Transition zones between railway tracks and bridge decks can cause higher dynamic impacts. A solution is smoothly changing the track stiffness by gradually mixing steel furnace slag into the stone ballast. A nominated bridge transition zone is divided into 5 blocks of 7 meters long, with the mixing percentages of 0%, 25%, 50%, 75% and 100%. The mechanical behaviors of furnace slag-ballast combinations (FS-BCs) were studied using experiments of shear strength test, Los Angles abrasion index and plate load test. Furthermore, the dynamic behavior of bridge transition zone with FS-BCs blocks was investigated using a field validated FEM model. Results show that the 100%, 75%, 50% and 25% furnace slag by weight of ballast can increase the shear strength and ballast layer bending modulus by 13%, 12%, 9% and 7% at speed of 300 km/h compared with those of the stone ballast. The FEM study shows that rail deflections are reduced about 20%, 14%, 21% and 16% at speed of 300 km/h corresponding to 100%, 75%, 50% and 25% FS-BCs and accelerations are significantly reduced as well as increasing FS content of each block in bridge transition zone so that a smooth bridge transition zone can be achieved.

铁路轨道和桥面之间的过渡区会导致更高的动态影响。一种解决方案是通过将钢炉渣逐渐混合到石碴中来平滑地改变轨道刚度。一个指定的桥梁过渡区分为5个7米长的区块，混合比例分别为0%、25%、50%、75%和100%。通过剪切强度试验、洛杉矶磨损指数和板载试验，研究了炉渣-道砟组合（FS-BCs）的力学行为。此外，使用现场验证的 FEM 模型研究了具有 FS-BCs 块的桥梁过渡区的动态行为。结果表明，100%、75%、50%和25%的炉渣按重量计道碴可提高抗剪强度和道碴层弯曲模量13%、12%、与石碴相比，在 300 公里/小时的速度下分别降低了 9% 和 7%。FEM 研究表明，在 300 公里/小时的速度下，轨道挠度降低了约 20%、14%、21% 和 16%，对应于 100%、75%、50% 和 25% FS-BC，加速度显着降低，如下所示以及增加桥过渡区中每个块的FS含量，从而可以实现平滑的桥过渡区。