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1)  subway vibration
地铁振动
1.
The experiment of the forced buffeting caused by subway vibration on a large-span pedestrian bridge across subway tunnel is made.
对某钢结构大跨度人行天桥在地铁振动作用下的受迫抖振做现场实桥测试,利用频谱分析和有限元分析方法,对天桥上部结构进行模态参数分析。
2.
In this paper,based on vibration monitoring,the impact of ground traffic on the Bell Tower is studied;the impact on Bell Tower of the vibration induced by subway around the Bell Tower is thoroughly analyzed;in addition,according to the national standards (GB/T50452),the impact of the superposition of ground traffic vibration and subway vibration to Bell Tower is comprehensively evaluated.
本文在对钟楼地面交通振动监测的基础上,就地面交通振动对钟楼的影响进行了研究;就绕钟楼四周的地铁列车振动对钟楼的影响进行了深入分析;依据国家标准(GB/T50452)对地面交通振动、地面交通振动和地铁振动叠加对钟楼的影响进行了综合评估。
2)  subway vibrational loading
地铁振动荷载
1.
In the paper,the dynamic elastic modulus of soil is determined by laboratory dynamic triaxial tests,and the deformation of soil around subway tunnel under subway vibrational loading is computed with numerical simulation,then,the ground subsidence induce.
利用室内动三轴试验结果确定土体的动弹性模量,采用数值模拟的方法计算饱和软粘土地区地铁振动荷载作用下隧道周围土体的变形,由此进一步计算出地铁振动荷载作用下引起的地面沉降量。
2.
After the subway tunnel that is in or across the stratum of saturated soft clay is put to use,the excessive settlement occurs along axes in a large degree because the microscopic structure of the saturated soft clay is deformed and destroyed and the residual strain is produced under the subway vibrational loading.
位于或穿越饱和软粘土层中的地铁隧道在运营之后,沿轴线产生较大的沉降量,很大程度上与饱和软粘土在地铁振动荷载作用下土体微观结构的变形和破坏、发生残余变形有关。
3)  subway-induced vibration
地铁引起的振动
4)  metro train induced vibrations
地铁列车振动
5)  metro's train vibration
地铁车振
6)  vibration induced by underground trains
地铁运行引起的振动
补充资料:点振子振动和点电极振子振动
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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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