摘要
劲性轮辐式张弦混合悬挂结构是一种新型的刚柔并济的结构体系,其结构系统主要由内外环梁、径向布置的钢拉梁及内外环双弦支系统组成。通过其在青岛市民健身中心体育馆结构中的应用,对该体系的传力途径及内力分布进行了分析研究;对内外环双弦支系统进行了参数化分析;对结构在施工阶段的预应力张拉进行了模拟分析;采用拆除构件法验证了结构的抗连续倒塌能力;并对其抗震性能进行了研究。研究结果表明,该结构体系的受力机理与建筑内凹屋盖的造型有很好的结合,径向布置的钢拉梁作为拉弯构件将内凹屋盖的竖向荷载传递至外圈受压环梁,内外环双弦支系统有效地改善了屋盖的承载性能并减小了屋盖的竖向变形,整体结构在极端条件下具有良好的抗超载能力和抗连续倒塌能力。
The stiff wheel-spoke suspension structure with cable-supported system is a new structure system with rigid and flexible characteristics,the system is mainly composed of inner and outer ring beam,radially arranged steel hang beams,inner and outer double cable-supported system.Through its application in the gymnasium structure of Qingdao Citizen Fitness Center,the loading transmission path and internal force distribution of the system were analyzed,parametric analysis of the inner and outer double cable-supported system was carried out,the pre-stress stretching of the structure in the construction stage was simulated and aralyzed,and the structure’s ability of anti-collapse was verified by the demolition component method,and its capacity under seismic action was researched.The research results show that the force mechanism of the structure system is well fit for the shape of the concave roof of the building,the radial steel hang beams as the tension and bending members transfer the vertical loads to the outer compression ring beams,the double cable-supported systems improve the roof’s bearing capacity and reduce its vertical deformation,and the whole structure has a good ability to resist overloading and progressive collapse under extreme conditions.
作者
孙逊
张翀
SUN Xun;ZHANG Chong(Architects&Engineers Co.,Ltd.of Southeast University,Nanjing 210096,China)
出处
《建筑结构》
北大核心
2023年第15期6-13,共8页
Building Structure
关键词
劲性轮辐式张弦混合悬挂结构
内外环双弦支系统
参数化分析
预应力张拉
连续倒塌
stiff wheel-spoke suspension structure with cable-supported system
inner and outer double cable-supported system
parametric analysis
pre-stress stretching
progressive collapse
