Composite concrete/GFRP slabs for footbridge deck systems

Neto, Almir Barros da Silva Santos; Rovere, Henriette Lebre La

doi:10.1016/j.compstruct.2010.02.005

Cited by 25 publications

(15 citation statements)

References 8 publications

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“…In their test, concrete was either directly cast onto the FRP panel or onto an intermediate epoxy adhesive layer to increase the shear behavior at the interface, and the results proved that epoxy adhesive at the interface could enhance the performance of composite beams. Other investigations on the FRP-concrete composite slab systems, including commonly used shear connectors, were also conducted by Neto [2], Keller and Gurtler [8], Alnahhal et al [9], Julio et al [10] and Gonilha and Correia et al [11], and the results demonstrated that the bonded interface improved the performance of composite slabs, showing the composite slabs were viable and very promising. Moreover, Nguyen et al [12,13] conducted five flexural tests for composite beam systems, in which flexural behavior of the HFRP-UHPFRC composite beams with varying UHPFRC slab geometries and different shear connection types (epoxy adhesive and/or bolt shear connectors) was examined.…”

Section: Introductionmentioning

confidence: 98%

“…Neto and Rovere [2] conducted double shear test to study the bond strength at the interface of GFRP profile and concrete based on the shear connector of epoxy adhesive, and the results showed that epoxy adhesive had a good bonding behavior. Nguyen et al [3] performed 14 push-out tests for shear connection between UHPFRC slab and FRP beam to evaluate the effects of straight/inclined bolt shear connectors and embedment depth-to-bolt diameter ratio, and proposed an empirical equation to predict the shear capacity of bolt shear connectors.…”

Section: Introductionmentioning

confidence: 99%

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Composite Performance of FRP—Concrete Composite Slabs

Xue¹,

Shi-qian²,

Ge³

2016

JRST

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ABSTRACT:In this paper, four FRP-concrete composite slabs and one FRP profile without concrete slabs were tested through two types of shear connectors including FRP perfobond shear connectors and epoxy adhesive under positive and negative loads. For composite specimens under negative loads, flexural buckling failure was observed on the top flanges of FRP profiles; while shear buckling failure occurred on the webs of FRP profiles for those under positive loads. At the ultimate state, the measured mid-span deflection was more than 1/90 of the span for all specimens. Besides, it was noticed that relative slip at the interface between FRP profiles and concrete slabs for composite specimens with epoxy adhesive was lower than that for specimens with FRP perfobond shear connectors. Based on the Tsai-Wu criterion, the Tsai-Wu index of the two failure modes was calculated for composite slabs when buckling failure occurred.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Composite Performance of FRP—Concrete Composite Slabs

Xue¹,

Shi-qian²,

Ge³

2016

JRST

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“…Some examples of such structures are given in the papers [4][5]. There are only few all-composite bridges reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Modal parameter identification of all-GFRP composite cable-stayed footbridge in Denmark

2017

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Abstract. The aim of this paper is to investigate of dynamic characteristics of cable-stayed Fiberline Bridge in Kolding, Denmark, made entirely of Glass Fiber Reinforced Polymer (GFRP) composite. During examination based on in situ free-decay measurements and using accelerometers under human jumping the primary five natural frequencies, corresponding mode shapes and damping ratios of the footbridge were identified. The Peak Picking (PP) and Frequency Domain Decomposition (FDD) approaches were applied to identify the natural frequencies and mode shapes. The corresponding damping ratios were extracted by a linear regression on the extremes of modal decays. The estimated damping ratios were compared with published data for selected footbridges made of various conventional materials. The obtained experimental results provide a relevant data regarding the dynamic response prediction or structural health monitoring of all-GFRP composite footbridges.

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“…The slab consists of a concrete top laid on GFRP I-section pultruded profiles, filled in with foam blocks, as shown in Figure 1. In previous works, this slab system was verified under static loads, both numerically and experimentally [1,2], showing very good results under bending for two systems, with different I-section profiles. Initial studies on the slab durability and its behavior under concentrated loads have also been performed [3].…”

Section: Introductionmentioning

confidence: 99%

“…These characteristics encouraged the engineers to use FRP not just for strengthening, but also to build new structures, particularly in the case of structures located near maritime shores or those exposed to aggressive atmospheric agents. There are several examples of application of FRP materials to footbridges, such as the Aberfeldy Footbridge in Scotland, and the one over the rail system in Kolding, Denmark [1].…”

Section: Introductionmentioning

confidence: 99%

Vibration Analysis of a Composite Concrete/GFRP Slab Induced by Human Activities

2017

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Fiber-reinforced polymer (FRP) materials have been introduced recently in the construction of new structural systems, particularly in footbridge systems. Innovative systems that combine concrete with FRP materials lead to lighter and more slender structures as compared to conventional reinforced concrete structures, which can bring about vibration problems. In this work, a vibration analysis of a composite slab subjected to human activities is performed, both experimentally and numerically. The slab is composed of a concrete top laid on glass fiber-reinforced polymer (GFRP) I-section pultruded profiles. In the experimental analysis, two prototypes of 0.80 m width and 4.00 m span, representing a slab strip, were subjected to walking and jumping by several volunteers. In the numerical analysis, the slab was modeled by finite elements under dynamic loadings that simulate walking and jumping. Both the experimental and numerical results have indicated that the dynamic behavior under human activities of the composite slab must be considered in the design.

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Composite concrete/GFRP slabs for footbridge deck systems

Cited by 25 publications

References 8 publications

Composite Performance of FRP—Concrete Composite Slabs

Composite Performance of FRP—Concrete Composite Slabs

Modal parameter identification of all-GFRP composite cable-stayed footbridge in Denmark

Vibration Analysis of a Composite Concrete/GFRP Slab Induced by Human Activities

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