Innovative Design and Development of Simplysupported Tied Arch of Beijing-Shanghai HSR  

作　　者：WU Mengchang WEN Wangqing XU Sanping 

机构地区：[1]China Railway Construction Bridge Design and Research Branch,China Railway SIYUAN Survey and Design Group Co.Ltd. [2]Bridge Engineering Laboratory of China Railway Construction Corporation Limited,China Railway SIYUAN Survey and Design Group Co.Ltd.

出　　处：《Chinese Railways》2022年第2期60-68,共9页中国铁路（英文版）

摘　　要：Simply-supported tied arch is a zero-thrust arch bridge with clear structural force,large stiffness,low height,beautiful appearance and economic efficiency.In Xuzhou-Shanghai section of Beijing-Shanghai HSR,the simply-supported tied arch is systematically studied and widely applied for the first time.A total of 21 simplysupported tied arch bridges with the spans of 96 m,112 m and 128 m respectively are constructed for the route.The simply-supported tied arch is an external static and internal super-static parallel arch or basket arch of Nielsen system in structure;single-box,threechamber and equal-height prestressed concrete box girder is adopted for the tie beam;dumbbell steel pipe concrete section is adopted for the arch rib;PES(FD)low-stress anticorrosion cable body is adopted for the suspender.The rational structural form is determined by comparative study on the key technical parameters such as the layout form of suspender,rise-span ratio and arch axis alignment.This paper summarizes the optimization of simplysupported tied arch structure and looks forward to the development of bridge structure.

关 键 词：Beijing-Shanghai HSR simply-supported tied arch tie beam arch rib SUSPENDER arch foot cross bracing key technical parameters 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]