Abstract:While using the assessment model of the degree of earthquake damage to buildings based on deformation and accumulated energy consumption, the buildings were divided into five state levels, and the environmental performance of the buildings was not studied, resulting in large errors in the evaluation results. A building information modeling (BIM)-based assessment model was designed in this study for evaluating the degree of building damage after an earthquake. The BIM-based evaluation method of the building environment was used to study the environmental performances of buildings. On this basis, the damage evolution equation was obtained based on the Mazars damage model of concrete under the triaxial condition, and the increment equation of damage evolution was obtained when the strain was greater than the damage threshold. Further, the concrete damage assessment model was constructed. It has been experimentally proved that the building structure is generally intact when the peak acceleration of the earthquake is less than 0.31g; however, when the peak acceleration is 0.61g, the building earthquake damage index exceeds 0.8, and the building collapses. The average error of the designed model was less than 0.03; the average evaluation time was 2.86 s, indicating that the designed model can effectively assess the degree of earthquake damage for a building and that the accuracy and efficiency are relatively high.
