重庆菜园坝长江大桥主拱钢-混凝土接头设计  

Design of Steel and Concrete Joint Parts of Main Arch Ring of Caiyuanba Changjiang River Bridge in Chongqing

作　　者：刘安双 任国雷 马振栋 刘雪山 

机构地区：[1]林同棪国际(重庆)工程咨询有限公司,重庆401121

出　　处：《世界桥梁》2006年第4期27-30,共4页World Bridges

摘　　要：针对重庆菜园坝长江大桥混凝土刚构与钢箱拱接头主要为受压构件的特点,采用改进钢板形式进行设计,提出预应力钢筋的设计方法及局部细节设计,确保结构安全可行。通过钢-混凝土接头的强度试验和疲劳试验验证,采用改进钢板形式的设计理念,设计先进、受力明确、结构合理。In the light of the characteristics that the joint parts between the concrete rigidframe structure and steel box arch ring of Caiyuanba Changjiang River Bridge in Chongqing mainly work as the compressive elements, the design of the parts is carried out by means of improving the steel plates, and the design methods and local details design of prestressing steels are put forward in order to ensure the safety of the bridge structure. The verification through the strength and fatigue tests of the steel and concrete joint parts indicates that the design concept used with the improved steel plates is advanced, the structural behavior is clear and the structure itself is rational.

关 键 词：拱桥 组合式系杆 钢-混凝土接头 桥梁设计 

分 类 号：U448.225[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]