CN211872412U - Bridge deck and track combined structure of steel truss girder bridge - Google Patents
Bridge deck and track combined structure of steel truss girder bridge Download PDFInfo
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- CN211872412U CN211872412U CN201922131273.0U CN201922131273U CN211872412U CN 211872412 U CN211872412 U CN 211872412U CN 201922131273 U CN201922131273 U CN 201922131273U CN 211872412 U CN211872412 U CN 211872412U
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Abstract
The embodiment of the application provides a bridge floor and track integrated configuration of steel truss girder bridge, includes: bridge floor, main truss and track structure. The bridge deck is arranged on the main truss; the track structure comprises two walking rails which are arranged in parallel at intervals and a plurality of walking rail fastener systems connected with the bridge deck; the walking rail fastener system comprises an insulation fastening gauge block, a fastening piece and an insulation base plate; and a part of the structure of the insulating base plate is padded at the bottom of the corresponding walking rail, the insulating buckling gauge block is connected with the rail bottom of the corresponding walking rail, and the buckling and pressing piece is abutted against the insulating buckling gauge block and the insulating base plate so as to fix the walking rail. The bridge floor and the track integrated configuration of steel truss girder bridge of this application embodiment can alleviate the whole weight of track structure, reduce track structure's whole height when guaranteeing driving safety, when reducing the second phase dead load of steel truss girder bridge, has also reduced the design degree of difficulty and the cost of steel truss girder bridge.
Description
Technical Field
The application relates to the technical field of railway bridges, in particular to a bridge deck and track combined structure of a steel truss girder bridge.
Background
The steel truss structure is a main structure type commonly adopted by modern railway bridges, has the outstanding advantages of simple structure, convenient construction, strong bearing capacity and the like, and is widely applied to construction of ordinary speed railways, high-speed railways and intercity railways. At present, rail structures commonly used for steel truss girder bridges at home and abroad comprise a wooden sleeper open-bridge deck rail structure, a ballast rail structure, a synthetic resin sleeper rail structure and a plate type rail structure.
Among various types of track structures, the plate-type track structure can improve the stability and the durability of the track structure, reduce the maintenance workload and reduce the upper building height of the track. However, the slab track structure requires the prefabricated sleeper blocks and the concrete cushion to be laid on the bridge deck of the steel truss bridge, so that the second-stage constant load of the steel truss bridge is increased by more concrete, and the design difficulty and the construction cost of the steel truss bridge are further increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application is directed to a bridge deck and track combined structure of a steel truss bridge, so as to reduce the second-stage dead load of the steel truss bridge while ensuring the driving safety.
In order to achieve the above object, an embodiment of the present application provides a bridge deck and track composite structure of a steel truss bridge, including:
a bridge deck;
the bridge deck is arranged on the main truss;
the track structure comprises two walking rails arranged in parallel at intervals and a plurality of walking rail fastener systems connected with the bridge deck; the walking rail fastener system comprises an insulation fastening gauge block, a fastening piece and an insulation base plate; and a part of the structure of the insulating base plate is padded at the bottom of the corresponding walking rail, the insulating buckling and pressing gauge block is connected with the rail bottom of the corresponding walking rail, and the buckling and pressing piece is abutted against the insulating buckling and pressing gauge block and the insulating base plate so as to fix the walking rail.
Further, the insulating base plate comprises a bottom plate and a positioning block arranged on the bottom plate; a part of structure of the side wall of the positioning block, which is close to one side of the walking rail, protrudes outwards so as to form a step surface deviating from the bottom plate on the positioning block; and a part of the structure of the bottom plate is padded at the bottom of the corresponding walking rail, and the buckling and pressing piece is abutted against the step surface.
Furthermore, the walking rail fastener system further comprises a rail lower-height adjusting base plate, and the rail lower-height adjusting base plate is clamped between the rail bottom of the walking rail and the insulating base plate.
Furthermore, the walking rail fastener system also comprises a rubber base plate, and the rubber base plate is clamped between the rail lower elevation base plate and the walking rail.
Furthermore, the walking rail fastener system further comprises an insulating base plate lower-adjustment base plate, and the insulating base plate lower-adjustment base plate is clamped between the bridge deck and the insulating base plate.
Further, the bridge deck comprises two main longitudinal beams which are arranged on the main truss at intervals along the transverse direction of the running rails; the walking rails are in one-to-one correspondence with the main longitudinal beams, each walking rail is arranged on one corresponding main longitudinal beam, and the walking rail fastener system is connected with the main longitudinal beams.
Furthermore, the track structure also comprises two guard rails and a plurality of guard rail fastener systems which are arranged between the two walking rails at intervals;
and a plurality of the guard rail fastener systems are connected with the bridge deck to fix the two guard rails.
Further, the bridge deck further comprises two guard rail supporting structures which are arranged between the two main longitudinal beams at intervals along the transverse direction of the running rails;
the guardrail with guardrail bearing structure one-to-one, each guardrail setting is in one of correspondence on the guardrail bearing structure, guardrail fastener system with guardrail bearing structure connects.
Further, the guard rail support structure comprises an auxiliary longitudinal beam and a plurality of support legs connected with the auxiliary longitudinal beam; the bridge deck and track combined structure of the steel truss bridge further comprises a plurality of crossed steel truss supporting blocks;
the guard rail supporting structure is connected with the main truss through a plurality of supporting legs;
the crossed steel truss supporting block is arranged on the main truss and is positioned on one side, close to the main truss, of the auxiliary longitudinal beam to support the auxiliary longitudinal beam.
Furthermore, the walking rail fastener systems corresponding to the walking rails on the same side of the bridge deck and the guard rail fastener systems corresponding to the guard rails are arranged in a staggered mode along the longitudinal direction of the bridge deck.
The bridge floor and the track integrated configuration of steel truss girder bridge of this application embodiment are through going the direct and bridge floor of capable rail fastener system and being connected to will withhold the casting die and withhold gauge block and insulating backing plate butt with insulating, can guarantee driving safety the time, alleviate track structure whole weight greatly, reduce track structure's whole height, when reducing the second phase dead load of steel truss girder bridge, also reduced the design degree of difficulty and the construction cost of steel truss girder bridge.
Drawings
Fig. 1 is a schematic structural view of a bridge deck and rail combination structure of a steel truss bridge according to an embodiment of the present application, in which a guard rail fastener system is omitted and only one running rail fastener system is shown on one running rail;
FIG. 2 is an exploded view of the deck and track combination of the steel truss bridge of FIG. 1 with the running rail fastener system omitted;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is an exploded view of the running rail fastener system of FIG. 1;
FIG. 5 is a schematic structural view of the guard rail support structure shown in FIG. 2;
fig. 6 is a schematic structural view of the cross steel truss support block shown in fig. 2.
Description of the reference numerals
A track structure 10; a running rail 11; rail foot 11 a; a running rail fastener system 12; the gauge block 121 is pressed in an insulating way; a crimp 122; an insulating pad 123; a bottom plate 1231; a positioning block 1232; a step surface 1232 a; rail lower elevated backing plate 124; a rubber pad 125; an insulating pad lower heightening pad 126; a guard rail 13; a main girder 20; a bridge deck 30; a main side member 31; a running rail fastener preformed hole 31 a; a guard rail support structure 32; the sub-stringers 321; guard rail reserved fastener holes 321 a; support legs 322; cross steel truss support blocks 40.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the description of the present application, the terms of "lateral," "longitudinal" orientation or positional relationship are based on the orientation or positional relationship shown in fig. 1, it being understood that these terms of orientation are merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present application.
The bridge deck and track combined structure of the steel truss girder bridge is mainly suitable for passenger-cargo trains with the speed per hour of 120km/h and below.
An embodiment of the present application provides a bridge deck and track combined structure of a steel truss bridge, please refer to fig. 1 to 3, the bridge deck and track combined structure of the steel truss bridge includes: deck 30, main truss 20 and track structure 10. The deck 30 is provided on the main girder 20. The track structure 10 comprises two running rails 11 arranged in parallel spaced apart relationship and a plurality of running rail fastener systems 12 connected to the deck 30. The running rail fastener system 12 includes an insulated crimping gauge block 121, a crimp 122 and an insulated backing plate 123. A part of the insulating pad plate 123 is padded at the bottom of the corresponding running rail 11, the insulating buckling gauge block 121 is connected with the rail bottom 11a of the corresponding running rail 11, and the buckling and pressing member 122 is abutted against the insulating buckling gauge block 121 and the insulating pad plate 123 to fix the running rail 11.
Specifically, the bridge deck 30 of the present embodiment is provided with corresponding running rail fastener preformed holes 31a, and the running rail fastener system 12 is directly connected to the bridge deck 30, and more specifically, the insulating pad 123 is matched with two corresponding running rail fastener preformed holes 31a on the bridge deck 30 through two bolts to be fixed on the bridge deck 30, so that sufficient transverse resistance can be provided for the running rails 11, and the stability and safety of the line in the transverse direction can be ensured. The fastening member 122 is screwed with a corresponding running rail fastener preformed hole 31a on the bridge deck 30 through a T-shaped bolt, so that the fastening member 122 can be pressed against the insulation fastening gauge block 121 and the insulation backing plate 123. Different models can be selected for use as required by the insulation buckling gauge block 121, and the buckling parts 122 can also adjust the transverse distance of the two walking rails 11 in the transverse direction by matching with the insulation buckling gauge block 121 of different models so as to meet the design requirement.
In the related art, the track structure is usually provided with components such as a ballast bed, an adjusting layer or a sleeper, and the components have large weight and need to be arranged at a certain height, so that the whole weight of the track structure is large, the structure height is high, and the design difficulty and the construction cost of the steel truss bridge are increased while the second-stage dead load of the steel truss bridge is increased.
The track structure 10 of the embodiment cancels components such as a track bed, an adjusting layer and a sleeper for installing a traveling rail, the traveling rail fastener system 12 is directly connected with the bridge deck 30, meanwhile, in order to prevent the current generated in the running process of the train from being conducted to the main truss 20 through the traveling rail 11 to cause danger, the traditional iron base plate in the traveling rail fastener system is changed into the insulating base plate 123, therefore, the whole weight of the track structure 10 is greatly reduced and the whole height of the track structure 10 is reduced while the driving safety is ensured, and the design difficulty and the construction cost of the steel truss bridge are also reduced while the second-stage constant load of the steel truss bridge is reduced. The insulating pad 123 of this embodiment is made of an insulating material and can meet the performance requirements of the running rail fastener system 12, for example, the insulating pad 123 may be a resin pad.
Referring to fig. 3 and 4, the insulating base plate 123 of the present embodiment includes a base plate 1231 and a positioning block 1232 disposed on the base plate 1231. A part of the structure of the side wall of the positioning block 1232 near the side of the running rail 11 protrudes outward to form a step surface 1232a on the positioning block 1232, which is away from the bottom plate 1231. A part of the bottom plate 1231 is padded at the bottom of the corresponding one of the running rails 11, and the pressing member 122 abuts against the step surface 1232 a.
Specifically, for the fastening system disposed on the sleeper, the portion of the iron tie plate abutted against the retaining member is usually a small-sized protrusion structure, and the insulating tie plate 123 of the present embodiment employs a positioning block 1232 with a relatively large size to abut against the retaining member 122, more specifically, one side of the retaining member 122 away from the insulating retaining rail gauge block 121 abuts against the step surface 1232a, and meanwhile, the side wall of the positioning block 1232 connected to the step surface 1232a and disposed facing the running rail 11 can also function as a limit stop for the retaining member 122, thereby enabling the retaining member 122 to be mounted more firmly.
Referring to fig. 3 and 4, the running rail fastener system 12 of the present embodiment further includes a lower rail raising pad 124, and the lower rail raising pad 124 is sandwiched between the rail bottom 11a of the running rail 11 and the insulating pad 123. Further, the track fastener system 12 further comprises an insulating pad lower heightening pad 126, and the insulating pad lower heightening pad 126 is sandwiched between the bridge deck 30 and the insulating pad 123. By using the rail height-adjusting pad 124 and the insulating pad height-adjusting pad 126 with different thicknesses and numbers, the height of the running rail 11 can be adjusted in the vertical direction of the running rail 11, and a certain elastic support is provided for the running rail 11. In addition, the running rail fastener system 12 of the present embodiment further includes a rubber pad 125, and the rubber pad 125 is sandwiched between the rail lower elevation pad 124 and the running rail 11 to play a role of shock absorption.
Referring to fig. 1 and 2, the bridge deck 30 of the present embodiment includes two main stringers 31, and the two main stringers 31 are disposed on the main truss 20 at intervals along the transverse direction of the running rail 11. The walking rails 11 correspond to the main longitudinal beams 31 one by one, each walking rail 11 is arranged on one corresponding main longitudinal beam 31, and the walking rail fastener system 12 is connected with the main longitudinal beams 31.
The rail structure 10 is concentrated on the main longitudinal beams 31, so that the rail structure 10 can be prevented from being installed between the two main longitudinal beams 31, main components in the rail structure 10 and other structures on the steel truss girder bridge can be clearly seen, the intuitiveness and operability of overhauling and monitoring are improved, and timely and effective overhauling of a work department is facilitated.
Referring to fig. 1 and 2, the track structure 10 of the present embodiment further includes two guard rails 13 spaced between the two running rails 11, and a plurality of guard rail fastener systems (not shown) connected to the deck 30. A plurality of guard rail fastener systems are connected to the deck 30 to secure two guard rails 13.
Specifically, the guard rail 13 of the present embodiment is also actually directly fixed to the deck 30 by the guard rail fastening system without providing a bed, an adjustment layer, a sleeper, and the like for mounting the guard rail, thereby enabling the overall weight of the track structure 10 to be further reduced. It is understood that in other embodiments, corresponding ballast beds, adjustment layers, sleepers, etc. can also be provided for the guide rail 13.
Further, the related specifications stipulate that the distance between the running rails and the guard rails on the open-deck steel truss girder bridge is only 220mm, the distance between the running rails and the guard rails is short, if the running rail fastener system and the guard rail fastener system are arranged side by side in the transverse direction, the installation conflict is easy to cause, therefore, the present embodiment arranges the running rail fastener systems 12 corresponding to the running rails 11 on the same side of the bridge deck 30 and the guard rail fastener systems corresponding to the guard rails 13 in a staggered manner along the longitudinal direction of the bridge deck 30, therefore, the installation conflict caused by arranging the walking rail fastener system 12 and the guard rail fastener system side by side in the transverse direction can be avoided, the distance between the walking rail 11 and the guard rail 13 can meet the requirement, the running rail fastener system 12 and the guard rail fastener system are not limited by the size of the installation space, and more models of the running rail fastener system 12 can be selected by the operator.
Referring to fig. 2 and 5, the deck 30 of the present embodiment further includes two guard rail support structures 32 disposed between the two main stringers 31 at intervals along the transverse direction of the running rails 11. The guard rails 13 are in one-to-one correspondence with the guard rail support structures 32, each guard rail 13 is arranged on a corresponding guard rail support structure 32, and the guard rail fastener system is connected with the guard rail support structures 32.
Specifically, the guard rail support structure 32 of the present embodiment includes an auxiliary longitudinal beam 321 and a plurality of support legs 322 connected to the auxiliary longitudinal beam 321, and a reinforcing rib may be disposed between adjacent support legs 322 for connection, and the support legs 322 of the present embodiment are angle steels welded on the main truss 20. The height of the guard rail support structure 32 should ensure that the secondary longitudinal beam 321 is flush with the primary longitudinal beam 31 to enable the guard rail 13 to be laid normally. The auxiliary longitudinal beam 321 is provided with guard rail reserved fastener holes 321a for installing guard rail fastener systems, and the installation positions of the guard rail reserved fastener holes 321a need to ensure that the distance between the installed guard rail 11 and the running rail 13 can meet the design requirements, and more specifically, referring to fig. 1, in this embodiment, the running rail fastener reserved holes 31a corresponding to each running rail fastener system 12 located on the same side of the bridge deck 30 and the guard rail reserved fastener holes 321a corresponding to each guard rail fastener system are arranged in a longitudinally staggered manner along the bridge deck 30, so as to ensure that the installed running rail fastener systems 12 and the guard rail fastener systems can be arranged in a longitudinally staggered manner along the bridge deck 30.
Further, referring to fig. 2 and 6, in order to provide better support for the guard rail support structure 32 and prevent the secondary longitudinal beam 321 from deforming, the deck and track combination structure of the steel truss bridge of the embodiment further includes a plurality of cross steel truss support blocks 40. The cross steel truss support blocks 40 are disposed on the main truss 20 and on one side of the secondary stringers 321 adjacent to the main truss 20 to support the secondary stringers 321.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a bridge floor and track integrated configuration of steel truss girder bridge which characterized in that includes:
a bridge deck;
the bridge deck is arranged on the main truss;
the track structure comprises two walking rails arranged in parallel at intervals and a plurality of walking rail fastener systems connected with the bridge deck; the walking rail fastener system comprises an insulation fastening gauge block, a fastening piece and an insulation base plate; and a part of the structure of the insulating base plate is padded at the bottom of the corresponding walking rail, the insulating buckling and pressing gauge block is connected with the rail bottom of the corresponding walking rail, and the buckling and pressing piece is abutted against the insulating buckling and pressing gauge block and the insulating base plate so as to fix the walking rail.
2. The deck and track combination structure of a steel truss bridge as claimed in claim 1, wherein the insulating base plate includes a base plate and a positioning block provided on the base plate; a part of structure of the side wall of the positioning block, which is close to one side of the walking rail, protrudes outwards so as to form a step surface deviating from the bottom plate on the positioning block;
and a part of the structure of the bottom plate is padded at the bottom of the corresponding walking rail, and the buckling and pressing piece is abutted against the step surface.
3. The deck and track combination of a steel truss bridge as defined in claim 1 or 2 wherein said running rail fastener system further comprises a rail lower elevation bolster plate sandwiched between the bottom of said running rail and said insulating bolster plate.
4. The deck and track combination of a steel truss bridge as defined in claim 3 wherein said running rail fastener system further includes rubber tie plates sandwiched between said rail lower elevation tie plates and said running rails.
5. The deck and track composite structure of a steel truss bridge as defined in claim 1 or 2 wherein said running rail fastener system further comprises an insulating pad plate lower elevation pad plate, said insulating pad plate lower elevation pad plate being sandwiched between said deck and said insulating pad plate.
6. A deck and track combination for a steel truss bridge as defined in claim 1 or 2 wherein said deck includes two main stringers disposed on said main trusses at a spacing laterally of said running rails; the walking rails are in one-to-one correspondence with the main longitudinal beams, each walking rail is arranged on one corresponding main longitudinal beam, and the walking rail fastener system is connected with the main longitudinal beams.
7. A deck and track combination for a steel truss bridge as defined in claim 6 wherein said track structure further includes two guard rails spaced between said two running rails and a plurality of guard rail fastener systems;
and a plurality of the guard rail fastener systems are connected with the bridge deck to fix the two guard rails.
8. A deck and track combination for a steel truss bridge as defined in claim 7 wherein said deck further includes two guard rail support structures disposed between two of said main stringers at spaced intervals laterally of said running rails;
the guardrail with guardrail bearing structure one-to-one, each guardrail setting is in one of correspondence on the guardrail bearing structure, guardrail fastener system with guardrail bearing structure connects.
9. The deck and track combination of a steel truss bridge as defined in claim 8 wherein said guard rail support structure includes a secondary stringer and a plurality of support legs connected to said secondary stringer; the bridge deck and track combined structure of the steel truss bridge further comprises a plurality of crossed steel truss supporting blocks;
the guard rail supporting structure is connected with the main truss through a plurality of supporting legs;
the crossed steel truss supporting block is arranged on the main truss and is positioned on one side, close to the main truss, of the auxiliary longitudinal beam to support the auxiliary longitudinal beam.
10. The deck and track combination of a steel truss bridge as defined in any one of claims 7-9 wherein said running rail fastener systems corresponding to said running rails located on the same side of said deck and said guard rail fastener systems corresponding to said guard rails are staggered in the longitudinal direction of said deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131273.0U CN211872412U (en) | 2019-12-03 | 2019-12-03 | Bridge deck and track combined structure of steel truss girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131273.0U CN211872412U (en) | 2019-12-03 | 2019-12-03 | Bridge deck and track combined structure of steel truss girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211872412U true CN211872412U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922131273.0U Active CN211872412U (en) | 2019-12-03 | 2019-12-03 | Bridge deck and track combined structure of steel truss girder bridge |
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| Country | Link |
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| CN (1) | CN211872412U (en) |
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