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ANSYS下承式钢管拱桥动力特性影响参数研究

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摘要 通过有限元软件ANSYS建立下承式钢管拱桥的三维模型,分析拱桥模型的自振频率、振型特征等相关参数,量化宽跨比、横向联系、吊杆损伤对下承式钢管系杆拱桥动力特性的影响。结果表明,该桥的面内刚度强于面外刚度,且抗扭刚度较大;随着拱桥宽跨比的变化,其自振频率根据其振型的不同而各不一样,但拱桥的各阶振型不会随拱桥宽跨比的变化而改变;桥梁的横向联系可以加大拱肋的横向刚度以及各阶自振频率;拱桥发生局部吊杆损伤不会改变其各阶振型,拱桥结构的自振频率受局部吊杆损伤的影响非常小。
作者 宋力锋
出处 《四川水泥》 2022年第10期226-229,232,共5页 Sichuan Cement
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