中文摘要：

基于简化连续正交异性板模型和特征频率灵敏度分析技术，提出了一种选煤厂房楼板抗振优化设计方法。首先将具分布参数的无限自由度体系简化为多自由度体系，再根据刚度矩阵中每个元素相对于特征频率的灵敏度分析结果，得到动荷载激励下的梁板组合楼盖抗振优化设计结果。有限元动力分析与现场实测结果表明，该优化设计结果具有精确可靠的优点，与其他优化方法相比．本优化方法可 大大减少计算时间，更适于在实际中推广应用。

英文摘要：

A new anti-vibration optimization method for floor of Coal Preparation Plant is presented in this paper. This method is based on a simply continuous orthotropic plate model and the eigenfrequency sensitivity analysis technique. According to the sensitivity analysis results of eigenfrequency to each stiffness parameter in the stiffness matrix, the anti-vibration optimization design of the slab/beam composite floor system under dynamic excitation is obtained. And the steady-state dynamic response of the optimization design is achieved by using finite-element-method to evaluate the anti-vibration effect. Numerical analysis results and experimental measurements show that the optimization design possesses the advantage of exactitude and reliability; and the time spent by the optimization method is reduced notably compared with other optimization approach.