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Study on Shear Strength Reduction Coefficient of UHPC Multi-keyed Epoxy Joint

Qin, Hao-hua / Zou, Jia-yao

Direct shear tests were conducted on UHPC keyed epoxy joints, and a finite element analysis model was established to conduct extensive parameter analysis (including the number of keys, lateral stress, adhesive layer thickness, key height, and flush surface height, etc.). The distribution pattern of shear stress along the height direction in UHPC multiple keyed epoxy joints was revealed. Based on the shear stress distribution fitting function, a calculation formula for the shear strength reduction coefficient of UHPC multiple keyed epoxy joints was proposed. The average ratio of the calculated strength reduction coefficient to the experimental value is 93.8%.

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Study on Shear Strength Reduction Coefficient of UHPC Multi-keyed Epoxy Joint

Qin, Hao-hua / Zou, Jia-yao

Direct shear tests were conducted on UHPC keyed epoxy joints, and a finite element analysis model was established to conduct extensive parameter analysis (including the number of keys, lateral stress, adhesive layer thickness, key height, and flush surface height, etc.). The distribution pattern of shear stress along the height direction in UHPC multiple keyed epoxy joints was revealed. Based on the shear stress distribution fitting function, a calculation formula for the shear strength reduction coefficient of UHPC multiple keyed epoxy joints was proposed. The average ratio of the calculated strength reduction coefficient to the experimental value is 93.8%.

Study on Shear Strength Reduction Coefficient of UHPC Multi-keyed Epoxy Joint

Qin, Hao-hua / Zou, Jia-yao

Direct shear tests were conducted on UHPC keyed epoxy joints, and a finite element analysis model was established to conduct extensive parameter analysis (including the number of keys, lateral stress, adhesive layer thickness, key height, and flush surface height, etc.). The distribution pattern of shear stress along the height direction in UHPC multiple keyed epoxy joints was revealed. Based on the shear stress distribution fitting function, a calculation formula for the shear strength reduction coefficient of UHPC multiple keyed epoxy joints was proposed. The average ratio of the calculated strength reduction coefficient to the experimental value is 93.8%.

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Title:

Study on Shear Strength Reduction Coefficient of UHPC Multi-keyed Epoxy Joint

Additional title:

Sustain. Civil Infrastruct.

Contributors:

Ding, Faxing (editor) / Zeng, Junjie (editor) / Raman, Sudharshan N. (editor) / Hou, Xiaomeng (editor) / Qin, Hao-hua (author) / Zou, Jia-yao (author)

Conference:

International Conference on Civil Engineering Structures and Concrete Materials ; 2024 ; Dali, China

Published in:

Research and Application of High-Performance Concrete ; Chapter: 8 ; 75-83

Sustainable Civil Infrastructures

Publication date:

2025-01-31

Size:

9 pages

ISBN:

978-3-031-82722-8 , 978-3-031-82721-1

ISSN:

2366-3413 , 2366-3405

DOI:

https://doi.org/10.1007/978-3-031-82722-8_8

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

bridge engineering , ultra-high performance concrete (UHPC) , keyed epoxy joint , shear stress distribution , shear strength reduction factor Engineering , Civil Engineering , Building Materials , Materials Science, general , Earth and Environmental Science

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