Abstract
The dynamic response and stability of building structures under accidental loads such as earthquake, explosion, and impact have been focused by experts. The significant influence will be induced once the damaged structure begins to collapse. In this study, a reinforced concrete frame structure model was designed and tested to study the dynamic response law of the structure under the condition of the failure of the middle column of the model structure, the remaining structure successively failed the load-bearing column and continued to be subjected to impact load and uniform load. The analytical method was used to calculate the ultimate uniform load subjecting to the structure under the failure of four load-bearing columns, because its value was less than the load in this test, the structure collapsed. The finite element calculation model was established, and compared the simulation results to the test results to verify its rationality. Then, the influence of the impact energy and the structural stores on the dynamic response of the structure were analyzed. The results showed that the peak value of the dynamic response of the damaged structure did not increase strictly with the increase of the number of failure columns, which may be related to the sequence of failure columns.
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This work is supported by the National Natural Science Foundation of China (No. 51874118, No. 51174076, No. 51044003).
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Ou, C., Liu, J., Sun, L. et al. Experimental and Numerical Investigation on the Dynamic Responses of the Remaining Structure under Impact Loading with Column Being Removed. KSCE J Civ Eng 25, 2078–2088 (2021). https://doi.org/10.1007/s12205-021-1026-5
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DOI: https://doi.org/10.1007/s12205-021-1026-5