Research on Collapse Ultimate Load of Fabricated RCS Composite Frame Structure

In this paper for study the collapse ultimate load of the prefabricated reinforced concrete column—steel beam composite frame structure, the “new RCS beam-to-column joint” is used as the beam–to-column connection to the experimental model, the half-scale fabricated RCS space frame structure (2-story, 1×2 bay) is subjected to twice instantaneous failure experiments on the bottom of side column under different load levels. The 2A column is quickly pulled out by the traction force of the vehicle. The experimental results demonstrated that the method of dismantling the failure column can relatively truly response the progressive collapse condition. The remaining RCS structure is all in the elastic stage under twice different load level tests. The displacement time history curve has no vibration phenomenon in the first experimental. The SAP2000 finite element program is used to verify that the test results are basically the same as the numerical simulation results, and it is further explored that the collapse ultimate load value is 10.25 times of the structure design load value.