摘要
为了评估钢筋混凝土桥墩的极限水平位移,根据塑性铰区变形特性,合理确定塑性铰区长度是非常重要的。本文基于有限元分析,从理论上给出了桥墩根部纵筋失稳时的长度,并与实验结果进行了比较。通过纵筋失稳分析结果,提出了考虑到材料非线性时桥墩纵筋失稳长度的简化表达式。
In order to assess the ultimate displacement of reinforced concrete bridge pier, it is very important reasonably to determine the plastic hinge length based on the deformation characteristics in plastic hinge region. This paper presents the analytical studies on buckling of longitudinal reinforcement in columns with the use of the FEM analyses and compares the theoretical buckling length with that obtained from the column loading tests. Furthermore, based on the analytical studies the simplified procedure for assessing the buckling length of longitudinal reinforcement is proposed with taking account of the inelastic behavior?
出处
《建筑科学》
2004年第2期20-23,共4页
Building Science
关键词
钢筋混凝土
桥墩
纵向钢筋
非线性
失稳长度
塑性铰区长度
reinforced concrete bridge pier
longitudinal reinforcement
buckling length
plastic hinge length
