Department of Construction Management and Real Estate, Shenzhen University, Shenzhen, Guangdong, China.
School of Computing, Engineering and Mathematics and Institute for Infrastructure Engineering, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
Waste Manag. 2016 May;51:130-141. doi: 10.1016/j.wasman.2016.03.001. Epub 2016 Mar 8.
A huge amount of construction waste has been generated from increasingly higher number of construction activities than in the past, which has significant negative impacts on the environment if they are not properly managed. Therefore, effective construction waste management is of primary importance for future sustainable development. Based on the theory of planned behaviors, this paper develops a system dynamic model of construction waste reduction management at the construction phase to simulate the environmental benefits of construction waste reduction management. The application of the proposed model is shown using a case study in Shenzhen, China. Vensim is applied to simulate and analyze the model. The simulation results indicate that source reduction is an effective waste reduction measure which can reduce 27.05% of the total waste generation. Sorting behaviors are a premise for improving the construction waste recycling and reuse rates which account for 15.49% of the total waste generated. The environmental benefits of source reduction outweigh those of sorting behaviors. Therefore, to achieve better environmental performance of the construction waste reduction management, attention should be paid to source reduction such as low waste technologies and on-site management performance. In the meantime, sorting behaviors encouragement such as improving stakeholders' waste awareness, refining regulations, strengthening government supervision and controlling illegal dumping should be emphasized.
大量的建筑废物是由过去比现在更多的建筑活动产生的，如果不加以妥善管理，它们会对环境造成重大的负面影响。因此，有效的建筑废物管理对于未来的可持续发展至关重要。本文基于计划行为理论，构建了建筑阶段建筑废物减排管理的系统动力学模型，以模拟建筑废物减排管理的环境效益。该模型的应用以中国深圳的一个案例研究为例进行了展示。使用 Vensim 对模型进行了模拟和分析。模拟结果表明，源头削减是一种有效的废物减排措施，可以减少 27.05%的总废物产生量。分类行为是提高建筑废物回收利用率的前提，可占到总废物产生量的 15.49%。源头削减的环境效益大于分类行为。因此，为了实现建筑废物减排管理的更好的环境绩效，应关注源头削减，例如采用低废物技术和现场管理绩效。同时，应强调鼓励分类行为，例如提高利益相关者的废物意识、完善法规、加强政府监管和控制非法倾倒。
