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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。
Based on the Eulerian beam vibration theory and the least square method, the moving load on the bridge is proposed using the B-spline approximation method. The bridge deflection is identified by the B-spline function, and the bridge modal response is identified by the modal equation of the beam and the least squares method. Computer simulation was carried out and satisfactory results were obtained. The method has strong practicability and anti-noise ability.