摘要
文中针对某高校教学楼敞开式钢结构玻璃穹顶以杆件温度为变化参数,进行静力性能的有限元分析,为施工后的安全提供理论依据。利用有限元软件AnsysWorkbench对穹顶结构进行建模,在雪荷载、积灰荷载、玻璃幕墙荷载以及风荷载的共同作用下,分析均匀温度分布与不均匀温度分布条件下结构的最大变形、应力、弯矩,并对关键的杆件及节点进行了变形、应力和弯矩监控。有限元结果表明,在低温条件下杆件由于收缩产生较大拉应力与弯曲应力,在温度为15℃时,杆件由温度引起的变形、应力以及变形最小。在不均匀温度下杆件的最大拉应力、压应力、弯曲应力及组合应力随温度上升呈线性增加,在上部结构温度为45℃时,顶部压力环弯矩最小。
We conduct a finite element analysis of the static performance of the open steel structure dome of a teach⁃ing building in a certain university by Ansys Workbench to provide a theoretical basis for safety after construction with the temperature of the members as the variable parameter.Under the loading of snow,ash,glass curtain wall,and wind,the maximum deformation,stress,and bending moment of the structure under the conditions of uniform and uneven temperature distribution are analyzed.The deformation,stress,and bending moment of key members and nodes are monitored.The results show that under low temperature conditions,the rod generates significant ten⁃sile and bending stresses due to shrinkage.At a temperature of 15℃,the deformation,stress,and deformation caused by temperature of the rod are minimized.The maximum tensile stress,compressive stress,bending stress,and combined stress of the rod increase linearly with temperature under non-uniform temperature.When the upper structure temperature is 45℃,the bending moment of the top pressure ring is the smallest.
作者
武飞
左闻智
李营
任依凡
杨志坚
WU Fei;ZUO Wenzhi;LI Ying;REN Yifan;YANG Zhijian(China Railway 19th Bureau Group Fifth Engineering Co.,Ltd.,Liaoning Dalian 116100,China;School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《低温建筑技术》
2024年第7期116-119,共4页
Low Temperature Architecture Technology
关键词
穹顶结构
网架结构
钢结构
不均匀温度
静力性能
dome structure
grid structure
steel construction
temperature
uneven temperature
static behavior
作者简介
武飞(1986-),男,河北淮安人,工程师,现从事钢结构施工研究;通信作者:杨志坚(1984-),男,江西抚州人,教授,博导,现从事钢与混凝土组合结构等方面的研究。
