ABSTRACT

Construction is one of the most dangerous occupations. The most prominent reason for worker accidents is unsafe behavior, particularly rooted in the inability to recognize and appropriately respond to risk factors. Previous studies have investigated worker perception and comprehension of construction hazards and safety information in laboratory settings. A relationship has been found between workload and workers’ situation awareness (SA), a useful concept for understanding risk perception and comprehension. However, it is necessary to investigate the actual construction environment to increase the real-world applicability of the research results. This experimental study analyzed workers’ SA in relation to physical and mental workloads acquired while performing work at a construction site. Perception (Level-1-SA) and comprehension (Level-2-SA) were measured using the SA Global Assessment Technique as subjects walked inside a facility under construction and performed inspection or construction works. Statistically significant differences were found between perception and comprehension of safety-related information. It was also found that mental load negatively affected SA. This study provided external validation of previously investigated effects of workload on workers’ perception and comprehension of safety-related elements at real construction sites. The study’s findings can improve the understanding of workers’ safety behaviors and help suggest directions for safety management guidelines.

摘要

建筑是最危险的职业之一。工人事故最突出的原因是不安全的行为，尤其是无法识别和适当应对风险因素。以前的研究调查了工人在实验室环境中对施工危害和安全信息的感知和理解。已经发现工作量和工人的情境意识 (SA) 之间存在关系，这是理解风险感知和理解的有用概念。但是，有必要对实际的施工环境进行调查，以增加研究结果的实际适用性。本实验研究分析了工人的 SA 与在建筑工地工作时获得的体力和脑力工作量之间的关系。当受试者走进正在建设的设施并进行检查或施工工作时，使用 SA 全球评估技术测量感知 (Level-1-SA) 和理解 (Level-2-SA)。在对安全相关信息的感知和理解之间发现了统计学上的显着差异。还发现精神负荷对 SA 产生负面影响。这项研究为先前调查的工作量对工人在实际建筑工地对安全相关要素的感知和理解的影响提供了外部验证。该研究的结果可以提高对工人安全行为的理解，并有助于为安全管理指南提出方向。