论文部分内容阅读
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 safety assessment model for the ruins of building structures can effectively serve the emergency relief work in earthquake-stricken areas without wasting a lot of manpower and material resources. For the most disastrous brick-concrete structure in each of the previous earthquakes, a rescue and safety assessment model was established. According to the research status quo and demand analysis of the rescue safety assessment model of the brick-concrete structure rubble, the method and process of establishing the safety assessment model by adopting the BP neural network model are studied. The main points of the factors influencing the safety assessment model and the principle of safety grade determination are analyzed. In the actual rescue case, the model was trained by MATLAB, and the established model was verified by examples and the example calculation. The results of model verification and example calculation show that the proposed model can evaluate the safety assessment of brick-concrete structure rubble without any need of accurately investigating the mechanism of collapse of the brick-concrete structure. The model also has the evaluation results Accurate, easy to operate, as well as to facilitate the practical application of the project’s salient features.