Structural response and resilience of posttensioned steel frames under column loss

Yan Fei Zhu; Chang Hong Chen; Leon M. Keer; Ying Huang; Yao Yao

doi:10.1016/j.jcsr.2019.03.019

Structural response and resilience of posttensioned steel frames under column loss

Yan Fei Zhu, Chang Hong Chen^*, Leon M. Keer, Ying Huang, Yao Yao

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The structural resilience of a steel frame with posttensioned (PT) connections under a column-removal scenario is numerically investigated. Four high-fidelity PT connections finite element (FE) models are developed and compared with the experimental results in the literature, and the developed models describe the behavior of the connections accurately. A method to evaluate middle column removal scenario in a one-story, two-bay frame with PT connections is proposed. The corresponding resisting mechanisms are quantitatively evaluated, which consists of beam mechanism contributed mainly by beam arching action and strand catenary mechanism. A three-dimensional FE model of beam-column substructure with PT connections are developed considering the effect of increasing vertical displacement. Vertical responses associated with different working cases are assessed and the influences of strands, beams and top-seat angles are investigated. In addition, a quantitative evaluation index of the structural resilience under a column-removal scenario for a PT steel frame is proposed based on vertical response displacement. A resilience-based design approach is proposed for the practical engineering design.

Original language	English (US)
Pages (from-to)	107-119
Number of pages	13
Journal	Journal of Constructional Steel Research
Volume	158
DOIs	https://doi.org/10.1016/j.jcsr.2019.03.019
State	Published - Jul 2019

Funding

The authors would like to acknowledge the financially supported by the National Natural Science Foundation of China ( 51408489 , 51248007 , 51308448 , 51301136 and 51508464 ), the Shanxi National Science Foundation of China ( 2017JM5007 ), China Scholarship Council and the Fundamental Research Funds for the Central Universities ( 3102014JCQ01047 ), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University . The authors would like to acknowledge the financially supported by the National Natural Science Foundation of China (51408489, 51248007, 51308448, 51301136 and 51508464), the Shanxi National Science Foundation of China (2017JM5007), China Scholarship Council and the Fundamental Research Funds for the Central Universities (3102014JCQ01047), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University.

Keywords

Alternate path method
Nonlinear static analysis
Posttensioned connection
Progressive collapse
Resilience

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Mechanics of Materials
Metals and Alloys

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10.1016/j.jcsr.2019.03.019

Cite this

@article{6c35f52f5aac4336b4bd7a41ab095779,

title = "Structural response and resilience of posttensioned steel frames under column loss",

abstract = "The structural resilience of a steel frame with posttensioned (PT) connections under a column-removal scenario is numerically investigated. Four high-fidelity PT connections finite element (FE) models are developed and compared with the experimental results in the literature, and the developed models describe the behavior of the connections accurately. A method to evaluate middle column removal scenario in a one-story, two-bay frame with PT connections is proposed. The corresponding resisting mechanisms are quantitatively evaluated, which consists of beam mechanism contributed mainly by beam arching action and strand catenary mechanism. A three-dimensional FE model of beam-column substructure with PT connections are developed considering the effect of increasing vertical displacement. Vertical responses associated with different working cases are assessed and the influences of strands, beams and top-seat angles are investigated. In addition, a quantitative evaluation index of the structural resilience under a column-removal scenario for a PT steel frame is proposed based on vertical response displacement. A resilience-based design approach is proposed for the practical engineering design.",

keywords = "Alternate path method, Nonlinear static analysis, Posttensioned connection, Progressive collapse, Resilience",

author = "Zhu, {Yan Fei} and Chen, {Chang Hong} and Keer, {Leon M.} and Ying Huang and Yao Yao",

note = "Funding Information: The authors would like to acknowledge the financially supported by the National Natural Science Foundation of China ( 51408489 , 51248007 , 51308448 , 51301136 and 51508464 ), the Shanxi National Science Foundation of China ( 2017JM5007 ), China Scholarship Council and the Fundamental Research Funds for the Central Universities ( 3102014JCQ01047 ), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University . Funding Information: The authors would like to acknowledge the financially supported by the National Natural Science Foundation of China (51408489, 51248007, 51308448, 51301136 and 51508464), the Shanxi National Science Foundation of China (2017JM5007), China Scholarship Council and the Fundamental Research Funds for the Central Universities (3102014JCQ01047), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jul,

doi = "10.1016/j.jcsr.2019.03.019",

language = "English (US)",

volume = "158",

pages = "107--119",

journal = "Journal of Constructional Steel Research",

issn = "0143-974X",

publisher = "Elsevier B.V.",

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T1 - Structural response and resilience of posttensioned steel frames under column loss

AU - Zhu, Yan Fei

AU - Chen, Chang Hong

AU - Keer, Leon M.

AU - Huang, Ying

AU - Yao, Yao

N1 - Funding Information: The authors would like to acknowledge the financially supported by the National Natural Science Foundation of China ( 51408489 , 51248007 , 51308448 , 51301136 and 51508464 ), the Shanxi National Science Foundation of China ( 2017JM5007 ), China Scholarship Council and the Fundamental Research Funds for the Central Universities ( 3102014JCQ01047 ), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University . Funding Information: The authors would like to acknowledge the financially supported by the National Natural Science Foundation of China (51408489, 51248007, 51308448, 51301136 and 51508464), the Shanxi National Science Foundation of China (2017JM5007), China Scholarship Council and the Fundamental Research Funds for the Central Universities (3102014JCQ01047), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University. Publisher Copyright: © 2019 Elsevier Ltd

PY - 2019/7

Y1 - 2019/7

N2 - The structural resilience of a steel frame with posttensioned (PT) connections under a column-removal scenario is numerically investigated. Four high-fidelity PT connections finite element (FE) models are developed and compared with the experimental results in the literature, and the developed models describe the behavior of the connections accurately. A method to evaluate middle column removal scenario in a one-story, two-bay frame with PT connections is proposed. The corresponding resisting mechanisms are quantitatively evaluated, which consists of beam mechanism contributed mainly by beam arching action and strand catenary mechanism. A three-dimensional FE model of beam-column substructure with PT connections are developed considering the effect of increasing vertical displacement. Vertical responses associated with different working cases are assessed and the influences of strands, beams and top-seat angles are investigated. In addition, a quantitative evaluation index of the structural resilience under a column-removal scenario for a PT steel frame is proposed based on vertical response displacement. A resilience-based design approach is proposed for the practical engineering design.

AB - The structural resilience of a steel frame with posttensioned (PT) connections under a column-removal scenario is numerically investigated. Four high-fidelity PT connections finite element (FE) models are developed and compared with the experimental results in the literature, and the developed models describe the behavior of the connections accurately. A method to evaluate middle column removal scenario in a one-story, two-bay frame with PT connections is proposed. The corresponding resisting mechanisms are quantitatively evaluated, which consists of beam mechanism contributed mainly by beam arching action and strand catenary mechanism. A three-dimensional FE model of beam-column substructure with PT connections are developed considering the effect of increasing vertical displacement. Vertical responses associated with different working cases are assessed and the influences of strands, beams and top-seat angles are investigated. In addition, a quantitative evaluation index of the structural resilience under a column-removal scenario for a PT steel frame is proposed based on vertical response displacement. A resilience-based design approach is proposed for the practical engineering design.

KW - Alternate path method

KW - Nonlinear static analysis

KW - Posttensioned connection

KW - Progressive collapse

KW - Resilience

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JO - Journal of Constructional Steel Research

JF - Journal of Constructional Steel Research

ER -

Structural response and resilience of posttensioned steel frames under column loss

Abstract

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Keywords

ASJC Scopus subject areas

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