【摘要】 从结构易损性原理出发,结合空间有限元计算,对某斜拉桥最大悬臂阶段在不同风压作用下的内力及应力分布进行分析,并引入损伤系数这一参数来确定全桥结构中的易损单元。分析结果表明:该预应力混凝土斜拉桥在最大悬臂施工阶段的易损结构件为塔梁临时固结处及部分斜拉索。更多还原

【Abstract】 Starting from the principle of vulnerability,combined with finite element calculation, internal force and stress distribution of cable-stayed bridge in largest cantilever stage were analyzed.Damage coefficient was determined to find the vulnerability unit in the bridge.Risk analysis results show that in largest cantilever construction phase of cable-stayed bridge,tower beam’s temporary rigid fixity area and specific cable are prone to vulnerability.更多还原