砖混结构废墟救援安全评估BP模型研究

Research on Security Evaluation BP Model of Brickconcrete Structure Ruins

建筑结构废墟救援安全评估模型可在不浪费大量人力物力的条件下有效地服务于地震灾区应急救援工作。针对历次地震中破坏最为严重的砖混结构建立了废墟救援安全评估模型。根据砖混结构废墟救援安全评估模型的研究现状探究和需求分析,研究了采用BP神经网络模型建立安全评估模型的方法和过程,分析了安全评估模型影响因素的划分要点和安全等级判定原则,基于实际救援案例采用MATLAB对模型进行了训练,并对所建立的模型进行了实例验证和算例计算。模型验证和算例计算结果表明所建立的砖混结构废墟安全评估模型可在不需要精确探究结构倒塌机理的基础上直接应用于砖混结构废墟救援的安全评估工作,且该模型还具有评估结果准确、操作简便,以及便于工程实际应用的显著特点。

The security evaluation model for structure ruins rescue can effectively serve earthquake emergency rescue work under the condition of no waste a mass of manpower and material resources. The rescue security evaluation model for brick-concrete structure damage seriously in earthquakes is established. Based on research status and requirement analysis of rescue security evaluation model,BP neural network model is adopted to establish the safety assessment methods and procedures,dividing points and safety level judging principle of influence factors for evaluation model are analyzed. The model is trained by using MATLAB based on the actual rescue cases and validated as well as calculated by examples. The results of model validation and example calculation show that the established rescue security evaluation model for brick-concrete structure can directly applied to the safety evaluation work without exploring accurately the mechanism of structure collapse of brick-concrete structure. And the model has the following marked characteristics such as accurate results,easy operating,and convenient for engineering application.