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TLD在基底运动下内部液体对基底结构的作用可由分析液体运动或直接通过试验测定得到,将所得的TLD对基底结构作用与基底运动的关系直接应用到结构动力平衡方程中,求得结构系统在安装TLD后在外力作用下的响应。根据这一思路,建立了TLD减振作用的分析步骤和表达式。运用该方法对JZ20-2MUQ平台利用TLD减冰振进行了试验和分析研究。首先测定在JZ2O-2MUQ平台减冰振中采用的原型TLD的基底剪力关于基底位移的传递函数和阻尼系数,将测量值代入在安装TLD后的结构响应关于外力传递函数表达式中求得其值,由安装TLD所带来的结构响应传递函数值变化推算减振效果。此外,通过JZ2O-2MUQ平台利用TLD减振的室内模拟和现场试验验证该方法预报结果是可靠的。
The effect of internal fluid on the structure of the basement under the TLD can be obtained by analyzing the movement of the fluid or by directly determining the relationship between the effect of the basement and the movement of the basement obtained from the TLD directly on the dynamic balance equation of the structure, Response to external forces after installation of TLD. According to this idea, the analysis steps and expressions of the damping effect of TLD are established. The method is used to test and analyze the JZ20-2MUQ platform by using TLD de-icening. Firstly, the transfer function and the damping coefficient of the base shear of the prototype TLD used in de-icing of the JZ2O-2MUQ platform with respect to the substrate were measured. The measured values were substituted into the structural response after the TLD was installed. For the expression of the external force transfer function, Value, the structural response transfer function value change caused by the installation of the TLD to calculate the damping effect. In addition, through the JZ2O-2MUQ platform, indoor simulation and field tests of TLD damping are used to verify the method’s prediction results are reliable.