Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Utilizing Elastic Link Elements to Model Horizontal Connections in Precast Concrete Cores for Mid-rise Modular Buildings

중층 모듈러 건축물을 위한 PC 코어의 수평접합부에 대한 탄성연결 요소를 이용한 모델링 기법

  • Lee, Sang-Sup (Korea Institute of Civil Engineering and Building Technology)
  • Received : 2023.08.28
  • Accepted : 2023.10.24
  • Published : 2023.11.30
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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.

Keywords

Acknowledgement

이 연구는 2021년도 국토교통과학기술진흥원의 연구비 지원에 의한 결과의 일부임. 과제번호 21RERP-B08884-8

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