【摘要】 单层网壳的稳定性能是该种结构设计的主要控制因素,动力稳定是单层网壳稳定性能的主要组成部分。该文利用非线性有限元理论,对单层柱面正交网壳在地震荷载作用下的动力稳定全过程进行了分析。在数值分析过程中,利用比例法调整地震作用的峰值加速度,采用B-R准则判定结构的动力稳定临界荷载。通过分析对单层柱面正交网壳的动力屈曲前后过程有了一个较为全面的了解。更多还原

【Abstract】 The stability of single layer shell is the main control factor of its construction design,which the primary proportion is the dynamics stability.In the article,dynamic stability completed process of cylindrical orthogonal single-layer lattice shell structures under the earthquake loading is analyzed thought nonlinear finite element method.In the numerical value analysis,the peak value of earthquake loading is modulated by rule of proportion,and the dynamic stability critical loading is estimated by B-R rule.The completed bucking process of cylindrical orthogonal single-layer lattice shell structures can be comprehensively manifested.更多还原