基于二叉决策图的建筑施工事故流变强度测定

发布时间：2018-11-15 22:05

【摘要】：建筑施工行业属于高危行业,揭示其施工事故衍生、发展、衰亡规律是施工安全管理的重要内容。根据施工事故形成机理,系统分析了安全事故发展过程中的流变特征,提出流变强度概念;在故障树分析法基础上,结合二叉决策图(BDD,Binary Decision Diagram)的结构与算法,给出安全事故流变强度与基本事件重要度的计算方法;并以建筑施工过程中脚手架安全事故为例进行事故流变强度测定。结果表明:该安全事故流变强度为0.002 098 41,属于较低水平。前期脚手架质量与安装规范的重要度远大于其它不安全事件的重要度,与实际情况相符。验证了BDD结构与算法测定事故流变强度的科学性、可行性、高效性,为提高建筑施工安全管理水平提供依据。
[Abstract]:Construction industry belongs to high risk industry. It is an important content of construction safety management to reveal the derivation, development and decline of construction accidents. According to the formation mechanism of construction accidents, the rheological characteristics in the development process of safety accidents are analyzed systematically, and the concept of rheological strength is put forward. On the basis of fault tree analysis, combined with the structure and algorithm of binary decision diagram (BDD,Binary Decision Diagram), the method of calculating the rheological strength of safety accident and the importance of basic events is presented. Taking the scaffold safety accident as an example, the rheological strength of the accident was measured. The results show that the rheological strength of the safety accident is 0.002 98 41, which belongs to a low level. The importance of early scaffold quality and installation specification is much greater than that of other unsafe events, which is consistent with the actual situation. It is verified that the structure and algorithm of BDD are scientific, feasible and efficient in determining the rheological strength of accidents, which provides the basis for improving the level of construction safety management.
【作者单位】：三峡大学水利与环境学院;三峡地区地质灾害与生态环境湖北省协同创新中心;
【基金】：国家自然科学基金资助项目(51379110)
【分类号】：TU714

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