Infrastructure Engineering - Research Publications
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ItemAnalytical Framework for Understanding the Differences between Technical Standards Originating from Various Regions to Improve International Hydropower Project Delivery(MDPI, 2022-02-01)The international hydropower construction market is continuously growing during the past decade. The existing literature points out that contractors are facing ongoing difficulties in achieving the objectives of developing international hydropower projects, which largely arise from the misunderstanding and poor use of international technical standards. However, there is a lack of a coherent framework to help systematically analyze the differences between technical standards originating from various regions. This study establishes an analytical framework that incorporates the essential factors of technical standards, namely philosophy of standards, logical structure, completeness of standards, calculation method, equipment and material requirements, test method, construction method, and application conditions of standards, and demonstrates their relationships from a holistic perspective. With support of the data collected from Chinese contractors, the results revealed the application status of various technical standards and their differences. Hierarchical cluster analysis demonstrates that unfamiliarity with the differences between domestic and international technical standards can cause multiple problems in international hydropower project delivery, concerning applying international standards, integrated project management, design, procurement, and construction, which have broad theoretical and practical implications. The outcomes of this study can not only help contractors improve their capabilities of applying international standards for achieving superior international hydropower project performance, but also facilitate mutual recognition of the standards from various regions, thereby maximizing the effectiveness of global resources such as expertise, technologies, methods, and products.
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ItemFramework for standardising carbon neutrality in building projects(Elsevier, 2022-11-01)The construction industry accounts for approximately 40% of the global carbon emissions and is the largest consumer of materials and energy. Given the Paris Agreement target towards global net-zero greenhouse gas (GHG) emissions, significant changes are required in the design, construction and use of buildings. This study applies a qualitative approach that combines a systematic literature review (SLR) with in-depth semi-structured interviews with experts to analyse existing carbon neutrality frameworks and decision support tools; expanding current knowledge by bringing to the fore the challenges experienced in implementing these frameworks. This research effort reveals an inadequacy in frameworks for effective decision-making on decarbonisation strategies along the project lifecycle. A novel framework that breaks down the activities and decision points across the entire project lifecycle is proposed to bridge this gap in literature. The developed framework defines whole lifecycle cost, whole lifecycle energy use, exergetic lifecycle and whole lifecycle emissions as the four critical underpinning variables considered in making decarbonisation decisions. It further details the key evaluation criteria to facilitate decision-making at each stage of the project lifecycle and provides decision-makers with contextual guidance for assessing the impact of their decarbonisation decisions at the planning, delivery, closure and operations phases of the project. It will assist academic researchers, building owners and industry professionals to keep track of the project's carbon neutrality target and encourage best practices for carbon emission reduction in the building sector.
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ItemNo Preview AvailableA review of facilities management interventions to mitigate respiratory infections in existing buildings(PERGAMON-ELSEVIER SCIENCE LTD, 2022-08-01)The Covid-19 pandemic reveals that the hazard of the respiratory virus was a secondary consideration in the design, development, construction, and management of public and commercial buildings. Retrofitting such buildings poses a significant challenge for building owners and facilities managers. This article reviews current research and practices in building operations interventions for indoor respiratory infection control from the perspective of facilities managers to assess the effectiveness of available solutions. This review systematically selects and synthesises eighty-six articles identified through the PRISMA process plus supplementary articles identified as part of the review process, that deal with facilities' operations and maintenance (O&M) interventions. The paper reviewed the context, interventions, mechanisms, and outcomes discussed in these articles, concluding that interventions for respiratory virus transmission in existing buildings fall into three categories under the Facilities Management (FM) discipline: Hard services (HVAC and drainage system controls) to prevent aerosol transmissions, Soft Services (cleaning and disinfection) to prevent fomite transmissions, and space management (space planning and occupancy controls) to eliminate droplet transmissions. Additionally, the research emphasised the need for FM intervention studies that examine occupant behaviours with integrated intervention results and guide FM intervention decision-making. This review expands the knowledge of FM for infection control and highlights future research opportunities.
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ItemEvaluating uncertainties to deliver enhanced service performance in education PPPs: a hierarchical reliability framework(EMERALD GROUP PUBLISHING LTD, 2022-06-20)Purpose This study aims to develop a hierarchical reliability framework to evaluate the service delivery performance of education public–private partnerships (PPPs) effectively and efficiently during long-term operations. Design/methodology/approach The research design included development and test phases. In the development phase, three performance layers, i.e. indicator, component and system, in the education service delivery system were identified. Then, service component reliability was computed through first order reliability method (FORM). Finally, the reliability of the service system was obtained using dynamic component weightings. A PPP school example in Australia was set up in the test phase, where performance indicators were collected from relevant contract documents and performance data were simulated under three assumptive scenarios. Findings The example in the test phase yielded good results for the developed framework in evaluating uncertainties of service delivery performance for education PPPs. Potentially underperforming services from the component to the system level at dynamic timepoints were identified, and effective preventative maintenance strategies were developed. Research limitations/implications This research enriches reliability theory and performance evaluation research on education PPPs. First, a series of performance evaluation indicators are constructed for assessing the performance of the service delivery of the education PPP operations. Then, a reliability-based framework for service components and system is developed to predict service performance of the PPP school operations with consideration of a range of uncertainties during project delivery. Practical implications The developed framework was illustrated with a real-world case study. It demonstrates that the developed reliability-based framework could potentially provide the practitioners of the public sector with a basis for developing effective preventative maintenance strategies with the aim of prolonging the service life of the PPP schools. Originality/value Evaluating education PPPs is challenging as it involves long-term measurement of various service components under uncertainty. The developed reliability-based framework is a valuable tool to ensure that reliability is maintained throughout the service life of education PPPs in the presence of uncertainty.
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ItemImproving Design by Partnering in Engineering-Procurement-Construction (EPC) Hydropower Projects: A Case Study of a Large-Scale Hydropower Project in China(MDPI, 2021-12-01)Hydropower, as a renewable energy resource, has become an important way to fit for Chinese long-term energy policy of energy transformation. Engineering–procurement–construction (EPC) has been increasingly adopted for improving hydropower project delivery efficiency in the utilization of water resources and generation of clean energy, where design plays a critical role in project success. Existing studies advocate the need to use partnering for better solutions to designs in EPC hydropower projects. However, there is a lack of a theoretical framework to systematically address design-related issues considering different participants’ interactions. This study coherently examined the causal relationships among partnering, design management, design capability, and EPC hydropower project performance by establishing and validating a conceptual model, with the support of data collected from a large-scale EPC hydropower project. Path analysis reveals that partnering can directly promote design management and design capability and exert an effect on design capability through enhancing design management, thereby achieving better hydropower project outcomes. This study’s contribution lies in that it theoretically builds the links between intra- and inter-organizational design-related activities by systematically mapping EPC hydropower project performance on partnering, design management, and design capability. These findings also suggest broad practical strategies for participants to optimally integrate their complementary resources into designs to achieve superior hydropower project performance.
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ItemNew normal remote communication for collaboration (presentation)( 2021-12-19)Presented at the 12th International Conference on Structural Engineering and construction Management (ICSECM) 2021, Kandy, Sri Lanka (17-19 December)
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ItemHOW TO GET INTERNATIONAL CONSTRUCTION PROJECTS DELIVERED ON TIME: FROM CHINESE CONTRACTORS' PERSPECTIVE(VILNIUS GEDIMINAS TECH UNIV, 2022-01-01)67.9% of Chinese international construction projects are seriously delayed, which creates the potential for instability in its rapidly growing share of global contracting markets. A greater understanding of the reasons behind the challenges confronting international contractors is urgently required such that improvements can be developed that ultimately will benefit many countries. This study aims to investigate the time performance of international projects in developing countries and to explore the root causes of time overrun. Based on both quantitative and qualitative analysis of 112 case study projects, collected from 12 of the largest Chinse state-owned enterprises (SOEs), this study identifies the distinctive characteristics of three types of projects (late, acceptable, early) classified based on their time performances. It is established that time performance is significantly related to the contractor’s adaptability and project complexity. The results reveal the root causes of construction delays in international project delivery, which provides a structured and in-depth understanding of both internal and external time performance influential factors. The above findings provide sound basis for guiding practitioners in choosing appropriate strategies to improve project time performance, such as encouraging cross-cultural dialogues, integrating global resources and establishing long-term global partnerships with stakeholders.
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ItemManaging Interfaces in Large-Scale Projects: The Roles of Formal Governance and Partnering(ASCE-AMER SOC CIVIL ENGINEERS, 2021-07-01)Interface management has been viewed as one of the important organizational capabilities to promote coordination and integration among stakeholders in construction project delivery, especially for large-scale projects. This paper examines the role of formal governance, partnering, and organizational boundary activities and their interactions in interface management performance. An integrated framework with consideration of the influence of formal governance, partnering, and boundary activities on interface management performance and associated project outcomes was developed and empirically tested with data collected from 85 large-scale international projects. The results show that formal governance is the dominant determinant of interface management performance and can indirectly influence it through improving partnering and boundary activities. Partnering and boundary activities are also significant antecedents of interface management performance, which, in turn, improves project outcomes of large-scale construction projects. Formal governance and partnering mutually reinforce each other. Interface management performance is positively related to project outcomes in terms of quality, cost, and schedule. This empirical research contributes to the fundamental understanding of the critical factors that govern the interface management performance and, ultimately, the project outcomes. In addition, the outcomes of this study highlighted the broad managerial implications for participants in large-scale projects.
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ItemA Competency Framework for Construction Engineering Graduates: An Industry Perspective(Tempus Publications, 2021-06-20)Engineering education plays a key role in training talent engineers to meet the challenges of sustainable development in the construction industry. To address the requirements of construction engineering and sustainable development, a new competency framework was developed based on a systematic literature review. This framework incorporates five categories of competencies, including interdisciplinary knowledge, technical expertise and innovation, identifying and solving problems, managerial capacity, and ethical and professional responsibilities. The framework was validated using a questionnaire survey and eight rounds of interviews. The results suggest that all the five competencies within the proposed framework are important and should be incorporated in the construction engineering education, and this can help graduates deal with sustainability issues in the future.
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ItemEnvironment Management of Hydropower Development: A Case Study(MDPI AG, 2021-04-06)Environment management is one of the key aspects of hydropower development in acquiring sustainable energy. However, there has been limited research demonstrating the overall aspects of environment management of hydropower development with support of sound empirical evidence. In present study, the status of environment management in hydropower development was comprehensively investigated by conducting a case study based on the data collected from a field survey. The results show that, as environment management is largely subject to legal requirements, the environment management system needs to be established by integrating the legal requirements and needs of project implementation. This could potentially reduce the influence of legal restrictions on hydropower development. The main hydropower project environment management processes include identifying key environmental factors, implementation, monitoring, and performance measurement, which deal with environmental issues such as terrestrial and aquatic ecology protection, wastewater treatment, solid waste disposal, and acoustic-environment protection. Project participants should establish partnering relationships to cooperatively deal with environmental impacts of hydropower project development, in which public participation and sufficient resources input into environmental protection are essential for project success. The results of this study provide a sound basis for participants to deal with the key issues of environmental protection such as meeting legal requirements, training for improving environment management process, cost control, and cooperative environment management. The results of this study could help practitioners to tackle the interactions among project delivery, environmental protection, and engagement of local communities in an optimized way with the aim of maximizing effectiveness of the resources of all participants.