School of Civil Engineering, Central South University, Changsha, 410083, Hunan, China.
School of Management and Science, Anhui University of Finance and Economics, Benbu, Anhui, 233030, China.
Environ Sci Pollut Res Int. 2022 Feb;29(9):12589-12600. doi: 10.1007/s11356-021-14370-y. Epub 2021 May 15.
Prefabrication is a promising method for minimizing construction waste since it is conducted in a controlled environment. This paper develops a simulation model for quantitatively evaluating the potential of prefabrication on construction waste reduction by considering interaction behaviors among factors influencing the application of prefabrication and construction waste reduction during the design stage. The theory of planned behavior is applied to determine the system boundary, and a system dynamic model is applied for establishing the simulation model. A case project in Anhui, China, is selected for demonstrating the established model. Results show that the (1) Application of prefabrication method contributes to construction waste reduction by reducing material wastes and reworking due to design changes. (2) Impacts of prefabrication method on concrete waste reduction is the most significant. (3) Increasing investment on designers' professional training and strengthening policies is two efficient strategies to make full use of the potential of the prefabrication method on construction waste reduction during the design stage. The developed model can offer designers as well as policymakers with references for applying prefabrication method for construction waste reduction by comparing outcomes under various scenarios with different strategies and policies ahead of implementation.
预制是一种很有前途的方法，可以最大程度地减少施工浪费，因为它是在受控环境中进行的。本文开发了一个模拟模型，通过考虑设计阶段影响预制应用和减少施工浪费的因素之间的相互作用行为，定量评估预制在减少施工浪费方面的潜力。计划行为理论用于确定系统边界，系统动力学模型用于建立模拟模型。选择中国安徽的一个项目案例来演示建立的模型。结果表明：（1）预制方法的应用通过减少因设计变更而产生的材料浪费和返工，有助于减少施工浪费。（2）预制方法对减少混凝土浪费的影响最为显著。（3）增加对设计师专业培训的投资和加强政策是在设计阶段充分利用预制方法减少施工浪费潜力的两种有效策略。开发的模型可以为设计师和决策者提供参考，以便在实施之前通过比较不同策略和政策下各种方案的结果，应用预制方法减少施工浪费。
