Research on Seismic-Resistance Performance of Frame Structure with High-Strength Concrete Core-Reinforced Columns

To study the seismic-resistance performance of high-strength concrete core-reinforced column frame structure, Push-over analysis on a 7-story building example is performed and the capacity curves and performance characteristics of the frame structure under rare earthquake with 9-degree intensity are obtained, and the seismic resistant performance of structure is accessed from vibration period, story drift, the process of failure, and the mechanism of hinge-forming. The results show that the frame structure with high strength concrete core-reinforced columns still has a good seismic resistant performance while reducing the section dimension of columns, as its story drift, the mechanism of hinge-forming meet the requirements of existing codes and specifications.