【作者】 马青； 陈志华； 闫翔宇； 张泽宇； 王月栋；

【Author】 Ma Qing;Chen Zhihua;Yanxiangyu;Zhang Zeyu;Wang Yuedong;Central Research Institute of Building and Construction of MCC;Tianjin University;

【机构】 中冶建筑研究总院； 天津大学；

【摘要】 为了降低造价,索穹顶结构中环索通常采用连续拉索,节点处采用索夹与其他拉索和撑杆连接。当索穹顶结构承受不均匀荷载时,索夹两侧的环索将会产生索力差,若索夹与拉索间摩擦力不足,则会发生滑移。本文分析了多种不均匀荷载工况下复合式索穹顶结构索力差的分布,得到了索夹滑移最有可能出现的荷载工况和节点位置。分析了在给定索夹摩擦滑移极限时,索夹滑移对结构索力分布的影响。更多还原

【Abstract】 The hoop cables of cable dome structures usually are continuous in order to lower the manufacture cost of cables. The hoop cables are connected to other cables and struts by clamp joints. The force difference will occur between the two cables connected to one joints when nonuniform loads are applied. If the friction between clamp and cables is not sufficient to resist the force difference, clamp and cables may slide. The force difference in hoop cables under several nonuniform loads are analyzed. Distribution of force difference in hoop cables are derived, the load case and the joint with the highest sliding risk are also given. The influence of clamp sliding under given sliding limit is analyzed.更多还原