【摘要】 以具有实际工程意义的40m跨度,矢跨比为1/3,同时考虑圈梁和下部柱及柱间支撑的K8型单层球面网壳为研究对象,利用ANSYS有限元程序,在考虑几何非线性和材料非线性效应的条件下,研究该结构在三向强烈地震荷载作用下的动力响应、失稳模态及破坏机理,并分析下部支承结构、杆件弯曲变形对网壳结构动力稳定性的影响。更多还原

【Abstract】 The dynamic responses, instable mode and failure mechanism of 40 m-span and rise-span ratio of 1/3 K8 single-layer spherical reticulated shell with supporting structure under three-way strong earthquake action are investigated by the finite element program ANSYS in the paper. In the studying, both the geometric and the material non-linearities are taken into consideration. At the same time,it is analyzed the effect of the supporting structure and bending deformation of the members on the dynamic stability of the reticulated shell.更多还原