The steel–concrete–steel sandwich structures are usually composed of concrete core and face steel plates. This paper presented the dynamic response of the curved steel–concrete–steel (SCS) sandwich shells subjected to blast loading. The bolts were employed to connect the face steel plates and the concrete. Numerical model was established based on LS-DYNA and the accuracy of the modelling method was verified against existing blast test. The displacement histories, damage of concrete and energy absorption capability of the shell were obtained from the numerical calculations and discussed. Different failure modes of the curved SCS sandwich shell under various loads were obtained from numerical results, i.e., local deformation of the shell for the case of close-in detonations and buckling of steel plates for the case of far-field detonations. It was noted that the concrete debris can be restrained by the face steel plates with good ductility. Numerical results showed that the energy absorption from concrete is higher under close-in detonations on the ground. The effects of charge weight, steel plate thickness, concrete thickness and rise height on the dynamic response of curved SCS sandwich shells were also analyzed and discussed in detail. The curved SCS sandwich shell with thicker back steel plate showed better blast resistant performance. Moreover, the damage of curved shell was more serious if the rise height to span ratio (R_r-s) is beyond the range of 0.16–0.25.

钢-混凝土-钢夹心结构通常由混凝土芯和面板组成。本文介绍了爆炸载荷作用下的弯曲钢-混凝土-钢（SCS）夹层壳的动力响应。螺栓用于连接面板和混凝土。基于LS-DYNA建立了数值模型，并通过现有爆破试验验证了建模方法的准确性。通过数值计算得到了位移历史，混凝土的破坏和壳体的能量吸收能力，并进行了讨论。从数值结果获得了弯曲的SCS夹层壳在不同载荷下的不同破坏模式，即，对于近爆起爆，壳发生局部变形，对于远场起爆，发生钢板屈曲。注意到可以通过具有良好延展性的面板来限制混凝土碎屑。数值结果表明，在地面近距离起爆下，混凝土的能量吸收较高。还分析和讨论了装料重量，钢板厚度，混凝土厚度和上升高度对弯曲的SCS夹层壳动力响应的影响。弯曲的SCS三明治壳和较厚的背面钢板显示出更好的防爆性能。而且，如果上升高度与跨度之比（还对钢板厚度，混凝土厚度和上升高度对弯曲的SCS夹心壳的动力响应进行了分析和讨论。弯曲的SCS三明治壳和较厚的背面钢板显示出更好的防爆性能。而且，如果上升高度与跨度之比（还对钢板厚度，混凝土厚度和上升高度对弯曲的SCS夹心壳的动力响应进行了分析和讨论。弯曲的SCS三明治壳和较厚的背面钢板显示出更好的防爆性能。而且，如果上升高度与跨度之比（R _r-s）超出0.16-0.25的范围。