摘要
针对滑行道桥在地震波作用下的动力响应问题,开展有限元仿真建模研究。通过理论计算确定模型工程参数,使用内嵌连接器等价简化不同部位之间的连接方式,以建立地震波影响下的机-桥耦合模型。通过移动荷载仿真结果与实测数据校对,验证了模型准确性。输入地震波,对比滑行道桥仿真计算应力应变和结点位移的变化趋势与理论分析结果,二者变化趋于一致,表明建模参数设定准确有效、模型简化得当,且适用于地震波影响下的滑行道桥安全通行能力研究,为进一步研究滑行道桥在地震波影响下的力学性能分析提供依据。
Aiming at studying the dynamic response of taxiway bridge under the action of seismic waves,the finite element simulation modeling research was carried out.The model engineering parameters were determined by theoretical calculations,and the in-line connectors were used to simplify the connection between different parts to establish the machine-bridge coupling model under the influence of seismic waves.The accuracy of the model was verified by the proof of the moving load simulation and the measured data.The seismic wave was selected as input.The trends of stress strain and joint displacement were compared with the theoretical analysis result of the taxiway bridge simulation,which tends to be consistent,indicating that the modeling parameters were set accurately and effectively and the model is simplified appropriately and is suitable for the influence of seismic waves.The study on the safe traffic capacity of taxiway bridges provides a basis for further study of the mechanical performance analysis of taxiway bridges under the influence of seismic waves.
作者
张宇辉
丁硕旋
ZHANG Yu-hui;DING Shuo-xuan(College of Airport,Civil Aviation University of China,Tianjin 300300,China)
出处
《科学技术与工程》
北大核心
2021年第6期2518-2524,共7页
Science Technology and Engineering
基金
国家自然科学基金青年科学基金(51808547)
中央高校科研基金(3122016B005)。
关键词
机场场道工程
滑行道桥
有限元仿真
地震波动
动力响应
时间历程
airport pavement engineering
taxiway bridge
finite element simulation
earthquake fluctuation
dynamic response
time history
