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盱眙淮河明珠塔是采用钢结构空间结构体系,内外筒的连接靠水平、斜向支撑和混凝土板的共同作用形成。整个结构中部直径最宽,顶部和底部变细,使结构外筒稳定性变得较为复杂。而且,除塔底部、中部、顶部的功能层有较好的结构支撑和连接外,其他部分的连接相对比较薄弱。尤其是底部和中部之间的透空段,高度大、荷载大,因此这一段的群柱稳定性成为控制结构安全的重要因素之一。本文对该段结构进行了整体稳定性屈曲分析研究。同时也考虑了几何非线性对结构整体稳定性的影响。
盱 眙 Huaihe Pearl Tower is the use of steel structure space structure system, the connection between the inner and outer cylinder by horizontal, oblique support and the common role of the formation of concrete panels. The middle part of the whole structure has the widest diameter and the top and bottom become thinner, which makes the stability of the structure outer cylinder more complicated. In addition, the bottom of the tower, the middle, the top of the functional layer has better structural support and connection, the other parts of the connection is relatively weak. In particular, the hollow section between the bottom and the middle is large in height and large in load. Therefore, the stability of the cluster columns in this section is one of the important factors for controlling the structural safety. In this paper, the overall stability buckling analysis of the structure is studied. At the same time, the influence of geometric nonlinearity on the overall stability of the structure is also considered.