Study On Shipbuilding Schedule Management Of S Ship Industry Based On Improved Earned Value Method

Modern shipbuilding industry adopts order-type shipbuilding mode,which is oriented by "intermediate products" and organizes production and construction according to different ship blocks.The shipowner allocates a certain proportion of the ship payment according to the construction node,so the production and construction according to the schedule of the shipbuilding enterprise is the basis and guarantee for the enterprise to obtain the income and maintain the continuous operation.In the practice of shipbuilding industry,shipbuilding enterprises are affected by internal and external factors,especially internal management,etc.,and construction period delay occurs from time to time in the process of shipbuilding,and large node delay occurs for many times in S shipbuilding industry.Therefore,it is very important for shipbuilding engineering managers and implementers to make reasonable production schedule and ensure the ship production and construction process to be carried out as planned.In the current project schedule management method,the earned value method,as an important progress-cost management method,is widely used in the project schedule management,and the theoretical method has been constantly evolved and optimized in practice.In addition,with the development of computer technology,combined with other progress management methods,the application of earned value method in engineering project practice is more widely,and has achieved certain application effect in many industries and fields.However,in shipbuilding industry,due to the difficulty of data acquisition and the problem of production management concept,earned value method has not been widely used in ship construction schedule management.With the deepening of modern enterprise management concept,especially the development and maturity of modern shipbuilding "intermediate product" oriented comprehensive production mode,the shipbuilding data management level has been greatly improved,and the obstacles to the application of earned value method in shipbuilding industry have been gradually eliminated.Firstly,this paper lists the commonly used management methods of project schedule by consulting relevant literatures,and analyzes and expounds the earned value method theory and improved earned value method based on critical path.This paper introduces the development direction of shipbuilding industry,and summarizes and comments on the related researches of shipbuilding schedule management and earned value theory by domestic and foreign scholars.On the basis of in-depth field investigation of shipbuilding enterprises,this paper studies the status quo of shipbuilding schedule management,points out the existing problems in S shipbuilding schedule management,and analyzes the advantages and feasibility of applying earned value analysis method to single ship construction project schedule management.Combined with the existing engineering progress management methods,and assisted by the Project management software,a single-ship progress management model based on earned value method with the main contents of "work breakdown,plan formulation,cost breakdown,time point detection,earned value(deviation)analysis and adjustment measures" is constructed.This paper makes a case study on the progress management of S ship industry 1055 ship under construction by using the constructed shipbuilding project schedule management mode based on improved earned value method.The progress detection and deviation analysis were carried out according to the management mode,and Suggestions for improvement were put forward.Finally,the application effect of the management mode was summarized,and the future research direction was proposed.