The long-span bridge structures are loaded by service loads including traffic and/or wind loads almost every day. The earthquake load may occur on the bridges simultaneously except for these two common service loads. The vibration response of long-span bridges under earthquake and service loads usually exceeds the expected values. Therefore, the suppressed system should be extensively studied to control the vibration of the bridges. In the work, a pounding tuned mass damper (PTMD) system was designed, which can be effectively used for the dissipation of impact energy. It is mainly made up of a tuned mass and an additional limit device. Based on the earthquake/wind/traffic/bridge coupled system, the numerical simulation of multiple PTMDs (MPTMDs) was carried out. Different parameters of MPTMDs were studied including different numbers, mass ratio, pounding stiffness, and the gap values. The simulations show that the MPTMDs are very effective in suppressing the displacements of the bridge caused by both the traffic flows/wind and traffic/earthquake, and the suppressing effectiveness for bridge vibration under traffic and earthquake is more than that under traffic and wind.

大跨度桥梁结构几乎每天都承受包括交通和/或风荷载在内的服务荷载。除这两种常见的使用荷载外，桥梁上还可能同时发生地震荷载。大跨桥梁在地震和使用荷载作用下的振动响应通常会超出预期值。因此，应广泛研究抑制系统以控制桥梁振动。在工作中，设计了一种冲击调谐质量阻尼器（PTMD）系统，该系统可以有效地用于消散冲击能量。它主要由调谐质量和附加限位装置组成。基于地震/风/交通/桥梁耦合系统，开展多PTMD（MPTMD）数值模拟。研究了MPTMD的不同参数，包括不同的数量、质量比、冲击刚度和间隙值。仿真结果表明，MPTMD对于抑制交通流/风和交通/地震引起的桥梁位移都非常有效，并且对交通和地震作用下桥梁振动的抑制效果优于交通和风作用下的桥梁振动。