建筑外墙砖饰面安全风险评估模型
Safety Risk Assessment Model for Exterior Wall Tiles Facing of Buildings
杨霞1
作者信息
- 1. 上海市房地产科学研究院,上海 200031
- 折叠
摘要
建筑外墙砖脱落事故频发,不仅破坏了建筑外观,更是危及居民人身安全.然而砖饰面损坏因素复杂,目前缺少可量化的风险评估模型.基于影响显著、易获取、可量化原则,选取距离上一次全面维修的年限、裂缝数量和立面空鼓面积比,作为外墙砖饰面安全风险评估的量化指标.通过对 74 个项目进行统计分析,综合运用信息量权重法和专家打分法,确定距离上一次全面维修的年限、裂缝数量和立面空鼓面积比的权重分别为 0.20,0.41,0.39.最后通过项目验证,根据提出的安全风险计算模型,当安全风险分值达到 40 分时,外墙砖饰面发生高坠的风险概率较大.
Abstract
Frequent accidents of tiles falling off the exterior walls not only damage the appearance of buildings,but also endanger the personal safety of residents.However,the factors of tiles facing damage are complex,and there is a lack of quantifiable risk assessment model.Based on the principles of significant impact,easy access and quantification,the years since the last comprehensive maintenance,the number of cracks and the ratio of hollow area on the facade are selected as quantitative indicators of exterior wall tiles facing safety risk assessment.By using the information weight method and the expert scoring method,74 projects are counted,the weights of the years since the last comprehensive maintenance,the number of cracks and the ratio of hollow area on the facade are 0.20,0.41 and 0.39 respectively.Finally,through project verification,according to the proposed safety risk calculation model,when the safety risk score reaches 40 points,the risk probability of the exterior wall tiles facing falling is high.
关键词
外墙砖饰面/脱落/评估/安全风险/信息量权重法/模型Key words
exterior wall tiles facing/falling off/assessment/safety risk/information weight method/model引用本文复制引用
出版年
2024
NETL
NSTL
万方数据