| 延性桥墩纵筋失稳长度的简化表达式 |
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| 引用本文： | 李永哲,阎贵平,李运生.延性桥墩纵筋失稳长度的简化表达式[J].北京交通大学学报(自然科学版),2004,28(4):12-15. |
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| 作者姓名： | 李永哲 阎贵平 李运生 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,北京,100044;北京交通大学,土木建筑工程学院,北京,100044;北京交通大学,土木建筑工程学院,北京,100044 |
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| 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.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.使用该表达式,可简单推算反复荷载作用下的钢筋混凝土桥墩纵筋失稳长度.
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| 关 键 词： | 土木工程结构 钢筋混凝土桥墩 纵向钢筋 失稳长度 塑性铰区长度 |
| 文章编号： | 1000-1506(2004)04-0012-04 |
| 修稿时间： | 2003年10月20日 |
Analytical Method of Buckling Length of Longitudinal Reinforcement for RC Flexural Bridge Piers |
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| LI Yong-zhe,YAN Gui-ping,LI Yun-sheng.Analytical Method of Buckling Length of Longitudinal Reinforcement for RC Flexural Bridge Piers[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2004,28(4):12-15. |
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| Authors: | LI Yong-zhe YAN Gui-ping LI Yun-sheng |
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| Abstract: | In order to assess the ultimate displacement of reinforced concrete columns based on the deformation characteristics in plastic hinge region, it is very important to determine the plastic hinge length reasonably. This paper presents the analytical studies on buckling of longitudinal reinforcement in columns with use of the FEM analyses and compares the theoretical buckling length with that obtained from the column loading tests. Furthermore, the simplified procedure for assessing the buckling length of longitudinal reinforcement with taking account of the inelastic behavior is proposed based on the analytical studies. |
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| Keywords: | structure of civil engineering buckling length reinforced concrete columns longitudinal reinforcement plastic hinge length |
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