Study On Security Risk Based On BIM In Large-scale Steel Structure Construction

By virtue of high strength,long span,fast construction and structural innovation,steel structure develops rapidly in long-span and high-rise areas.At the same time,with the increasing complexity of long-scale steel structure construction process,such as spider-man,heavy lifting,large machinery and equipment construction,cross work multiple jobs,steel structure construction includes new construction risks and security risks.The methods of construction and management under the new requirement cannot meet the security management needs,which is difficult to reduce effectively the incidence of steel structure construction accidents.With the continuous development of information technology,BIM has become a new trend.This paper focuses on construction risk management issues of long-span steel structure.It mainly includes:1.describes the hazards,risk,BIM technology,It summaries the construction feathers of long-span steel structure and the traditional inadequate risk management.Using of BIM technology and proving the feasibility;2.applicate statistical methods,and summaries the recent steel types,then analysis the accident laws;3.take advantages of risk analysis methods and assess the risk,which using the fault tree;4.introduce the key technology of BIM emphatically,including modeling.4D simulation.collision detection and hazard zoning technologies,mainly proposed dynamic risk prediction and risk assessment methods.Finally,a sample of a large-scale steel structure is taken,which take advantage of fault tree analysis to analyze the hazard of construction.According to it's stability in replacement,the paper introduces the finite analysis,and solutions based orn BIM,which effectively prevent the occurrence of accidents.The modern information technology provides a powerful technique for improving construction safety in large-scale construction projects,which can reduce personal and structure of the security risk with a new technological path.