Abstract
Project schedule management is an important part of prefabricated construction project management. General contracting is an effective way to promote the development of prefabricated construction. However, at present, from the perspective of general contracting, the risk factors affecting the project progress of prefabricated buildings are not clear, and the relationship between risks is not known. The purpose of this study is to study the composition, hierarchical structure and transmission path of schedule risk factors of prefabricated construction in general contracting mode, so as to help the general contractor formulate effective schedule risk avoidance measures. This study uses grounded theory to obtain 22 risk factors that affect the progress of assembly building projects, and the data are from expert interviews. Using Delphi method and interpretative structural modeling (ISM), these factors are divided into seven levels, and the ISM model of schedule risk factors is constructed. The research shows that there are 60 progress risk transmission paths, and four progress risk transfer chains are obtained. This paper also further analyzes and puts forward suggestions to avoid risks for each level. Doi: 10.28991/CEJ-2022-08-01-010 Full Text: PDF
Highlights
A prefabricated building is a building assembled on a site with prefabricated parts
In order to fill this research gap, this paper aims to obtain the set of factors affecting the construction schedule risk of prefabricated buildings from the perspective of the general contractor through grounded theory, and use ism method to analyze the transmission path and mechanism of construction schedule risk of prefabricated buildings
There are many risk factors affecting the progress of prefabricated construction projects
Summary
A prefabricated building is a building assembled on a site with prefabricated parts. In essence, prefabrication is “a manufacturing process, generally taking place at a specialized facility, in which various materials are joined to form a component part of the final installation” [1]. The construction process of prefabricated buildings is complex and highly connected, and the project participants are numerous and need to cooperate closely, which makes it difficult for the owner to manage the work, and it is critical for the owner to choose the contracting mode. The general contracting mode of engineering is generally recognized as an effective way to develop prefabricated buildings. Under the general contracting mode, the management experience and main tasks of the general contractor can be brought into full play, , meet the requirements of systematic and integrated management of prefabricated buildings, fill the requirements of quality and performance to the maximum extent, and improve the efficiency of project construction [4]
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