EXPERIMENTAL RESEARCH ON SEISMIC PERFORMANCE OF STORY-ADDED REINFORCED CONCRETE FRAME

An experimental research on seismic performance of a story-added three-story framework structure was carried out，and the cement-based inorganic anchoring material was used during the rebar-planting process． At the same time，an experiment on seismic performance of a three-story integral casting framework structure and a comparison of the test results was done． The results indicated that the story-added framework structure's load-bearing capacity was closed to the integral casting framework structure's load-bearing capacity． The story-added framework structure's ductility was slightly lowered than that of the integral casting framework structure but it could meet the basic seismic requirements of engineening． When the displacement of the story-added framework structure reached its limits，visible crossing cracks were discovered in the planting bar joints． Some methods should be used to reinforce the joints in order to meet the aseismic requirement．