Ma, B; Cai, Y; Zhang, H; Fan, Y; Wang, F; Wang, P; Lyu, Z and Zhao, Z (2025) Evaluating construction risks of ultralarge diameter bored pile in deep water using combination weighting with two-dimensional cloud optimization. Journal of Construction Engineering and Management, 151(8): 05025007, ISSN 0733-9364
Abstract
The construction of ultralarge diameter bored piles (ULBPs) for cross-sea bridges in deepwater environments is exceptionally complex and faces significant quality assurance challenges. Therefore, accurate risk assessment during construction is essential. This study proposes a construction risk assessment method that combines weighting with two-dimensional cloud optimization. Based on the ULBP construction process, the risk evaluation index system was constructed by identifying six key risk sources, including steel casing deformation, slurry leakage, drill dropping and burying, inclined hole and hole collapse, tremie jamming and blocking, and pouring quality defects. An integrated weighting methodology was implemented to establish optimal index weights, followed by the calculation of two-dimensional cloud model parameters for evaluation indices across risk levels. Risk cloud mapping enabled visualization of assessment outcomes, providing an efficient framework for comprehensive risk evaluation. This risk evaluation system was applied to the Xihoumen Highway and Railway Bridge. Risk factors of steel casing wall thickness, rock-fracturing development, and tremie diameter were identified as high risk. After assessing the outcomes, we devised improvements that successfully ensure the safety and quality of the construction. This demonstrates the risk evaluation system's reasonableness and feasibility.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | bridge engineering; construction risk evaluation; construction technology; deep water; ultralarge diameter bored pile |
| Index terms: | jamming, risk factor, risk assessment, construction technology, thickness, quality assurance, face, methodology, mapping, construction process, deformation, visualization |
| Subjects: | material properties and characteristics, design practice, materials science, digital engineering, psychology, financial risk, research methods, spatial and geospatial analysis, environmental hazards, quality assurance, networking, building construction |
| Topics: | Research Practice, Construction Materials, Cost Management, Design Practice, Digital Applications, Site Management, Organizational Design, Engineering Principles, Sustainability, Quality Management |
| Descriptive scope: | 3 PCT |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here