CN110761169A - Four-track railway middle-through short-tower cable-stayed bridge - Google Patents
Four-track railway middle-through short-tower cable-stayed bridge Download PDFInfo
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- CN110761169A CN110761169A CN201911031740.0A CN201911031740A CN110761169A CN 110761169 A CN110761169 A CN 110761169A CN 201911031740 A CN201911031740 A CN 201911031740A CN 110761169 A CN110761169 A CN 110761169A
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- 238000010276 construction Methods 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 description 3
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- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 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
- E01D11/04—Cable-stayed bridges
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- 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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
The invention belongs to the technical field of bridge construction, and particularly relates to a cable-stayed bridge through a short tower in a four-line railway, which comprises a main beam, a bridge tower, a pier and a stay cable; the bridge tower is arranged on the main beam, and the bottom of the bridge tower is fixedly connected with the main beam; the bridge pier is arranged below the bridge tower, and the top of the bridge pier is fixedly connected with the main beam; four-line railway lines are arranged on the main beam, and two railway lines are arranged on each side of the bridge tower along the bridge direction; and an inclined stay cable is arranged between the bridge tower and the main beam, and two ends of the inclined stay cable are respectively anchored with the bridge tower and the main beam. The invention fully utilizes the larger line spacing between the middle two lines of the four-line railway, adopts the main beam penetrating through the bridge tower, has two railway lines at each side of the bridge tower along the bridge direction, and the bridge tower and the bridge pier are fixedly connected with the main beam, the structure stress is reasonable, the engineering quantity of the bridge tower is greatly reduced, the engineering cost is saved, the special plane linear requirement of the four-line railway is met, and the requirements of stress safety, cost economy and attractive structure of the four-line railway bridge are met.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a cable-stayed bridge for four-track railway through a short tower.
Background
With the continuous development and the technical progress of national railway construction, the river-crossing channel resources are more and more, so that the bridge engineering of the four-line railway co-construction is more and more. In the existing railway cable-stayed bridge, a railway is usually built between two tower columns of a bridge tower, and the railway is supported on a support of the bridge tower. And the distance between the lines 1 and 2 and the distance between the lines 3 and 4 of the four-line railway are smaller, the distance between the lines 2 and 3 in the middle is larger, the overall breadth is wider, and the bridge tower is larger in transverse size and high in manufacturing cost. Therefore, there is a need for a four-wire railway cable-stayed bridge which can sufficiently utilize the space between 2 wires and 3 wires to overcome the above problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the cable-stayed bridge for the four-line railway through the short tower, which can fully utilize the distance between the line 2 and the line 3 of the four-line railway to penetrate the main beam in the bridge tower, has reasonable structural stress and can greatly reduce the engineering quantity of the bridge tower.
In order to achieve the purpose, the technical scheme of the invention is a cable-stayed bridge for a four-line railway through short towers, which comprises a main beam, a bridge tower, a pier and a stay cable; the bridge tower is arranged on the main beam, and the bottom of the bridge tower is fixedly connected with the main beam; the bridge pier is arranged below the bridge tower, and the top of the bridge pier is fixedly connected with the main beam; four-line railway lines are arranged on the main beam, and two railway lines are arranged on each side of the bridge tower along the bridge direction; and an inclined stay cable is arranged between the bridge tower and the main beam, and two ends of the inclined stay cable are respectively anchored with the bridge tower and the main beam.
Furthermore, the main beam is of a box-type structure and comprises a top plate, a bottom plate, two inclined web plates and two straight web plates, wherein two ends of the top plate are respectively connected with two ends of the bottom plate through the two inclined web plates, the two straight web plates are both positioned between the two inclined web plates, and two ends of each straight web plate are respectively connected with the top plate and the bottom plate; the bridge tower is located on the box chamber between the two straight webs of the main beam.
Furthermore, one end of the stay cable is anchored at the top of the bridge tower, and the other end of the stay cable is anchored in a box chamber between two straight webs of the main beam.
Furthermore, the bridge tower comprises an upper tower column and two lower tower columns arranged along the bridge direction, the tops of the two lower tower columns are fixedly connected with the bottom of the upper tower column, and the bottom of each lower tower column is fixedly connected with the main beam; and the two sides of the upper tower column in the transverse bridge direction are connected with the main beam through stay cables.
Furthermore, two transverse clapboards are arranged at the position below the bridge tower in the main beam, and two lower tower columns of the bridge tower are respectively fixedly connected with the two transverse clapboards.
Furthermore, the pier is a double-limb thin-wall pier, and two limb thin-wall pier columns of the double-limb thin-wall pier are respectively fixedly connected with the two diaphragm plates.
Furthermore, a pier foundation is arranged at the bottom of the pier.
Furthermore, at least one bridge tower is arranged, and two sides of each bridge tower in the transverse bridge direction are connected with the main beam through stay cables; the bridge piers correspond to the bridge towers one by one.
Compared with the prior art, the invention has the following beneficial effects:
(1) the through-short-tower cable-stayed bridge in the four-line railway provided by the invention fully utilizes the larger line spacing between the middle two lines of the four-line railway, the main beam penetrates through the bridge tower, two railway lines are arranged on each side of the bridge tower along the bridge direction, and the bridge tower and the bridge pier are fixedly connected with the main beam, so that the structural stress is reasonable, the engineering quantity of the bridge tower is greatly reduced, the engineering cost is saved, the special plane linear requirement of the four-line railway is met, and the requirements of stress safety, cost economy and attractive structure of the four-line railway bridge are met;
(2) the transverse bridge of the bridge tower of the cable-stayed bridge penetrating through the short tower in the four-line railway adopts the single-limb column, the herringbone structure is adopted along the bridge direction, the longitudinal lower tower columns of two limbs are respectively fixedly connected with the two transverse partition plates of the main beam, the two transverse partition plates of the main beam are respectively fixedly connected with the two thin-wall pier columns of the double-limb thin-wall pier, and the smooth transmission of huge vertical force of a cable tower is ensured;
(3) the main beam of the cable-stayed bridge penetrating through the short towers in the four-line railway provided by the invention adopts the wide integral box beam, has the advantages of good integral performance and high torsional rigidity, and can meet the requirements of the railway on transverse deformation and torsional deformation of the main beam
(4) The bridge tower of the cable-stayed bridge penetrating through the short towers in the four-line railway is positioned in the center of the middle box chamber of the main beam, one end of each stay cable is anchored at the top of the bridge tower, and the other end of each stay cable is anchored in the middle box chamber of the main beam.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an elevation view of a cable-stayed bridge through a short tower in a four-track railway according to an embodiment of the present invention;
FIG. 2 is a schematic transverse view of a bridge deck of a cable-stayed bridge penetrating through short towers in a four-track railway according to an embodiment of the invention;
FIG. 3 is a schematic transverse view of a pylon of a cable-stayed bridge passing through a short pylon in a four-track railway according to an embodiment of the invention;
FIG. 4 is a schematic longitudinal view of a pylon of a cable-stayed bridge penetrating through a short pylon in a four-track railway according to an embodiment of the invention;
in the figure: 1. the main beam, 11, a top plate, 12, a bottom plate, 13, an inclined web plate, 14, a straight web plate, 15, a diaphragm plate, 2, a bridge tower, 21, an upper tower column, 22, a lower tower column, 3, a double-limb thin-wall pier, 4, a stay cable, 5 and a pier foundation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1-4, the present embodiment provides a cable-stayed bridge through short towers in a four-track railway, including a main beam 1, a bridge tower 2, a pier and a stay cable 4; the bridge tower 2 is arranged on the main beam 1, and the bottom of the bridge tower 2 is fixedly connected with the main beam 1; the bridge piers are arranged below the bridge tower 2, and the tops of the bridge piers are fixedly connected with the main beams 1; the main beam 1 is provided with four-line railway lines, and each side of the bridge tower 2 along the bridge direction is provided with two railway lines; and a stay cable 4 is arranged between the bridge tower 2 and the main beam 1, and two ends of the stay cable 4 are respectively anchored with the bridge tower 2 and the main beam 1. As shown in fig. 2, the lines 1 and 2 of the four-line railway, the lines 3 and 4 are all normal line spacing, about 4.0-5.0 m, which are respectively located at two sides of the bridge tower 2, the lines 2 and 3 of the railway are relatively large in line spacing, the embodiment makes full use of the large space arrangement bridge tower 2 structure between the two middle lines of the four-line railway, the bridge tower 2 is arranged at the center of the bridge deck, two iron lines are arranged at each side of the bridge tower 2 along the bridge direction, and the bridge tower 2 and the bridge piers are fixedly connected with the main beam 1, the structure stress is reasonable, the engineering quantity of the cable tower is greatly reduced, the engineering cost is saved, the special plane linear requirement of the four-line railway is met, and the requirements of stress safety, cost economy and attractive structure of the four-line railway bridge are met.
Further, the main beam 1 is of a box-type structure and comprises a top plate 11, a bottom plate 12, two inclined web plates 13 and two straight web plates 14, two ends of the top plate 11 are connected with two ends of the bottom plate 12 through the two inclined web plates 13 respectively, the two straight web plates 14 are located between the two inclined web plates 13, and two ends of the straight web plates 14 are connected with the top plate 11 and the bottom plate 12 respectively; the bridge tower 2 is located on the box room between the two straight webs 14 of the main beam 1. As shown in fig. 3, the main beam 1 of the embodiment adopts a single-box three-chamber wide-width integral box type structure, and the bridge tower 2 is positioned on the middle box chamber, so that the main beam has the advantages of good integral performance and high torsional rigidity, and can meet the requirements of a railway on the transverse deformation and the torsional deformation of the main beam 1
Furthermore, one end of the stay cable 4 is anchored at the top of the bridge tower 2, and the other end is anchored in the box chamber between the two straight webs 14 of the main beam 1. As shown in fig. 2, the stay cable 4 is anchored in the middle box chamber of the single-box three-chamber integral box girder, so that the stay cable 4 is structurally combined with the main girder 1, the structure is simplified, the installation, the tensioning and the later-period maintenance of the stay cable 4 are more convenient, and the problems of installation and difficulty in maintenance caused by the fact that the anchoring structure is arranged on the outer side of the box girder are avoided.
Furthermore, the bridge tower 2 comprises an upper tower column 21 and two lower tower columns 22 arranged along the bridge direction, the tops of the two lower tower columns 22 are fixedly connected with the bottom of the upper tower column 21, and the bottom of each lower tower column 22 is fixedly connected with the main beam 1; and the two sides of the upper tower column 21 in the transverse bridge direction are connected with the main beam 1 through stay cables 4. As shown in fig. 3, the bridge tower 2 of the present embodiment is in the form of a single column in the transverse bridge direction, has a solid cross section and a small transverse dimension, so that the line distance between the 2 lines and the 3 lines of the railway can be reduced, and the total width of the main beam 1 can be reduced as much as possible. As shown in fig. 4, the pylon 2 is in a herringbone shape in the forward direction, the upper pylon 21 is a single strut with a larger size, which provides a better anchoring condition for anchoring the stay cable 4, and the upper pylon 21 to the lower pylon 22 are divided into two limbs by a single limb.
Furthermore, two transverse clapboards 15 are arranged at the position below the bridge tower 2 in the main beam 1, and two lower tower columns 22 of the bridge tower 2 are respectively fixedly connected with the two transverse clapboards 15. Furthermore, the pier is a double-limb thin-wall pier 3, and two limb thin-wall pier columns of the double-limb thin-wall pier 3 are respectively fixedly connected with the two diaphragm plates 15, so that smooth transmission of huge vertical force of the cable tower is ensured. The two-limb lower tower column 22 is respectively fixedly connected with the two diaphragm plates 15 in the main beam 1, and the two diaphragm plates 15 are fixedly connected with the two limbs of the double-limb thin-wall pier 3, so that the huge vertical force of the bridge tower 2 is smoothly transmitted.
Further, the bottom of the pier is provided with a pier foundation 5, and the pier foundation 5 can be a pile foundation or an enlarged foundation and the like.
Furthermore, at least one bridge tower 2 is arranged, and both sides of each bridge tower 2 in the transverse bridge direction are connected with the main beam 1 through stay cables 4; the bridge piers correspond to the bridge towers 2 one by one. As shown in fig. 3 and 4, two lateral sides of each bridge tower 2 are connected with the main beam 1 through a plurality of pairs of stay cables 4, one end of each stay cable 4 is anchored at the top of the upper tower column 21, and the other end is anchored in the middle box chamber of the main beam 1; the stay cables 4 positioned on the two sides of the bridge tower 2 in the transverse direction are symmetrically arranged relative to the bridge tower 2; optimally, the connection points of the stay cables 4 and the main beams 1, which are positioned on the same side of the transverse bridge direction of the main beams 1 and on the same side of the longitudinal symmetry plane of the bridge tower 2, are equidistantly arranged along the bridge direction, and the connection points of the stay cables 4 and the bridge tower 2, which are positioned on the same side of the transverse bridge direction of the main beams 1 and on the same side of the longitudinal symmetry plane of the bridge tower 2, are equidistantly arranged along the height direction of the bridge tower 2, so that the stress uniformity is ensured.
The cable-stayed bridge for penetrating the short towers in the four-line railway of the embodiment fully utilizes the plane condition that the line spacing between the lines 2 and 3 of the four-line railway is larger than the line spacing between the lines 1 and 2 and between the lines 3 and 4, adopts the arrangement form of penetrating the bridge deck in the bridge tower, can reduce the engineering quantity of the bridge tower, saves the engineering cost, is clear in stress, reasonable in structure, novel and attractive in appearance, light and soft in structure, can be perfectly combined with the surrounding environment, is good in economic benefit, and is wide in popularization and application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a wear short tower cable-stay bridge in four-wire railway which characterized in that: comprises a main beam, a bridge tower, a bridge pier and a stay cable; the bridge tower is arranged on the main beam, and the bottom of the bridge tower is fixedly connected with the main beam; the bridge pier is arranged below the bridge tower, and the top of the bridge pier is fixedly connected with the main beam; four-line railway lines are arranged on the main beam, and two railway lines are arranged on each side of the bridge tower along the bridge direction; and an inclined stay cable is arranged between the bridge tower and the main beam, and two ends of the inclined stay cable are respectively anchored with the bridge tower and the main beam.
2. The through-pylon cable-stayed bridge in a four-wire railway according to claim 1, wherein: the main beam is of a box-type structure and comprises a top plate, a bottom plate, two inclined web plates and two straight web plates, wherein two ends of the top plate are respectively connected with two ends of the bottom plate through the two inclined web plates, the two straight web plates are respectively positioned between the two inclined web plates, and two ends of each straight web plate are respectively connected with the top plate and the bottom plate; the bridge tower is located on the box chamber between the two straight webs of the main beam.
3. The through-pylon cable-stayed bridge in a four-wire railway according to claim 2, wherein: one end of the stay cable is anchored at the top of the bridge tower, and the other end of the stay cable is anchored in the box chamber between the two straight webs of the main beam.
4. The through-pylon cable-stayed bridge in a four-wire railway according to claim 2, wherein: the bridge tower comprises an upper tower column and two lower tower columns arranged along the bridge direction, the tops of the two lower tower columns are fixedly connected with the bottom of the upper tower column, and the bottom of each lower tower column is fixedly connected with the main beam; and the two sides of the upper tower column in the transverse bridge direction are connected with the main beam through stay cables.
5. The through-pylon cable-stayed bridge in a four-wire railway according to claim 4, wherein: two transverse clapboards are arranged at the position below the bridge tower in the main beam, and two lower tower columns of the bridge tower are respectively fixedly connected with the two transverse clapboards.
6. The through-pylon cable-stayed bridge in a four-wire railway according to claim 5, wherein: the pier is a double-limb thin-wall pier, and two limb thin-wall pier columns of the double-limb thin-wall pier are fixedly connected with the two diaphragm plates respectively.
7. The through-pylon cable-stayed bridge for four-track railway according to claim 1 or 6, wherein: and a pier foundation is arranged at the bottom of the pier.
8. The through-pylon cable-stayed bridge in a four-wire railway according to claim 1, wherein: at least one bridge tower is arranged, and two sides of each bridge tower in the transverse bridge direction are connected with the main beam through stay cables; the bridge piers correspond to the bridge towers one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031740.0A CN110761169A (en) | 2019-10-28 | 2019-10-28 | Four-track railway middle-through short-tower cable-stayed bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911031740.0A CN110761169A (en) | 2019-10-28 | 2019-10-28 | Four-track railway middle-through short-tower cable-stayed bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030711A (en) * | 2020-08-13 | 2020-12-04 | 中铁第四勘察设计院集团有限公司 | Multi-tower high-low tower rigid frame system cable-stayed bridge structure |
| CN114481800A (en) * | 2022-02-26 | 2022-05-13 | 中铁二院昆明勘察设计研究院有限责任公司 | Partial cable-stayed bridge tower beam pier consolidation system |
| CN114855587A (en) * | 2022-05-16 | 2022-08-05 | 中铁大桥勘测设计院集团有限公司 | Longitudinal self-balancing system cable-stayed bridge structure and construction method thereof |
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| CN107604804A (en) * | 2017-09-27 | 2018-01-19 | 中铁第四勘察设计院集团有限公司 | A kind of rail-road builds multi pylon cable stayed bridge with laminated |
| CN207919315U (en) * | 2018-02-27 | 2018-09-28 | 中铁第五勘察设计院集团有限公司 | Four line high-speed railway steel truss cable-stayed bridges |
| CN208762856U (en) * | 2018-08-01 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of low-pylon cable-stayed bridge with broad flange beam |
| CN211446553U (en) * | 2019-10-28 | 2020-09-08 | 中铁第四勘察设计院集团有限公司 | Four-track railway middle-through short-tower cable-stayed bridge |
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2019
- 2019-10-28 CN CN201911031740.0A patent/CN110761169A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604804A (en) * | 2017-09-27 | 2018-01-19 | 中铁第四勘察设计院集团有限公司 | A kind of rail-road builds multi pylon cable stayed bridge with laminated |
| CN207919315U (en) * | 2018-02-27 | 2018-09-28 | 中铁第五勘察设计院集团有限公司 | Four line high-speed railway steel truss cable-stayed bridges |
| CN208762856U (en) * | 2018-08-01 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of low-pylon cable-stayed bridge with broad flange beam |
| CN211446553U (en) * | 2019-10-28 | 2020-09-08 | 中铁第四勘察设计院集团有限公司 | Four-track railway middle-through short-tower cable-stayed bridge |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030711A (en) * | 2020-08-13 | 2020-12-04 | 中铁第四勘察设计院集团有限公司 | Multi-tower high-low tower rigid frame system cable-stayed bridge structure |
| CN114481800A (en) * | 2022-02-26 | 2022-05-13 | 中铁二院昆明勘察设计研究院有限责任公司 | Partial cable-stayed bridge tower beam pier consolidation system |
| CN114855587A (en) * | 2022-05-16 | 2022-08-05 | 中铁大桥勘测设计院集团有限公司 | Longitudinal self-balancing system cable-stayed bridge structure and construction method thereof |
| CN114855587B (en) * | 2022-05-16 | 2024-01-30 | 中铁大桥勘测设计院集团有限公司 | Cable-stayed bridge structure of longitudinal self-balancing system and construction method thereof |
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