Experimental And Finite Element Simulation On Seismic Behavior Of Recycled Concrete Columns

With the development of society, so that the large-scale use of concrete in construction waste concrete headed "junk" is increasing. People gradually began to re-examine these so-called construction waste, to explore whether there is value in use, then, recycled concrete emerged.In this paper, the mechanical properties of recycled concrete through basic physics research, to explore whether the seismic performance to meet the needs of engineering application, can promote use. Article designed five coarse aggregate replacement rate of 100% recycled concrete columns, use low cyclic loading test method, regeneration cracked concrete columns and state failure modes under different axial compression primarily observational studies than in the case.Through the experiment the measured data, draw the corresponding hysteresis curve and hysteretic performance analysis. According to the experimental data of specimens, the bearing capacity, displacement ductility, stiffness degradation and seismic performance index. Finally, using the finite element simulation of the specimens using the ANSYS finite element analysis software, and the experimental results are compared with the simulation results.Final conclusion:For the design of axial compression ratio of recycled concrete frame column specimens, their destructive form of shear compression failure. Recycled concrete frame columns in seismic performance and seismic performance of ordinary concrete are similar, although compared to the seismic behavior of ordinary concrete to be worse, but I believe that through rational design of recycled concrete member may be used for the actual seismic structural engineering.