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以净跨66.648m的大跨度输煤栈桥为背景工程,利用大型结构分析软件SAP2000,对该桥的动力特性、支架柱刚度等性能进行分析研究,在此基础上分析输煤栈桥的振动、颤振稳定性.分析表明:盆式橡胶支座能有效降低输煤栈桥振动效应;预应力拉索能有效降低结构跨中挠度;钢管混凝土能有效提高栈桥支架柱刚度,该输煤栈桥具有良好的动力特性.
Taking the large-span coal-conveying trestle with a net span of 66.648m as the background, this paper analyzes and studies the dynamic characteristics of the bridge, such as the dynamic characteristics of the bridge and the stiffness of the support column by using the SAP2000, a large structural analysis software. Based on the analysis, Vibration stability of cast-in-situ trestle.The analysis shows that the potted rubber bearing can effectively reduce the vibration effect of the coal pontoon; the prestressed cable can effectively reduce the mid-span deflection; the concrete filled steel tube can effectively increase the rigidity of the pillars, Dynamic characteristics.