工程总承包对项目实施周期的影响研究——以房屋建筑工程项目为例

Research on the Effect of General Contracting on Construction Project Period——Taking the House-building Project as an Example

研究目的:工程总承包相对于传统的项目组织模式在降低项目总成本、缩短项目总周期方面具有较大优势。本文以房屋建筑工程项目为例,研究工程总承包模式对项目实施周期的影响。研究结果:本文对房建项目进行了一级结构分解,从快速路径法组织生产的角度分析了工程总承包模式下设计与施工的搭接,分别绘制了传统项目组织模式和工程总承包模式下项目的网络图,通过对两种模式下网络图的比较,发现工程总承包模式通过设计与施工的结合,可以极大地缩短项目的实施周期。最后以一个算例进行验证,对项目各工作的持续时间代以具体的数值,分别求出了两种模式下项目的关键线路和实施周期,在本算例中,工程总承包模式下的实施周期比在传统模式下缩短了92 d,为传统模式下项目实施周期的15.7%。

Research purposes：Compared with the traditional construction organization mode,the mode of general contracting has the advantages of reducing the total construction cost and shortening the total construction project period.Taking the house-building project as an example,this paper studies the effect of general contracting on the project period.Research results：First of all,the project is decompounded on the first level framework,and the superposition of design and construction under the general contracting mode is analyzed from the angel of fast procurement.Then network diagrams under two modes are drawn.After comparing the Diagrams,it is found the project period can be shortened much by combining the design with construction well under the D-B mode.For instance,through calculation,the construction period of one project under D-B mode can be 92 days less than that under DBB mode,which is 15% of total construction period.