摘要
南太湖湿地奥体公园体育场屋盖钢结构与下部钢筋混凝土看台完全脱开,最大悬挑长度为45m,屋盖悬挑端设置观光走廊。以结构动力学理论为基础,通过数值模拟方法,对结构施加同步行走、随机行走、同步起立、单人跳跃等32种不同的人行激励,验算人行激励下观光走廊的振动舒适性。重点研究了人行激励下的结构动力时程响应,计算出每种工况的峰值加速度,并与选取的舒适度评价标准限值对比,找出不满足舒适度标准的工况和相应的振动最大位置,为减振设计提供依据。结果表明通过调整结构刚度和结构振动控制均能实现较好的减振效果。
The roof of the stadium in Nantai Lake Olympic Wetlands Park in Huzhou is completely separated from the stand, whose maximum cantilever extend as long as 45m. The sightseeing gallery is sited at the cantilever ends. Based on the structural dynamics-theory, the numerical method was used to evaluate the vibration serviceability of the structure, which was imposed by 32 excitations including harmonic walking, random walking, synchronous standing up and a single person jumping. The peak accelerations obtained from time-history dynamic analyses are compared with the limited accelerations of the adopted standard. The conditions and corresponding locations are found out, and then the stiffness adjustment method and vibration control measures are used to reduce the structure vibration.
出处
《建筑结构》
CSCD
北大核心
2012年第8期8-11,共4页
Building Structure
