单层鞍型网壳的抗震性能分析  

Analysis on seismic behavior of single-layer saddle-shape reticulated shells

作　　者：曹正罡[1] 范峰[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《世界地震工程》2004年第2期55-60,共6页World Earthquake Engineering

基　　金：国家自然科学基金重大项目(项目批准号:59895410)

摘　　要：采用子空间迭代法计算单层鞍型网壳的自振特性,利用圆管截面空间梁系弹塑性本构关系,用时程分析法计算单层鞍型网壳的弹塑性地震响应,通过对SDAP和ANSYS有限元程序计算结果比较分析,总结出单层鞍型网壳的自振特性、地震内力响应及地震内力系数随参数的变化规律。The sub-space iteration is used to calculate the free vibrational characteristics of the single-layer saddle-curve reticulated shells. Base on the elastic-plastic constitutive model of the three-dimension beam element with pipe section, the step-by-step integration procedure is used to analyze elastic-plastic seismic response of the single-layer saddle-shape reticulated shells. By analyzing results of the program SDAP and the FEM software of ANSYS, the rules of the free vibrational characteristics, the seismic inner-force response and the seismic inner-force coefficient of the single-layer saddle-shape reticulated shells are summarized.

关 键 词：单层鞍型网壳 自振特性 时程分析法 弹塑性地震响应 地震内力系数 

分 类 号：P315.4[天文地球—地震学] TU352.11[天文地球—固体地球物理学]