The deep foundation ditch’s life cycle safety assessment system model construction

Based on life cycle theory,the article establishes life cycle safety assessment model,and divides the deep foundation ditch project into four relative independent parts,prophase information prepare,general planning design,construction,and completion.Every part is one life cycle,and we can take every part into list analysis,which could get conclusion of safety index and economy index.Base on the four parts list analysis,we can take final bulk analysis,and evaluate the whole project system.