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在满足建筑设计要求和工程经济性要求的基础上,进行了俄罗斯远东联邦大学学生中心入口幕墙拉索桁架的选型,并利用大型通用有限元分析软件对其最终方案进行了整体的分析。计算结果表明:温度荷载对结构的影响不仅包含由于温度变化直接产生的温度变形和温度应力,还应该考虑由于温度变化引起的预应力变化产生的二次结构影响。另外,钢桁架结构的刚度和拉索的内力是互相影响的,因此必须建立整体模型综合考虑钢结构和拉索桁架在各荷载工况组合下的共同作用。最终,所选用的结构体系的应力水平和位移情况均能满足设计要求。
On the basis of meeting the requirements of architectural design and engineering economy, the selection of the curtain wall cable trusses of the Far Eastern Federal University Student Center was carried out and the final analysis was carried out by using the large general finite element analysis software. The calculation results show that the influence of temperature load on the structure not only includes the temperature deformation and temperature stress caused directly by the temperature change, but also should consider the influence of the secondary structure due to the change of the prestress caused by the temperature change. In addition, the stiffness of the steel truss structure and the internal force of the cable influence each other. Therefore, the overall model must be established to consider the combined effect of the steel structure and the cable truss under various load conditions. Finally, the selected structural system stress level and displacement can meet the design requirements.