结构工程师2017，Vol.33Issue(4)：55-62,8.
行走和跳跃激励下木-混凝土组合简支梁的加速度响应分析
Analysis on Acceleration Response of Simply Supported Timber-concrete Composite Beam under Walking and Jumping Excitation
摘要
Abstract
Finite element modeling was conducted to analyze acceleration responses of simply supported timber-concrete beam under walking and jumping excitation with ABAQUS.The effects of some factors (the stride frequency,the number of pedestrians,the jumping frequency and the population scale of jumping) on the peak acceleration of the composite beam were discussed.The results show that the peak acceleration of simply supported timber-concrete composite beam gets bigger with the increase of the stride frequency.When pedestrians walk on the composite beam regularly,the peak acceleration rises with increase of the number of pedestrians.However,the peak acceleration of the beam under irregular walking is much smaller,and when the number of pedestrians increases,the peak acceleration doesn't keep rising.Besides,the acceleration response of the simply supported timber-concrete composite beam under jumping excitation is much bigger than that under walking excitation,and the peak acceleration of beam also get bigger with the increase of the jumping frequency.The peak acceleration of the beam under regular jumping is bigger than that under irregular jumping,and with increase of population scale,the peak acceleration of the beam rises under the two kinds of jumping.Based on finite element simulation,it is suggested that the design of vibration comfort of the simply supported timber-concrete composite beam should consider both the walking and jumping excitations.关键词
木-混凝土组合梁/振动舒适度/行走激励/跳跃激励/峰值加速度Key words
timber-concrete composite beam/vibration comfort/walking excitation/jumping excitation/peak acceleration引用本文复制引用
姜南标,胡夏闽,洪万..行走和跳跃激励下木-混凝土组合简支梁的加速度响应分析[J].结构工程师,2017,33(4):55-62,8.基金项目
国家自然科学基金项目(51478220) （51478220）
