固简支钢管混凝土构件侧向冲击试验研究

对固简支钢管混凝土构件在侧向冲击下进行了耐撞性试验,实测了该构件在冲击荷载作用下的动力响应及破坏过程,得出了试件在冲击力作用下的时程曲线,同时对构件的破坏形态问题也做了分析。试验表明:钢管混凝土构件具有良好的抗冲击性,在构件受到突加荷载作用时,表现出了很好的延性。钢管混凝土受到侧向撞击时,材料有明显的屈服阶段。落锤的速度越高和质量越大,构件的动力响应越明显。这为进一步研究钢管混凝土结构提供了分析方法和依据。

EXPERIMENTAL STUDY OF FIXED-FREELY SUPPORTED CONCRETE FILLED STEEL TUBULAR UNDER LATERAL IMPACT LOAD

An impact resistance experiment on fixed-freely supported steel tube-confined concrete under lateral impact has been carried out. The dynamic response and destruction course of the model is measured under impact forces. The travel time curve of the test specimen is drawn up, and the state of being broken are researched. It is shown by means of test that the STCC has good resistance to impact force, that when the component is added the force suddenly the STCC demonstrates very good ductility. When the STCC is subjected to the lateral impact force, the materials have obvious yield stage. The bigger the speed and quality of the drop hammer, the more fragile of STCC dynamic response. This subject has provided the credible reference and the analytical method for further research on this problem.