Based on the basic theory of vertical vibration comfort of floor structure,the basic method of comfort checking calculation and the main measures to improve the comfort level are clarified.Based on a high-rise building project with 15 m long cantilever structure,YJK and MIDAS Gen are used to carry out the vertical natural vibration frequency and peak acceleration multi-order,multi-frequency and multi-condition checking calculation for different cantilever parts respectively.According to the time-history load distribution under walking excitation and rhythmic motion,the vertical vibration response of the floor is analyzed and compared respectively.For the floor structure with peak acceleration exceeding the limit significantly,the methods of increasing stiffness and damping are adopted respectively to meet the relevant requirements of vibration comfort.On this basis,the technical evaluation of the two solutions is made.Through the complete calculation and analysis,the inherent law and reliable measure of structural comfort of cantilever transfer truss structure are found out.At the same time,the design parameters and design methods of relevant chapters of"Technical standard for human comfort of the floor vibration"(JGJ/T 441-2019)are discussed,and the optimization suggestions are added for reference.
cantilever structurecomfort leveltuned mass damperpeak accelerationeffective maximum acceleration
国家科技期刊平台
NSTL
万方数据
