襄阳汉江三桥主桥设计关键技术  

Key Design Technology of the Main Bridge of Xiangyang Hanjiang Third Bridge

作　　者：袁任重[1] 张铭[1] 廖原[1] 张明金[1] 

机构地区：[1]湖北省交通规划设计院,武汉430051

出　　处：《交通科技》2012年第5期23-26,共4页Transportation Science & Technology

摘　　要：针对襄阳汉江三桥主桥索塔采用无上横梁双直立索塔,主梁在索塔处设置紧缩段及顶板纵向设置加劲矮肋的特点,通过ANSYS有限元计算程序对索塔的横向稳定性、主梁紧缩段传力、设置纵向加劲矮肋后主梁应力分布特性等进行分析。Pairs of upright pylons without top beam are used in the main pylon of the Main Bridge of Xiangyang Hanjiang Third Bridge.A tightening segment is set for the main beam in the cable pylon place and longitudinal short stiffening rib is set in the top deck of main beam.By using the ANSYS software,lateral stability of the pylon,force transfer mechanism of the tightening segment and the stress distribution of main beam were analyzed.

关 键 词：斜拉桥 桥塔 主梁 紧缩段 加劲矮肋 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]