Abstract Because of the spread of violent terrorist activities around the world, enhancing the blast resistance of protective structures has become increasingly important, and the concrete‐filled steel tube truss (CFSTT) structures have been particularly widely used. In this study, the dynamic responses of CFSTT structures under blast load are investigated in detail by integrating the field blast test and numerical simulation methods. Free‐field pressure, dynamic strain of the structure, and displacements at the vault and the hance were collected in the test. A systematic parametric analysis is carried out to further optimize the anti‐blast performance of CFSTT, such as the wall thickness of the tubes and the strengths of the steel and concrete. The study proposed specific optimization strategies to enhance the robustness and the anti‐blast capability of CFSTT in terms of both material and structural design.
Liu et al. (Mon,) studied this question.