The paper investigates seismic response control of bridges with nonlinear tuned vibration absorbers (n-TVAs). A three-span continuous bridge is used as case study. The n-TVAs are designed to act in both longitudinal and transverse directions of the bridge. The n-TVAs are modelled as inelastic springs with bilinear hysteretic behavior. A simple and effective method to design the parameters of the n-TVAs for controlling structural displacement is presented. The performance of the proposed n-TVAs is compared with the optimum linear TVAs (o-TVAs) and elasto-plastic bilinear TVAs (bn-TVAs). The results show that the n-TVAs are at least as effective as o-TVAs in controlling structural response. Because the n-TVAs do not require additional dashpots like the o-TVAs, they provide a more economical solution. It is observed that although effective in controlling structural response, their stroke is of the same order as that of o-TVAs. Addition of a viscous dashpot to the device is found to reduce their stroke, although accompanied by an inherent detrimental effect on the structural control performance.

本文研究了具有非线性调谐减振器 (n-TVA) 的桥梁的地震响应控制。三跨连续桥被用作案例研究。n-TVA 设计用于在桥梁的纵向和横向两个方向上起作用。n-TVA 被建模为具有双线性滞后行为的非弹性弹簧。提出了一种简单有效的方法来设计控制结构位移的 n-TVA 参数。将所提出的 n-TVA 的性能与最佳线性 TVA (o-TVAs) 和弹塑性双线性 TVAs (bn-TVAs) 进行比较。结果表明，在控制结构响应方面，n-TVA 至少与 o-TVA 一样有效。由于 n-TVA 不需要像 o-TVA 那样的附加缓冲器，因此它们提供了更经济的解决方案。据观察，虽然在控制结构反应方面有效，但它们的中风与 o-TVA 的中风顺序相同。发现向装置添加粘性缓冲器可以减少它们的行程，尽管伴随着对结构控制性能的固有不利影响。