Detection Model for Unbalanced Bidding in Railway Construction Projects: Considering the Risk of Quantity Variation

Wu, Xi; Xu, Feng

doi:10.1061/(asce)co.1943-7862.0002058

Cited by 6 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the quantity surveyors in the U.K. play a more active role in assessing the quantity variations and managing related claims by performing variation valuations and issuing periodic reports of the project status. Third, construction projects are often procured in traditional lump-sum contracts in China, which are exposed to a higher-level risk of quantity variations (An and Ma, 2019;Wu and Xu, 2021). In contrast, more flexible options are provided in construction contracts in the U.K. For instance, the NEC (New Engineering Contract) with target cost contracting approach has been endorsed by the U.K. government for public sector projects, which offers an approach of seeking fair risk allocation and reducing variation claims (Smith and Wood, 2019).…”

Section: Variation In Quantitiesmentioning

confidence: 99%

Identifying Critical Dispute Causes in the Construction Industry: A Cross-Regional Comparative Study between China and the UK

et al. 2023

View full text Add to dashboard Cite

Construction disputes have long been identified as epidemics in the construction industry worldwide, which has become a more serious problem due to the impact of the Covid-19 pandemic.Previous studies on the dispute causes have primarily focused on country or region-specific contexts, and hence the results cannot be generalized in solving this chronic problem in a broader construction project worldwide. This study aims to explore and evaluate the critical dispute causes in construction projects through a comparative study between China and U.K. A total of thirty-three common dispute causes were identified through a comprehensive literature review and further consolidated by pilot surveys in the two countries. An online questionnaire survey was administered among the construction professionals in China and U.K., with 170 valid responses returned for data analysis. Principal component factor analysis, mean score ranking approach, quartile analysis, and Mann-Whitney U test were employed to identify the most critical dispute causes. Similarities and differences were mapped between the two countries. It was found that the five most critical categories of dispute causes in the two territories are: delay-related problems, lack of communication, contractual problems, site conditions, and design problems. The importance of variation in quantities, breach of contract, misinterpretation of contractual terms and conditions, and poor contract management was perceived significantly differently by the respondents in China and U.K., whereas design defects and failure to make compensation for additional work were the most critical common dispute causes in both countries. The research provides important findings for both academics and practitioners to holistically understand the similarities and differences of dispute causes in China and U.K., and aids preventing disputes more effectively in the global construction industry.

show abstract

Section: Variation In Quantitiesmentioning

confidence: 99%

Identifying Critical Dispute Causes in the Construction Industry: A Cross-Regional Comparative Study between China and the UK

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Based on this study, Liu [69] proposed a mathematical theory of unascertained measurement and first applied it to the evaluation problem. After years of unremitting research by many experts and scholars, its theoretical system has gradually matured and has been applied in many fields [57,70,71].…”

Section: Multi-indicator Comprehensive Measurementmentioning

confidence: 99%

A Novel Method for Predicting Rockburst Intensity Based on an Improved Unascertained Measurement and an Improved Game Theory

et al. 2023

View full text Add to dashboard Cite

A rockburst is a dynamic disaster that may result in considerable damage to mines and pose a threat to personnel safety. Accurately predicting rockburst intensity is critical for ensuring mine safety and reducing economic losses. First, based on the primary parameters that impact rockburst occurrence, the uniaxial compressive strength (σc), shear–compression ratio (σθ/σc), compression–tension ratio (σc/σt), elastic deformation coefficient (Wet), and integrity coefficient of the rock (KV) were selected as the evaluation indicators. Second, an improved game theory weighting method was introduced to address the problem that the combination coefficients calculated using the traditional game theory weighting method may result in negative values. The combination of indicator weights obtained using the analytic hierarchy process, the entropy method, and the coefficient of variation method were also optimized using improved game theory. Third, to address the problem of subjectivity in the traditional unascertained measurement using the confidence identification criterion, the distance discrimination idea of the Minkowski distance was used to optimize the identification criteria of the attributes in an unascertained measurement and was applied to rockburst prediction, and the obtained results were compared with the original confidence identification criterion and the original distance discrimination. The results show that the improved game theory weighting method used in this model makes the weight distribution more reasonable and reliable, which can provide a feasible reference for the weight determination method of rockburst prediction. When the Minkowski distance formula was introduced into the unascertained measurement for distance discrimination, the same rockburst predictions were obtained when the distance parameter (p) was equal to 1, 2, 3, and 4. The improved model was used to predict and analyze 40 groups of rockburst data with an accuracy of 92.5% and could determine the rockburst intensity class intuitively, providing a new way to analyze the rockburst intensity class rationally and quickly.

show abstract

“…Currently, most studies on major railway engineering construction rely on traditional risk prevention and control methods [5][6][7]. These studies primarily focus on risk management, emphasizing a pre-construction analysis of explicit risk sources, predicting the probability and impact of risks, and formulating risk plans and contingency measures in advance to control and mitigate damage caused by disasters within an acceptable range.…”

Section: Introductionmentioning

confidence: 99%

Study on Resilience Evaluation for Construction Management of Major Railway Projects

Jiang,

Zhao,

Cai

et al. 2024

Buildings

View full text Add to dashboard Cite

The construction of major railway projects poses significant risks, which present considerable challenges to construction management. To accurately assess the level of construction management for these projects, this study incorporated resilience theory into the field. The grounded theory method was utilized to establish a resilience evaluation indicator system for managing a major railway project construction. Additionally, a resilience evaluation model based on the Analytic Hierarchy Process (AHP) and fuzzy comprehensive evaluation method was proposed. This model was applied to evaluate the construction management resilience of a major railway project located in the mountainous region of southwest China. The results indicated that the project exhibits a very high overall level of construction management resilience. Specifically, it demonstrates high levels of ability to monitor and warn, an ability to resist absorption, and an ability to respond to emergencies. Additionally, it showcases high levels of ability to recover and rebuild, and an ability to learn to adapt. The evaluation results were consistent with the actual situation and verified the correctness and reliability of the method. Based on the aforementioned research findings, this paper puts forward recommendations on material redundancy and resource security from a resource perspective, and suggestions on organizational optimization and personnel capacity improvement from a subject perspective, thus indicating directions for enhancing the management level of major engineering railway constructions.

show abstract

Detection Model for Unbalanced Bidding in Railway Construction Projects: Considering the Risk of Quantity Variation

Cited by 6 publications

References 19 publications

Identifying Critical Dispute Causes in the Construction Industry: A Cross-Regional Comparative Study between China and the UK

Identifying Critical Dispute Causes in the Construction Industry: A Cross-Regional Comparative Study between China and the UK

A Novel Method for Predicting Rockburst Intensity Based on an Improved Unascertained Measurement and an Improved Game Theory

Study on Resilience Evaluation for Construction Management of Major Railway Projects

Contact Info

Product

Resources

About