【摘要】 以主结构在整个地震过程中吸收的能量值最小作为优化准则,考虑了主结构阻尼的影响,通过非线性规划的数学方法得出TMD的最优频率比和最优阻尼比,并采用最小二乘法拟合出相应设计参数的数学表达式,提出了在地震随机作用下,基于能量法的TMD参数优化设计方法,并进一步分析了TMD质量比、阻尼比、频率比与主结构能量的影响关系。数值模拟结果表明,该方法与传统设计方法比较,主结构吸收的能量更小。更多还原

【Abstract】 A new optimal design method of TMD was presented based on the energy approach.In which the optimization criterion is to minimize the absorbed energy of the main structure during the earthquake.And the optimal frequency ratio and optimal damp ratio of TMD are gained by nonlinear programming method.Also the mathematics formula for corresponding parameter is formed by using the least square method.Furthermore the influence between the parameters of TMD and the energy of the main structure are analyzed.The results of numerical simulation indicate that,compared to traditional design method,the absorbed energy of the main structure is less.更多还原