Structural Engineering and Mechanics

  • 제83권6호
  • /
  • Pages.745-756
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  • 2022
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Systems to prevent the load resistance loss of pallet racks exposed to cyclic external force

  • Heo, Gwanghee (Department of International & Plant Engineering, Konyang University) ;
  • Kim, Chunggil (Public Safety Research Center, Konyang University) ;
  • Baek, Eunrim (Seismic Research and Test Center, Pusan National University) ;
  • Jeon, Seunggon (Department of Construction Safety & Disaster Prevention, Chungnam State University)
  • 투고 : 2021.10.13
  • 심사 : 2022.07.24
  • 발행 : 2022.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study aims to determine the cause of the load resistance loss in storage racks that can be attributed to external forces such as earthquakes and to improve safety by developing reinforcement systems that can prevent load resistance loss. To this end, a static cyclic loading test was performed on pallet racks commonly used in logistics warehouses. The test results indicated that a pallet rack exposed to an external force loses more than 50% of its load resistance owing to the damage caused to column-beam joints. Three reinforcement systems were developed for preventing load resistance loss in storage racks exposed to an external force and for performing differentiated target functions: column reinforcement device, seismic damper, and viscoelastic damper. Shake table testing was performed to evaluate the earthquake response and verify the performance of these reinforcement systems. The results confirmed that, the maximum displacement, which causes the loss of load resistance and the permanent deformation of racks under external force, is reduced using the developed reinforcement devices. Thus, the appropriate selection of the developed reinforcement devices by users can help secure the safety of the storage racks.

키워드

과제정보

This research was supported by National Research Foundation of Korea through funding from the Ministry of Education (Project No: NRF-2018R1A6A1A03025542). Many appreciation and acknowledgements go to the National Research Foundation who made this research possible.

참고문헌

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