基于静态应变及位移测量的结构损伤识别法

针对桥梁健康监测中结构参数识别所需的精度以及算法稳定性，探讨了基于静态应变及位移测量的结构刚度参数评估技术，由于量测住处的有限以及测量噪声的干扰，算法所建立的方程往往是一个病态的非线性方程。通过梯度法与Ｇauss-Newton法以及Monte-Carlo法的综合运用可有效解决这一问题，数值模拟实验的结果表明：只要测点布置合理、加工工况足够，基于结构静态响应的参数识别效果相当理想。

Damage Detection of Structures Based on Static Response

A damage detection algorithm based on static displacement and static strain measurements is developed for the health monitoring of bridges which needs high precision and stability in the procedure. As the noise presence in the test and the limit of measurement information, non-linear ill-conditioned equations set would be common in the procedure of parameter identification. A heuristic method of synthetically using Gauss-Newton and gradient and Monte-Carlo formula is presented for solving the problem. Numerical analysis indicates that results of the aforementioned algorithm based on static test are perfect on the premise of sufficient measurement information.