【摘要】 采用模型试验和理论分析的方法对单层平面索网玻璃幕墙结构玻璃与索协同工作的动力性能进行研究。首先通过结构自振特性试验研究玻璃对于索网结构频率、振型以及阻尼的影响,然后提出了动力荷载作用下玻璃与索网的协同工作机理,据此建立玻璃与索网协同工作的数值模型,采用该模型从理论上分析了结构的自振特性。理论分析和试验结果表明:玻璃的抗弯效应对结构第一阶模态影响较小,对结构的高阶模态影响比较明显;索网+玻璃结构的阻尼远大于索网的阻尼,玻璃幕墙结构的阻尼比主要是由玻璃提供的。更多还原

【Abstract】 Model test and theoretical analysis were conducted to study the dynamic performance of cable net facade with consideration of glass panels.First the effects of glass panels on the natural frequencies,vibration modes and damping were investigated with dynamic characteristics test,then the working mechanism of glass panels in coordination with cable net was proposed,and accordingly a numerical model of glass panels in coordination with cable net was built for the dynamic analysis.The study indicates that: the bending stiffness of glass panels has little effect on the first vibration mode of cable net facade,while the effect on the high vibration modes is significant;the damping of the cable net with glass panels is much higher than that of the cable net alone,as is mainly decided by glass panels.更多还原