【摘要】 大跨度斜拉桥在地震作用下往往会发生各种形式的破坏,如采用必要的减、隔震措施,能够保证桥梁在地震作用下维持特有的力学性能。本文基于大型有限元软件ANSYS为计算平台,利用各种不同的地震动输入以及弹簧单元模拟塔梁结合形式出发,探讨了塔梁结合形式的不同对于大跨度桥梁减震隔震的效果。最后结合工程实例表明,对于大跨度拱塔斜拉桥设置减、隔震支座进行地震反应分析,结果发现只要塔梁结合形式选择合适,就能起到明显的减震效果。更多还原

【Abstract】 Large-span cable-stayed bridge usually subjects to various forms of damages in the earthquake.But its typical mechanical properties can be maintained during the quake if necessary shock absorption measures be taken.Utilizing the ANSYS finite element software as the computing platform,as well as different seismic input and spring element to simulate the bounding pad of tower and beam,this paper discussed the effects of shock vibration for large-span bridge in terms of different types of bounding pad of tower and beam.Finally,the method is used to a case study.From the seismic response analysis of the bridge with seismic bearings,the result shows that proper bounding pad of tower and beam has obvious effect in seismic resistance.更多还原