基于SEM的建筑工人疲劳对不安全行为影响机理

Research on the impact of construction workers fatigue on unsafe behaviors based on SEM

建筑行业属于安全事故频发的劳动密集型产业,建筑工人在复杂环境中长时间的作业使其容易处于疲劳状态,进而影响个人做出不遵守施工规范的不安全行为。为研究建筑工人疲劳对不安全行为的影响机理,将建筑工人疲劳划分为体力疲劳、脑力疲劳与心理疲劳3个维度,并选取安全意识与班组安全氛围作为中介变量,借鉴成熟量表设计符合建筑工人群体的调查问卷,运用SPSS 22.0进行信度分析,采用Mplus 8.3对数据进行验证性因子分析,建立SEM模型并进行验证。结果表明:建筑工人疲劳的3个维度直接对不安全行为有着正向显著影响,其中体力疲劳影响程度最大,心理疲劳次之;建筑工人疲劳间接通过安全意识与班组安全氛围2个中介变量对不安全行为产生影响,其中班组安全氛围比安全意识的影响程度更大。

The construction industry is a labor-intensive industry with frequent safety accidents.The long-term operation of construction workers in complex environments makes them prone to fatigue,which in turn affects individuals’unsafe behaviors that do not comply with construction regulations.In order to study the influence mechanism of construction workers fatigue on unsafe behaviors,construction workers fatigue was divided into three dimensions of physical fatigue,mental fatigue and psychological fatigue,and safety awareness and team safety atmosphere were selected as mediating variables.The questionnaire of the worker group was analyzed with SPSS 22.0 for reliability analysis,and Mplus 8.3 was used for confirmatory factor analysis of the data.An SEM was established and verified.The results show that the three dimensions of construction workers fatigue directly have a significant positive impact on unsafe behaviors,of which physical fatigue has the largest impact,followed by psychological fatigue;construction workers fatigue has an indirect impact through the two mediating variables of safety awareness and team safety atmosphere.Safety behavior has an impact,and the safety atmosphere of the team is more important than the safety awareness.