Failure mechanisms of bridge infrastructure in an extreme flood event

摘要: The recent flood events in Queensland, Australia had an adverse effect on the country's social and economic growth. It is reported literature that due to climate change, frequency of has increased as well they have become more intense. This research paper focuses damage caused by floods bridge infrastructure. Bridges affected 2013 Lockyer Valley region Western Queensland were selected a case study. For damaged bridges, data such level damage, material used these type (girder/precast/in-situ), age bridge, elevation from mean sea level, annual average daily traffic, class heavy vehicles inspection before after collected analysed. study aims at identifying all attributes bridges contributing failure approaches, surface, waterway, substructure, superstructure etc. further analyses mechanisms different types (Concrete, In situ, pre cast etc.) identifies relationship component overall infrastructure system. Major identified deck approach, pier/abutment scouring, significant built up mud debris structure cracks abutment wing walls misalignment headstock connection piles. interesting observe there inverse between level. reasons for this could be construction practices adopted past or been rehabilitated previous disaster event. order analyse confirm reasons, possible design codes question identified.