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How Tower Cranes Work Private

2 months ago Multimedia Sâmraông   18 views

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How Tower Cranes Work

Tower cranes are extensively used for lifting materials in construction sites. Most construction sites are very confined and close to public. Tower crane accidents not only hazard workers in construction sites, but also pedestrians. This paper investigates tower crane safety in related to the understanding and degree of executing statutory requirements and non-statutory guidelines for the use of tower cranes in the Hong Kong construction industry. A questionnaire survey and structured interviews are conducted. It is found that human factors are attributed to tower crane safety. Indolent performance of requirements or responsibilities of practitioners in tower crane operations is found. Inadequate training and fatigue of practitioners are one of the main reasons causing unsafe practices of tower crane operations. Recommendations for improving safety performance in tower crane operations are also discussed.

Research highlights

This paper investigates tower crane safety in related to the understanding and degree of executing statutory requirements and non-statutory guidelines for the use of flat top tower crane in the Hong Kong construction industry. It is found that human factors are attributed to tower crane safety. Indolent performance of requirements or responsibilities of practitioners in tower crane operations is found.  Inadequate training and fatigue of practitioners are one of the main reasons causing unsafe practices of tower crane operations.

Weather monitoring in construction sites is important, but especially when luffing jib tower crane are used. A strong gust of wind can destabilize the load and structure, causing a collapse. Project managers should constantly check weather forecasts, and avoid lifting operations with unfavorable weather. A weather monitoring system at the project sites can warn about dangerous wind conditions that are not covered in forecasts.

Tower crane accidents frequently occur in the construction industry, often resulting in casualties. The utilization of tower crane spare parts involves multiple phases including installation, usage, climbing, and dismantling. Moreover, the hazards associated with the use of tower cranes can change and be propagated during phase alternation. However, past studies have paid less attention to the differences and hazard propagations between phases. In this research, these hazards are investigated during different construction phases. The propagation of hazards between phases is analyzed to develop appropriate safety management protocols according to each specific phase. Finally, measures are suggested to avoid an adverse impact between the phases. A combined method is also proposed to identify hazard propagation, which serves as a reference and contributes to safety management and accident prevention during different tower crane phases in the construction process.

Furthermore, although different hazards may occur during different phases, previous works often focused on the usage phase [9, 10]. Some researchers have investigated dynamic structural performance, the interaction effects of multitower crane operation, the load, and the environment of the tower crane in the usage phase [11–13]. In addition, the factors that impact safety during the installation (including climbing) and dismantling phases have been analyzed [14]. However, there are few comparative studies on the multiple phases of tower crane mast section on the construction site. Equally important are the interrelationships between the hazards associated with different phases, which have not been investigated to date. In this paper, we address the aforementioned limitations in the literature.