Research On Construction Project Schedule Management Based On Improved Critical Chain Project Management

The scale of modern construction projects is bigger and bigger,and the complexity of processes and resources gradually increases.This situation makes managers pay more attention to the project schedule accuracy.Early project management technologies include Gantt chart,critical path method and Project Evaluation and Review Technique.With the increasing complexity of the projects,these technologies show obvious deficiencies.Because of its overall project perspective,Critical Chain Project Management Technology can eliminate unnecessary time allocation in the project from the perspective of the human behavior hypothesis,carry out the project schedule considering all the constraints,and then collect the eliminated time to the end of the chain to form a buffer in order to deal with the unpredictable risks.CCPM is getting more and more attention.However,due to the increasingly complex engineering projects,Critical Chain Project Management Technology,which is born in the manufacturing industry,needs to be combined with the complex characteristics of construction processes and resources.This paper improves Critical Chain Project Management from two core aspects: critical chain identification and buffer placing.This improvement conforms this technology to the characteristics of the schedule management of large construction projects.First,in the critical chain identification stage,in order to solve the problem of resource allocation method of the critical chain identification,improved adaptive genetic algorithm is applied to identify critical chain intelligently by computer program in this paper with the crossover operator and mutation operator improved compared to past studies.A model is established to solve the defects of traditional algorithm which tends to destroy the best individuals and identify the critical chain inaccurately.Secondly,in the buffer placing stage,in order to solve the problem of traditional buffer placing method,a buffer setting model under considering the influence factors is established in this paper.Finally,this paper applies the Improved Critical Chain model to the schedule management of a real construction project,and proves that the improved algorithm has advantages in critical chain identification and buffer placing,which achieve the purpose of optimizing of the construction project schedule.