CN216688977U - Dual-purpose cable-stayed bridge structure for double-deck public rail - Google Patents
Dual-purpose cable-stayed bridge structure for double-deck public rail Download PDFInfo
- Publication number
- CN216688977U CN216688977U CN202122722518.4U CN202122722518U CN216688977U CN 216688977 U CN216688977 U CN 216688977U CN 202122722518 U CN202122722518 U CN 202122722518U CN 216688977 U CN216688977 U CN 216688977U
- Authority
- CN
- China
- Prior art keywords
- cable
- deck
- bridge
- track
- highway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000001061 Forehead Anatomy 0.000 claims abstract description 4
- CWFOCCVIPCEQCK-UHFFFAOYSA-N Chlorfenapyr Chemical compound BrC1=C(C(F)(F)F)N(COCC)C(C=2C=CC(Cl)=CC=2)=C1C#N CWFOCCVIPCEQCK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000725 suspension Substances 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004301 light adaptation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Abstract
The utility model provides a dual-purpose cable-stayed bridge structure for a double-deck public rail, which comprises: a track deck; the highway bridge surface is positioned below the track bridge surface; the middle section of the cable tower is wider than the upper end section of the cable tower, and the cable towers are respectively and fixedly connected with the track bridge floor and the highway bridge floor; the first bearing beam is fixedly connected with the cable tower and is positioned below the track bridge floor; the second bearing beam is fixedly connected with the cable tower and is positioned below the forehead of the highway bridge floor; the first stay cable is used for connecting the cable tower and the track bridge floor; the supporting beams are arranged between the track bridge floor and the highway bridge floor, positioned at two ends of the width direction of the highway bridge floor and positioned between the adjacent cable towers; the second stay cable is used for connecting the support beam and the road deck. The interlude of cable tower is wider the upper end section of cable tower can be applicable to highway bridge floor and the track bridge floor and differ double-deck dual-purpose bridge more, can improve the stability of large-span cable-stay bridge structure through the setting up of a supporting beam and second suspension cable.
Description
Technical Field
The utility model relates to the technical field of cable-stayed bridges, in particular to a dual-purpose cable-stayed bridge structure for a double-deck highway and a rail.
Background
A cable-stayed bridge (also called diagonal bridge) is a bridge which directly pulls a main beam on a bridge tower by a plurality of guys, is a structural system mainly composed of a cable tower, a main beam and a stay cable, can be regarded as a multi-span elastic support continuous beam with guys replacing buttresses, can reduce bending moment in a beam body, reduce building height, lighten structural weight and save materials. At present, the span of the cable-stayed bridge is increasingly large, so the application is increasingly wide.
When the bridge span is larger than 300m, the bridge span is usually built with an urban road system, the width of an urban highway bridge deck is generally wider than that of a track bridge deck, but the existing width difference is not large, and the bridge span can be realized by a structural form of an inclined main girder or a widened lower-layer bridge deck. For a dual-purpose bridge with a wider road deck and a narrower track deck, the two structures are not easy to realize.
Therefore, there is a need to develop a cable-stayed bridge structure with dual-purpose double-deck and common-rail, which is suitable for a dual-deck dual-purpose bridge with a large difference between a road deck and a track deck, and improves the stability of the cable-stayed bridge structure with a large span.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the utility model provides a cable-stayed bridge structure with double-deck and common-rail functions.
In view of the above, the present invention provides a cable-stayed bridge structure for dual-purpose use as a public rail and a double-deck, comprising:
a track deck;
the road bridge deck is positioned below the track bridge deck and is wider than the track bridge deck;
the middle section of the cable tower is wider than the upper end section of the cable tower, and the cable towers are respectively and fixedly connected with the track bridge floor and the highway bridge floor;
the first bearing beam is fixedly connected with the cable tower and is positioned below the track bridge floor;
the second bearing beam is fixedly connected with the cable tower and is positioned below the forehead of the highway bridge floor;
the first stay cable is used for connecting the cable tower and the track bridge floor;
the supporting beams are arranged between the track bridge floor and the highway bridge floor, are positioned at two ends of the width direction of the highway bridge floor, and are positioned between the adjacent cable towers;
and the second stay cable is used for connecting the supporting beam and the road deck.
Further, the cable-stayed bridge structure further comprises:
the cross beam is arranged below the track bridge floor and is fixedly connected with the supporting beam.
Further, the cable-stayed bridge structure further comprises:
the auxiliary pier is arranged below the road bridge floor and is kept away from the cable tower and the supporting beam.
Furthermore, the included angle between the first stay cable and the track bridge surface is 20-55 degrees, and the included angle between the second stay cable and the road bridge surface is 20-55 degrees.
Furthermore, the included angle between the first stay cable and the track bridge surface is 35-45 degrees, and the included angle between the second stay cable and the road bridge surface is 35-45 degrees.
Further, the ratio of the side span on the track bridge deck to the main span is in the range of 0.2 to 0.25, wherein the side span is the distance between the outermost cable tower and the end of the cable-stayed bridge structure length, and the main span is the distance between the adjacent cable towers.
Further, the cable tower is an inverted Y-shaped, A-shaped or twin cable tower.
Further, the cable-stayed bridge structure further comprises guardrails, which are arranged on the two sides of the track bridge floor and the two sides of the width direction of the road bridge floor.
The technical scheme provided by the utility model can have the following beneficial effects:
the interlude of cable tower is wider the upper end section of cable tower can be applicable to highway bridge floor and the track bridge floor and differ double-deck dual-purpose bridge more, can improve the stability of large-span cable-stay bridge structure through the setting up of a supporting beam and second suspension cable.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 shows a front view of a dual deck highway rail cable-stayed bridge structure according to one embodiment of the utility model;
fig. 2 shows a side view of a cable-stayed bridge structure for dual-deck highway and railway according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
the bridge comprises a track bridge floor 1, a highway bridge floor 2, a cable tower 3, a first bearing beam 4, a second bearing beam 5, a first stay cable 6, a support beam 7, a second stay cable 8, a cross beam 9 and an auxiliary pier 10, wherein a main span is L1, and a side span is L2.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.
Examples
FIG. 1 shows a front view of a dual deck highway rail cable-stayed bridge structure according to one embodiment of the utility model; fig. 2 shows a side view of a cable-stayed bridge structure for dual-use as a double deck rail according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, the present embodiment provides a cable-stayed bridge structure for both public rail and double deck, which includes:
a track deck 1;
the highway bridge deck 2 is positioned below the track bridge deck 1, and the highway bridge deck 2 is wider than the track bridge deck 1;
the middle section of the cable tower 3 is wider than the upper end section of the cable tower 3, and the cable towers 3 are respectively and fixedly connected with the track bridge floor 1 and the highway bridge floor 2;
the first bearing beam 4 is fixedly connected with the cable tower 3, and the first bearing beam 4 is positioned below the track bridge floor 1;
the second bearing beam 5 is fixedly connected with the cable tower 3, and the second bearing beam 5 is positioned below the forehead of the highway bridge floor 2;
the first stay cable 6 is used for connecting the cable tower 3 and the track bridge floor 1;
the supporting beams 7 are arranged between the track bridge floor 1 and the highway bridge floor 2, the supporting beams 7 are positioned at two ends of the highway bridge floor 2 in the width direction, and the supporting beams 7 are positioned between the adjacent cable towers 3;
and the second stay cable 8 is used for connecting the support beam 7 and the road deck 2.
The middle section of the cable tower 3 is wider than the upper end section of the cable tower 3, so that the cable tower is suitable for a double-layer dual-purpose bridge with a large difference between a road bridge deck 2 and a track bridge deck 1, and the stability of a large-span cable-stayed bridge structure can be improved through the arrangement of the supporting beam 7 and the second stay cable 8.
Specifically, in this embodiment, the position where the road deck 2 is wider than the track deck 1 is a distance between two rows of lanes (a forward lane and a reverse lane), the track deck 1 and the road deck 2 are in an arc shape in the length direction, two ends of the track deck 1 and the road deck 2 in the length direction are partially overlapped, a vehicle enters the road deck 2 from the position where the road deck 2 is wider, and the rail vehicle directly enters the track deck 1 through the middle, so that the track and the road share one cable-stayed bridge.
It should be noted that the supporting beam 7 is located between the track bridge deck 1 and the road bridge deck 2, that is, the supporting beam 7 and the second stay cable 8 are located right below the track bridge deck 1 in the width direction, that is, on the lane dividing line of the road bridge deck 2, and the distance between two second stay cables 8 adjacent to the road bridge deck 2 is required to meet the requirement of vehicle lane change.
Further, the cable-stayed bridge structure further comprises:
and the cross beam 9 is arranged below the track bridge floor 1, and the cross beam 9 is fixedly connected with the support beam 7.
The cross beam 9 can play a role of supporting the track bridge deck 1 on one hand, so that the tension of the first stay cable 6 is reduced, and the support beam 7 in the width direction is connected on the other hand, so that the strength of the support beam 7 is enhanced, and the stability of the large-span cable-stayed bridge structure is improved.
Further, the cable-stayed bridge structure further comprises:
and the auxiliary pier 10 is arranged below the road deck 2, and the auxiliary pier 10 is arranged to avoid the cable tower 3 and the support beam 7.
Specifically, the auxiliary pier 10 can reduce the stress variation of the second stay cable 8, improve the rigidity of two adjacent support beams 7 in the length direction, and alleviate the negative reaction at the joint of the second stay cable 8 and the road deck 2, so that the auxiliary pier is more suitable for being applied to a large-span cable-stayed bridge structure.
It should be noted that the auxiliary piers 10 may be disposed at the center of the road deck 2, or may be disposed at both ends of the road deck 2 in the width direction, in this embodiment, disposed at both ends of the road deck 2 in the width direction.
Further, the included angle between the first stay cable 6 and the track bridge surface 1 is 20-55 degrees, and the included angle between the second stay cable 8 and the road bridge surface 2 is 20-55 degrees.
Furthermore, the included angle between the first stay cable 6 and the track bridge surface 1 is 35-45 degrees, and the included angle between the second stay cable 8 and the road bridge surface 2 is 35-45 degrees.
Generally, the horizontal inclination angle α of the stay cable (i.e. the included angle between the first stay cable 6 and the track deck 1 and the included angle between the second stay cable 8 and the road deck 2) should not be less than 20 °, otherwise the vertical force provided by the stay cable is small, the total tension is large, the steel consumption of the corresponding stay cable is large, the sag influence is also large, when α is 55 °, the support rigidity of the stay cable to the deck is maximum, but bending and displacement of the pylon 3 are easily caused, and finally, through measurement and calculation, when α is 45 °, the stay cable can exert the maximum benefit, which means that the rigidity provided by the stay cable can be matched with the economic performance of manufacturing, and when α is 35 °, the stay cable can provide the maximum rigidity.
Further, the ratio of the side span L2 to the main span L1 on the track deck 1 ranges from 0.2 to 0.25, wherein the side span L2 is the distance between the outermost pylon and the end of the cable-stayed bridge structure length, and the main span L1 is the distance between the adjacent pylons 3.
The ratio of the side span L2 to the main span L1 is 0.2 to 0.25, and in this ratio range, it is more suitable for a large-span cable-stayed bridge structure, when the two spans (the side span L2 and the main span L1) are equal, because the constraint effect of the side span L2 and the end anchor cable (stay cable) on the deformation of the main span L1 is lost, it should be noted that, for a road and an urban bridge with a small load specific gravity, i.e. the road deck 2 of the present embodiment, the reasonable ratio of the side main span is 0.40 to 0.45, and for a railway bridge with a large load specific gravity, i.e. the railway bridge attached to the deck 1 of the present embodiment, the ratio of the side main span is preferably 0.20 to 0.25.
It should be noted that, it is necessary to determine how many cable towers 3 are used according to the length of the whole cable-stayed bridge structure and the ratio of the main span L1 of the side span L2, which is a calculation method known to those skilled in the art and will not be described herein again.
Further, the cable tower 3 is an inverted Y-shaped, a-shaped or twin cable tower.
It should be noted that the twin cable tower is two cable towers symmetrically arranged in a Y shape, which is a concept known to those skilled in the art and will not be described herein, and an inverted Y-shaped cable tower is adopted in this embodiment.
Specifically, the track bridge deck 1 of the present embodiment employs the oblique double cable surfaces, which are particularly advantageous for the bridge deck to resist wind torsional vibration (the oblique double cable surfaces limit the transverse swing of the track bridge deck 1 and the highway bridge deck 2), and generally employs the form of the stay cable when the span is greater than 600m (i.e. a large-span cable-stayed bridge), or when the wind-resistant requirement cannot be met; the highway bridge surface 2 is in a stay cable form of a vertical double-sided lock, the torque acting on the highway bridge surface 2 can be resisted by the axial force of the second stay cable 8, the highway bridge surface 2 can adopt a section with smaller torsional rigidity, the wind resistance of the cross section is relatively weaker, and the second layer adopts a simpler stay cable construction method of the vertical double-sided lock because the first layer already bears wind power.
Further, the cable-stayed bridge structure further comprises guardrails which are arranged on two sides of the width direction of the track bridge floor 1 and the width direction of the highway bridge floor 2.
The guardrail is arranged to prevent the vehicle from directly falling under the bridge when the vehicle is temporarily in trouble or fault, in this embodiment, the guardrail is not shown, but those skilled in the art should know the position of the guardrail, and it should be noted that the guardrail of the cable-stayed bridge structure is located inside the first stay cable 6 and the second stay cable 8.
The drawings of the present embodiment are schematic views, and the number and angles of the first stay cables 6 and the second stay cables 8 used in actual construction are not limited thereto.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (8)
1. The utility model provides a dual-purpose cable-stay bridge structure of public rail of double-deck bridge floor which characterized in that, the cable-stay bridge structure includes:
a track deck;
the road bridge deck is positioned below the track bridge deck and is wider than the track bridge deck;
the middle section of the cable tower is wider than the upper end section of the cable tower, and the cable towers are respectively and fixedly connected with the track bridge floor and the highway bridge floor;
the first bearing beam is fixedly connected with the cable tower and is positioned below the track bridge floor;
the second bearing beam is fixedly connected with the cable tower and is positioned below the forehead of the highway bridge floor;
the first stay cable is used for connecting the cable tower and the track bridge floor;
the supporting beams are arranged between the track bridge floor and the highway bridge floor, are positioned at two ends of the width direction of the highway bridge floor, and are positioned between the adjacent cable towers;
and the second stay cable is used for connecting the supporting beam and the road deck.
2. A dual deck highway rail cable-stayed bridge structure according to claim 1, further comprising:
the cross beam is arranged below the track bridge floor and is fixedly connected with the supporting beam.
3. The dual-purpose cable-stayed bridge structure for double deck highway rails according to claim 1, further comprising:
the auxiliary pier is arranged below the road bridge floor and is kept away from the cable tower and the supporting beam.
4. A cable-stayed bridge structure for double deck highway rails according to claim 1, wherein the angle between the first stay cable and the track bridge deck is 20 ° to 55 ° and the angle between the second stay cable and the highway bridge deck is 20 ° to 55 °.
5. The dual-purpose cable-stayed bridge structure for the double-deck public rail as claimed in claim 1, wherein the included angle between the first stay cable and the track bridge deck is 35 ° to 45 °, and the included angle between the second stay cable and the road bridge deck is 35 ° to 45 °.
6. A cable-stayed bridge structure for double deck highway rails according to any one of claims 1 to 5, wherein the ratio of an upper side span of said track deck to a main span is in the range of 0.2 to 0.25, wherein said side span is the distance between the outermost pylon and the end of the length of said cable-stayed bridge structure, and said main span is the distance between adjacent pylons.
7. A double deck highway rail dual purpose cable-stayed bridge structure according to any one of claims 1 to 5, wherein said pylons are inverted Y-shaped, A-shaped or twin-type pylons.
8. The dual-purpose cable-stayed bridge structure for the double-deck public rail as claimed in any one of claims 1 to 5, wherein the cable-stayed bridge structure further comprises guardrails disposed on both sides of the width direction of the track deck and the road deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122722518.4U CN216688977U (en) | 2021-11-09 | 2021-11-09 | Dual-purpose cable-stayed bridge structure for double-deck public rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122722518.4U CN216688977U (en) | 2021-11-09 | 2021-11-09 | Dual-purpose cable-stayed bridge structure for double-deck public rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216688977U true CN216688977U (en) | 2022-06-07 |
Family
ID=81832091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122722518.4U Active CN216688977U (en) | 2021-11-09 | 2021-11-09 | Dual-purpose cable-stayed bridge structure for double-deck public rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216688977U (en) |
-
2021
- 2021-11-09 CN CN202122722518.4U patent/CN216688977U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201581344U (en) | Double track railway steel truss cable-stayed bridge | |
| CN205775786U (en) | A kind of novel railway curve Cable-stayed Bridge with Slanted Pylon | |
| CN106567320B (en) | The local gravity rigidity and auxiliary suspension cable structure system of large span stayed-cable bridge | |
| Oliveira Pedro et al. | Composite cable-stayed bridges: state of the art | |
| CN111962372A (en) | Road-rail combined construction steel web member double-combination continuous truss girder and construction method thereof | |
| CN112144371A (en) | Cable-stayed suspension cable cooperation system bridge | |
| CN216688977U (en) | Dual-purpose cable-stayed bridge structure for double-deck public rail | |
| CN212335738U (en) | Double-combination continuous truss girder of combined steel web member for highway and railway construction | |
| CN111101434B (en) | Cable-stayed bridge with tensioned midspan girder | |
| CN109763417B (en) | Cable-stayed steel truss cooperative system bridge | |
| CN111472253A (en) | Cable-stayed bridge of steel truss stiffened concrete beam | |
| CN215482233U (en) | Truss hybrid beam cable-stayed bridge | |
| CN214459528U (en) | Board purlin combination system view bridge | |
| CN212742149U (en) | Integral bridge | |
| CN217974008U (en) | Central cable plane cable-stayed bridge | |
| CN219059719U (en) | Steel structure bridge | |
| CN217810457U (en) | Beam-arch combined structure | |
| CN211142772U (en) | Highway-railway same-layer hybrid beam suspension cable stayed cooperative bridge | |
| CN210002234U (en) | cable-stayed bridge with multi-pass function | |
| CN216689031U (en) | Cable-stayed bridge deck structure of highway and track dual-purpose bridge | |
| CN212335661U (en) | Single-cable-surface large-span bridge structure suitable for straddle type monorail | |
| CN217556670U (en) | Bridge head butt strap structure for bridge and roadbed transition | |
| CN216074709U (en) | Space double-helix steel structure bridge | |
| CN212000578U (en) | Tower pier beam consolidation system of railway high-pier and low-tower cable-stayed bridge | |
| CN208501476U (en) | It is that long the United Nations General Assembly's stroke rail-road is layered bridge pier beam integrated structure that one kind, which being suitable for two sides, |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |