【摘要】 以我国正在建设的某大跨度公铁两用斜拉桥为背景,分析研究了在地震荷载和列车制动力作用下,塔梁之间采用阻尼装置的结构动力响应.计算结果表明,塔梁之间采用液压阻尼装置,能较好地解决温度、列车制动力和地震荷载作用下大跨度公铁两用斜拉桥的受力问题,而选取合理的阻尼参数可以有效控制梁体的纵向位移.更多还原

【Abstract】 Based on a rail-cum-road cable-stayed bridge under construction in China,an analysis is made of the dynamic response of the bridge with hydraulic pressure damping device between tower and beam subjected to seismic load and train braking force.The results show that mechanical problem of rail-cum-road cable-stayed bridge is settled by damping device between tower and beam subjected to temperature load,seismic load and train braking force.And the longitudinal displacement of beam is effectively controlled by proper damping parameters.更多还原