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承受动荷载机器作用的房屋结构(上部结构和下部地基基础),将会产生结构振动。如果振动的振幅超过了规范的允许值,就会产生有害的影响:(一)破坏结构的安全工作,如产生裂缝、过大的动位移,或材料因疲劳而破坏。(二)它对人类健康具有危害。(三)它会妨碍精密的机器和仪表的正常工作。为了减轻结构振动的有害影响,需要了解振动是怎样产生和传播的。(一)振源。作用于房屋结构上的动荷载机器和振动设备,是使结构产生振动的主要来源。它大致
The structure of a house (upper and lower foundation foundations) subjected to a dynamic load machine will generate structural vibrations. If the amplitude of the vibration exceeds the allowable value of the specification, it will have a harmful effect: (a) the safe operation of the destruction of the structure, such as the generation of cracks, excessive dynamic displacement, or the destruction of the material due to fatigue. (b) It is harmful to human health. (c) It will prevent the normal operation of sophisticated machines and meters. In order to reduce the harmful effects of structural vibrations, it is necessary to understand how vibrations are generated and propagated. (a) vibration source. Dynamic load machines and vibration equipment that act on the structure of the house are the main sources of vibration in the structure. It roughly