局部压力下薄壁钢筒仓屈曲性能研究  

Research on Buckling Behaviors of Thin-walled Steel Silos Subjected to Local Axial Compression

作　　者：王跃 郑玉超[2,3] 王培军[2] 朱立[2] 

机构地区：[1]山东华建仓储装备科技有限公司,聊城252000 [2]山东大学土建与水利学院,济南250061 [3]山东省电力工程咨询院,济南250061

出　　处：《特种结构》2015年第4期33-38,共6页Special Structures

摘　　要：局部压力作用下筒仓的屈曲性能与均布压力作用下的筒仓屈曲性能有很大区别,但目前对于局部压力作用下钢筒仓稳定性能的研究却十分有限。采用有限元的Buckle分析方法和Riks分析方法,对局部轴压下钢筒仓的屈曲模态和屈曲承载力进行了研究。研究表明:钢筒仓屈曲承载力对环向焊缝缺陷的最不利位置及荷载分布角十分敏感;钢筒仓的屈曲承载力随荷载分布角的增大而减小,随缺陷幅值的增大而减小。Buckling behaviors of steel silos under local compression are different from those under uniform compression.However,there were very limited research results dealing with behaviors of steel silos under local compression.Buckling modes and buckling strengths of thin-walled steel silos under local axial compression were studied using Buckle analysis and Riks analysis.The research results showed that the buckling mode and the buckling strength were greatly affected by the geometric imperfection and the load subtended angle.The buckling strength of steel silo decreased with the increase of load subtended angle and the magnitude of geometric imperfection.

关 键 词：钢筒仓 屈曲 局部轴压 环向焊缝缺陷 

分 类 号：TU392[建筑科学—结构工程]