连盐铁路黄沙港特大桥主桥下部结构设计  

The Design of Substructure of Huangshagang Bridge on Lianyungang- Yancheng Railway

作　　者：王勇 

机构地区：[1]中铁第五勘察设计院集团有限公司桥梁设计院,北京102600

出　　处：《铁道标准设计》2015年第1期70-73,共4页Railway Standard Design

摘　　要：黄沙港特大桥是新建连盐铁路跨越黄沙港的一座双线特大桥,主桥采用(60+100+60)m预应力混凝土连续梁,受行洪影响,位于河道中的主墩采用圆形墩。针对圆墩顶帽悬臂短及承台为薄八边形台体的结构特点,分别用牛腿法及"撑杆-系杆体系"对结构进行设计计算,并对桥梁下部结构形式及设计要点进行阐述,简要介绍主墩基础施工方案。Huangshagang bridge which uses （60＋100＋60） m prestressed concrete continuous beam is a double-track bridge on Lianyungang-Yancheng railway, and its main piers are in round shape for flood discharge. In view of the characteristics of short cantilevered cap and thin-octagonal bearing platform, the structures are calculated respectively with bracket and combines strut-tie theory. The structural types and design fundamentals of the substructure of this bridge are illustrated and the construction of the foundation is introduced briefly.

关 键 词：双线铁路桥 下部结构 圆墩 悬臂顶帽 基础 设计 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]