Theoretical and Experimental Studies of the Internal Force Transfer Mechanism of Perfobond Rib Shear Connector Group

Zhang, Qinghua; Pei, Shiling; Cheng, Zhenyu; Bao, Yi; Qiao, Li

doi:10.1061/(asce)be.1943-5592.0000997

Cited by 47 publications

(14 citation statements)

References 14 publications

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“…Zhang et al developed an analytical model based on the load-slip characteristics of a single shear connector and load-deformation compatibility of a perforated steel plate and concrete component. The model was validated through full-scale experiments [22]. Wang et al analyzed the effect of concrete stress state; it was found that the shear capacity of the connectors increased when a transverse compressive stress was present, but it decreased when a transverse tensile stress was present.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Wang

Zhi-wen

et al. 2021

Applied Sciences

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A series of full-scale pushed out tests were performed on the Perfobond rib shear connector. The tests were designed to examine the performance of the Perfobond rib shear connector under different rib hole sizes and shapes, reinforcing bar sizes, rib thicknesses, as well as the presence of lateral forces. It has been revealed from the test results that the rib hole size and reinforcement diameter may not act independently, and the influence of one’s size is actually dependent on the size of the other one. The lateral forces also affect the performance of the shear connector; for example, the capacity of the shear connector would be larger under compression than under tension. The existence of transverse pretension stress accelerated the cracking of concrete, leading to the strength and stiffness of concrete, perforated plate, and reinforcing rebars unable to fully exert their effect. In addition, the constraint effect of transverse stress improved the strength and stiffness of concrete and delayed the concrete cracking, bringing the strength and stiffness of concrete, perforated plate, and reinforcing rebars into full play, and resulting in a significant improvement in the shear capacity of Perfobond rib shear connectors.

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Section: Literature Reviewmentioning

confidence: 99%

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Wang

Zhi-wen

et al. 2021

Applied Sciences

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“…Under the influence of adverse environments and vehicle load, the degradation of service performance of existing bridges is becoming increasingly prominent, which has attracted widespread attention (Dai et al, 2020; Guo et al, 2020a; Krivy et al, 2016). Orthotropic steel decks (OSDs) have been widely used in long-span cable-stayed bridges and suspension bridges, due to their lightweight, rapid construction, and high strength (Fu et al, 2018; Liu et al, 2019; Zhang et al, 2016). However, orthotropic cable-stayed bridges have an unsatisfactory record of durability (Zhang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Strengthening of steel decks for cable-stayed bridge using ultra-high performance concrete: A case study

Wang

et al. 2020

Advances in Structural Engineering

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Fatigue cracking induced by vehicle load is a prevalent problem in orthotropic steel decks. In addition, pavement debonding in steel bridge decks is another familiar issue resulting from low slip resistance in the faying surface between the steel and asphalt concrete. The present study proposed a strengthening method that uses ultra-high performance concrete to stiffen a repeatedly maintained cable-stayed bridge in order to help address these two problems. The existing issues of the real bridge and the corresponding causes were investigated. Following this, an ultra-high performance concrete paving system was designed to improve the stiffness of the orthotropic steel decks. For this paving system, a 45-mm ultra-high performance concrete layer was connected to the deck by welded shear studs. The local stresses at the typical vulnerable fatigue cracking points were determined by means of a finite element model and of a field loading test to evaluate the strengthening effect. The results showed that this strengthening method can prevent the propagation of fatigue cracks. The local stresses of the U-ribs and diaphragms were reduced by 45.4% and 40.0%, respectively. The repaired bridge has sufficient resistance against fatigue cracking based on the in situ observations.

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“…Zhao et al (2018) addressed the contribution of the adhesive effect, shear-friction effect, and dowel action to the bearing capacity of PBL shear connectors. Moreover, the mechanical behavior of grouped PBL shear connectors under monotonic loading has also been studied experimentally and theoretically (Li et al, 2018;Zhang et al, 2017aZhang et al, , 2017b.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the cyclic performance of perfobond rib shear connectors

Liao

et al. 2020

Advances in Structural Engineering

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The behavior of perfobond rib shear connectors (PBL shear connectors) under monotonic loading has been widely studied. However, the performance of these connectors under cyclic loading is poorly understood and has seldom been investigated. This work presents an experimental study focusing on the cyclic performance of representative PBL shear connectors with passing rebar. Optical fibers were introduced to measure the detailed strain distributions. Results showed that the bearing capacity of these connectors could reduce up to 55.04% when compared with that under monotonic loading. The performance of these connectors differed significantly between the pull and push directions in the cyclic loading process. The concrete cracks, relative slip, and strains were developed earlier and more completely under pull than under push. Furthermore, rapid stiffness degradation, severe cracking and deformation of the concrete dowels were revealed, indicating the rapid failure of the adhesive effect, reduction of both the shear-friction effect and the dowel action of the passing rebars. These factors all contributed to the observed significant cyclic deterioration of the peak load and the slip. Based on this, a modified formula was proposed to consider the reduction effect. Comparisons between the analytical solution and test results validated the formula.

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Theoretical and Experimental Studies of the Internal Force Transfer Mechanism of Perfobond Rib Shear Connector Group

Cited by 47 publications

References 14 publications

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Strengthening of steel decks for cable-stayed bridge using ultra-high performance concrete: A case study

Experimental investigation on the cyclic performance of perfobond rib shear connectors

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