通过对不同跨度、不同初始预张力、不同下部结构形式、不同支座连接条件、不同矢跨比以及不同内弦支结构尺寸的内外双重张弦网壳结构进行数值计算,考察其在罕遇地震作用下的弹塑性动力响应特点.所有模型的网壳杆件均采用非抗震荷载工况满应力优化设计,并满足多遇地震验算.地震波采用两条天然波和由规范反应谱生成的三向人工波.采用非线性时程法对内外双重张弦网壳进行弹塑性地震响应分析.基于计算结果,统计了8度罕遇地震作用下上部网壳塑性区域、塑性发展程度和残余变形的发展特点及其分布规律.研究表明,下部结构形式、支座连接条件以及跨度对内外双重张弦网壳的弹塑性响应最为敏感;地震波对塑性杆件数量和塑性应变大小有一定影响;所有模型均没有在罕遇地震下出现倒塌.“,”Considering the effects of span,initial pretension,layout of the substructure,connection condition of support,rise-span ratio,size of inner string structure and selection of seismic waves,elastic-plastic dynamic responses of double inner and outer latticed shell string structure under rare earthquakes were investigated.The size of member section in the model was determined by the structural full-stress design under non-seismic load cases.Two natural waves and a three-way artificial wave generated from a standardized response spectrum were chosen as applied seismic waves.Nonlinear time-history method was used to analyze elastic-plastic seismic responses of double inner and outer latticed shell string structure.Based on the calculation results,the characteristics of plastic area of the upper latticed shell,the plasticity state,and the residual deformation characteristics and distribution under the 8-degree rare earthquake were studied.The research shows that the span,the substructure form and the connection condition of support are influential to the elastic-plastic responses of double inner and outer latticed shell string structure.Seismic wave has certain influences on the quantity of plastic members and magnitude of plastic strain.Collapses never happen for all models under rare earthquakes.