On a New Experimental Method for Structural Damage Identification
一种新的结构损伤识别试验方法研究

A new experimental method by adding additional mass on the tested components to simulate structural damage is proposed, and the equivalence relationship between mass addition and stiffness degradation is proved in this paper. Taking a simply supported beam component as an example, two kinds of additional mass experimental method were proposed, one is the adding sandbag method, the other one is the hanging mass method. Furthermore, steel simply supported beam dynamic testing under various conditions of adding mass to simulate structural damage was carried out. Experimental results validate this method, and it is concluded that structural damage at different locations and with different degrees of beam component can be simulated by adding sandbags on it. This experiment provides a method of simulating structural damage for structural health diagnosis and damage identification. Using this method, only one test component is needed, and the operation procedure is simple and convenient. Its maximum advantage is avoiding the randomness of different tested components and has great practical value.