一个带有粘弹性轴承的钢筋混凝土梁的动态反应的分析解决方案,该轴承承承受移动负荷的作用
Liangming Sun1,2, Shuguang Liu1, Fan Kong3
1School of Civil Engineering and Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
Materials (Basel, Switzerland)
|September 28, 2024
概括
这项研究分析了带有粘弹性轴承的桥梁中的火车引起的振动. 支阻尼可以抑制共振,但支的刚性可能会增加动态反应,粘弹性支在负载后显示出更大的自由振动幅度.
科学领域:
- 土木工程 土木工程是指土木工程.
- 结构动力学 结构动力学
- 机械振动 - 机械振动
背景情况:
- 铁路桥梁会受到火车带来的动态负荷.
- 粘弹性轴承用于减轻振动.
- 优化桥梁设计需要了解支持行为.
研究的目的:
- 开发一个理论框架,用于桥梁中的共振消除.
- 优化粘弹性支铁路桥梁的设计.
- 分析火车引起的桥梁振动,使用低度,高阻尼性轴承.
主要方法:
- 粘弹性轴承钢筋混凝土 (RC) 梁的形状函数的导出.
- 在单个移动负载下分析动态响应.
- 在同等距离的移动负载下对动态反应的研究.
主要成果:
- 支的刚性和减压显著影响动态反应.
- 支硬度可能会增加动态反应.
- 支持阻尼有效地抑制了RC光束中的共振自由振动.
- 粘弹性支在负载经过后比刚性支具有更大的自由振动位移幅度.
结论:
- 支硬度和减压的影响至关重要,不能被忽视.
- 粘弹性轴承为铁路桥梁中的共振抑制提供了一种方法.
- 粘弹性支的设计考虑必须考虑到它们独特的动态行为.
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