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1)  wind induced vibration of bridge
桥梁风致振动
2)  bridge vibration
桥梁振动
1.
Theoretical analysis of low-frequency noise radiated from bridge vibrations;
桥梁振动辐射低频噪声评估方法研究
2.
Based on the 1/4 models of motorcar,the model of simple supported beam was used with constant moving load to simulate bridge vibration and the half sine curve was used to simulate the bridge floor longitudinal curve when bridge upwards formed.
基于1/4汽车模型,采用常量力移动荷载模型模拟桥梁振动,以及半正弦曲线模拟桥梁上拱后所形成的桥面纵坡曲线,分别建立了由桥梁振动和桥梁上拱引起的车辆振动响应方程,分析比较了以上2种情况对车辆振动的影响。
3.
The train-bridge vibration characteristic is analyzed by this program when mix-marshalling freight trains traverse a 32-meter-span prestressed concrete simple beam bridge.
从列车在不同加载位置对桥梁的作用以及桥梁对车辆的反作用的角度出发,结合车桥的动力特性,揭示了混编货车过桥时,一般桥梁振动响应较大、轻车容易发生脱轨事故的机理——混编货车由于轴重差别显著,对桥梁产生周期性的大幅值的强迫荷载,导致桥梁振动剧烈,而桥梁的振动加剧又对轻车产生强烈的反作用。
3)  girder bridge vibration
梁桥振动
4)  Vibration of bridge
桥梁振动
5)  wind-induced vibration
风致振动
1.
Advances in research of wind-induced vibration of long-span high-voltage transmission line system;
大跨越高压输电塔线体系风致振动的研究与进展
2.
Experimental study on wind-induced vibration inertial force for a high-rise building;
某高层建筑风致振动惯性力的试验研究
3.
The wind-induced vibration analysis is studied based on the modal analysis.
在模态分析的基础上,进一步对管桥进行风致振动分析。
6)  wind induced vibration
风致振动
1.
In this paper,an aeroelastic model of an annular cantilevered roof of a stadium was successfully designed and manufactured on proper simplification of the similarity rules and based on the characteristics of the structure and wind induced vibration responses of such structures.
通过对结构典型测点加速度响应谱的特征分析以及对风向和风速对结构加速度和位移响应的影响的分析得到:看台以上挑篷中部的振动最强;风向对挑篷不同部分的振动幅值和参与振型有很大影响;挑篷的风致振动响应由多模态贡献。
2.
Safety and serviceability are in this paper preliminarily established for controlling wind induced vibration of long span bridges.
并针对大跨桥梁风致振动的特点 ,考虑桥梁风振的参数不确定性 ,提出了桥梁风振半主动控制的概念 ,设计了一种新型的可调频率的半主动调质阻尼器 ,建立了相应的分析方法。
3.
In order to study the wind induced vibration and modal of long span suspension bridges under large wind, the data of wind induced vibration response are got by the real time monitoring system of Humen Bridge.
为研究大跨悬索桥的风致振动及在大风下的模态 ,利用已建立的虎门大桥实时监测系统获得了风致振动数据。
补充资料:点振子振动和点电极振子振动
分子式:
CAS号:

性质:又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内,形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积,且与厚度有适宜的匹配关系。在交变电场作用下,沿厚度方向产生振动,其振幅随着至电极中心距离的增加,呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄,有时考虑到压电陶瓷自身强度太低,可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。

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