为了探索钢波纹板-减压板的分析方法与力学特性，以一座设置了减压板的钢波纹板小桥为数值算例，通过刚度等效的方法建立了数值模型，验证了模型的合理性，并在此基础上分析了车辆荷载作用下减压板的力学特性。得到结论：设置减压板并不能有效降低钢波纹板结构在恒载作用下产生的内力，反而使结构内力更大；减压板能够有效降低车辆荷载对结构产生的弯矩，比未设置减压板的钢波纹板结构弯矩降低50%以上，但对结构所受轴力的影响不大；最不利的车辆荷载布置为最大轴重作用于拱顶，使钢波纹板产生最大弯矩，设计分析时应加以考虑。

To explore the mechanical properties of Corrugated Steel Plate with relieving slab, using a Corrugated Steel Plate as a numerical example, the numerical analysis model was established based on equivalent stiffness method and the model is proved reasonable. Furthermore, the mechanical properties of the Corrugated Steel Plate with relieving slab under vehicle loads are analyzed, and the conclusions were drawn: relieving slab can not effectively reduce the internal force of the Corrugated Steel Plate structure under dead load, maybe make the internal force of the structure higher; relieving slab can effectively reduce the bending moment of the structure under the vehicle loads, about 50% lower than which does not set a relieving slab, but the relieving slab has little effect on the axial force of the structure under the vehicle loads; the most unfavorable conditions is the maximum axial load act on the crown, which can produce the maximum bending moment and should be considered during design phase.