Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams

The optimal strut-and-tie models (STMs) of two typical irregular concrete deep beams were constructed using evolutionary structural optimization and compared with those of previous studies. The reinforced concrete deep beam specimens were cast according to the reinforcement designs guided by differe...

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Main Authors: Haitao Chen, Lai Wang, Jitao Zhong
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/17/3637
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author Haitao Chen
Lai Wang
Jitao Zhong
author_facet Haitao Chen
Lai Wang
Jitao Zhong
author_sort Haitao Chen
collection DOAJ
description The optimal strut-and-tie models (STMs) of two typical irregular concrete deep beams were constructed using evolutionary structural optimization and compared with those of previous studies. The reinforced concrete deep beam specimens were cast according to the reinforcement designs guided by different STMs. Eight irregular concrete deep beam specimens were experimentally investigated under stepped loading, and the differences in the amount of steel used, the load-carrying capacity, and the failure pattern of the different specimens were analyzed. The results show that the optimal STMs proposed in this study have significant advantages in terms of cost-effectiveness and can simultaneously ensure the load-carrying capacity, delay the crack propagation of irregular concrete deep beams, and reduce the amount of steel used in structural members. Therefore, they have an important engineering application value for the reinforcement design of irregular concrete deep beams.
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spelling doaj.art-d03a3ee6a28c453ba98f7c5f4df9a1c42022-12-22T02:04:34ZengMDPI AGApplied Sciences2076-34172019-09-01917363710.3390/app9173637app9173637Study on an Optimal Strut-And-Tie Model for Concrete Deep BeamsHaitao Chen0Lai Wang1Jitao Zhong2Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaThe optimal strut-and-tie models (STMs) of two typical irregular concrete deep beams were constructed using evolutionary structural optimization and compared with those of previous studies. The reinforced concrete deep beam specimens were cast according to the reinforcement designs guided by different STMs. Eight irregular concrete deep beam specimens were experimentally investigated under stepped loading, and the differences in the amount of steel used, the load-carrying capacity, and the failure pattern of the different specimens were analyzed. The results show that the optimal STMs proposed in this study have significant advantages in terms of cost-effectiveness and can simultaneously ensure the load-carrying capacity, delay the crack propagation of irregular concrete deep beams, and reduce the amount of steel used in structural members. Therefore, they have an important engineering application value for the reinforcement design of irregular concrete deep beams.https://www.mdpi.com/2076-3417/9/17/3637concrete deep beamstrut-and-tie modelreinforcement designexperimental study
spellingShingle Haitao Chen
Lai Wang
Jitao Zhong
Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams
Applied Sciences
concrete deep beam
strut-and-tie model
reinforcement design
experimental study
title Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams
title_full Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams
title_fullStr Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams
title_full_unstemmed Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams
title_short Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams
title_sort study on an optimal strut and tie model for concrete deep beams
topic concrete deep beam
strut-and-tie model
reinforcement design
experimental study
url https://www.mdpi.com/2076-3417/9/17/3637
work_keys_str_mv AT haitaochen studyonanoptimalstrutandtiemodelforconcretedeepbeams
AT laiwang studyonanoptimalstrutandtiemodelforconcretedeepbeams
AT jitaozhong studyonanoptimalstrutandtiemodelforconcretedeepbeams