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High-speed railway bridge wind blocking structure

A technology for high-speed railways and bridges, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of wind-shielding structure height, opening ratio, wind-shielding effect columns and connection safety that cannot meet the operation requirements of high-speed railways, and achieve Good durability, strong applicability, and convenient maintenance

Active Publication Date: 2015-03-04
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-speed railway trains are fast, have light axle loads, and have much greater aerodynamic force than normal-speed railway trains. Crosswind effects have a greater impact on train aerodynamic forces. The safety of columns and connections cannot meet the operating requirements of high-speed railways

Method used

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  • High-speed railway bridge wind blocking structure
  • High-speed railway bridge wind blocking structure
  • High-speed railway bridge wind blocking structure

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Embodiment Construction

[0043] The present invention will be described in detail below in combination with specific embodiments.

[0044] The present invention proposes a brand-new bridge wind-shielding structure. Under the premise of satisfying the safety of the bridge structure and the wind-shielding structure, by setting the wind-shielding structure to change the crosswind effect on the car body, the safety of train operation is improved. The critical wind speed increases the stability of train operation and reduces operational failures, thereby providing a favorable guarantee for trains passing safely on bridges in windy areas.

[0045] The involved windshield structure of a high-speed railway bridge is suitable for bridge structures of box girders and composite T girders, installed on the windward side of the bridge girder, and includes a column 1, a bent column 2 and a windshield 5.

[0046] The column 1 and the bent column 2 are both H-shaped steel (the cross-section is divided into H250×250×9...

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Abstract

The invention relates to a high-speed railway bridge wind blocking structure. An existing common-speed railway bridge wind prevention measure cannot meet the wind prevention requirement of a strong wind area high-speed railway bridge. The high-speed railway bridge wind blocking structure comprises vertical columns, a bent vertical column and a wind blocking plate, the vertical columns and the bent vertical column are vertically and fixedly spliced, the upper portion of the bent vertical column is vertical, the lower portion of the bent vertical column is bent towards a central line of a bridge body, the vertical portion of the upper portion of the bent vertical column is fixed at a flange of the bridge body, the bottom end is fixed to a box beam web or T-shaped beam horseshoe, the wind blocking plate is fixed between the longitudinally adjacent vertical columns, and a wind blocking plate hole is formed in the wind blocking plate. Safety of a bridge structure and the wind blocking structure is met, cross air acting on a train body is changed by the wind blocking structure, the critical wind speed of train safety operation is improved, train operation stability is improved, and operation faults are decreased.

Description

technical field [0001] The invention belongs to the technical field of high-speed railway wind protection, and in particular relates to a high-speed railway bridge wind protection structure. Background technique [0002] my country's Xinjiang railway wind area has high wind speed, long wind season, strong seasonality, and fast change speed. The sudden strong wind is very destructive. Among them, the hundred-mile wind area and the thirty-mile wind area are one of the most severe railway wind disasters in my country and even in the world. Over the years, there have been many accidents in which trains were blown over by strong winds, which brought huge economic losses and serious social impacts to railway transportation and production. [0003] Existing studies are mostly conducted on low-speed vehicles, and there are relatively few studies on medium and high-speed trains. There are existing windproof measures for normal-speed railway bridges, which adopt a separate bridge t...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D19/10
CPCE01D19/00E01F7/025
Inventor 赵会东何涛徐永利吴少海张鹏俞萍王昌鹏
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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