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영어

In this study the lower column of RC frame structure received shock due to abnormal load, and when a 3D modeling is carried out by a Zeus-NL program, a Push-down analysis was executed after the column receiving shock is removed from the 3D modeling. The X-tract, which is a nonlinear section analysis program, was used for analysis of a member such as columns and beams of each floor. The case that an inside column received shock and the case that an external column received shock were decided as a variable of analysis, and its analysis was performed for 5, 10 and 15 storie buildings, and then the moment and deflection of structures were compared with each other for progressive collapse. As a result, the stress was concentrated to the beam that a column was removed, and as it goes up to higher stories, the moment change of an upper story appeared less and the deflection also showed an analysis value trying to maintain horizontal.