Semi-enclosed wind-shielding structure of high-speed railway segmented trough beam

A technology of high-speed railways and channel beams, applied in construction, protective equipment, etc., can solve problems such as difficulty in ensuring train safety, achieve obvious wind-shielding effects, meet anchoring requirements, and achieve high safety effects

Active Publication Date: 2017-01-11
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the windshield structure is damaged, the safety of the train will be difficult to guarantee under strong cross winds

Method used

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  • Semi-enclosed wind-shielding structure of high-speed railway segmented trough beam
  • Semi-enclosed wind-shielding structure of high-speed railway segmented trough beam
  • Semi-enclosed wind-shielding structure of high-speed railway segmented trough beam

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Embodiment Construction

[0028] The present invention will be described in detail below in combination with specific embodiments.

[0029] The invention proposes a brand-new high-speed railway wind-shielding structure form, and the high-speed railway sliced ​​channel beam semi-closed wind-shielding structure. For the first time, the concept of combining the beam body with the wind-shielding function and the wind-shielding structure in the core area of ​​the strong wind was proposed, and the groove-shaped beam was applied to the high-speed railway bridge project for the first time. The windshield structure provides a new option.

[0030] It involves a semi-closed windshield structure of segmented channel beams for high-speed railways, including multi-channel arches 1 arranged at longitudinal intervals and spanning the webs at the left and right ends of channel beams 2, which are H-shaped steels formed by splicing. The bottom surface of the arch frame 1 is provided with a base plate 12, and the base pl...

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Abstract

The invention relates to a high-speed rail piece type channel beam semi-closed wind shielding structure. The existing ordinary-speed rail bridge wind shielding measures cannot satisfy a windproof requirement of a high-speed rail bridge in a strong wind area. The high-speed rail piece type channel beam semi-closed wind shielding structure comprises a plurality of arch frames which are longitudinally arranged with intervals and cross webs at two ends of a channel beam; wind shielding plates are connected to lower portions of the two longitudinally adjacent arch frames; upper portions of the wind shielding plates are provided with wind shielding plates opening holes which separate the arch frames into framework sections, opening hole sections and hole-free sections from top to bottom. The high-speed rail piece type channel beam semi-closed wind shielding structure is formed by the channel beam, the arch frames and the wind shielding plates, the beam webs and the wind shielding structures on the beam webs commonly play a role in proofing cross wind, the cross wind function acting on a train body is changed, the critical wind speed for train safe operation is improved, meanwhile the height of a wind shield is higher than that of a contact line of an overhead line system, influences to the overhead line system from the strong wind are reduced, the train operation stability is increased, and the operation fault is reduced.

Description

technical field [0001] The invention belongs to the technical field of high-speed railway wind protection, and in particular relates to a semi-closed wind protection structure of a piece-shaped groove beam for high-speed railways. Background technique [0002] The Baili wind area in Xinjiang is one of the most severe railway wind disasters in my country and even in the world. Existing railways have experienced speed limit and stoppages many times, and there have even been major accidents in which trains were overturned by strong winds, causing serious damage to railway transportation and production. significant loss. For the Bailifeng area, due to harsh construction conditions, extreme drought and water shortage, it is impossible to set up a beam yard, and the prefabricated erection of the existing high-speed railway box girder cannot be realized. A new beam type is needed to solve this problem. At the same time, most of the existing theoretical studies and technical measur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F7/02
CPCE01F7/025
Inventor 何涛赵会东张鹏俞萍徐永利吴少海
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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