传统双代号网络进度计划的改进与应用

发布时间：2018-10-30 17:49

【摘要】：随着现代社会经济的快速发展,建设工程项目越来越多,规模也越来越大,工程项目管理的内容也在不断的完善,项目进度管理作为工程项目管理中的一项非常重要的工作,能全面反映项目的实施情况,其重要性越来越突出,也对项目进度管理的方法,提出了更高的要求。工程进度管理对于企业而言,都是获得经济效益的有力保证。每个建设项目,在建设期间都要投入大量的财力,并承担着巨大的财务压力和资金回收的风险。所以,工程早日完成投入使用,就能够早日产生效益。作为施工企业,在合同签订之后,在不发生重大施工内容变更的前提下,如果想获得相对更多的经济效益,就必须通过科学的管理方法,而工程进度管理就是合理获得良好经济效益的有效和直接手段[1]。如何进一步控制工期,节省资源,节约工程项目的投资,是目前广大项目管理者普遍关注的问题。施工单位是控制施工进度计划的主体,需要对影响进度计划的因素进行分析调查,预测各项因素对进度的影响,指导工程项目的进度计划实施,保证进度控制。编制项目进度计划是项目管理工作中的重点内容,能全面反映一个工程项目的实施情况。在施工阶段做好进度管理,对确保工程按期完工起着重要的作用。传统的网络进度计划,因为考虑到工程施工过程中存在很多的不确定因素,其活动实施时间也不能完全确定,所以在确定网络进度计划时间参数的时候采用的是计划评审法(PERT),时间参数的确定是利用有经验的技术人员对每个事件进行工期的大致估计,通过确定最乐观时间、最悲观时间和最可能时间。在时间参数的估计中,传统的网络进度计划采用的是最悲观时间。这样使工程的整体进度较长,资源占用量大,从而使工程成本也较高。通过对传统网络进度计划的分析,可以看出要想获得良好的经济效益就要保证合理工期,改进后的网络进度计划在确定时间参数的时候采用最乐观时间。与传统网络进度计划相比,具有施工工期短,费用节约等优势,早投产早使用,抢占先机取得良好的经济效益和社会效益。
[Abstract]:With the rapid development of modern society and economy, more and more construction projects have been built, and the contents of project management have been continuously improved. Project schedule management is a very important work in engineering project management. It is more and more important to reflect the implementation of the project, and it also puts forward higher requirements for the method of project schedule management. Project schedule management is an effective guarantee for enterprises to obtain economic benefits. Every construction project has to invest a lot of financial resources during the construction period, and bear the huge financial pressure and the risk of capital recovery. Therefore, the early completion of the project into use, will be able to produce early benefits. As a construction enterprise, after the signing of the contract and without major changes in construction content, if we want to obtain relatively more economic benefits, we must adopt scientific management methods. The project schedule management is an effective and direct means to obtain good economic benefits reasonably [1]. How to further control the duration of the project, save resources and save the investment of the project is a common concern of the project managers at present. The construction unit is the main body of the construction schedule control, it is necessary to analyze and investigate the factors that affect the progress plan, predict the influence of each factor on the progress, guide the implementation of the project schedule plan, and ensure the schedule control. Drawing up project schedule is an important part of project management, which can reflect the implementation of a project. It plays an important role in ensuring the completion of the project on schedule by doing the schedule management well in the construction stage. The traditional network schedule, because there are many uncertain factors in the construction process, the implementation time of its activities can not be fully determined. Therefore, in determining the network schedule planning time parameters, we use the plan review method (PERT), time parameters determination is to use experienced technicians to estimate the duration of each event roughly, by determining the most optimistic time. The most pessimistic time and the most likely time. In the estimation of time parameters, the most pessimistic time is used in the traditional network schedule. In this way, the overall progress of the project is long, the amount of resources is large, and the cost of the project is higher. Through the analysis of the traditional network schedule, we can see that if we want to obtain good economic benefits, we must ensure a reasonable time limit, and the improved network schedule adopts the most optimistic time when determining the time parameters. Compared with the traditional network schedule, it has the advantages of short construction period, cost saving and so on.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU722

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