Discuss The Influence Of Construction Organization Designon The Railway Engineering Cost

In 2015, China Railway corporation issued no.79 document named "Code for Construction Scheme of Railway Engineering". It proposed purposes of the construction scheme which are "whole project, whole process, all elements and whole objective 'planning and organization according to legal construction requirements, quality and safety precondition, construction schedule and investment efficiency Construction scheme is no longer just the role of the construction guidance, it has converted from construction technical documents into a project management file.In order to design better railway engineering construction scheme in the design phase and discuss the impact of of construction scheme on the project cost, this paper made the following works:1. the construction scheme objectives, methods, steps and content of was summarized, its importance in the design phase was studied and the important content of construction scheme was summarized which is construction schedule, construction site layout plan and material supply plan2. By studying the construction scheme process, its primary task was determined which is the construction scheme investigation, the correlation between the important content of construction scheme survey and the important contents of construction scheme was summarized.3. Relationship between material supply plan and the cost of materials were studied to determine the influencing factors. Tentatively supply points depending on the material supply; According to the amount of each material supply source, the transportation mode, price and distance were determined; According to conparison of the original price and transportation charges, the best solution was determined.4. The settings of large-scale and temporary works was analysed, combined with material supply plan, the rationality of large-scale temporary works settings were demonstrated through technical and economic comparison. Transportation costs can be reduced and transportation convenience can be ensured through reasonable project layout and material supply planning.5. Construction progress plans were compared, influncial factors were determined. According whole engineering amount, controlled engineering and difficult engineering were determined. The balance between engineering cost and engineering schedule was determined through the technical and economical comparison of schedule and cost of controlled engineering, major engineering and rail laying engineering.6. According to the analysis of the impact factors on project cost determined by construction scheme, hierachy structural model was acquired by using of ISM analysis. By analyzing the importance of factors, the influence degree of factors in the preparation of construction scheme was determined.