Steel and Composite Structures
Volume 59, Number 6, 2026, pages 765-789
DOI: 10.12989/scs.2026.59.6.765
Strength and stiffness of column base plate connection supporting damping devices for seismic retrofit
Tae-Sung Eom , Han-Tae Ryu , Jinwoo Kim
Abstract
This study investigates the strength and stiffness of column base plate connections supporting damping
devices for seismic retrofit. The connection consists of a base plate and high-tension anchor bolts placed on both sides
of the column, which penetrate the slab. Four column specimens incorporating these base plate connections were
tested under monotonic lateral loading. Test results demonstrate that the strength and stiffness of the connections are
significantly affected by the plate thickness and anchor details (i.e., anchor diameter and distance from the column).
The yield mechanism and post-yield hardening behavior of the base plates were further investigated through finite
element analysis. The stiffness and strength of the connections were evaluated using the elastic bending theory and
yield line theory, respectively. The validity of the proposed methods was verified by comparing the results with
experimental and finite element analysis data. Based on these findings, design and detailing considerations are
recommended.
Key Words
base plate; base connection; rotational stiffness; yield line theory; seismic retrofit
Address
- Tae-Sung Eom — School of Architecture, Dankook University, 152 Jukjeon-ro, Yongin-si, Gyeonggi-do 16890, Republic of Korea
- Han-Tae Ryu — School of Architecture, Dankook University, 152 Jukjeon-ro, Yongin-si, Gyeonggi-do 16890, Republic of Korea
- Jinwoo Kim — Seismic Safety Center, Korea Conformity Laboratories, 73 Yangcheong 3-gil, Cheongju-si, Chungcheongbuk-do 28115, Republic of Korea
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