摘要
大跨钢拱薄壳穹顶是一种新型的屋盖结构,采用拱式加劲肋、质量轻便的薄壳材料,壳面与底部建筑物由支座环连接。该文应用时程分析和谱分析两种地震反应分析理论,结合某公司的工程实例,采用ANSYS分析软件对钢拱薄壳穹顶在地震作用下的反应进行模拟分析计算,得出结构受地震力作用时应力、位移的变化规律。计算结果表明,在强烈地震作用下,大跨钢拱薄壳穹顶仅出现了较小的位移,相对于其他穹顶结构具有较好的整体稳定性。
Long-span arch shell steel dome is a new type roof structure which is composed of stiffening rib arches, lightweight shell material, and a seat ring used to connect the steel roof with the supporting members. The structural simulation was conducted by using ansys software. Under the earthquake excitation, the seismic responses of the long-span arch shell steel dome were obtained, including the internal forces, stress and displacements. The analysis results show that long-span arch shell steel dome has better stability under the excitation of strong earthquakes.
出处
《工程力学》
EI
CSCD
北大核心
2014年第S1期166-170,共5页
Engineering Mechanics
关键词
大跨度穹顶
限元分析
模态
地震分析理论
稳定性
long-span dome
finite element method
mode
earthquakes seismic theory
stability
