摘要
轨道交通大兴机场线高架区间长16.2 km,其中7.9 km为路-轨共构结构。共构结构体系为四层立体布置,最上层为大兴机场高速公路,中间层为大兴国际机场线,地面层为团河路,布置于桥墩外侧,两桥墩承台基础之间,地面以下设置综合管廊。根据高速公路设计要求、出入共构段线路布置和立交匝道布置的需要,共构结构桥墩分为双墩柱、三墩柱和四墩柱三种形式。共构结构体系可以节约土地,提高土地综合利用率。以大兴机场线共构段设计为例,介绍共构结构体系的确定、共构断面的确定、设计规范选取,对共构结构桥墩(双墩柱和四墩柱)形式进行研究。
The elevated area of Daxing Airport Line in the rail traffic is 16.2 km long,in which the co-structure of road and rail is 7.9 km long.The co-structure system is the four-floor three-dimensional layout.Its top floor is Daxing Airport Expressway,the middle floor is Daxing International Airport Line and the ground floor is Tuanhe Road,which is arranged at the outside of piers and between the base slab foundations of two piers,and the utility tunnel is arranged below the ground.According to the demands of expressway design,co-structural line layout and interchange ramp layout,the co-structural piers are divided into three types of double-pier column,three-pier column and four-pier column.The co-structural system can save the land and improve the comprehensive utilization rate of land.Taking the design of co-structural section of Daxing Airport Line as an example,the determination of co-structural system,the determination of co-structural section and the selection of design standard are introduced.The types of co-structural pier(double-pier column and four-pier column)are studied.
作者
张付宾
李圣强
ZHANG Fubin;LI Shengqiang
出处
《城市道桥与防洪》
2022年第2期68-72,81,M0008,共7页
Urban Roads Bridges & Flood Control
关键词
共构体系
共构断面
设计规范
结构研究
共构桥墩
co-structural system
co-structural section
design standard
structural study
co-structural pier
