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本文对某自锚式悬索桥建立有限元模型,分别采用4条强震记录顺桥向及横桥向输入,给出自锚式悬索桥的主塔顶端顺桥向位移时程及第6号吊杆处中间腹板的横桥向位移时程曲线。主塔塔顶顺桥向的最大位移为6.4mm;第6号吊杆处中腹板横桥向最大位移为3.3mm。可以为此桥的抗震设计及分析提供依据。
In this paper, a finite element model is established for a self-anchored suspension bridge. Four strong earthquakes are used to record the input along the bridge and across the bridge. The displacement history of the tower along the bridge from the top of the tower is given, Transverse bridge displacement time history curve of the middle web. The maximum displacement of the main tower along the bridge is 6.4mm; the maximum displacement of the crossbar in the No. 6 boom at the web is 3.3mm. It can provide the basis for the seismic design and analysis of this bridge.