钢筋混凝土工业文物建筑结构安全等级评定

Safety Grade Assessment of Reinforced Concrete Industrial Heritage Building Structure

越来越多拥有旧工业建筑群的旧址被列为全国重点文物保护单位,为更加科学地对其结构安全等级进行评定,以案例推理方法(CBR)为基础,引入蛛网模型,建立单层钢筋混凝土工业文物建筑结构安全等级评定的新方法。具体为:(1)根据225份单层钢筋混凝土旧工业建筑结构检测报告,并结合12部国家工业建筑和文物建筑相关标准,建立结构安全等级范例库,并构建包含8个指标的结构安全性指标体系;(2)应用熵权法确定8个指标权重,并以此构建各范例蛛网模型;(3)计算蛛网的面积相似度和形状相似度,检索出与目标范例最为相似的源范例。研究表明:该模型评定结果与实际结构安全等级评定结果一致,能全面真实地反映单层钢筋混凝土工业文物建筑的安全状态,为地方政府在工业文物建筑保护方案决策中提供参考。

More and more old sites with old industrial buildings are listed as national key cultural relics protection units.In order to evaluate its structural safety level more scientifically,based on the CBR theory,a cobweb model is introduced to establish a new method to evaluate its structural safety level.Specifically:(1)Based on 225 single-story old industrial plant structure inspection reports,combined with 12 national industrial building and cultural heritage building related standards,a structural safety level library is established,and a structural reinforcement safety index system is constructed,containing 8 indicators;(2)The weight of these 8 indicators is determined by applying the entropy weight method,and it is used to build a spider web model for each example;(3)The source example,most similar to the target example,is retrieved by comparing the comprehensive and the cobweb graphics similarity between the target example and the source example.The result of the model is consistent with the result of the actual structure safety grade evaluation,and it can reflect the safety state of the single-layer concrete industrial heritage building completely and truly,providing the reference for the local government in the decision-making of the Industrial Heritage Building Protection Scheme.