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考虑网格形式和高跨比的变化,用有限元软件ANSYS对多个单层双曲抛物面网壳算例进行地震时程分析。采用全过程动力响应分析方法研究其失效特点,利用建筑结构基于位移和能量的双参数破坏准则的模式,将结构最大位移与塑性累积耗能进行组合建立了动力强度破坏的双参数准则,以动力破坏指标判定结构的动力破坏程度。与原有网壳结构动力破坏准则相比,应用双参数准则和动力破坏指标可以更有效地评价单层双曲抛物面网壳在地震作用下的动力强度破坏程度。
Considering the change of the grid form and the high span ratio, the finite element software ANSYS was used to analyze the seismic time history of multiple monolayer hyperbolic parabolic shells. The full-process dynamic response analysis method is used to study its failure characteristics. Based on the model of two-parameter failure criterion based on displacement and energy of building structure, the maximum displacement and plastic cumulative energy consumption are combined to establish the two-parameter criterion of dynamic strength failure. Destruction indicators determine the extent of structural damage. Compared with the original dynamic damage criterion of reticulated shell structure, the dynamic parameters of single-layer hyperbolic paraboloid reticulated shell under earthquake can be evaluated more effectively by applying the two-parameter criterion and dynamic failure criterion.