TY - JOUR
T1 - Development of a novel shape memory alloy-based self-centering precast segmental concrete column
AU - Chen, Zhi Peng
AU - Zhu, Songye
N1 - Funding Information:
The authors are grateful for the financial support from the Research Grants Council of Hong Kong (Grant PolyU 152246/18E and T22-502/18-R), the National Key Research and Development Program of China (Grant 2019YFB1600700), the National Observation and Research Station of Material Corrosion and Structural Safety of Hong Kong-Zhuhai-Macao Bridge in Guangdong, and the Hong Kong Polytechnic University (Grant ZE2L, ZVX6, and P0035787). The findings and opinions expressed in this paper are solely those of the authors and do not represent the view of the sponsors.
Funding Information:
The authors are grateful for the financial support from the Research Grants Council of Hong Kong (Grant PolyU 152246/18E and T22‐502/18‐R), the National Key Research and Development Program of China (Grant 2019YFB1600700), the National Observation and Research Station of Material Corrosion and Structural Safety of Hong Kong‐Zhuhai‐Macao Bridge in Guangdong, and the Hong Kong Polytechnic University (Grant ZE2L, ZVX6, and P0035787). The findings and opinions expressed in this paper are solely those of the authors and do not represent the view of the sponsors.
Publisher Copyright:
© 2022 John Wiley & Sons Ltd.
PY - 2022/12
Y1 - 2022/12
N2 - This study proposes a novel shape memory alloy (SMA)-based self-centering (SC) precast segmental concrete column (PSCC). The entire structural system, called SSC-PSCC, can be constructed via off-site precasting followed by on-site assembly. By using connecting SMA bolts and steel angles, wherein SMA and steel elements contribute to SC and energy dissipation (ED) capacities, respectively, SSC-PSCC is free from post-tensioned anchorages and wet joints, and the construction or repair process is considerably simplified. The behavior of SSC-PSCC was systematically studied through refined finite element models (FEMs) that were verified by good agreements with previous testing results. Cyclic behavior was simulated, and SSC-PSCC exhibits desirable SC and ED capacities. Compared with traditional post-tensioning (PT)-based SC-PSCC, SSC-PSCC has numerous advantages, including easy construction, quick repair and replacement of ED elements after earthquakes, and free from buckling of ED bars observed in traditional PT-based segmental columns. Furthermore, parametric studies were conducted to identify several crucial design parameters, such as prestrain in SMA bolts, axial load ratio, and segment reinforcement diameter. Design recommendations are provided on the basis of the results of the parametric studies.
AB - This study proposes a novel shape memory alloy (SMA)-based self-centering (SC) precast segmental concrete column (PSCC). The entire structural system, called SSC-PSCC, can be constructed via off-site precasting followed by on-site assembly. By using connecting SMA bolts and steel angles, wherein SMA and steel elements contribute to SC and energy dissipation (ED) capacities, respectively, SSC-PSCC is free from post-tensioned anchorages and wet joints, and the construction or repair process is considerably simplified. The behavior of SSC-PSCC was systematically studied through refined finite element models (FEMs) that were verified by good agreements with previous testing results. Cyclic behavior was simulated, and SSC-PSCC exhibits desirable SC and ED capacities. Compared with traditional post-tensioning (PT)-based SC-PSCC, SSC-PSCC has numerous advantages, including easy construction, quick repair and replacement of ED elements after earthquakes, and free from buckling of ED bars observed in traditional PT-based segmental columns. Furthermore, parametric studies were conducted to identify several crucial design parameters, such as prestrain in SMA bolts, axial load ratio, and segment reinforcement diameter. Design recommendations are provided on the basis of the results of the parametric studies.
KW - hysteretic analysis
KW - parametric study
KW - precast segmental concrete column
KW - self-centering
KW - shape memory alloy
UR - http://www.scopus.com/inward/record.url?scp=85138927499&partnerID=8YFLogxK
U2 - 10.1002/stc.3099
DO - 10.1002/stc.3099
M3 - Journal article
AN - SCOPUS:85138927499
SN - 1545-2255
VL - 29
JO - Structural Control and Health Monitoring
JF - Structural Control and Health Monitoring
IS - 12
M1 - e3099
ER -