Digital Twin-Based Risk Control during Prefabricated Building Hoisting Operations

Abstract

Prefabricated buildings have advantages when it comes to environmental protection. However, the dynamics and complexity of building hoisting operations bring significant safety risks. Existing research on hoisting safety risk lacks a real-time information interaction mechanism and lacks scientific control decision-making tools based on considering the correlation between safety risks. Digital twin (DT) has the advantage of real-time interaction. This paper presents a safety risk control framework for controlling prefabricated building hoisting operations based on DT. In the case of considering the correlation of the safety risk index of hoisting, the safety risk hierarchy model of hoisting is defined in the process of building the DT model. The authors have established a Bayesian network model into the process of the integrated analysis of the digital twin mechanism model and monitoring data to realize the visualization of the decision analysis process of hoisting safety risk control. The key degree of the indirect inducement variable to direct inducement variable was calculated according to probability. The key factor leading to the occurrence of risk was found. The effectiveness of the hoisting safety risk control method is verified by a large, prefabricated building project. This method provides decision tools for hoisting safety risk control, assists in formulating effective control schemes, and improves the efficiency of information integration and sharing.

Identification and analysis of hoisting safety risk factors for IBS construction based on the AcciMap and cases study

“…The Hoisting of IBS construction has the following characteristics: (1) The components have considerable potential energy and are large, significantly raising the risk level [ 50 , 51 ]. (2) The multi-dimensional hoisting process links machines, workforce, technology, environment, and prefabricated components [ 52 , 53 ]. (3) The construction site is equipped with lifting machinery, such as a high-rise tower crane capable of handling heavy loads [ 54 , 55 ].…”

“…In addition to fatalities, the personal injuries it brings include fractures, sprains, and strains, leading to long-term incapacity and reduced productivity; the resulting project delays and cost overruns cannot be underestimated [ 78 , 139 , 140 ]. A practical risk management framework is the basis for risk control [ 52 ]. Some scholars believe it needs to include prefabricated components, hoisting machinery, operating environment, operating personnel, and the cost of safety measures based on production elements [ 77 ].…”

Developing a risk framework for assembly construction based on stakeholder theory and structural equation modelling

“…Questionnaires with a certain regularity, high consistency, and incomplete answers were excluded, making 396 questionnaires available for subsequent analyses. To develop an SEM, it is recommended that the sample size be at least 200 and at least ten times as large as the observed variables [ 45 ]. With 35 observed variables, a sample size 396 was deemed adequate for analysis.…”

A Bibliometrics-Based Systematic Review of Safety Risk Assessment for IBS Hoisting Construction

“…(2) Lack of specific guidance and standards: The lack of comprehensive and standardized guidance specific to lifting construction poses a challenge to risk assessors [22,84]. Generic risk assessment methods may not address the specific hazards and complexities of lifting operations, resulting in the inadequate identification and assessment of risks.…”

“…This highlights the urgent need to generalize risk factors. While various studies use different assessment methods, there is a lack of comparison between them [22][23][24][25]. In fact, the niche area of hoisting in IBS construction has only attracted the interest of researchers in recent years.…”