摘要
根据京沈客运专线全封闭声屏障工程主体跨度大、临近既有线施工及组织复杂、工期紧等特点,对声屏障声学、景观、结构、接口、施工设计等开展研究。声屏障主体结构为混凝土拱形框架结构,拱间铺设预制混凝土薄壳,沿轨道方向拱距6 m,垂直轨道方向跨度40~80 m,最大无柱跨度40 m。混凝土拱脚基础采用重力式条形基础,中柱采用桩基础。声屏障接口设计中考虑接触网悬挂、通信、照明、防雷接地、疏散维修等需求。结合施工组织、既有线及建筑物拆迁,声屏障拱脚基坑防护分别采用土钉墙或桩+内支撑的支护体系。
According to the characteristics of the sound barrier project of Beijing-Shenyang Passenger Dedicated Line,such as large main span,complex construction and organization and short construction period,the acoustics,landscape,structure,interface and construction design of the sound barrier are studied.The main structure of the sound barrier is a concrete arch frame structure with precast concrete thin shells laid between the arches,with an arch distance of 6 m along the track direction,a span of 40~80 m in the vertical track direction and a maximum span of 40 m without columns.Gravity strip foundation is adopted for concrete arch foot foundation,and pile foundation is adopted for center column.The requirements of catenary suspension,communication,lighting,lightning protection and grounding,evacuation and maintenance are considered in the design of sound barrier interface.Combined with construction organization,existing railway and building demolition,soil nailing wall or pile with internal support system is adopted for foundation pit protection of sound barrier arch foot.
作者
党辉
DANG Hui(Designing and Research Institute of Mechanical Power and Environmental Engineering,China Railway Design Group Co.,Ltd.,Tianjin 300308,China)
出处
《铁路节能环保与安全卫生》
2020年第4期8-12,共5页
Railway Energy Saving & Environmental Protection & Occupational Safety and Health
关键词
全封闭声屏障
景观设计
主体结构
接口设计
防护设计
Totally-enclosed sound barrier
Landscape design
Main structure
Interface design
Protective design
