Briefly introduced the causes of accidents caused by the stage of steel structure accidents,and from the labor,materials,machinery and equipment,measures and other aspects of the investment cost for reasons of steel structure accidents may be caused by low pricebid,reason-able prevention and control measures were put forward,in order to reduce the accident of steel structure.%简要介绍了按事故发生阶段造成钢结构事故的原因，并从劳动力、材料、机械设备、措施费用投入等方面具体阐述了低价中标可能引起的钢结构事故原因，提出了合理的预防控制措施，以减少钢结构事故的发生。
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