Experimental study on shear behavior of high strength bolt connection in prefabricated steel-concrete composite beam

Zhang, Yujie; Chen, Bingcong; Liu, Airong; Pi, Yong‐Lin; Jun-ping, Zhang; Wang, Yang; L, Zhong

doi:10.1016/j.compositesb.2018.10.007

Cited by 82 publications

(43 citation statements)

References 17 publications

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“…Supplementary Figure 1 shows the front view of the push-off test specimens in Chen et al (2019), Zhang et al (2019), andZhang et al (2020). All specimens consisted of a steel beam attached by two prefabricated concrete slabs.…”

Section: Model Geometrymentioning

confidence: 99%

“…where σ i and ε i are the equivalent stress and strain of the steel, respectively; f y and f u (=1.5f y ) are the yield strength and the ultimate strength of the steel, respectively; ε y , ε st (=12ε y ), and ε u (=120ε y ) are the yield strain, the hardening strain, and the ultimate strain of the steel, respectively; and E s is the elastic modulus. (Chen et al, 2019;Zhang et al, 2019Zhang et al, , 2020 and finite element (FE) results. A trilinear model presented by Loh et al (2006) was applied to model the material behavior of the high-strength bolt, and the stress-strain relationship is represented as follows, which was also utilized by Chen et al (2019) and Liu et al (2015Liu et al ( , 2016.…”

Section: Materials Modelingmentioning

confidence: 99%

“…They conducted a series of push-off tests to explore the shear performance and the practicality of bolted connectors in the composite construction. Zhang et al (2019Zhang et al ( , 2020 carried out push-off tests and FE analysis on high-strength friction-grip bolt (HSFGB) connectors in prefabricated SCCBs and proposed design formulas for predicting the shear-bearing capacity per bolted connector. Moreover, Liu et al (2015Liu et al ( , 2016Liu et al ( , 2017 and Ataei et al (2016Ataei et al ( , 2019 studied the structural behavior of HSFGB shear connectors in prefabricated composite beams with geopolymer concrete by performing comprehensive tests and FE analysis, and the practical design recommendations were also presented for estimating the shear resistance and the loadslip response of bolted connectors.…”

Section: Introductionmentioning

confidence: 99%

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Study on Shear Behavior of Multi-Bolt Connectors for Prefabricated Steel–Concrete Composite Beams

et al. 2021

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Multi-bolt shear connectors (MBSCs), arranging bolts as a group in several rows, can be applied in prefabricated steel–concrete composite beams or bridges (SCCBs) to reduce the construction time and meet the requirements of sustainable development. The mechanical behavior of bolt shear connectors has been broadly investigated in recent years, but they were mainly focused on the normal arrangement. The shear performance of MBSCs is not consistent with that of the same number of single bolts. In this study, a three-dimensional (3D) finite element model (FEM) was developed to investigate the multiple bolts effect and its mechanical performance. Material non-linearities and the interactions among all components were included in the FEM. The accuracy and reliability of the proposed FEM were initially verified against the available push-out test results. The validated FEM further studied the load–slip relationship, shear capacity, and shear stiffness of the MBSCs. A parametric study was carried out to determine the effect of the bolt spacing, bolt row numbers, the concrete strength, and the bolt diameter on the shear performance of MBSCs. Based on the extensive parametric analyses, design recommendations considering the multiple bolts effect for predicting the shear resistance per bolt in multi-bolt connectors were proposed and verified.

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Section: Model Geometrymentioning

confidence: 99%

Section: Materials Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on Shear Behavior of Multi-Bolt Connectors for Prefabricated Steel–Concrete Composite Beams

et al. 2021

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“…Subsequently, several researchers put forward some alternatives, such as panel end connections (Bowser, West, & Walbridge, 2012), adherence connections (Thomann & Lebet, 2008), post‐installed shear connectors (Kwon, Engelhardt, & Klingner, 2010), and through bolts (Liu, Bradford, & Lee, 2015). Notably, the potential of through bolts is vast due to several advantages (e.g., high anti‐fatigue performance and the potential of abolishing the grouting step), and related research has become a hotspot in recent papers (Balkos, Sjaarda, West, & Walbridge, 2019; Y. Zhang, Chen et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Shear loading detection of through bolts in bridge structures using a percussion‐based one‐dimensional memory‐augmented convolutional neural network

Wang

Song

2020

Computer aided Civil Eng

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The through bolt, which can be used as a shear connector, has attracted more attention since several accelerated bridge construction methods have been applied to renovate damaged bridges and construct new ones. Because current methods for shear loading detection of through bolts require constant deployment of sensors, the percussion‐based method may be a better alternative to improve the practicality and reduce costs. However, to process percussion‐induced sound signals, current percussion‐based methods all employ machine learning (ML) techniques that depend on manual extraction and classification of features. Attempting to solve this issue, we propose a one‐dimensional, memory‐augmented convolutional neural network (1D‐MACNN) inspired by the memory‐augmented neural network (MANN), which is the main computational novelty of this paper. Particularly, the proposed 1D‐MACNN has capacity to address new scenarios from unknown distributions, that is, the testing categories have not been seen during the training. By directly feeding the raw percussion‐induced sound signals into the 1D‐MACNN, the shear loading of through bolts can be detected. Compared to current ML‐based and deep learning‐based methods for one‐dimensional (1D) signals (e.g., 1D convolutional neural network and 1D convolutional neural network–long short‐term memory), the advantage of our proposed 1D‐MACNN is that it can achieve better performance. Specifically, the proposed 1D‐MACNN can achieve accuracy of 1, precision of 1, recall of 1, and F1‐score of 1. Moreover, the proposed 1D‐MACNN can effectively address the issue of new categories without retraining (in terms of two new categories: accuracy = .83; precision = .89; recall = .77; F1‐score = .83). Finally, the experimental results demonstrate the effectiveness of the 1D‐MACNN, which has great potential to detect shear loading of through bolts in bridge structures.

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“…[ 21 ] In order to address the stress concentration and the brittle failure that occur at the beam–column connection, different diaphragms have been developed and used. [ 22–25 ] Internal, through, and external diaphragms have been proposed in literature as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of vertical through‐plate for concrete‐filled steel tube column to H‐beam connections

Chang

Kim

Choi

et al. 2020

Structural Design Tall Build

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Summary The purpose of this study is to evaluate the structural behavior of concrete‐filled steel tube (CFT) column to H‐beam connections with vertical through‐plate through full‐scale experiments and examine retrofit methods using the finite element method to improve the connection performance. For this purpose, monotonic loading tests were performed on three full‐scale specimens with varying thickness of vertical through‐plate. The experiments showed that the specimens suffer from a brittle failure due to the stress concentrations and residual stresses at the welds before the beams reach their plastic moment capacity. A series of sectional analyses were conducted to evaluate the effects of the thermally induced residual stresses due to welding and then the strain concentrations in the welded connection were estimated by comparing the experimental maximum strain and the analytical mean strain values. Based on these results, a retrofit model for reinforcing a stiff plate on the upper flange of the beam was proposed and analyzed to reduce the stress concentrations in the welded connection. The results showed that using the proposed retrofit approach, the stress concentration at the connection between the vertical through‐plate and the top flange is reduced by 72%, and the strength of the connection is increased by 70%, which is 10% higher than the analytical plastic moment capacity of the beam.

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Experimental study on shear behavior of high strength bolt connection in prefabricated steel-concrete composite beam

Cited by 82 publications

References 17 publications

Study on Shear Behavior of Multi-Bolt Connectors for Prefabricated Steel–Concrete Composite Beams

Study on Shear Behavior of Multi-Bolt Connectors for Prefabricated Steel–Concrete Composite Beams

Shear loading detection of through bolts in bridge structures using a percussion‐based one‐dimensional memory‐augmented convolutional neural network

Experimental and numerical investigation of vertical through‐plate for concrete‐filled steel tube column to H‐beam connections

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