摘要
以某预应力混凝土曲线连续刚构桥为研究对象,分析了其在水平地震单独作用下和水平地震与竖向地震组合下的结构地震响应。结果表明,竖向地震对曲线连续刚构桥位移和内力的地震响应都非常明显,随着竖向地震取值的增大,结构的位移和内力也呈增大趋势,其中纵桥向位移和横桥向位移变化不明显,竖向位移在主梁跨中位移变化较明显。
With a curved continuous pre-stressed concrete rigid-frame bridge as the research objective,the seismic response of the bridge with single excitation of horizontal earthquake and combined excitation of horizontal earthquake and vertical earthquake is respectively analyzed.The result shows that the effect of vertical earthquake on seismic response of the curved continuous rigid-frame bridge is very obvious.With the increasing of horizontal earthquake action,the displacement and internal force of continuous rigid-frame bridge tend to increase.The changes of longitudinal displacement and transversal displacement are not obvious,but the change of mid-span vertical displacement of the beam is very obvious.
出处
《交通科技》
2016年第5期28-30,共3页
Transportation Science & Technology
关键词
曲线连续刚构桥
反应谱分析
竖向地震
地震响应
curved continuous rigid-frame bridge
response spectrum analysis
vertical earthquake
seismic response
