Study On Construction Technology For Mountain Wind Power And Safety Assessment Based On BIM

In recent years,the increasing shortage of traditional fossil energy,and the accompanying climate change and environmental pollution issues have become the focus of attention of countries around the world.Wind energy as a clean,environmentally friendly and renewable new energy.In the context of policies promoting the transformation of the energy structure,the global wind power industry has developed rapidly,and the installed capacity of wind power in China has exploded in the past decade.However,the proportion of wind power in China’s energy consumption structure is still very low,and fossil energy sources such as coal and petroleum dominate.The reason is that the cost of wind power construction is high,and wind energy resources are often distributed in mountains,river valleys,plateaus,and offshore areas.Wind farm construction and operation and maintenance management are difficult,resulting in the lack of competitiveness of wind power projects and coal power projects.In addition,The structure of wind turbines has been used in harsh environments for a long time,the structural stress is complex,and the collapse of wind turbines occurs from time to time.The huge losses caused by it are often difficult to make up for.As an emerging popular technology in the construction industry,BIM has the advantages of visualization,simulation,collaboration,informatization,optimization,and plotability.It can greatly improve the information level of engineering projects and help engineering projects realize refined management;provides a new solution to improve project quality and reduce engineering costs.Therefore,this article combines BIM and mountain wind power projects,explores the BIM application ideas of wind power projects,and provides BIM solutions for wind power projects to improve information level,reduce construction costs,and improve operation and maintenance efficiency.The main research contents of this article are:By consulting domestic and foreign literature,combing the development status of wind power and BIM at internal and foreign,and summarized the BIM concept,technical characteristics,core software and wind power generation principles,structural structure,construction process,clarified the application value of BIM in wind power projects.Take Ruyuan Dabu Wind Farm as an example,apply BIM to the planning,design and construction phases of wind farms.The application of BIM in wind farm planning and design,structural design and booster station design is studied,also studied the application of BIM in the optimization of wind power hoisting scheme,steel bar collision check,construction simulation,technical disclosure,engineering quantity statistics,roaming.Taking the 100 m steel-concrete combined tower of 2.0MW wind turbine as the research object,calculate tower load based on specifications and literature,import BIM refined model into Workbench,established "wind wheel-cabin-tower" integrated finite element model,taking into account changes in tower wall thickness,tube doors,steel bars and prestressed beams,Static analysis,buckling analysis,modal analysis,seismic analysis of tower under wind load,gravity,earthquake,obtain the static and dynamic response of the steel-concrete combined tower,the safety evaluation of the steel-mixed tower was made according to relevant specifications,the conclusion is that the tower structure is safe,but the door needs to be strengthened,and proposed the monitoring scheme of stress and deformation of tower.This provides useful ideas for the BIM forward design of wind power structures.