Experimental study on seismic behaviour of reinforced concrete shear walls in high-rise buildings

The purpose of this study is to evaluate the earthquake resilience of reinforced concrete shear walls in high-rise structures by employing different methods of horizontal joint integration and concrete pouring. Five distinct specimen models (SJ-1 to SJ-5) were developed and subjected to Northridge seismic wave simulations on a shaking table. The results indicated that the SJ-1 model exhibited superior seismic resistance, attributed to its high cracking threshold and compression strength. In contrast, the seismic performance of models SJ-2 to SJ-5 was significantly affected by the joint assembly technique, resulting in suboptimal outcomes. Notably, the SJ-3, SJ-4, and SJ-5 models showed a considerable decrease in load-bearing capacity due to joint malfunction during advanced testing stages. Additionally, the rate of stiffness degradation in these models accelerated once displacements exceeded 10 mm, indicating poor ductility and energy absorption capabilities.