点支式玻璃幕墙主要承受风荷载的循环往复作用,其组成单元钢化玻璃板表面存在大量的微裂纹,这些微裂纹在循环荷载作用下会不断的缓慢扩展,使得钢化玻璃板在服役期间可能发生疲劳破坏。该文从钢化玻璃板的疲劳试验角度出发,得出钢化玻璃板在循环荷载作用下的刚度衰减规律,且具有明显的三阶段特征,为后续的疲劳损伤和寿命预测研究提供了方法和依据。 The point-supported glass curtain wall is mainly subjected to the cyclical reciprocating action of the wind load. A large number of micro-cracks are formed on the surface of the tempered glass plate of the constituent units. These micro-cracks will continue to slowly expand under the cyclic loading so that the tempered glass plate may occur during service Fatigue damage. From the perspective of fatigue test of tempered glass, the law of stiffness attenuation of toughened glass under cyclic loading is obtained and has obvious three-stage characteristics, which provides a method and basis for the subsequent research on fatigue damage and life prediction.