【摘要】 基于移动荷载识别理论并根据移动常力轴载特点,提出了一种用于准确识别移动常力轴载的快速算法。两轴12种组合工况和多轴10种组合工况的荷载识别仿真计算结果表明:该快速方法的计算量不足时域法的1/2,识别精度很高且基本不受噪声影响,尤其对于多轴荷载识别,该快速算法效率更高,这对于桥梁移动荷载的在线识别十分有利。更多还原

【Abstract】 Based on the theory of moving force identification and the characteristic of moving constant axle loads,a new fast and simplified algorithm is proposed for the moving force identification.Under the 12 combination cases of two-axle loading as well as the 10 combination cases of(multi-)axle loading,some numerical simulations were carried out and compared with the existing time domain method(TDM).The illustrated results show that the computation cost of the proposed method is less than half of the TDM cost,especially for the cases of(multi-)axle loading.The identification accuracy is significantly higher than that of the TDM,and it is almost not affected by the noise involved in the measured response data.The proposed algorithm is beneficial to the real time analysis of moving force identification in the field.更多还原