摘要
新江湾空中连廊位于上海市杨浦区,主桥为异形环形钢结构,结构跨度大、桥面荷载复杂、梁高低,采用常规设计方法难以实现。设计时,参考国外规范,采用舒适度控制结构设计。通过选取不同的频率、阻尼比等参数对主桥结构进行人致振动分析,计算得出桥梁竖向加速度和侧向加速度值。根据计算结果进行舒适度评价,并分析不同参数对舒适度的影响。分析结论,可用于指导该类人行桥的设计。
Xinjiangwan space corridor is located in Yangpu District,Shanghai.The main bridge is a special-shaped annular steel structure with large span,complex bridge load and high beam height,which is difficult to achieve by conventional design methods.In the design,the comfort control structure is designed according to the foreign specifications.By choosing different frequency,damping ratio and other parameters to analyze the pedestrianinduced vibration of the main bridge structure,the vertical acceleration and lateral acceleration of the bridge are calculated,and the comfort degree is evaluated according to the calculation results,and the influence of different parameters on the comfort degree is analyzed.The analysis conclusion can be used to guide the design of this kind of pedestrian bridge.
作者
李钊
LI Zhao(Shanghai Tunnel Engineering Rail Transit Design & Research Institute,Shanghai 200235,China)
出处
《中国市政工程》
2019年第1期34-39,105,共7页
China Municipal Engineering
关键词
人致振动
舒适度分析
减振设计
频率
阻尼比
pedestrian-induced vibration
comfort analysis
vibration reduction design
frequency
damping ratio
