吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (1): 225-232.doi: 10.13229/j.cnki.jdxbgxb20200451
• 交通运输工程·土木工程 • 上一篇
孔庆雯1(),谭国金1,王龙林2(),王勇3,魏志刚4,刘寒冰1
Qing-wen KONG1(),Guo-jin TAN1,Long-lin WANG2(),Yong WANG3,Zhi-gang WEI4,Han-bing LIU1
摘要:
为了准确分析裂缝箱形截面梁的自振特性,基于局部柔度形成的基本原理推导了箱型截面梁在深裂缝和浅裂缝情况下的附加柔度矩阵,得到了裂缝梁单元的刚度矩阵,进而形成了基于有限元方法的裂缝箱梁桥自振特性分析方法。对裂缝悬臂钢梁进行动力特性实验,将实验结果与自振频率计算结果进行对比分析以验证本文方法的准确性与可靠性。对连续钢筋混凝土箱梁进行数值分析,剖析了裂缝位置、深度和数量对箱梁桥的自振频率的影响以及裂缝对振型的影响。
中图分类号:
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