To study the seismic behavior of recycled aggregate concrete filled circular steel tube (RACFCST) frames, the seismic behavior experiment of RACFCST frame was carried out to measure the hysteresis curve, skeleton curve and other seismic behavior indexes. Moreover, based on the experimental study, a feasible numerical analysis model was established to analyze the finite element parameters of 8 RACFCST frame specimens, and the influence of different variation parameters on the seismic behavior index for RACFCST frame was revealed. The results showed that the skeleton curve of specimens under different axial compression ratios were divided into three stages: elastic stage, elastic-plastic stage and descending stage, and the descending stage was relatively stable, indicating that the specimen had stronger deformation capacity in the descending stage. With the increase of axial compression ratio, the peak bearing capacity of all specimens reduced gradually, and the reduction was less than 5%. With the decrease of beam-column linear stiffness ratio, the peak bearing capacity decreased gradually. With the decrease of yield bending moment ratio of beam-column, the peak bearing capacity decreased gradually, and the decreasing rate of peak bearing capacity gradually accelerated. In addition, compared with the axial compression ratio, the beam-column linear stiffness ratio and the yield bending moment ratio of beam-column had a more significant influence on the peak bearing capacity of RACFCST frame.
Xianggang Zhang — 1) School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China, 2) School of Intelligent Construction, Wuchang University of Technology, Wuhan 430223, China
Gaoqiang Zhou, Xuyan Liu, Yuhui Fan and Junna Yang — School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Yajun Huang — School of Intelligent Construction, Wuchang University of Technology, Wuhan 430223, China
Ercong Meng — School of Engineering and Technology, Southwest University, Chongqing 400715, China
PDF Viewer
Preview is limited to the first 3 pages. Sign in to access the full PDF.
