A rainwater grate in one residential area fractured during use.The intact rainwater grates and fractured ones col-lected from the site were analyzed and compared by metallographic examination,scanning electron microscopy,and me-chanical property testing.By combining with finite element simulation analysis,it was found that the material of the frac-tured rainwater grate was gray cast iron,which had relatively poor mechanical properties.Additionally,due to the existence of old damage in the fractured rainwater grate,its strength could no longer meet the requirements for pedestrian stepping,posing a safety hazard,and leading to breakage accidents when stepped on by pedestrians.
万方数据
维普
