摘要
结合在建城际铁路桥梁设置全封闭声屏障方案的研究,从减噪性能、防腐性能、几何适应性、抗风稳定性、景观效果等各方面综合分析备选方案,确定全封闭声屏障为推荐方案。全封闭声屏障受列车气动力和风荷载共同作用,声屏障受到的荷载通过声屏障立柱作用到桥梁结构。分析增设全封闭声屏障对桥梁设计荷载、梁体纵向受力、梁体翼缘板受力、梁体支反力、梁体抗倾覆稳定性、桥梁下部结构受力等的影响,并提出相应的解决方案以及外覆式全封闭声屏障的运营养护措施建议。
According to the research on the scheme of setting fully-enclosed sound barrier for intercity railway bridge under construction,the alternatives were synthesized from noise reduction performance,anti-corrosion performance,geometric adaptability,wind-resistant stability and landscape effect,etc.,and the fully-enclosed sound barrier was determined as the recommended solution.The fully-enclosed sound barrier is jointly affected by the aerodynamic force of trains and wind load,and the load suffered by the sound barrier acts on the bridge structure through the sound barrier column.This paper analyzes the influence of fully-enclosed sound barrier on bridge structure,longitudinal stress of beam body,stress of flange plate of beam body,bearing reaction of beam body,anti-overturning stability of beam body and stress of bridge substructure,and puts forward corresponding solutions and suggestions on the operation and maintenance measures of the fully-enclosed sound barrier.
作者
陈刚
CHEN Gang(China Railway First Survey&Design Institute Group Co Ltd,Xi'an Shaanxi 710043,China)
出处
《中国铁路》
2020年第9期82-87,共6页
China Railway
关键词
城际铁路
桥梁
全封闭声屏障
养护措施
intercity railway
bridge
fully-enclosed sound barrier
maintenance measures
