【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。更多还原

【Abstract】 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.更多还原