| 涡激振动下管桥段的模糊动力可靠性研究 |
| |
| 引用本文： | 余建星,孙大军,罗延生,刘立名.涡激振动下管桥段的模糊动力可靠性研究[J].地震工程与工程振动,2002,22(5):36-40. |
| |
| 作者姓名： | 余建星 孙大军 罗延生 刘立名 |
| |
| 作者单位： | 天津大学建工学院,天津,300072 |
| |
| 基金项目： | 国家自然科学基金资助项目 ( 5 99790 18) |
| |
| 摘 要： | 本文首先给出了管道在流体作用下的力学模型，并对风力作用下管道产生涡激振动的机理进行了分析，从而建立了管桥在风力作用下的力学模型和相应的振动微分方程，同时给出了管桥的固有特性和动力响应分析结果，然后，在此基础上，提出了首超模糊失效、模糊疲劳失效和混合失效等三类模糊失效准则，并依据这些准则分析给出了动力可靠性的计算公式，最后，给出了具体的算例。
|
| 关 键 词： | 涡激振动 管桥 模糊 可靠性 力学模型 风力作用 管道 |
| 文章编号： | 1000-1301(2002)05-0036-05 |
Research on fuzzy dynamic reliability of pipeline bridge under vortex-induced vibration |
| |
| YU Jian-xing,SUN Da-jun,LUO Yan-sheng,LIU Li-ming.Research on fuzzy dynamic reliability of pipeline bridge under vortex-induced vibration[J].Earthquake Engineering and Engineering Vibration,2002,22(5):36-40. |
| |
| Authors: | YU Jian-xing SUN Da-jun LUO Yan-sheng LIU Li-ming |
| |
| Abstract: | This paper first provides mechanic model of pipeline with fluid, and the mechanism of pipeline vortex-induced vibration under wind is analyzed. The mechanic model of pipeline bridge under wind and corresponding vibration differential equation are founded. At the same time the inherent properties and the results of dynamic response are generated. Then the rule of fuzzy failure of the first excess over allowed value, the rule of fuzzy failure of fatigue and the rule of mixed failure are provided. From these rules, corresponding computation formulas of fuzzy dynamic reliability are given respectively. Finally,an application example is given. |
| |
| Keywords: | vortex-induced vibration pipeline bridge fuzzy reliability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
