Abstract Building Information Modelling (BIM) is increasingly deployed as part of the processes in Architecture, Engineering and Construction (AEC) industry projects. While the benefits of BIM have been extensively proclaimed, explicit justification in terms of direct cost savings for BIM implementation on real-life projects, particularly for clash detection BIM workstream, are not well documented. This paper proposes and demonstrates a methodology to prove how BIM-based clash detection leads to cost savings. A schema is developed based on literature review and industrial expertise to quantify cost savings achieved by the utilisation of BIM-based clash detection and resolution. This paper provides validation of the proposed schema on a major infrastructure project. The developed schema includes the categorisation of identified clashes based on stakeholder involvement and required actions. The validation used the estimated cost of clashes were those not resolved before site operations took place. This schema simplifies both the categorisation and cost estimation of clashes in design. Estimated savings yielded 20% of contract value using the schema, for the multi-million-dollar project case study, thus extending evidence of BIM savings and benefits. The schema improves the existing process and valorises clash detection, thus allowing stakeholders to conduct a cost-benefit analysis. In addition, the categorisation methodology allows prioritising on the most costly clashes, and draw lessons learnt for further projects. This schema opens the path towards a systematic methodology to appraise the benefits of different BIM uses or processes.

中文翻译：

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支持BIM的设计冲突检测和解决方案的成本效益分析

摘要建筑信息模型（BIM）作为建筑，工程和建设（AEC）行业项目中流程的一部分越来越多地被部署。尽管BIM的好处已被广泛宣扬，但对于在现实项目中实施BIM的直接成本节省（尤其是对于冲突检测BIM工作流）的直接成本节省，没有明确的证明。本文提出并演示了一种方法，以证明基于BIM的冲突检测如何节省成本。根据文献综述和行业经验开发出一种方案，以量化通过利用基于BIM的冲突检测和解决方案所实现的成本节省。本文提供了对大型基础架构项目上所提议模式的验证。开发的模式包括根据利益相关者的参与和所需的操作对已识别冲突进行分类。验证使用的冲突估计成本是在站点操作发生之前尚未解决的冲突。该方案简化了设计中冲突的分类和成本估算。对于数百万美元的项目案例研究，使用该模式，估计节省的成本产生了合同价值的20％，从而扩展了BIM节省和收益的证据。该架构改进了现有流程并重视了冲突检测，从而使涉众可以进行成本效益分析。此外，分类方法可以确定最昂贵的冲突的优先级，并为进一步的项目吸取经验教训。