摘要
基于欧拉梁振动理论及最小二乘法 ,提出了利用 B-样条函数逼近法识别桥上移动荷载。通过 B-样条函数拟合桥梁挠度识别桥梁模态响应 ,由梁的模态方程和最小二乘法识别桥上移动载荷。并进行了计算机仿真 ,获得了令人满意的效果。该方法具有很强的实用性和抗噪声干扰能力。
A B-spline function approaching method to identify moving force on a bridge deck is presented in this paper, which is based on the Euler beam vibration theory and the least-square method.The modal responses are firstly identified from beam deflection or moment through B-spline function approaching,then the moving force is identified through the least square method and the modal equation.The computation simulations have been done, and satisfied results are obtained. The method is practicable and lower sensitive to the noise.
出处
《石家庄铁道学院学报》
2003年第1期11-14,共4页
Journal of Shijiazhuang Railway Institute
基金
国家自然科学基金资助项目 ( 5 99780 2 6 )
