned as jig surfaces, the chord partition plates 228, the chord top plates 223 and the chord bottom plates 224 are installed, and then the chord outer side node plates 226 are positioned and installed finally, so that the process flow can be greatly optimized, the manufacturing time is shortened, the manufacturing precision is improved, and the continuity of the node stiffening plates 229 is ensured to promote stress conduction and structural strength. Through dividing oblique web member 260 into web member node 261 and the Y shape or the X-shaped structure that three or four web member members 262 are constituteed, can be when being connected oblique web member 260 with upper chord 220, lower chord 230, only need aim at the both ends cross-section of web member node 261 at every turn and can aim at the other both ends of web member node 261 to reduce the adjustment degree of difficulty on the spot and improve final adjustment precision, and guarantee that oblique web member 260 carries out accurate location with upper chord 220, lower chord 230.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (9)

1. The utility model provides a steel construction truss girder bridge with aerial track, its characterized in that, it includes two parallel arrangement's track roof beam, two track crossbeams, a plurality of support that is used for track roof beam pier, truss girder and a plurality of support that are used for of track roof beam the truss girder pier of truss girder, the both ends of track crossbeam respectively with two the end connection of track roof beam, the truss girder include two curved upper chord members, two curved lower chord members, a plurality of both ends respectively with two last tie rod, a plurality of both ends that the upper chord member is connected respectively with two lower tie rod, a plurality of both ends that the lower chord member is connected respectively with the upper chord member with diagonal web member and a plurality of both ends that the lower chord member is connected respectively with two the truss crossbeam that the upper chord member is connected, the top of track roof beam respectively with each truss crossbeam bottom is connected.

2. The steel structure truss girder bridge with aerial rails as claimed in claim 1, wherein the upper chord member and the lower chord member are composed of a plurality of chord member segments which are sequentially connected, each chord member segment comprises a chord member unit and a chord member node unit which are sequentially connected, one side of each chord member node unit is used for connecting the diagonal web members, and the other side of each chord member node unit is used for connecting the upper horizontal link member or the lower horizontal link member; the chord member unit comprises an arc-shaped outer web plate, an arc-shaped inner web plate, a chord member top plate and a chord member bottom plate, wherein two ends of the chord member top plate and two ends of the chord member bottom plate are respectively connected with the outer web plate and the inner web plate; the chord member node unit comprises an arc-shaped chord member outer side node plate, an arc-shaped chord member inner side node plate, a node top plate and a node bottom plate, wherein two ends of the node top plate and two ends of the node bottom plate are respectively connected with the chord member outer side node plate and the chord member inner side node plate; and a plurality of chord separators which are arranged at intervals are also arranged in the chord sections.

3. The steel-structure truss girder bridge with aerial rails as claimed in claim 1, wherein the upper and lower flat link rods are X-shaped and are each composed of a main flat link rod having a flat link joint plate at a middle portion thereof and two sub flat link rods connected to the flat link joint plate.

4. The steel structure truss girder bridge with aerial rail of claim 1, wherein the diagonal web members are Y-shaped or X-shaped and are composed of web member nodes and three or four web member members connected.

5. The steel structure truss girder bridge with aerial rails of claim 1, wherein the rail girder comprises a top plate, two webs with tops connected to the top plate, and two bottom plates respectively connected to bottoms of the two webs, and the tops of the top plate are connected to the truss girders through lifting lug connection plates.

6. The method for manufacturing a steel structure truss girder bridge with an aerial rail of claim 1, wherein it comprises the steps of:

respectively manufacturing a track beam, a track beam cross beam, a track beam pier, a truss beam and a truss beam pier, and then splicing and welding;

the truss girder is divided into an upper chord member, a lower chord member, an upper horizontal link rod, a lower horizontal link rod, a diagonal web member and a truss crossbeam which are respectively manufactured and then assembled;

the upper chord and the lower chord are divided into a plurality of chord sections for manufacturing and then assembling, each chord section is divided into a chord unit and a chord node unit for manufacturing and then assembling, one side of each chord node unit is used for connecting the inclined web member, and the other side of each chord node unit is used for connecting the upper flat connecting rod or the lower flat connecting rod;

the upper horizontal link rod and the lower horizontal link rod are divided into a horizontal link main rod and two horizontal link auxiliary rods connected to the horizontal link joint plates, and the two horizontal link auxiliary rods are assembled after being manufactured;

the oblique web members are divided into web member nodes and three or four web member bars for assembly after manufacture.

7. The method of manufacturing a steel structural truss beam bridge with aerial rails as claimed in claim 6 wherein the chord section is manufactured including the steps of:

obtaining parts through numerical control blanking, and profiling the parts to obtain outer webs, inner webs, chord top plates, chord bottom plates, chord stiffening plates, chord outer side node plates, chord inner side node plates, chord partition plates and node stiffening plates;

welding the outer side web plate and the chord outer side gusset plate, welding the inner side web plate and the chord inner side gusset plate, and welding the chord stiffening plate to the outer side web plate and the inner side web plate;

and welding the node stiffening plates to the chord member outer side node plates, positioning and installing the chord member partition plates, the node stiffening plates, the chord member top plate and the chord member bottom plate by taking the chord member inner side node plates as a jig surface, and then pushing the chord member outer side node plates and the outer side web plates to be parallel and level with the chord member inner side node plates and the inner side web plates and then welding the chord member top plate and the chord member bottom plate.

8. The method of claim 6, wherein the truss girder divided into upper chords, lower chords, upper tie rods, lower tie rods, diagonal web members and truss girders, which are assembled after being manufactured, comprises the steps of:

manufacturing a jig frame by taking the plane of the diagonal web member as a jig frame surface and marking out a positioning line;

sequentially arranging the upper chord member, the lower chord member and the diagonal web members on a jig frame according to the positioning lines and then performing positioning welding to obtain a truss side structure;

and respectively transporting the two truss side structures to a construction site, and then positioning and welding the upper jig frame, the upper flat connecting rod, the lower flat connecting rod and the truss cross beam.

9. The method of manufacturing a steel-structured truss girder bridge with an aerial rail according to claim 6, wherein when assembling and welding are performed after manufacturing the rail girder, the rail beam, the rail girder bridge pier, the truss girder, and the truss girder bridge pier, two lug connection plates are welded to the bottom of the truss girder, respectively, and then the top of the rail girder is welded and fixed to the corresponding lug connection plates.

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