平移式预制混凝土外挂墙板连接节点设计方法及受力性能分析

Design method and mechanical behavior analysis of translational precast concrete facade wall panel connecting joints

结合某实际工程项目研究了平移式预制混凝土外挂墙板连接节点设计方法。首先结合建筑功能需求提出了墙板的板型划分和运动模式选择原则,根据平移式预制混凝土外挂墙板的运动需求研发了外挂墙板与主体结构钢梁的连接构造,然后结合现行国家规范确定了预制混凝土外挂墙板的性能目标,并根据外挂墙板的运动模式提出了不同工况下连接节点的力学模型及性能化设计方法,最后给出了具体工程实例。提出的设计方法能实现平移式预制混凝土外挂墙板小震弹性,连接节点中震弹性、大震不屈服的性能目标,能够保证墙板的安全性能。

The design method of the connecting joints of the translation precast concrete facade wall panels was studied in a practical project.First,panel type division and movement mode selection principle of the wall panel was put forward considering building functional requirements,and the connection structure between facade wall panel and the steel beam of main structure was researched according to a translational precast concrete facade wall panel movement needs.Then,combined with the existing national standards,the performance goals were determined for the precast concrete facade wall panel.According to the facade wall movement mode,mechanical models and the performance-based design method of connecting joints under different working conditions were put forward.Finally,a concrete engineering example was given.The proposed design method can realize the performance goals of the translational precast concrete facade wall panel with elasticity under frequent earthquake,elasticity of the connecting joint under fortification earthquake and non-yielding under rare earthquake,and the safety performance of the wall panel can be guaranteed.