## 1 Introduction
[PERSON] [12] used the finite element software ANSYS/LS-DYNA to analyze the dynamic response and damage of reinforced concrete-shaped columns under blast loading and found that when the explosives were arranged near the columns on the large side of the structural span, the impact damage of the ground explosion on the structure was the greatest. [PERSON] et al. [3] investigated the blast resistance of reinforced columns using RPC sandwich tubes using numerical simulation and found that the flexural and shear stiffness of reinforced columns with RPCST significantly improved. [PERSON] et al. [13] investigated the blast resistance of four large circular reactive powder concrete-filled steel tube (RPC-FST) columns to fire. The results showed that the RPC-FST columns still had excellent blast resistance after exposure to fire. In addition, the blast resistance of RPC-FST columns decreases with the increase in explosive charge or fire duration. The dynamic response of reinforced concrete frame structures varies when the location of the explosion load differs. [PERSON] et al. [14] analyzed the local and overall dynamic response of the structure under the effect of explosions using LS-DYNA finite element software. [PERSON] recognized that the structural dynamic response under the effect of blast impact can be better predicted by using the 50 mm meshing method. [PERSON] et al. [15] used explicit dynamic analysis software to model the structure in detail and explored the nonlinear dynamic response, damage mechanisms, and damage modes of a reinforced concrete framework structure under the impact of falling rocks and found that the damage was mainly concentrated in the columns and their surrounding components under the impact. [PERSON] et al. [16] used ABAQUS to establish a typical finite element analysis model of a 12-story building, performed a nonlinear dynamic analysis of sudden column loss under different decolumnization schemes, and investigated the resistance to continuous collapse of a three-dimensional composite frame and the internal forces of other components around the decolumnized columns. [PERSON] et al. [17] performed a numerical analysis of a two-by-two-span, single-story reinforced concrete flat plate frame model and considered the damage time of a two-by-two-span, single-story reinforced concrete flat plate frame. A numerical analysis was performed, considering the failure time and location of the destructed columns, and it was found that the dynamic amplification factor (DAF) increased with an increase in failure time. [PERSON] et al. [18] used the finite element software LS-DYNA to analyze the dynamic response of a three-story, two-span PC frame structure under external remote blast loads at different scaled distances and provided results for the damage states corresponding to the different scaled distances, which can be used for rapid assessment of the blast damage state of the concrete prestressed frame structure. [PERSON] et al. [19] chose a five-story, three-span reinforced concrete frame structure as the research object to study the effects of factors such as the frame column failure length on the nonlinear dynamic response of the structure under the instantaneous column loss condition and found that the column failure length has a significant effect on the nonlinear dynamic response of the structure. [PERSON] et al. [20] used the orthogonal test method to compare three types of columns, corner columns, side columns, and inner columns, on the bottom floor of a reinforced concrete frame structure. They used five-level combinations of each of the three factors of column removal time, initial velocity, and remaining structural initial displacement under damage scenarios and found that the initial displacement had the greatest influence on the dynamic response of the structure. [PERSON] et al. [21] investigated the dynamic response of high-rise RC frame structures under blast loading by constructing a numerical computational model of the structure.