To study the impact strength characteristics of granite under combined dynamic and static loading, an experimental loading system based on the split-Hopkinson pressure bar (SHPB) was developed. Impact loading at different strain rates was performed to study the stress and strain characteristics of granite at different confining pressures. From this, the impact strength characteristics under one-dimensional combined dynamic and static loading conditions were determined. The results show that the tested sample has higher anti-impact tensile strength during combined dynamic and static loading relative to purely static loading, with an amplitude increase of 80–280%. Under the same axial load, the size of rock fragments after failure decreases as dynamic load increases. In the case of impact failure, the failure mode of the rock when subjected to combined loading is tensile, and as the impact loading rate increases, the anti-impact strength increases from 17.7 to 23.18 MPa.

为了研究花岗岩在动，静载荷作用下的冲击强度特性，建立了基于分裂霍普金森压力杆（SHPB）的实验载荷系统。研究了不同应变速率下的冲击载荷，以研究花岗岩在不同围压下的应力和应变特性。据此，确定了一维动静组合载荷条件下的冲击强度特性。结果表明，与纯静态载荷相比，被测样品在动态和静态联合载荷下具有更高的抗冲击拉伸强度，幅度增加了80–280％。在相同的轴向载荷下，随着动载荷的增加，破坏后的碎石块尺寸会减小。如果发生碰撞失败，