摘要
以长沙梅溪湖城市岛双螺旋观景平台为工程背景,基于ANSYS软件建立其钢结构斜立柱有限元分析模型。通过特征值屈曲分析得到斜立柱在第4层坡道吊装过程中的失稳屈曲荷载系数,发现设置钢棒之后,斜立柱的一阶失稳荷载为不设置钢棒工况下的4倍;通过非线性屈曲分析得到考虑材料、几何及初始缺陷的斜立柱在第4层坡道吊装过程中的失稳荷载,同时得到斜立柱在考虑不同非线性条件下的失稳模式。
Taking the double helix viewing platform of Changsha Meixi Lake City Island as the engineering background,the finite element analysis model of inclined column of steel structure was established based on ANSYS software.The buckling load coefficients of the inclined column in the lifting process of fourth stories were obtained by eigenvalue buckling analysis.It was found that the first order buckling load of the oblique column with steel bars was four times as much as the case without steel bars.Through nonlinear buckling analysis,the buckling load of the inclined column considering the material,geometry and initial imperfection in the lifting process of the fourth story slope was obtained.At the same time,the instability model of inclined column under different nonlinear conditions was obtained.
作者
王其良
张明亮
舒兴平
黄浩
WANG Qiliang;ZHANG Mingliang;SHU Xingping;HUANG Hao(Hunan Construction Engineering Group Co.Ltd,Changsha 410004,China;Hunan University,Changsha 410082,China;Central South University of Forestry and Technology,Changsha 410004,China)
出处
《钢结构》
2019年第1期98-102,共5页
Steel Construction
关键词
钢结构
工程施工
有限元
特征值屈曲分析
非线性屈曲分析
steel structure
engineering construction
finite element analysis
eigenvalue buckling analysis
nonlinear buckling analysis
