EXPERIMENTAL STUDY ON LATERAL BEARING CAPACITY AND AXIAL COMPRESSION RATIO LIMIT VALUES OF STEEL REINFORCED RECYCLED AGGREGATE CONCRETE COLUMNS

Based on the test of seven steel reinforced recycled aggregate concrete (SＲＲC) columns under low-cyclicreversed loading，the lateral bearing capacity and axial compression ratio limit of the steel reinforced recycledaggregate concrete columns were studied． The influences of the axial compression ratio，stirrup ratio and recycledcoarse aggregate replacement rate on the bearing capacity of steel reinforced recycled aggregate concrete column wereanalyzed in this paper． It is shown that the lateral bearing capacity increases and the ductility coefficient reduces asthe increase of the axial compression ratio of the column． The column exhibits good bearing capacity as the increase ofthe stirrup ratio． There is no obvious influence of coarse aggregate replacement rate on the load carrying capacity ofthe column，which shows the same good bearing capacity and ductility as those of ordinary steel reinforced concretecolumn． The axial compression ratio limit of steel reinforced recycled aggregate concrete column was deduced basedon the force balanced condition at balanced failure． Finally，the axial compression ratio limit values of the SＲＲCcolumn under different seismic levels were put forward for engineering design reference in terms of the test data andductility analysis of the specimen．