二维结构纵向梁单元损伤识别

摘要

通过将柔度对角曲率指标扩展成二维结构梁单元的柔度对角值的二阶偏导数，从而将柔度对角曲率指标推广到了二维结构梁单元的损伤识别。通过一个简支梁桥的数值算例，验证了将柔度对角曲率指标用于二维结构梁单元损伤识别的可行性，计算出来的指标值能够准确识别出结构损伤位置，并且能够初步估计出损伤程度。%Through extending the flexibility diagonal curvature index into the two order partial derivative of flexibility diagonal values of 2D struc- ture beam element, so as to extend flexibility diagonal curvature index into the damage identification of 2D structure beam element. By a numeri- cal examples of simple supported beam bridge, tested the feasible of using flexibility diagonal curvature index for 2D structure beam element damage identification, the calculated values could accurately identify the location of structural damage, and could preliminary estimate the damage degree.