Blast and Impact Loading and Response of Structures
Full Session with Abstracts
In order to study the load-resisting mechanism and response of commonly used steel-concrete composite frames subjected to the progressive collapse scenario, a 2×1 bay full-scale steel-concrete composite floor system was quasi-statically tested to failure under a middle edge column removal scenario. The test specimen is extracted from a prototype building, which was designed according to modern design codes. Based on the test, the load-deflection response of the one-story composite floor subjected to a middle edge column loss is obtained. Besides, the load-carrying mechanism, deformation manners and the failure modes are discussed in detail. The strain distribution and the vertical deformation of the floor system are also presented. The maximum capacity is achieved at the final stage, where the catenary action and the tensile membrane action contribute 42.3% and 57.7% of the resistance, respectively. After the total rupture of the girder section, the system was not able to generate a higher resistance solely rely on the tensile membrane action.