CN211498430U - Stayed-cable steel truss through-center type arch bridge - Google Patents
Stayed-cable steel truss through-center type arch bridge Download PDFInfo
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- CN211498430U CN211498430U CN201922376497.8U CN201922376497U CN211498430U CN 211498430 U CN211498430 U CN 211498430U CN 201922376497 U CN201922376497 U CN 201922376497U CN 211498430 U CN211498430 U CN 211498430U
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Abstract
The utility model discloses a cable-stay steel truss through-put formula arched bridge, including motorway steel girder, non-motorway steel girder, pylon, suspension cable, steel truss, pylon cushion cap straining beam, pylon pile foundation, side span pier, side span cushion cap, side span pile foundation and non-motorway steel girder crossbeam. The steel main beam of the motorway rises to the top of the main span from the ground elevation in a quadratic parabola shape and then symmetrically descends to the ground elevation, and the steel main beam of the non-motorway is always kept horizontal. The steel main beam of the motorway is connected with the beam of the steel main beam of the non-motorway through the steel truss girder, two ends of the beam of the steel main beam of the non-motorway are connected with the steel main beam of the non-motorway, and the beam of the steel main beam of the non-motorway is fixedly connected with the bridge tower through the stay cable. The utility model discloses steel construction and the ingenious combination of cable structure, when alleviateed bridge self weight, the bridge is indulged horizontal bulk stiffness and has been promoted by a wide margin, and the structure atress is more, and the material obtains make full use of.
Description
Technical Field
The utility model relates to a traffic infrastructure industry bridge engineering technical field specifically is a hold formula arched bridge in drawing steel purlin to one side.
Background
Along with the continuous and rapid development of Chinese economy, the urbanization and industrialization process is continuously accelerated, the traffic infrastructure industry is rapidly developed, the requirements of people on urban landscape and environmental protection are higher and higher, and a large number of artistic-modeling bridges are gradually built. Especially, the urban landscape bridge not only requires safety and reliability, advanced technology, but also requires economy, environmental protection, beautiful landscape and new and different standards to form a business card of urban image.
In view of this, a bridge structure scheme with good landscape effect, efficient structural stress, economic and environment-friendly materials and advanced technology is in urgent need to be proposed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hold formula arched bridge in drawing steel purlin to one side to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a cable-stayed steel truss-in-center bearing type arch bridge comprises a motorway steel girder, a non-motorway steel girder, a bridge tower, a stay cable, a steel girder, a bridge tower bearing platform beam, a bridge tower pile foundation, a side-span bridge pier, a side-span bearing platform, a side-span pile foundation and a non-motorway steel girder beam, wherein the motorway steel girder and the non-motorway steel girder beam are connected through the steel girder, two ends of the non-motorway steel girder beam are connected with the non-motorway steel girder, the non-motorway steel girder beam is fixedly connected with the bridge tower through the stay cable, the bridge tower, the motorway steel girder and the non-motorway steel girder are arranged in an isolation manner, a bridge tower beam is welded between the bridge towers, a bridge tower bearing platform is cast at the top of the bridge tower pile foundation, a bridge tower bearing platform beam is cast at the inner side of the bridge tower bearing platform, a bridge tower is welded at the top of the bridge tower bearing platform, and a side span bearing platform is poured at the top of the side span pile foundation, and a side span pier is poured at the top of the side span bearing platform.
The whole steel main beam of the motor vehicle lane is of a parabolic structure, the bridge deck elevation within the main span range of the steel main beam of the motor vehicle lane is higher than that of the steel main beam of the non-motor vehicle lane, and the bridge deck elevation within the side span range of the steel main beam of the motor vehicle lane is lower than that of the steel main beam of the non-motor vehicle lane.
The automobile lane steel main beam is internally provided with an upper edge U-shaped rib and a lower edge U-shaped rib, and the non-automobile lane steel main beam is internally provided with an I-shaped rib.
The cross section of the vertical rod of the steel truss girder is of a rectangular hollow structure, the inclined rod of the steel truss girder adopts I-shaped steel, one end of the steel truss girder is welded with the steel main beam of the motor vehicle lane, and the other end of the steel truss girder is welded with the steel main beam cross beam of the non-motor vehicle lane.
The suspension cable adopts galvanized steel wire cable, the standard strength of steel wire cable is greater than 1670MPa, the suspension cable upper end is connected with anchor end steel anchor case, anchor end steel anchor case inlays inside the pylon, the suspension cable lower extreme is connected with and opens and draws end steel anchor case, stretch draw end steel anchor case with non-motor vehicle lane steel girder crossbeam anchor is connected.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a motorway steel girder adopts the parabola shape, and the main within range motorway steel girder bridge floor elevation of striding is higher than non-motorway steel girder bridge floor elevation, and limit within range motorway steel girder bridge floor elevation is less than non-motorway steel girder bridge floor elevation, and bridge self lines are outstanding, the outward appearance is graceful, the space permeability is strong, and it becomes mutually to complement with the modernization city design theory, fuses as an organic whole, can become the landmark view engineering in city, promotes city discernment and charm.
2. The utility model discloses the structure atress is high-efficient, material economy environmental protection, technology are advanced, and the steel girder of motorway passes through the steel truss connection with non-motorway steel girder crossbeam, and non-motorway steel girder is connected at non-motorway steel girder crossbeam both ends, and non-motorway steel girder crossbeam passes through the suspension cable with the bridge tower and realizes the rigid coupling. The steel construction combines with the ingenious of cable structure, when having alleviateed bridge self weight, the bridge is indulged horizontal bulk stiffness and has been promoted by a wide margin, and the structure atress is more, and the material obtains make full use of.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall top view structure of the present invention;
FIG. 3 is a schematic view of the cross section structure of the tower beam junction of the present invention;
FIG. 4 is a schematic view of the cross section of the main span center of the present invention;
FIG. 5 is a schematic cross-sectional view of the midspan of the side span of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of the side span beam end of the present invention.
In the figure: 1-vehicle lane steel main beam; 2-main steel beam of non-motor vehicle lane; 3-a bridge tower; 4-a bridge tower beam; 5-stay cables; 6-tensioning end steel anchor boxes; 7-steel trusses; 8-bridge tower bearing platform; 9-bridge tower bearing platform tie beam; 10-bridge tower pile foundation; 11-side span bridge pier; 12-side span platform; 13-side span pile foundation; 14-Main Steel Beam for non-motorized Lane.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a cable-stayed steel truss through-type arch bridge comprises a motorway steel girder 1, a non-motorway steel girder 2, a bridge tower 3, a stay cable 5, a steel truss 7, a bridge tower bearing platform 8, a bridge tower bearing platform tie beam 9, a bridge tower pile foundation 10, a side-span bridge pier 11, a side-span bearing platform 12, a side-span pile foundation 13 and a non-motorway steel girder cross beam 14, wherein the motorway steel girder 1 and the non-motorway steel girder cross beam 14 are connected through the steel truss 7, two ends of the non-motorway steel girder cross beam 14 are connected with the non-motorway steel girder 2, the non-motorway steel girder cross beam 14 is fixedly connected with the bridge tower 3 through the stay cable 5, the bridge tower 3, the motorway steel girder 1 and the non-motorway steel girder 2 are arranged in an isolation mode, bridge tower cross beams 4 are welded among the bridge towers 3, the bridge tower bearing platform 8 is poured at the top of the bridge tower pile foundation 10, a bridge tower bearing platform tie beam 9 is poured on the inner side of the bridge tower bearing platform 8, a bridge tower 3 is welded on the top of the bridge tower bearing platform 8, an edge-span bearing platform 12 is poured on the top of the edge-span pile foundation 13, and an edge-span pier 11 is poured on the top of the edge-span bearing platform 12.
The cable-stayed steel truss through arch bridge has the total length of 420m, the span arrangement of 100+220+100m, the rise height of 11.75m and the rise-to-span ratio of 1: 18.72; the height of the bridge tower 3 is 70m, the longitudinal section is 6.0m, and the transverse section is 3.5 m; the length of the bridge tower beam 4 is 16.5m, the section width is 5.0m, and the height is 3.0 m; the bridge tower bearing platform 8 is 17.5m in longitudinal direction, 10.0m in transverse direction and 5.0m in height; the length of the bridge tower bearing platform tie beam 9 is 10.5m, the section width is 5.0m, and the height is 3.0 m; the bridge tower pile foundations 10 are arranged according to 3 multiplied by 5, the diameter of each bridge tower pile foundation is 1.5m, and the piles are cast in a drilling mode.
Wherein the total width of the bridge is 32.0m, and the width of the opening area is 4.0 m; the plane of the bridge is provided with an opening area which reasonably divides a motor vehicle lane and a non-motor vehicle lane, wherein the motor vehicle lane is arranged between a left bridge tower and a right bridge tower, and the non-motor vehicle lane is arranged outside the left bridge tower and the right bridge tower; the full-bridge width direction is arranged as follows: the total width 32.0m is 4.0m + 8.0m + 4.0m + lane.
The whole automobile lane steel main beam 1 is of a parabolic structure, the height of the automobile lane steel main beam 1 is 2.0m, the width of the automobile lane steel main beam is 16.0m, the bridge deck elevation within the main span range of the automobile lane steel main beam 1 is higher than the bridge deck elevation of the non-automobile lane steel main beam 2, and the bridge deck elevation within the side span range of the automobile lane steel main beam 1 is lower than the bridge deck elevation of the non-automobile lane steel main beam 2.
The steel main beam 1 of the motor vehicle lane is in a parabola shape and is comprehensively determined according to the main bridge span, the rise-span ratio, the self weight of the steel main beam 1 of the motor vehicle lane, the self weight of the steel main beam 2 of the non-motor vehicle lane, the strength of the steel truss girder 7, the strength of the stay cable 5 and the requirements of the longitudinal slope of the road, and the rise-span ratio of the main bridge is 1:16-1: 20L.
The main steel beam 1 of the motor vehicle lane is internally provided with an upper edge U-shaped rib and a lower edge U-shaped rib, and the main steel beam 2 of the non-motor vehicle lane is internally provided with an I-shaped rib.
Wherein, the height of the flange of the steel main beam 2 of the non-motor vehicle lane is 0.5m, the height of the end part is 1.5m, and the width is 4.0 m.
The thickness of the top plate of the steel main beam 1 of the motor vehicle lane is 20-24mm, the thickness of the bottom plate of the steel main beam 1 of the motor vehicle lane is 20-28mm, the upper edge U-shaped rib and the lower edge U-shaped rib with the thickness of 8mm are arranged in the box chamber, the thickness of the top plate of the steel main beam 2 of the non-motor vehicle lane is 16-20mm, the thickness of the bottom plate of the steel main beam 2 of the non-motor vehicle lane is 16-20mm, and.
The cross section of a vertical rod of the steel truss girder 7 is of a rectangular hollow structure, the rectangular cross section is a square of 60cm, an I-shaped steel is adopted by an inclined rod of the steel truss girder 7, one end of the steel truss girder 7 is welded with a steel main beam 1 of a motor vehicle lane, the other end of the steel truss girder 7 is welded with a steel main beam cross beam 14 of a non-motor vehicle lane, and the steel main beam cross beam 14 of the non-motor vehicle lane is 1.5m in height and 1.6m in width and is connected in a field welding mode.
The suspension cable 5 adopts PES7-121 and PES7-139 models of galvanized steel wire cables, the standard strength of the steel wire cables is greater than 1670MPa, the upper end of the suspension cable 5 is connected with an anchoring end steel anchor box, the anchoring end steel anchor box is embedded inside the bridge tower 3, the lower end of the suspension cable 5 is connected with a tensioning end steel anchor box 6, and the tensioning end steel anchor box 6 is in anchoring connection with the steel girder cross beam 14 of the non-motor vehicle lane.
The embodiment of the utility model provides a concrete construction flow of deck-type arched bridge in cable-stay steel purlin does: foundation construction → construction of steel girder and steel truss girder → primary tension construction of stay cable → auxiliary construction of bridge deck → secondary tension construction of stay cable → dismantling construction of bracket.
(1) Construction of foundations
Firstly, cleaning a field and preparing materials. Secondly, under the premise of reliable protective measures, a temporary pier, a bridge tower 3, a bridge tower crossbeam 4, a bridge tower bearing platform 8, a bridge tower bearing platform tie beam 9, a bridge tower pile foundation 10, a side span pier 11, a side span bearing platform 12 and a side span pile foundation 13 are constructed.
(2) Steel girder and steel truss construction
The side-span motor vehicle lane steel main beam 1, the non-motor vehicle lane steel main beam 2 and the steel truss beam 7 are supported by full framing, and are spliced and welded on site;
the main span side firstly constructs and beats the steel pipe pile and sets up the construction trestle, guarantees that the trestle has enough intensity, rigidity, stability, secondly, sets up the loop wheel machine on the construction trestle, through boats and ships with main span side motor vehicle way steel girder 1, non-motor vehicle way steel girder 2 and steel longeron 7 hoist and mount and on-the-spot concatenation.
(3) Stay cable primary tensioning construction
And (3) stretching the stay cable to 50% of design strength after the motorway steel main beam 1, the non-motorway steel main beam 2 and the steel truss beam 7 are spliced on site.
(4) Auxiliary construction of bridge deck
Paving and bridge surface guardrails on the construction motor vehicle lane; and (3) paving guardrails on two sides of the non-motor road and a concrete cover plate.
(5) Secondary tensioning construction of stay cable
And after the construction of the auxiliary structure of the bridge deck is finished, the stay cable executes tensioning construction according to the tensioning design value of 100%.
(6) Construction for dismantling support
And after the final tension construction of the stay cables is completed and the line shapes of the main steel girder 1 of the motorway and the main steel girder 2 of the non-motorway accord with the design values, sequentially removing the main span construction trestle and the side span full support.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a deck-type arched bridge in cable-stay steel truss, includes motorway steel girder (1), non-motorway steel girder (2), pylon (3), suspension cable (5), steel truss (7), pylon cushion cap (8), pylon cushion cap straining beam (9), pylon pile foundation (10), sidespan pier (11), sidespan cushion cap (12), sidespan pile foundation (13) and non-motorway steel girder crossbeam (14), its characterized in that: the vehicle lane steel main beam (1) and the non-vehicle lane steel main beam cross beam (14) are connected through the steel truss beam (7), the two ends of the non-vehicle lane steel main beam cross beam (14) are connected with the non-vehicle lane steel main beam (2), the non-vehicle lane steel main beam cross beam (14) is fixedly connected with the bridge tower (3) through the stay cable (5), the bridge tower (3), the vehicle lane steel main beam (1) and the non-vehicle lane steel main beam (2) are arranged in an isolation mode, the bridge tower cross beam (4) is welded among the bridge towers (3), a bridge tower bearing platform (8) is poured at the top of the bridge tower pile foundation (10), a bridge tower bearing platform tie beam (9) is poured on the inner side of the bridge tower bearing platform (8), the bridge tower (3) is welded at the top of the bridge tower bearing platform (8), a side-span pile foundation (12) is poured at the top of the side-span pile foundation (13), and the top of the side span bearing platform (12) is poured with a side span pier (11).
2. The cable-stayed steel truss through arch bridge as claimed in claim 1, wherein: the whole body of the steel main beam (1) of the motor vehicle lane is of a parabolic structure, the bridge deck elevation within the main span range of the steel main beam (1) of the motor vehicle lane is higher than that of the steel main beam (2) of the non-motor vehicle lane, and the bridge deck elevation within the side span range of the steel main beam (1) of the motor vehicle lane is lower than that of the steel main beam (2) of the non-motor vehicle lane.
3. The cable-stayed steel truss through arch bridge as claimed in claim 1, wherein: an upper edge U-shaped rib and a lower edge U-shaped rib are arranged in the main steel beam (1) of the motor way, and an I-shaped rib is arranged in the main steel beam (2) of the non-motor way.
4. The cable-stayed steel truss through arch bridge as claimed in claim 1, wherein: the cross section of a vertical rod of the steel truss girder (7) is of a rectangular hollow structure, an inclined rod of the steel truss girder (7) adopts I-shaped steel, one end of the steel truss girder (7) is welded with a steel main girder (1) of a motor vehicle lane, and the other end of the steel truss girder (7) is welded with a steel main girder cross beam (14) of a non-motor vehicle lane.
5. The cable-stayed steel truss through arch bridge as claimed in claim 1, wherein: galvanized steel wire cables are adopted in stay cable (5), the standard strength of steel wire cables is greater than 1670MPa, stay cable (5) upper end is connected with anchor end steel anchor case, anchor end steel anchor case inlays inside bridge tower (3), stay cable (5) lower extreme is connected with stretch-draw end steel anchor case (6), stretch-draw end steel anchor case (6) with non-motor vehicle lane steel girder crossbeam (14) anchor is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922376497.8U CN211498430U (en) | 2019-12-26 | 2019-12-26 | Stayed-cable steel truss through-center type arch bridge |
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| CN201922376497.8U CN211498430U (en) | 2019-12-26 | 2019-12-26 | Stayed-cable steel truss through-center type arch bridge |
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| CN211498430U true CN211498430U (en) | 2020-09-15 |
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| CN201922376497.8U Active CN211498430U (en) | 2019-12-26 | 2019-12-26 | Stayed-cable steel truss through-center type arch bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512949A (en) * | 2021-05-10 | 2021-10-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Rapid installation method of long-span temporary steel structure bridge |
| CN114575235A (en) * | 2022-04-09 | 2022-06-03 | 中交二公局第五工程有限公司 | Bridge structure with separated people and vehicles |
-
2019
- 2019-12-26 CN CN201922376497.8U patent/CN211498430U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512949A (en) * | 2021-05-10 | 2021-10-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Rapid installation method of long-span temporary steel structure bridge |
| CN114575235A (en) * | 2022-04-09 | 2022-06-03 | 中交二公局第五工程有限公司 | Bridge structure with separated people and vehicles |
| CN114575235B (en) * | 2022-04-09 | 2024-01-26 | 中交二公局第五工程有限公司 | Bridge structure with separated vehicles and people |
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