A Design Method for One-Side Bolted Connection Joints of Prefabricated Concrete-Encased CFST Composite Column and the Analysis of Seismic Performance of CECFST Frames

HU Ziming; GUO Lei; WANG Jingfeng; LIAO Feiyu

doi:10.3724/j.gyjzG23103111

Volume 54 Issue 11

Nov. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(11): 136-143

HU Ziming, GUO Lei, WANG Jingfeng, LIAO Feiyu. A Design Method for One-Side Bolted Connection Joints of Prefabricated Concrete-Encased CFST Composite Column and the Analysis of Seismic Performance of CECFST Frames[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(11): 136-143. doi: 10.3724/j.gyjzG23103111

Citation:

HU Ziming, GUO Lei, WANG Jingfeng, LIAO Feiyu. A Design Method for One-Side Bolted Connection Joints of Prefabricated Concrete-Encased CFST Composite Column and the Analysis of Seismic Performance of CECFST Frames[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(11): 136-143. doi: 10.3724/j.gyjzG23103111

Citation:

HU Ziming, GUO Lei, WANG Jingfeng, LIAO Feiyu. A Design Method for One-Side Bolted Connection Joints of Prefabricated Concrete-Encased CFST Composite Column and the Analysis of Seismic Performance of CECFST Frames[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(11): 136-143. doi: 10.3724/j.gyjzG23103111

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A Design Method for One-Side Bolted Connection Joints of Prefabricated Concrete-Encased CFST Composite Column and the Analysis of Seismic Performance of CECFST Frames

doi: 10.3724/j.gyjzG23103111

HU Ziming^1,3,
GUO Lei²,
WANG Jingfeng^{1,2
,
,},
LIAO Feiyu⁴

1. College of Civil Engineering, Hefei University of Technology, Hefei 230009, China;
2. Engineering Research Center of Low-carbon Technology and Equipment for Cement-based Materials, Ministry of Education, Hefei University of Technology, Hefei 230009, China;
3. Anhui Key Laboratory of Civil Engineering Structures and Materials, Hefei 230009, China;
4. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Received Date: 2023-10-31
Available Online: 2024-12-05

Abstract

Abstract

Concrete-encased concrete-filled steel tubular (CECFST) composite columns possess better durability and fire performance, and have been widly used in engineering practice. However, welding joints are generally used to connect the steel beam to CECFST column, leading significant difficulty in joint construction accompanied by a large amount of welding work. Moreover, welding joints are more likely to appear fracture under earthquake loads. The load transfer mechanism within the encased concrete was analyzed and its influence on the bearing capacity and stiffness of one-side bolts in tension and beam flanges in compression were discussed. The calculation model for the bearing capacity and stiffness of joints was established. OpenSEES software was employed to model the CECFST frame, in which the moment-rotation and shear force-shear curves were obtained based on the component method and superstition method, respectively. The accurary of the model was verified through test results, and the dynamic response of the CECFST frame with one-side bolted connections under different seismic intensities was studied. The seismic performance for such frame structures was investigated to determine whether it meets the requirements of current relevant specifications.
- concrete-filled CFST composite column,
- assembled joint,
- joint design method,
- seismic performance

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References(27)

References

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