紧固件预紧力对沉头式点式玻璃幕墙承载性能的影响研究

Influence of Installation Pretightening Force for Fastener on Loading Properties of Countersunk Point-supporting Glass Curtain

研究了沉头式点式玻璃幕墙在风荷载和紧固件安装预紧力共同作用下产生的应力场和位移场 ,并讨论了预紧力对孔边应力和玻璃板中心位移的影响。算例分析结果表明 ,存在最佳安装预紧力。结论对指导工程实践有实用价值。

The stress and displacement fields of countersunk point-supporting glass curtain under wind load and installation pretightening force for fastener are studided. The infuence of pretightening force on the edge stress of hole and the displacement of glass plate is discussed.Based on examples and analyses, the optimal installation pretightening force for fastener is proposed,and the calculation method is offered.