翼形悬挑莫比乌斯环结构的计算分析

Calculation and analysis of wing shaped cantilevered Mobius ring structure

介绍了一座莫比乌斯环形的瞭望塔的结构计算分析,该构筑物通过底部基座与单根立杆支承,两端各悬挑19 m,采用钢箱型梁组合而成.为了确保该构筑物结构安全,计算分析了其结构强度、位移,并进行了屈曲分析和防连续倒塌分析.由于该构筑物为风敏感建筑,为正确计算作用于建筑物表面的风荷载,进行了CFD数值模拟分析和风洞模型试验,将建筑置于整个风场中进行计算分析.由于该构筑物刚度小,第一阶自振频率仅为2.67 Hz,计算分析了多人连续行走、全跨人行自由行走和半跨人行自由行走情况下的舒适性,均可满足要求.

This paper introduces the structural calculation and analysis of a Mobius ring watchtower.The structure is supported by a base at the bottom and a single pole,with a cantilever of 19 m at both ends,and is composed of steel box girders.In order to ensure the safety of the structure,the structural strength and displacement of the structure are calculated and analyzed.In addition,the buckling analysis and anti progressive collapse analysis are carried out.As the structure is a wind sensitive building,in order to correctly calculate the wind load acting on the building surface,CFD numerical simulation and wind tunnel test were carried out,and the building was placed in the whole wind field for calculation and analysis.Due to the small stiffness of the structure,the first natural vibration frequency is only 2.67 Hz.The comfort levels under the conditions of multi-person continuous walking,full-span free walking and half-span free walking are calculated and analyzed,which all meet the requirements.