300t搅拌站储料仓倒塌破坏原因  

Research on collapse reason of 300 t storage silo under-frame of mixing plant

作　　者：周新祥[1] 胡光宇 刘成[1] 汤艳玲[1] 类兴隆[1] 韩达梦[1] 

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2013年第2期141-144,共4页Journal of University of Science and Technology Liaoning

基　　金：国家自然科学基金(1060201)

摘　　要：为搅拌站储料仓结构安全设计提供可靠的参考依据,以混凝土钢结构搅拌站300t储料仓倒塌问题为研究对象,对钢结构支架采用有限元分析,结果表明,钢结构支架的强度、刚度、稳定性及静、动态分析均满足要求,不可能造成倒塌。对钢结构支架上端与筒体焊接及连接处的应力强度进行分析计算,结果表明,焊接面尺寸不足造成焊接强度不够,使上端与筒体先脱离,钢结构支架失效,是混凝土搅拌站300t储料仓倒塌破坏的主要原因。针对储料仓钢结构底架提出了改进措施。In order to provide a reliable reference evidence for the safe design of storage silos structure,the collapse problem of the concrete steel structure mixing station 300 tons storage silos is taken as the research object,the finite element analysis is carried out.The results show that the steel bracket strength,stiffness,stability,and static and dynamic analysis meet the requirements,it is impossible to cause the collapse.The deficiency of welding surface size causes that the weld strength is not enough,the upper end of the cylinder is broken and the first steel frame is failure,resulting in collapse of the concrete steel structure mixing station 300 tons storage silos.Finally,some countermeasures are proposed.

关 键 词：储料仓 有限元分析 稳定性 焊接强度 

分 类 号：TU391[建筑科学—结构工程]