Propagation characteristics of shock wave in SRC columns

The dynamic characteristics of SRC columns are different from those of the steel or concrete columns due to the effect of the shock shape. Both the theory analysis and computer simulation were used together to study the characteristics of the shock wave induced by blast loading in the SRC columns, especially the propagation characteristics on the sections near the middle height and supporting regions and the effect of the steel shape. The conclusions are that the plane wave theory can be used to analyze the shock wave on sections near the middle height in the SRC columns, while the space wave theory can be used on sections near the support, that the shock wave is very complex in SRC columns because of the steel shape, and that the stress of the concrete outside the steel flanges in SRC columns induced by blast loading increases because of the steel shape's effect, while the stress of concrete inside the steel flanges decreases, thus the concrete inside the steel flanges in SRC columns can be protected by the steel shape.