Abstract：
Recycled aggregate concrete-filled square steel tube short columns were pushed out to research their interface bond mechanical action with the parameter of recycled coarse aggregate replacement rate (0%,25%,50%,75% and 100%）. The results show that there were some similarities of Load-slips between loading end and free end, but the initial slip of loading end developed faster than that at the free end. Longitudinal strain of steel tube in the load rising period was expressing a negative exponential distribution, while it was a linear distribution in the load decline period.When replacement rate is 50%, the interface energy dissipation of RACFSST is the largest.
LI Wei-ning,XU Jin-jun,CHEN Zong-ping. RESEARCH ON THE INTERFACE MECHANICAL ACTION BETWEEN SQUARE STEEL TUBE AND RECYCLED AGGREGATE CONCRETE[J]. Architecture Technology, 2015, 46(1): 65-67.
