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中国公路学报
CHINA JOURNAL OF HIGHWAY AND TRANSPORT
2006 Vol.19 No.5 P.41-45

数字化期刊

混凝土桥梁结构非线性地震损伤演化

邵长江  吴永红  钱永久 

摘 要:采用基于断裂能的损伤变量表达式,以单位体积材料当前耗能与断裂能的比值定义损伤变量,考虑了混凝土的拉压异性效应.引入了地震损伤的整体演化指标,通过有限元方法利用材料塑性损伤模型模拟桥梁结构在地震激励下的非线性损伤演化过程.数值计算过程中考虑了混凝土后继屈服的随动强化效应,采用损伤型本构关系及相应的Drucker-Prager型屈服函数,并通过算例验证了混凝土结构的非线性地震损伤特性.
关键词:桥梁工程;地震损伤;有限元方法;损伤指数;屈服函数;随动强化;损伤本构关系
分类号:U442.55  文献标识码:A

文章编号:1001-7372(2006)05-0041-05

Evolution of Nonlinear Seismic Damage of Concrete Bridge Structure

SHAO Chang-jiang  WU Yong-hong  QIAN Yong-jiu 

基金项目:国家自然科学基金重点项目(50539010)
作者简介:邵长江(1970-),男,山东临沂人,工学博士研究生,E-mail:shao_chj@126.com.
作者单位:邵长江(西南交通大学,土木工程学院,四川,成都,610031) 
     吴永红(河海大学,水利水电工程学院,江苏,南京,210098) 
     钱永久(西南交通大学,土木工程学院,四川,成都,610031) 

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收稿日期:2006年1月18日

出版日期:2006年9月30日