A special trackwork assembly including a special trackwork body formed to support wheels of a train moving over a running surface portion of an exterior surface of the special trackwork body that generate traffic-related vibrations of the special trackwork body having one or more frequencies of interest. The special trackwork assembly also includes one or more tuned mass dampers secured to the special trackwork body and formed to vibrate, in response to the traffic-related vibrations of the special trackwork body, at the frequency of interest, to at least partially dampen the traffic-related vibrations of the special trackwork body.

A special trackwork assembly including a special trackwork body formed to support wheels of a train moving over a running surface portion of an exterior surface of the special trackwork body that generate traffic-related vibrations of the special trackwork body having one or more frequencies of interest. The special trackwork assembly also includes one or more tuned mass dampers secured to the special trackwork body and formed to vibrate, in response to the traffic-related vibrations of the special trackwork body, at the frequency of interest, to at least partially dampen the traffic-related vibrations of the special trackwork body.

A core-inlaid high manganese steel frog structure includes a high manganese steel frog body and an inlaid core. The high manganese steel frog body includes a swing track connecting section, a frog central section and a frog-and-track connecting section. The wing track connecting section and the frog-and-track connecting section are respectively arranged on front and rear ends of the frog central section. A mounting groove for cooperatively mounting the inlaid core is arranged in front of the frog central section. The high manganese steel frog body and the inlaid core are detachably connected. The high manganese steel frog body and the inlaid core are detachably connected, which facilitates replacement of vulnerable parts, saves cost, and meets user requirements. The material and production procedure for the high-manganese steel frog body can be different from those for the inlaid core, which helps further improve the performance of the inlaid core.

A core-inlaid high manganese steel frog structure includes a high manganese steel frog body and an inlaid core. The high manganese steel frog body includes a swing track connecting section, a frog central section and a frog-and-track connecting section. The wing track connecting section and the frog-and-track connecting section are respectively arranged on front and rear ends of the frog central section. A mounting groove for cooperatively mounting the inlaid core is arranged in front of the frog central section. The high manganese steel frog body and the inlaid core are detachably connected. The high manganese steel frog body and the inlaid core are detachably connected, which facilitates replacement of vulnerable parts, saves cost, and meets user requirements. The material and production procedure for the high-manganese steel frog body can be different from those for the inlaid core, which helps further improve the performance of the inlaid core.

A special trackwork assembly including a special trackwork body formed to support wheels of a train moving over a running surface portion of an exterior surface of the special trackwork body that generate traffic-related vibrations of the special trackwork body having one or more frequencies of interest. The special trackwork assembly also includes one or more tuned mass dampers secured to the special trackwork body and formed to vibrate, in response to the traffic-related vibrations of the special trackwork body, at the frequency of interest, to at least partially dampen the traffic-related vibrations of the special trackwork body.