Dynamic strength failure of geodesic latticed shells subjected to severe earthquake actions

作者：Yang Yang^*; Zhi Xu Dong; Fan Feng; Shen Shi Zhao

来源：Journal of Harbin Institute of Technology, 2008, 40(12): 1878-1882.

• Dynamic failures
• Dynamic performance
• Dynamic strengths
• Earthquake action
• Failure mechanism
• Failure models
• Geodesic latticed shell
• Imperfect shells
• Initial imperfections
• Mode methods
• Process dynamics
• Single layers
• Strength failure

The failure mechanism of single-layer geodesic latticed shells subject to severe earthquake actions was studied. Perfect and imperfect models of geodesic latticed shells with span of 40 m were calculated through full process dynamic analysis. Dynamic performance and failure model of this kind of shells were examined. Effects of initial imperfection, calculated by accordant imperfect mode method, on the dynamic performance of imperfect shells were analyzed. Effects of earthquake actions, element section and roof loads on the dynamic performance of imperfect shells were investigated as well. In addition, the dynamic failure mechanism and failure mode were studied with different parameters. Results obtained were compared with those of other sphere shells. It is indicated that the suggested theoretical procedure is effective and reasonable.

• 出版日期2008