| Title |
Utilizing Elastic Link Elements to Model Horizontal Connections in Precast Concrete Cores for Mid-rise Modular Buildings |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.11.235 |
| Keywords |
Analysis model; Elastic link element; Horizontal connections; Precast concrete cores; Mid-rise modular buildings |
| Abstract |
This study presents an approach to model the horizontal connections of precast concrete (PC) panels as elastic link elements, utilizing PC
cores as the lateral force-resisting system for a 15-story modular building. While in situ concrete (RC) cores are commonly used for lateral
force resistance in mid- to high-rise modular buildings, the substantial onsite work requirements can reduce construction efficiency. To tackle
this issue, there is ongoing research on using PC cores as an alternative solution, with instances of commercial use observed abroad. PC core
components include 3D boxes and 2D panels, with limited use of 3D boxes due to their weight. When forming a core shear wall with 2D
PC panels, both horizontal and vertical connections are typically needed for proper design. Unlike RC cores, PC cores lack a continuous
concrete structure, resulting in reduced stiffness. To represent this stiffness reduction in commercial analysis programs, a reference stiffness
simulating the behavior of monolithic walls has been established. This study also examined the seismic and wind performance of the 15-story
modular building in light of stiffness reduction. |