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荷载规范仅对高耸构筑物作了风振的规定。对于高耸房屋建筑,风振影响不如对高耸构筑物那么显著,此时不宜直接采用规范数据。一、高耸构筑物的风振概念风对高耸构筑物的作用,除稳定风载引起静力作用外,其脉动风载还引起动力作用。由于构筑物产生了动力作用,反过来又增大了脉动风载。一个单自由度弹性系统在受稳定风载和脉动风载共同作用下,由脉动风载引起的动力反应与由稳定风载引起的静力反应的比值为K(或稳动力系数,则该单自由度弹性系
The load code only provides wind vibration regulations for tall buildings. For towering houses, the impact of wind and vibration is not as significant as that of tall buildings. At this time, it is not appropriate to directly use normative data. 1. Wind-induced vibration of high-rise structures The role of wind-borne winds in high-rise structures, in addition to the static load caused by stable wind loads, also contributes to the dynamic effect of pulsating wind loads. Due to the dynamic effect of the structure, the pulsating wind load is in turn increased. For a single-degree-of-freedom elastic system, the ratio of the dynamic response caused by pulsating wind loads to the static response caused by stable wind loads under a combination of stable wind loads and pulsating wind loads is K (or the steady dynamic coefficient; Degree of freedom elasticity