波形钢腹板-钢管混凝土组合结构人行天桥的动力性能研究

Research on the dynamic properties of cfst-csw composite structure overline bridge

利用大型通用有限元软化分别对波形钢腹板钢管混凝土组合人行桥与等钢量的平钢腹板钢管混凝土组合人行桥分别进行了人致振动分析,人行荷载取简化后的半波正弦荷载,将其视为一移动荷载作用在桥面上,进行两种人行桥的动力响应分析。分析表明,波形钢腹板组合人行桥的竖向和侧向的动力性能均要优于平钢腹板组合人行桥。

A human- induced vibration analysis on CFST- CSW composite pedestrian and the equal flat steel web CFST composite pedestrian has been conducted respectively. Take simplified half- wave sinusoidal running load modal as the walk incentive load,regard it as a moving load on the bridge deck. Results indicate that the vertical and lateral dynamic performance of CSW composite pedestrian is superior to the flat web composite pedestrian.