| The dynamic behavior of a Presstressed Concrete（PC) multi-girder with a three-layered absorbing system under impact loading was experimentally studied．To have a comparative study on the perfor-mance of the three-layered absorbing system，the experiment using the single layered 90 thick sand cushion was also executed．[*]From this study，the following resurts were obtained：[*]1．Based on the gorder bending moment of impacted girder，it can be concluded that the absorbing capacity of the three-layered absorbing system for the collisional energy was almost 6.7 times that of the single layered sand cushion．[*]2．Since the three-layered absorbing system could effectively absorb and disperse a impact load，it is clear that this type of absorbing system could be applied to protect some kind of unclear power plants from impact loading． |
