摘要
某双向六车道高速公路桥梁位于长纵坡、高桥隧比的连续隧道群上,受地形限制需在桥梁上增设紧急停车带。经论证后桥梁宽度需由16 m增加至25.45 m。由于桥梁两端均为特长隧道,为减小光线给行车带来的视线差的问题,保证行车安全,同时减小雨雪对公路桥梁的危害,需在桥上护栏上设置防雪遮光棚。综合考虑了防雪棚和遮光结构的功能特点,为解决桥宽较宽问题,对桥梁防雪遮光棚进行了方案研究。在以往学者研究的基础上,对桥梁防雪遮光棚设计进行了研究分析,研究成果主要包括防雪遮光棚的断面组成、钢结构设计、遮光板设计、风压处理等,通过结构验算,提出了合理安全的设计方案,期望能够为其他类似工程提供参考。
A dual 3-lanes expressway bridge is located on a continuous tunnel group with long longitudinal slope and high bridge tunnel ratio.Due to terrain limitations,an emergency parking lot needs to be added to the bridge.After demonstration,the width of the bridge needs to be increased from 16 m to 25.45 m.Due to the fact that both ends of the bridge are extra long tunnels,in order to reduce the line of sight caused by light,ensure driving safety,and reduce the harm of rain and snow to the highway bridge,it is necessary to install snow proof and shading sheds on the guardrails on the bridge.The functional characteristics of snow proof sheds and shading structures are comprehensively considered.In order to solve the problem of wide bridge width,a scheme study Is conducted on bridge snow proof and shading sheds.On the basis of previous research by scholars,research and analysis on the design of bridge snow proof and shading sheds are carried out.The research results mainly include the section composition,steel structure design,shading plate design,wind pressure treatment,etc.Through structural verification,a reasonable and safe design scheme is proposed,hoping to provide reference for other similar projects.
作者
孟志军
杨根源
林永楷
MENG Zhi-jun;YANG Gen-yuan;LIN Yong-kai(Shanxi Lixi Expressway Co.Ltd.,Lyuliang 033400,China;CCCC First Highway Consultants Co.Ltd.,Xi'an 710075,China)
出处
《公路》
北大核心
2025年第1期205-209,共5页
Highway
关键词
防雪遮光棚
钢结构设计
遮光板
风压处理
结构验算
snow proof and shading shed
steel structure design
light shielding board
wind pressure treatment
structural verification
