西成铁路东平站大跨度桥梁半封闭声屏障设计方案研究  

Study on Design Scheme of Semi-closed Sound Barrier for Long-span Bridge in Dongping Station of Xining-Chengdu Railway

作　　者：朱玮杰 ZHU Weijie(Environment and Equipment Research Institute,China Railway First Survey and Design Institute Group Co.,Ltd,Xi’an Shaanxi 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司环境与设备设计院,陕西西安710043

出　　处：《铁路节能环保与安全卫生》2023年第5期1-6,47,共7页Railway Energy Saving & Environmental Protection & Occupational Safety and Health

摘　　要：封闭式或半封闭式声屏障具有良好的降噪效果,越来越多的应用于铁路和各类轨道交通项目中。以西成铁路东平站大跨度桥梁站区半封闭式声屏障设计为例,针对其具有的结构跨度大、专业接口多、外部条件复杂等特点,对声屏障总体设计方案、结构设计方案、辅助设计方案等进行研究,提出半封闭声屏障采取三线大跨度设计方案,结构形式采用门式框架,吸声板采用外敷式,并考虑当地环境特点开展防风、排水和防雪等辅助设计,以保证铁路安全运营。Closed or semi-closed noise barrier has good noise reduction effect,it is more and more used in railway and various rail transit projects.Taking the design of semi-enclosed sound barrier in the long-span bridge station area of Dongping Station of Xining-Chengdu Railway as an example,aiming at its characteristics such as large structural span,many professional interfaces and complex external conditions,this paper studies the overall design scheme,structural design scheme and auxiliary design scheme of sound barrier,and puts forward that the semi-enclosed sound barrier should adopt three-line long-span design scheme,with portal frame structure and external application of sound absorption board,and carry out auxiliary design such as wind protection,drainage and snow protection considering local environmental characteristics to ensure the safe operation of the railway.

关 键 词：半封闭式声屏障 大跨度桥梁 降噪 

分 类 号：U213.8[交通运输工程—道路与铁道工程]