CN110184890B - Bridge span structure - Google Patents
Bridge span structure Download PDFInfo
- Publication number
- CN110184890B CN110184890B CN201910580077.3A CN201910580077A CN110184890B CN 110184890 B CN110184890 B CN 110184890B CN 201910580077 A CN201910580077 A CN 201910580077A CN 110184890 B CN110184890 B CN 110184890B
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- bridge
- truss
- suspension
- cable
- deck
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- 239000000725 suspension Substances 0.000 claims abstract description 65
- 238000005452 bending Methods 0.000 claims description 13
- 230000000007 visual effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a bridge span structure, which comprises a truss bridge part (1) and a suspension bridge part which are connected with each other. Compared with the prior art, the method is suitable for the situation that the trend of the three-terminal road cannot be completely aligned; the structure is light and the material is saved; the visual field on the bridge is wide; the space under the bridge is spacious, which is beneficial to navigation.
Description
Technical Field
The invention relates to the field of bridge spans, in particular to a bridge span structure.
Background
Traditionally, there are four types of bridge structural systems: beam bridges, arch bridges, suspension bridges, rigid frame bridges. With the development of building materials and design technology, new bridge systems are derived on the basis of four bridge types. Such as cable-stayed bridges, suspension bridges, etc.
The bridge span structure number of the bridge can be divided into single span, two spans, three spans, multiple spans and the like. The fewer bridge spans, the fewer bridge piers are needed, the bridge piers can influence the passage of the channel, and the construction is generally under water, so that the construction is expensive, the operation is difficult and the risk is high. Under conditions of economy and technology, it is generally desirable to achieve spanning using as large a span as possible and as small a number of spans as possible.
However, in practice, there is often a situation that three or more plots need to be connected by a bridge, and at this time, the conventional bridge span structure system often only considers two-point connection, so that it is difficult to meet such a requirement, and it is necessary to consider a new structure system according to the actual site conditions and bridge building functions. For the ideal three-side equilateral condition, the two-point bridge system can adopt annular, star-shaped and other plane arrangement, and is solved by extending the traditional bridge system with two-point connection into three-point connection. However, in reality, it is also often encountered that two of the three banks are closer together, while the third bank is farther apart from the other two banks. At this time, the single bridge form is difficult to fully exert advantages, and the comprehensive solution is a more reasonable scheme in a combined mode according to local conditions.
Therefore, a bridge span structure needs to be designed, and the bridge span structure is applied to a bridge, so that the advantages of various bridge types are fully exerted, and the bridge design which is economical, feasible, attractive and practical is obtained.
Disclosure of Invention
The present invention aims to overcome the above-mentioned drawbacks of the prior art by providing a bridge span structure.
The aim of the invention can be achieved by the following technical scheme:
a bridge span structure comprises a truss bridge portion and a suspension bridge portion which are connected with each other.
The truss bridge comprises an upper chord, a truss bridge deck, a lower chord and web members, wherein the web members are respectively connected with the upper chord and the lower chord, and the truss bridge deck is connected with the upper chord or the lower chord.
The bridge deck of the truss bridge is a bending plane.
One end of the suspension bridge part is connected with the bending part of the bending plane, and the other end of the suspension bridge part is connected with the ground abutment.
The suspension bridge part comprises a suspension bridge deck and a cable rod assembly which are connected with each other.
The cable rod assembly comprises a mast, a back cable, a main cable and a suspender, wherein the main cable is respectively connected with the back cable, the mast and the suspender, and the suspender is connected with a bridge deck of the suspension bridge.
The suspender is connected with one side of the bridge deck of the suspension bridge.
The included angle between the suspender and the bridge deck of the suspension bridge is 40-70 degrees.
One end of the main cable is connected with the top ends of the mast and the back cable, and the other end of the main cable is connected with the truss bridge part.
The bottom ends of the mast and the back rope are connected with the ground bridge abutment.
Compared with the prior art, the invention has the following advantages:
(1) The structure that the suspension bridge part is connected with the truss bridge part is adopted, and the truss bridge part provides an elastic boundary for one end of the suspension bridge part objectively.
(2) The truss bridge deck is a bending plane, one end of the suspension bridge is connected with the bending part of the bending plane, and the truss bridge deck can be applied to the situation that the trend of the three-end road cannot be completely aligned.
(3) The structure is light and handy, the dead weight of the bridge body is reduced, and the material is saved.
(4) The visual field on the bridge is wide: for the suspension bridge part, the suspender is only connected with the suspension bridge deck at one side close to the mast, so that the other side has no structure to shield the view, and the view and the field of view can be wider.
(5) The space under the bridge is spacious: for the suspension bridge part, the suspension bridge part is mainly supported by a mast and a back rope, and only the other end of the suspension bridge part is connected with a ground abutment by a pillar, so that the space under the bridge is spacious, and the suspension bridge is beneficial to navigation.
(6) The included angle between the suspender and the bridge deck of the suspension bridge is 40-70 degrees, and the suspension bridge has good stability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of a front view of the present invention;
FIG. 4 is a schematic side view of the present invention;
FIG. 5 is a schematic view of an exploded construction of the present invention;
FIG. 6 is a deformation diagram of the usage state of the embodiment of the present invention;
reference numerals:
1 is a truss bridge part; 2 is a suspension bridge deck; 3 is a suspender; 4 is a main cable; 5 is a mast; and 6 is a dorsal cable.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Examples
A novel three-fork bridge span structure can be applied to bridges which are connected with three banks and have unequal spans and is used as a part of the bridge structure.
As shown in fig. 1-5, the bridge span structure is composed of a truss bridge portion 1 and a suspension bridge portion. The truss bridge part 1 comprises an upper chord, a truss bridge deck, a lower chord and a web member, wherein the web member is respectively connected with the upper chord and the lower chord, the truss bridge deck is connected with the upper chord or the lower chord, and the truss bridge deck is a bending plane. The suspension bridge part consists of a suspension bridge deck 2 and a cable bar assembly. The bridge deck 2 part of the suspension bridge comprises a ridge beam, a cantilever beam and an edge sealing beam. The bridge deck 2 of the suspension bridge is a straight plane; one side of the suspension bridge deck 2 is overhanging; one end of the suspension bridge deck 2 is connected with the bending part of the truss bridge deck, one end of the suspension bridge deck 2 is rigidly connected with the bending part of the truss bridge deck, and the other end of the suspension bridge deck is supported by a ground bridge abutment. The cable assembly comprises a boom 3, a main cable 4, a mast 5 and a back cable 6. The cable-stayed system formed by the suspender 3 and the main cable 4 pulls the non-overhanging side of the suspension cable bridge deck, the load is transmitted to the main cable 4 through the suspender 3 and then transmitted to the mast 5, and the two back cables 6 are arranged on the back to balance the tension of the main cable 4.
The boom 3 is connected with one side of the bridge deck 2 of the suspension bridge, and the included angle between the boom 3 and the bridge deck 2 of the suspension bridge is 40-70 degrees.
The main cable 4 is connected at one end to the mast 5 and at the other end to the upper chord of the truss bridge 1. The top end of the mast 5 is connected with the back rope 6 and the main cable 4, and the bottom end is directly connected with the ground abutment.
The top ends of the two back cables 6 are connected with the top end of the mast 5, and the bottom ends of the two back cables are directly connected with the ground abutment.
The maximum span part of the bridge span structure adopts a suspension bridge.
Taking a three-way landscape walking bridge as an example:
a certain three-fork landscape walking bridge has a bridge span of 135m in the whole length and a main span of 121m, and is mainly a light structure system, and the three-fork Y-shaped non-column layout adopts a rigid-flexible combined structure scheme of a single-side asymmetric suspension rope and truss system.
The bridge span comprises a truss bridge part 1 and a suspension bridge part, wherein one end of the suspension bridge part is connected with the bending part of the bridge deck of the truss bridge, the other end of the suspension bridge part is placed on a ground bridge abutment support, and the bridge deck 2 of the suspension bridge is selected as a variable cross section cantilever beam; the suspension bridge part also comprises a suspender 3, a main cable 4, a mast 5 and a back cable 6, wherein the plane of the truss bridge part 1 is a fold line-shaped plane, the bent part is connected with the suspension bridge part, and one side of the truss bridge deck bent is formed at an angle of 133 degrees with the suspension bridge part, and the other side is formed at an angle of 103 degrees; the boom 3 is connected with the suspension bridge deck 2 in an oblique direction and only exists on one side of the direction of the mast 5, so that the boom 3 does not influence the visual field of the other side of the suspension bridge deck 2, load is transmitted to the main cable 4 through the boom 3 and then to the mast 5, and the main cable 4 and the mast 5 are balanced through the back cable 6. The lower ends of the mast 5 and the back rope 6 are connected with the ground bridge abutment, and the upper ends are connected with the main cable 4.
The bridge span structure has good structural performance under the condition of meeting the functional requirement.
The main cable 4 adopts high-strength inhaul cable materials such as high-vanadium coating cables, sealing steel wire ropes and the like.
Fig. 6 shows the result of the correlation displacement analysis. Analysis shows that the maximum displacement of the structure occurs in the midspan part of the suspension bridge, the three-way bridge is deformed to present good integrity, and all indexes of the structure can meet the standard requirements of design safety use, and the method is economical and feasible.
Compared with the prior art, the invention has the following beneficial effects:
1. the bridge deck wiring of adaptation three turnout shapes is applicable to the condition that three-terminal road trend can not be completely aligned.
2. Adopting a structure that the suspension bridge part is connected with the truss bridge part, and providing an elastic boundary for one end of the suspension bridge part by the truss bridge part in an objective way at the boundary position of the connection part;
3. compared with a general bridge span with a structure, the bridge span has the advantages that the structure is light and handy, the structural part of the bridge span with the largest span adopts the form of a suspension bridge, the main tension part of the bridge span has no instability problem, the section can be minimized by adopting a cable-stayed system, the compression part is a steel beam, and the stability is easy to ensure. Therefore, the utilization efficiency of the whole material is high, compared with the bridge type of the traditional single system, the dead weight of the bridge body is greatly reduced, and the material is saved.
4. The visual field on the bridge is wide, and for the suspension bridge part, the suspender is only connected with the bridge deck at one side close to the mast, so that the other side does not have a structure to shield the visual field, and compared with the traditional suspension bridge, the suspension bridge has wider view and visual field.
5. The space under the bridge is spacious, and for the suspension bridge part, the suspension bridge part is mainly borne by the mast and the back rope, in addition, one end of the suspension bridge is directly connected with the truss bridge part, and the other end of the suspension bridge is only connected with the ground bridge abutment, so that the space under the bridge is spacious, and the navigation is facilitated.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (3)
1. A bridge span structure, characterized by comprising a truss bridge part (1) and a suspension bridge part which are connected with each other;
the truss bridge part (1) comprises a truss and a truss bridge deck which are connected with each other, the truss bridge deck is a bending plane, the suspension bridge part comprises a suspension bridge deck (2) and a cable rod assembly which are connected with each other, one end of the suspension bridge deck (2) is connected with a bending part of the bending plane, the other end of the suspension bridge deck is connected with a first ground bridge abutment, two ends of the truss bridge deck are respectively connected with a second ground bridge abutment and a third ground bridge abutment, and the cable rod assembly is respectively connected with the first ground bridge abutment and the truss;
the truss comprises an upper chord, a lower chord and a web member, wherein the web member is respectively connected with the upper chord and the lower chord, and the bridge deck of the truss bridge is connected with the upper chord or the lower chord;
the cable pole assembly comprises a mast (5), a back cable (6), a main cable (4) and a suspender (3), wherein the main cable (4) is respectively connected with the back cable (6), the mast (5) and the suspender (3), the suspender (3) is connected with a suspension bridge deck (2), one end of the main cable (4) is connected with the top ends of the mast (5) and the back cable (6), and the other end of the main cable is connected with a truss bridge portion (1).
2. A bridge span structure according to claim 1, characterized in that the boom (3) is connected to the suspension bridge deck (2) on one side.
3. The bridge span structure according to claim 1, wherein the included angle between the boom (3) and the suspension bridge deck (2) is 40-70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910580077.3A CN110184890B (en) | 2019-06-28 | 2019-06-28 | Bridge span structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910580077.3A CN110184890B (en) | 2019-06-28 | 2019-06-28 | Bridge span structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110184890A CN110184890A (en) | 2019-08-30 |
| CN110184890B true CN110184890B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910580077.3A Active CN110184890B (en) | 2019-06-28 | 2019-06-28 | Bridge span structure |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113897849B (en) * | 2021-10-08 | 2024-06-11 | 张家港保税区金港建设工程质量检测有限公司 | Three-fork single main cable pedestrian suspension bridge and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014645A1 (en) * | 1999-08-24 | 2001-03-01 | Freyssinet International (Stup) | Method for constructing a cable-stayed bridge |
| CN101078196A (en) * | 2007-07-04 | 2007-11-28 | 湖南省交通规划勘察设计院 | Single-tower self-anchored suspension bridge |
| CN105755945A (en) * | 2016-04-06 | 2016-07-13 | 广州市市政工程设计研究总院 | Y-shaped triangular steel truss beam bridge |
| CN205676768U (en) * | 2016-03-23 | 2016-11-09 | 兰州铁道设计院有限公司 | The large span space three-dimensional intersection chevron shaped overline bridge of steel construction |
| WO2017129937A1 (en) * | 2016-01-28 | 2017-08-03 | John Michael Corney | Long span suspension bridges - cable geometry |
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| CN108755385A (en) * | 2018-07-10 | 2018-11-06 | 福州大学 | A kind of only Cable-stayed Bridge with Slanted Pylon structure and construction method of active balance main span horizontal force |
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-
2019
- 2019-06-28 CN CN201910580077.3A patent/CN110184890B/en active Active
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|---|---|---|---|---|
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| WO2017129937A1 (en) * | 2016-01-28 | 2017-08-03 | John Michael Corney | Long span suspension bridges - cable geometry |
| CN205676768U (en) * | 2016-03-23 | 2016-11-09 | 兰州铁道设计院有限公司 | The large span space three-dimensional intersection chevron shaped overline bridge of steel construction |
| CN105755945A (en) * | 2016-04-06 | 2016-07-13 | 广州市市政工程设计研究总院 | Y-shaped triangular steel truss beam bridge |
| CN206457713U (en) * | 2016-12-28 | 2017-09-01 | 湖北省城建设计院有限公司 | A kind of lightweight hybrid beam single cable plane low-pylon cable-stayed bridge system |
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| CN108755385A (en) * | 2018-07-10 | 2018-11-06 | 福州大学 | A kind of only Cable-stayed Bridge with Slanted Pylon structure and construction method of active balance main span horizontal force |
| CN109763417A (en) * | 2019-01-31 | 2019-05-17 | 同济大学建筑设计研究院(集团)有限公司 | A kind of cable stayed steel truss co-operative system bridge |
| CN210946439U (en) * | 2019-06-28 | 2020-07-07 | 同济大学建筑设计研究院(集团)有限公司 | Bridge span structure |
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| CN110184890A (en) | 2019-08-30 |
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