Experimental and Analytical Study on the Seismic Performance of PEC T-Shaped Columns Assembled Frames with ALC Open-Hole Wall

To investigate the seismic performance of a fully assembled framework consisting of prefabricated autoclaved lightweight concrete (ALC) wall panels with partially encased concrete T-shaped columns, a horizontal low-cycle reciprocating load test was conducted on a non-open hole ALC wall panel specimen and an ALC wall panel specimen with a rectangular opening. The influence of the opening on the structure was analyzed, and a comparative discussion is carried out in this article on hysteresis curves and skeleton curves. The experimental results showed that a wall panel opening weakened the overall integrity of the wall, resulting in stress concentration around the door opening and accelerated the damage to the infill wall. In addition, a numerical model was established for analysis, and the finite element results were cross-verified with the experimental results. Based on the experimentally validated numerical model, the influence of different opening parameters on the lateral resistance performance of the framework combination was analyzed, providing theoretical references for engineering construction.