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DAMAGE PREDICTION CONCEPT BASED ON MONITORING AND NUMERICAL MODELLING OF A MEDIEVAL CHURCH

机译：基于中世纪教堂监测和数值建模的损伤预测概念

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The DAmage MONitoring system (DAMON) specialized in prediction of the damage development in historical buildings is under development. It includes the following modules:rn1. identification of the global structural model on the basis of the measured response to thermal loading (climatic day cycles),rn2. optimal location of a limited number of sensors focused on detection of the expected variations of loading conditionsrn3. detection of the current state of settlement and other variation of loading conditions;rn4. updating strains and stresses due to the current, modified loading conditions;rn5. prediction of the damage development and eventual step back to modification of the sensor system.rnIt was found that more precise identification of the current loading conditions is very important for reliable evaluation of the structural response. Usually, the number of sensors measuring the variation of loading conditions (e.g. settlement) is limited and therefore, the missing information has to be determined indirectly. The DAMON system enables the progressive damage analysis curried for relatively large buildings, thanks to the VDM based FEM simulation of crack propagation, without, need for remeshing and stiffness matrix reformations in the analysis process.
机译：正在开发专门用于预测历史建筑中的破坏发展的DAmage监控系统（DAMON）。它包括以下模块：rn1。根据测得的对热负荷的响应（气候日周期），确定整体结构模型，rn2。有限数量的传感器的最佳位置侧重于检测负载条件的预期变化。检测沉降的当前状态和加载条件的其他变化; rn4。由于当前修改的加载条件而更新应变和应力; rn5。预测损坏的发展并最终退回到修改传感器系统。发现更准确地识别当前的载荷条件对于可靠地评估结构响应非常重要。通常，测量装载条件变化（例如沉降）的传感器的数量是有限的，因此，必须间接确定丢失的信息。由于基于VDM的裂纹扩展的FEM模拟，DAMON系统能够对相对较大的建筑物进行渐进式损伤分析，而在分析过程中无需重新网格化和刚度矩阵重整。

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