To know the failure modes of space lattice arch structure subjected to blast load, the dynamic finite element software ANSYS/LS-DYNA was used to establish the model of space lattice arch structure.Comparing the deformation under different explosive distance.The result indicated, the destruction of the space lattice arch structure decrease with the increase of proportion of distance.%为了研究空间格构式拱结构在爆炸荷载下的破坏模式,利用动力有限元软件ANSYS/LS-DYNA,建立了空间格构式拱的有限元模型,分析了不同炸药比例距离下的变形情况,结果表明:在不同的工况下,破坏模式与炸药比例距离有关,比例距离越大,结构破坏程度越小.
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