Seismic response and numerical simulation of concrete-filled steel tubular composite column with UHPC plates

WEI Jian-gang; YING Hao-dong; YANG Yan

doi:10.19818/j.cnki.1671-1637.2025.03.005

Volume 25 Issue 3

Jun. 2025

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WEI Jian-gang, YING Hao-dong, YANG Yan. Seismic response and numerical simulation of concrete-filled steel tubular composite column with UHPC plates[J]. Journal of Traffic and Transportation Engineering, 2025, 25(3): 82-100. doi: 10.19818/j.cnki.1671-1637.2025.03.005

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WEI Jian-gang, YING Hao-dong, YANG Yan. Seismic response and numerical simulation of concrete-filled steel tubular composite column with UHPC plates[J]. Journal of Traffic and Transportation Engineering, 2025, 25(3): 82-100. doi: 10.19818/j.cnki.1671-1637.2025.03.005

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Seismic response and numerical simulation of concrete-filled steel tubular composite column with UHPC plates

doi: 10.19818/j.cnki.1671-1637.2025.03.005

WEI Jian-gang^{1, 2},
YING Hao-dong¹,
YANG Yan^{1, 3
,
,}

1.
College of Civil Engineering, Fuzhou University, Fuzhou 350116, Fujian, China
2.
College of Civil Engineering, Fujian University of Technology, Fuzhou 350118, Fujian, China
3.
ZhiCheng College, Fuzhou University, Fuzhou 350001, Fujian, China

Funds:

National Natural Science Foundation of China 52278158

University Industry Research Cooperation Project in Fujian Province 2022H6009

More Information

Corresponding author: YANG Yan (1979-), female, associate professor, PhD, yangyan@fzu.edu.cn
Received Date: 2024-02-05
Accepted Date: 2024-07-15
Rev Recd Date: 2024-04-24
Publish Date: 2025-06-28

Abstract

Abstract

To study the seismic response characteristics of concrete-filled steel tubular composite columns with UHPC plates, two 1∶8 scaled specimens were designed and fabricated. The pseudo-dynamic test was performed with ground motion characteristics, ground motion intensity, axial compression ratio, and plate material as parameters. A full-scale model was then established based on OpenSees software to conduct numerical simulations. A calculation method was ultimately proposed for the response displacement of full-scale structures under E1 and E2 seismic loads. Research results show that ground motion characteristics significantly affect the seismic response of specimens. Under different ground motions with the same minor earthquake intensity, the maximum response displacement of specimens S1 and S2 are 4.16 and 4.89 times the minimum one, respectively. With the increasing intensity of ground motions, the specimens go through elastic, elastoplastic, and plastic damage stages. The two specimens share a similar failure pattern. Both have the overall compression bending type damage, manifested as the bottom of the UHPC plate cracking, the steel plate local buckling deformation, the bottom of the column limb steel tube to form a buckling ring, or the occurrence of the full-section tear. The axial compression ratio slightly affects the initial lateral stiffness of the specimen. However, the larger axial compression ratio brings the higher initial stress of the specimen. The earlier yielding and buckling deformation of the column limb steel tube leads to a more violent final failure pattern. Under ground motion of equal intensity, the initial lateral stiffness of a concrete-filled steel tubular composite column with UHPC plate is approximately 13.7% higher than that of the concrete-filled steel tubular composite column with ordinary reinforced concrete plate. Stiffness degradation is delayed to a certain extent, and cumulative hysteretic dissipation is increased by approximately 41.2%. According to the numerical simulation analysis results of the full-scale model, the slenderness ratio is a key factor for the seismic response and the amplification coefficient of the specimens. The proposed calculation method for the response displacement of full-scale specimens under E1 and E2 seismic loads has good accuracy.
- bridge engineering,
- composite column,
- seismic response,
- pseudo-dynamic test,
- calculation method,
- UHPC plate

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References

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