CN107829361B - Single-piece variable-height truss stiffening composite beam bridge - Google Patents
Single-piece variable-height truss stiffening composite beam bridge Download PDFInfo
- Publication number
- CN107829361B CN107829361B CN201710904680.3A CN201710904680A CN107829361B CN 107829361 B CN107829361 B CN 107829361B CN 201710904680 A CN201710904680 A CN 201710904680A CN 107829361 B CN107829361 B CN 107829361B
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- bottom plate
- plate
- outer side
- truss
- top plate
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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
- E01D6/00—Truss-type 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a single-piece heightening truss stiffening combined girder bridge which comprises a heightening steel truss and a combined girder, wherein the combined girder comprises a bottom plate, outer side webs, inner side webs and a top plate, the outer side webs are arranged at two ends of the bottom plate, the two outer side webs are obliquely arranged relative to the bottom plate, flanges are arranged at the upper ends of the two outer side webs, the top plate is arranged between the two flanges, a cavity is formed among the top plate, the bottom plate and the two outer side webs, the two inner side webs are symmetrically arranged in the cavity, and two ends of each inner side web are fixedly connected with the top plate and the bottom plate respectively. The single-piece variable-height truss stiffening combined beam bridge is light in shape, attractive, low in later maintenance cost, capable of saving construction cost and wide in application space.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a single-piece variable-height truss stiffening composite beam bridge.
Background
the girder bridge uses the girder which mainly bends as a bearing component, the girder can be a solid web girder or a truss girder, the solid web girder has simple structure, is convenient to manufacture, erect and maintain, is widely used for medium and small span bridges, but is not economical enough in material utilization, a member of the truss girder bears the axial force, the material can be fully utilized, the dead weight is light, the spanning capability is large, the girder bridge is mainly used for building large span bridges, and the girder bridge is divided into a simple girder bridge, a continuous girder bridge and a cantilever girder bridge according to a static force system of the girder. However, the existing bridge does not adopt a precedent of adopting a structural form of a monolithic heightening truss stiffening combined beam bridge, and flexible stiffening modes such as a single-cable-plane cable-stayed bridge scheme and the like are usually adopted at the present stage when the crossing property of a main beam needs to be increased and the beam height needs to be reduced, so that the single-cable-plane cable-stayed bridge has the advantages of smaller overall rigidity, more complex technology, high construction cost, higher construction difficulty and more later-stage maintenance cost.
Disclosure of Invention
The invention aims to solve the problems that a single-cable-plane cable-stayed bridge in the prior art is relatively low in overall rigidity, complex in technology, high in construction cost, high in construction difficulty and high in later maintenance cost, and provides a single-piece heightening-truss stiffening composite beam bridge.
In order to achieve the purpose, the invention adopts the following technical scheme:
The utility model provides a monolithic becomes purlin stiffening combination girder bridge, includes to uprise steel purlin and combination girder, the combination girder includes bottom plate, outside web, inboard web and roof, the both ends of bottom plate all are equipped with the outside web, two the relative bottom plate of outside web is the slope setting, two the upper end of outside web all is equipped with the edge of a wing, two be equipped with the roof between the edge of a wing, vacuole formation between roof, bottom plate and two outside webs, the symmetry is equipped with two inboard webs in the cavity, the both ends of inboard web respectively with roof, bottom plate fixed connection.
preferably, the section of the main beam is formed by combining concrete and steel to form a W-shaped section.
Preferably, the top plate is an orthotropic plate.
Preferably, the inner web is a corrugated steel web.
Preferably, the bottom plate, the outer side web plate and the flange are all of a concrete structure.
Preferably, the high steel truss is designed into a zigzag dragon shape.
In the invention, the single-piece heightening truss stiffening composite girder bridge structure adopts heightening steel trusses for stiffening, can effectively reduce the girder height and increase the span adaptability of the girder type, and simultaneously adopts heightening steel trusses for stiffening, which is a rigid stiffening cable-stayed bridge, has better structural rigidity, can design the heightening steel trusses into a zigzag dragon shape according to the landscape requirement, has beautiful shape and good landscape effect, the section of the girder adopts a concrete and steel combined W-shaped section, for the section of the single-piece stiffening steel truss, the section of the girder is stressed, so that a top plate and an inner side tension web plate are stressed, an outer side web plate and a bottom plate are stressed, the tensioned part of the top plate adopts an orthotropic plate, the inner side web plate adopts a corrugated steel web plate, and for the stressed area still adopts a concrete structure, the design gives full play to the stress characteristics of different materials, avoids the complicated pre-stressed rib configuration of the tensioned area of the concrete girder, simplifies the design, and further reduces the dead weight of the main beam structure. The single-piece variable-height truss stiffening combined beam bridge is light in shape, attractive, low in later maintenance cost, capable of saving construction cost and wide in application space.
Drawings
FIG. 1 is a schematic structural view of a monolithic stiffening girder bridge according to the present invention;
Fig. 2 is a schematic elevation structure view of a single-piece stiffening composite girder bridge with a high truss according to the present invention.
In the figure: 1 high-height steel truss, 2 top plates, 3 inner webs, 4 bottom plates, 5 outer webs and 6 flanges.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
referring to fig. 1-2, a single-piece stiffening composite girder bridge with high-height trusses, comprising a high-height steel truss 1 and a composite girder, wherein the high-height steel truss 1 is stiffened, and the composite girder is a single-cable-plane cable-stayed bridge, and belongs to rigid stiffening, has better structural rigidity, can effectively reduce the height of the girder, and increases the span adaptability of the girder type, the composite girder comprises a bottom plate 4, an outer web 5, an inner web 3 and a top plate 2, the two ends of the bottom plate 4 are respectively provided with the outer web 5, the two outer webs 5 are obliquely arranged relative to the bottom plate 4, the upper ends of the two outer webs 5 are respectively provided with a flange 6, the top plate 2 is arranged between the two flanges 6, a cavity is formed between the top plate 2, the bottom plate 4 and the two outer webs 5, two inner webs 3 are symmetrically arranged in the cavity, the two ends of the inner webs 3 are respectively fixedly connected with the top plate 2 and the bottom plate 4, and, the outer side web 5 and the bottom plate 4 are pressed, the tensile part of the top plate 2 adopts an orthotropic plate, the inner side web 3 adopts a corrugated steel web, and the compression area still adopts a concrete structure.
According to the invention, the section of the main beam is formed by combining concrete and steel to form a W-shaped section, the top plate 2 is an orthotropic plate, the inner web 3 is a corrugated steel web, the bottom plate 4, the outer web 5 and the flange 6 are of concrete structures, and the heightening steel truss 1 is designed to be in a spiral dragon shape, so that the shape is beautiful and the landscape effect is good.
In the invention, the single-piece heightening truss stiffening composite girder bridge structure adopts heightening steel trusses 1 for stiffening, which can effectively reduce the girder height and increase the span adaptability of the girder type, and adopts heightening steel trusses 1 for stiffening, which is a rigid stiffening cable-stayed bridge, has better structural rigidity, and the heightening steel trusses 1 can be designed into a spiral dragon shape according to the landscape requirement, has beautiful shape and good landscape effect, the section of the girder adopts a W-shaped section formed by combining concrete and steel, for the section of the single-piece stiffening steel truss, the section is stressed, so that a top plate 2 and an inner web 3 are tensioned, an outer web 5 and a bottom plate 4 are stressed, the tensioned part of the top plate 2 adopts an orthotropic plate, the inner web 3 adopts a corrugated steel web, and the stressed area of the girder still adopts a concrete structure, the design fully exerts the stress characteristics of different materials, and avoids the complicated prestressed rib configuration of the tensioned area of the concrete, the design is simplified, and the dead weight of the main beam structure is further reduced. The single-piece variable-height truss stiffening combined beam bridge is light in shape, attractive, low in later maintenance cost, capable of saving construction cost and wide in application space.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A single-piece heightening truss stiffening composite girder bridge comprises a heightening steel truss (1) and a composite girder, it is characterized in that the variable-height steel truss (1) is arranged on the combined main beam, the combined main beam comprises a bottom plate (4), an outer side web plate (5), an inner side web plate (3) and a top plate (2), outer side webs (5) are arranged at two ends of the bottom plate (4), the two outer side webs (5) are obliquely arranged relative to the bottom plate (4), flanges (6) are arranged at the upper ends of the two outer side webs (5), a top plate (2) is arranged between the two flanges (6), a cavity is formed among the top plate (2), the bottom plate (4) and the two outer side webs (5), two inner side webs (3) are symmetrically arranged in the cavity, and two ends of each inner side web (3) are fixedly connected with the top plate (2) and the bottom plate (4) respectively;
Wherein the top plate (2) adopts an orthotropic plate; the inner side web plate (3) is a corrugated steel web plate; the bottom plate (4), the outer side web plate (5) and the flanges (6) are all of a concrete structure.
2. A monolithic high truss stiffened composite beam bridge as defined in claim 1 wherein said main beam section is formed of a combination of concrete and steel to form a W-section.
3. A monolithic high truss stiffened composite girder bridge according to claim 1 wherein the high steel truss (1) is designed as a serpentine dragon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710904680.3A CN107829361B (en) | 2017-09-29 | 2017-09-29 | Single-piece variable-height truss stiffening composite beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710904680.3A CN107829361B (en) | 2017-09-29 | 2017-09-29 | Single-piece variable-height truss stiffening composite beam bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107829361A CN107829361A (en) | 2018-03-23 |
| CN107829361B true CN107829361B (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710904680.3A Active CN107829361B (en) | 2017-09-29 | 2017-09-29 | Single-piece variable-height truss stiffening composite beam bridge |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7082707B2 (en) * | 2003-11-17 | 2006-08-01 | Valmont Industries, Inc. | Support truss for a messaging sign |
| CN2808997Y (en) * | 2005-06-22 | 2006-08-23 | 中铁大桥勘测设计院有限公司 | Main girder for cable-stayed bridge on high-speed railway |
| CN104328734A (en) * | 2013-07-22 | 2015-02-04 | 中铁工程设计咨询集团有限公司 | Multi-connection and multi-span continuous steel truss girder bridge and construction method thereof |
| CN104032668B (en) * | 2014-06-13 | 2016-05-18 | 重庆交通大学 | Half-through steel purlin-Combined concrete continuous steel frame bridge |
| CN205999769U (en) * | 2016-08-01 | 2017-03-08 | 中铁第一勘察设计院集团有限公司 | A kind of high-speed railway steel reinforced concrete combines only tower section cable-stayed bridge |
| CN106638271A (en) * | 2016-10-26 | 2017-05-10 | 招商局重庆交通科研设计院有限公司 | Corrugated steel web-fish bone beam composite structure bridge |
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2017
- 2017-09-29 CN CN201710904680.3A patent/CN107829361B/en active Active
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| CN107829361A (en) | 2018-03-23 |
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