Effectiveness of FRP Plate Strengthening on Curved Soffits

Porter, A; Denton, S R; Nanni, Antonio; Ibell, Tim

doi:10.1142/9789812704863_0110

Cited by 8 publications

(3 citation statements)

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“…Contributions to the lateral and shear stiffness of the FRP plate can also be assumed to be negligible because the sheet is only loaded in the longitudinal direction [17,18]. The value of 0.3 has been chosen for the Poisson's ratio, and the behavior of the linearly elastic stress-strain relationship is shown in Figure 4, which is thought of for FRP strips that have no plastic behavior before breaking, is an option [19]. Concrete, reinforced concrete, and FRP strips are represented by the SOLID65, link180, and SHELL181 components, respectively.…”

Section: Materials Detailsmentioning

confidence: 99%

Finite Element Investigation of the Ultimate Capacity of FRP Strengthening Soffit Curved Girders

Kareem,

Ahmed,

Salih

2024

DJES

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In recent decades, fiber reinforced polymer (FRP) has been increasingly used to reinforce curved reinforced concrete girders. The main objective of this research is to study the effect of curvature on the performance of curved reinforced concrete (RC) girders reinforced with fiber reinforced polymers (FRP). Five models with a length of 6 m and different degrees of curvature (1,2,3,4,5) mm/m were used, each with dimensions similar to the models used in cross-sectional area and effective extension similar to those of the source model. The modeling was in Ansys software and the girders were simulated to obtain the load deflection with respect to the mid span, failure load and failure pattern, in order to understand the effect of variable curvature on the performance of this type of structural element, it was applied under one central load from the middle of the girder length until failure. It was observed that the curvature pitch of 5 mm/m reduced the load-bearing capacity of the c RC curved girders by 7.33%.

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Section: Materials Detailsmentioning

confidence: 99%

Finite Element Investigation of the Ultimate Capacity of FRP Strengthening Soffit Curved Girders

Kareem,

Ahmed,

Salih

2024

DJES

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“…Either way, this concave unevenness is problematic. When the tension-face FRP attempts to stretch, it straightens, leading to premature debonding from the concrete [10,23,24].…”

Section: Curved Soffitsmentioning

confidence: 99%

“…Guidelines across the world recognise this effect to a greater or lesser extent, and usually unevenness of about 5mm for every straight length of 1000mm on the soffit is considered to be acceptable prior to strengthening. Research has shown that this degree of unevenness is still problematic if it exists globally across the span, but it is a practical limit for schemes where only local concavity appears [10,23,24]. Figure 2 shows beams which were tested for this concave effect.…”

Section: Curved Soffitsmentioning

confidence: 99%

Research issues related to the appropriate use of FRP in concrete structures

Ibell¹,

Darby²,

Denton³

2009

Construction and Building Materials

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This paper describes recently-completed research at the University of Bath within the BRE Centre of Innovative Construction Materials in the field of fibre-reinforced polymer (FRP) materials for use in concrete structures. The research described has been carried out in collaboration with Parsons Brinckerhoff, Bristol. The use of FRP to strengthen concrete structures is a mainstream technology throughout the world, and specific research projects aimed at better understanding the underlying mechanics of this technique are described here. Further, the use of FRP to internally reinforce concrete structures is described in the context of effective use of all materials, coupled with the assurance of ductile behaviour.

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