Developing a tailored RBS linking to BIM for risk management of bridge projects

Abstract

Purpose-The purpose of this paper is to address the current theoretical gap in integrating knowledge and experience into BIM for risk management of bridge projects by developing a tailored Risk Breakdown Structure (RBS) and formalising an active link between the resulting RBS and Building Information Model (BIM). Design/methodology/approach-A three-step approach is used in this study to develop a tailored RBS for bridge projects and a conceptual model for the linkage between the RBS and BIM. Firstly, the integrated bridge information model is in concept separated into 4 Levels of Contents (LOCs) and 6 technical systems based on analysis of the Industry Foundation Classes (IFC) specification, a critical review of previous studies and authors' project experience. The second step develops a knowledge-based risk database through an extensive collection of risk data, a process of data mining, and further assessment and translation of data. A critical analysis is conducted in the last step to determine on which level the different risks should be allocated to bridge projects and to propose a conceptual model for linking the tailored RBS to the 4 LOCs and 6 technical systems of BIM. Findings-The findings suggest that the traditional method and BIM can be merged as an integrated solution for risk management by establishing the linkage between RBS and BIM. This solution can take advantage of both the traditional method and BIM for managing risks. On the one hand, RBS enables risk information to be stored in a formal structure, used and communicated effectively. On the other hand, some features of BIM such as 3D visualisation and 4D construction scheduling can facilitate the risk identification, analysis and communication at an early project stage. Research limitations/implications-A limitation is that RBS is a qualitative technique and only plays a limited role in quantitative risk analysis. As a result, when implementing this proposed method, further techniques may be needed for assisting quantitative risk analysis, evaluation and treatment. Another limitation is that the proposed method has not yet been implemented for validation in practice. Hence, recommendations for future research are to: 1) improve the quantitative risk analysis and treatment capabilities of this proposed solution; 2) develop computer tools to support the solution; 3) integrate the linkage into a traditional workflow; and 4) test this solution in some small and large projects for validation. Practical implications-Through linking risk information to BIM, project participants could check and review the linked information for identifying potential risks and seeking possible mitigation measures, when project information is being transferred between different people or forwarded to the next phase.

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