湖南大学学报（自然科学版）2016，Vol.43Issue(3)：41-47,7.
单层倒悬链型叉筒网壳静力与稳定性研究
Research on Static Properties and Stability of Single-layer Intersected Inverted Catenary Cylindrical Reticulated Shell
摘要
Abstract
For the single-layer intersected inverted catenary cylindrical reticulated shell,the static prop-erties and stability of the structures with different types of grid were studied and compared,and then the optimal grid form was obtained.The static properties and stability of the single layer intersected inverted catenary cylindrical reticulated shell were compared with those of the intersected circular cylindrical reticu-lated shell.Moreover,the stability of the former was studied comprehensively,including the buckling modes and the effect of various parameters such as the member sectional area,initial geometric imperfec-tion,asymmetric load distribution,and support conditions on the ultimate load-carrying capacity.The re-sults show that the structural performance of the single-layer intersected inverted catenary cylindrical retic-ulated shell with triangular grids is markedly superior to the circular one.Because,this kind of reticulated shell is sensitive to initial geometric imperfection,1/300 of the structural span should be considered as the initial geometric imperfection value in the calculation of the ultimate load-carrying capacity.Additionally, the reticulated shell is also quite sensitive to the asymmetric load distribution,and the optimal value of rise-span ratio is 0.50 for shell stability.关键词
单层倒悬链型叉筒网壳/静力性能/稳定性/极限荷载Key words
single-layer intersected inverted catenary cylindrical reticulated shell/static property/sta-bility/ultimate load分类
建筑与水利引用本文复制引用
贺拥军,钟欣,周绪红..单层倒悬链型叉筒网壳静力与稳定性研究[J].湖南大学学报（自然科学版）,2016,43(3):41-47,7.基金项目
教育部博士学科点专项科研基金资助项目（0161110019）；湖南省高校科技创新团队资助计划项目（湘财教指（2012）80号） （）
