基于结构方程模型的装配式混凝土建筑增量成本控制研究

Research on incremental cost control of prefabricated concrete buildings based on structural equation model

装配式建筑增量成本是制约装配式建筑发展的关键因素。为有效实现装配式建筑的推广,以装配式混凝土建筑增量成本为研究对象,从混凝土预制(precast concrete,PC)构件的设计、生产、运输和安装4个方面出发,通过文献研究法筛选出影响装配式混凝土建筑增量成本的14个因素;发放调查问卷,用收集到的有效数据构建结构方程模型(structural equation model,SEM),并对装配式混凝土建筑增量成本的影响因素进行评价分析;针对关键影响因素提出控制增量成本的措施。研究结果表明:装配式混凝土建筑增量成本受信息化技术、PC构件生产规模、PC构件装载方案、施工工艺水平的影响较为显著。

The incremental cost of prefabricated buildings is a key factor restricting the development of prefabricated buildings.In order to effectively realize the promotion of prefabricated buildings,taking the incremental cost of prefabricated concrete buildings as the research object,starting from four aspects including design,production,transportation and installation of precast concrete(PC)components,14 factors that affected the incremental cost of prefabricated concrete buildings were screened out through the literature research method.The questionnaires were issued,and the collected effective data were used to construct a structural equation model(SEM)to evaluate and analyze the factors affecting the incremental cost of prefabricated concrete buildings.Aiming at the key influencing factors,measures to control incremental cost were proposed.The research results show that the incremental cost of prefabricated concrete buildings is significantly affected by information technology,the production scale and loading plan of PC components,technology level of construction.