Separated double-layer bridge-floor cable stayed bridge

A cable-stayed bridge and separate technology, applied in the field of separate double-deck cable-stayed bridges, can solve problems such as being unsuitable for highway driving, driving vision and comfort effects, achieve good landscape effects, and facilitate operation management and maintenance. Maintenance, bridge structure novel effect

Active Publication Date: 2008-07-09
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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Problems solved by technology

From the perspective of driving vision, the driving on the upper deck is the same as that of conventional bridges, but the driving on the lower deck is limited by the steel truss girder web or the concrete box girder w

Method used

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  • Separated double-layer bridge-floor cable stayed bridge
  • Separated double-layer bridge-floor cable stayed bridge

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and background engineering example the utility model is described in detail.

[0016] The steel truss girder is the basic structural form of the reasonable structure of the double-deck bridge. The upper and lower chords are respectively arranged on the bridge deck. By choosing a reasonable bridge deck structure form, the upper and lower deck structures can participate in the overall stress of the main truss. The scheme based on the steel truss girder structure has the advantages of limited rod size, light structure weight, and light lifting weight, but its disadvantages are also obvious: there are many types of rods and nodes, and it is not easy to manufacture; the lower bridge deck has poor permeability; Anti-corrosion, maintenance and repair are difficult; the project investment scale is large; the landscape is similar to a railway bridge. In view of the shortcomings of the steel truss girder scheme, a central single-cab...

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Abstract

The invention relates to a separate double-deck cable-stayed bridge, which is characterized by comprising an upper layer of main girders, a lower layer of main girders, a main tower simultaneously connected to the upper layer and the lower layer of main girders and a main tower foundation under the main tower, wherein the upper layer of main girders is provided with an upper layer of the bridge surface, the lower layer of main girders is provided with a lower layer of the bridge surface, the upper layer or the lower layer of main girders are respectively provided with stay cables to connect to the main tower. The upper layer and the lower layer of main girders respectively adopt steel box girders, concrete box girders or composite girders according to needs, which reduces steel usage quantity, obtains good sight line of the lower layer of the bridge surface, avoids the steel girder bars disturbance on the driving sight line, and facilitates the operation management and maintenance. The invention provides a double-deck bridge design which is totally different from the steel girder stiffening system, has high application value in aspects of utility, economy, bridge appearance, driving comfort and the like, and has potential application for future projects of the same kind.

Description

Technical field: [0001] The invention relates to the field of bridge scheme design of bridges, in particular to a separate double-deck cable-stayed bridge. Background technique: [0002] Double-layer (deck) bridges are relatively rare in China, and there are few in the world; of course, the small-span double-layer bridges that are common in viaducts are not included. In the early days, the double-layer bridges in my country were basically road and railway bridges across the Yangtze River. Around 2000, some double-layer roads or double-layer bridges with upper roads and lower layers running urban rail transit were built. my country's representative double-deck bridges are shown in the table below: [0003] Preface No bridge name bridge scheme Main beam structure load Maximum span diameter 1 Wuhan Yangtze River bridge continuous beam steel t...

Claims

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Application Information

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IPC IPC(8): E01D11/04
Inventor 颜爱华邓青儿邵长宇孔德军盛勇
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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