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Streamlined main girder structure

A streamlined, main girder technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as poor aerodynamic performance, ability to ensure driving safety cannot meet the needs of use, etc., to achieve reliable driving safety, large vertical and horizontal bending resistance And torsional modulus, the effect of improving driving conditions

Inactive Publication Date: 2013-11-20
苏传海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To overcome the deficiencies of the existing technologies, the problems that need to be solved are: the aerodynamic performance of the actual shape of the bridge during the operation stage is poor; demand problem

Method used

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Embodiment Construction

[0023] Example reference figure 1 , figure 2 As shown, a highway suspension bridge adopts a ship-shaped steel box girder 1 as the load-bearing main girder, and the upper cover mainly includes the air guide cover of the bracket 5, the membrane body 5 and the clamp system 7, and the sides of the steel box girder 1 and the air guide cover Smooth butt joint, the cross-sectional outline of the formed streamlined main girder is a round end shape, the main body of the crosswind of the bridge flows around the round end shape, and a small part is guided from the air through the small structural gaps on the edge of the air guide cover membrane inside the hood.

[0024] The air shroud is composed of several membrane structural units arranged and connected longitudinally along the bridge, such as figure 2 As shown, the membrane structural unit includes a support 5 , a membrane body 6 and a clamp system 7 . Ship-shaped steel box girder 1 is elastically supported by sling 4 , and sling...

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Abstract

The invention discloses a tunnel type main girder with a streamlined aerodynamic appearance. Bridge floor driving vehicles are isolated from a severe storm, so that the aerodynamic appearance of a bridge in an operation state is free from influences of factors such as wind break, a guardrail, a vehicle appearance and a distribution state; the ideal aerodynamic appearance is kept all the time; and the problems that the practical aerodynamic performance of the bridge in the operation state is poor, and the safety guarantee of the driving vehicles on the bridge during strong wind is ineffective are solved. In addition, a driving condition can be improved significantly; a gradient temperature load caused by solar radiation can be reduced; the durability of a main structure can be improved; and the predictability of the wind resistance of the bridge can be improved. The tunnel type main girder adopts a unitized and modularized membrane structure which is high in strength, corrosion-resistant, ultraviolet-resistant, light in deadweight, fire-proof, fire-retardant, good in self-cleaning, better in light transmittance and lower in cost. The tunnel type main girder is high in factory degree, convenient to mount, sound-proof, and good in landscape effect, is suitable for a large bridge structure in a strong wind area, and can be used for a municipal bridge, and a color membrane structure can be adopted, so that people cannot forget at a glance.

Description

technical field [0001] The invention relates to bridges, in particular to a composite main girder structure. Background technique [0002] When a vehicle is driving on a bridge in a strong wind area, the crosswind may affect the driving safety of the vehicle and even cause a serious accident. Setting up windproof systems on bridges in strong wind areas is one of the effective ways to solve the above problems. Existing wind protection systems for driving on bridges mainly set up wind barriers on both sides of the roadway, such as the British Severn Bridge, the Second Severn Bridge, Hong Kong Tsing Ma Bridge and other bridges have adopted the wind barrier technology. [0003] After the wind-induced damage accident of the Tacoma Bridge in Washington State, USA in 1940, the problem of wind resistance of flexible bridge structures was paid more attention, and many researches and innovations were carried out in the industry. The existing wind-resistant technologies for bridges m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00
Inventor 苏传海
Owner 苏传海
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