Numerical Modeling Approaches of FRCMs/SRG Confined Masonry Columns

Ombres, Luciano; Verre, Salvatore

doi:10.3389/fbuil.2019.00143

Cited by 23 publications

(10 citation statements)

References 39 publications

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“…The concrete part was dispersed with 8-node solid element C3D8, the rebars were dispersed with truss element T3D2 [38]. To meet the calculation accuracy and efficiency at the same time, after comparing the calculation results of FE models with different mesh sizes, the elements in the single key area were especially refined so that the minimum element dimension was 5 mm.…”

Section: Finite Element Modelmentioning

confidence: 99%

Influencing Factors and Shear Capacity Formula of Single-Keyed Dry Joints in Segmental Precast Bridges under Direct Shear Loading

Hou

Peng²,

Jin

et al. 2020

Applied Sciences

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This article investigates the nonlinear behavior of single-keyed dry joints in segmental precast bridges under direct shear loading on the basis of nonlinear finite element analysis on lots of specimens with concrete plastic damage considered. Through detailed discussion on existing research, influence factors of the ultimate shear capacity of the keyed dry joint are analyzed, a new shear capacity formula was proposed and evaluated. The feasibility and correctness of the FE simulation method were verified by comparison with the existed experimental results. Concrete tensile strength at the key root is critical to the ultimate bearing capacity of the single-keyed dry joint under the direct shear loading. Friction on the joint interface and dimension parameters of the key do not have much effect on the ultimate shear capacity. However, reasonable key inclination (tanθ) would be suggested as 0.7~0.9. In comparison with the predicted results obtained by other existed formulas, the proposed formula is demonstrated to be in perfect consistency with both tests and the FE simulation results.

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Section: Finite Element Modelmentioning

confidence: 99%

Influencing Factors and Shear Capacity Formula of Single-Keyed Dry Joints in Segmental Precast Bridges under Direct Shear Loading

Hou

Peng²,

Jin

et al. 2020

Applied Sciences

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“…The steel sheets are mono-directional and glued to glass fibres in order to control the distance between the single yarns; the following types of steel are usually employed in the SRG system: (i) ultra-high-strength steel wire and (ii) stainless steel [11,12]. SRG systems' effectiveness was studied on concrete [13,14] and masonry structures [15]. In all these studies, a considerable improvement in terms of load-bearing capacity was observed.…”

Section: Introductionmentioning

confidence: 99%

The Effectiveness of the DIC as a Measurement System in SRG Shear Strengthened Reinforced Concrete Beams

Funari

Verre

2021

Crystals

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Steel Reinforced Grout (SRG) materials are generating considerable interest as strengthening system of reinforced concrete (RC) structures. They are finding increasing use in several civil engineering applications mainly due to the advantages they offer over traditional material such as high strength to weight ratio, ease of application, durability and low price. This paper describes the results of an experimental investigation carried out on SRG shear strengthened RC beams and gives evidence of the Digital Image Correlation (DIC) effectiveness as a measurement system. The tests performed had two main objectives: (i) assess the effectiveness of continuous and discontinuous U-wrapped jackets comprising a different number of layers and strips; (ii) assess the shear crack distribution during the tests by means of the DIC measurements. The results confirmed that reinforcing RC beams with SRG jackets can increase the load-bearing capacity; when the beam was reinforced with a continuous two-layered SRG strip, an increase of 84% was observed (compared to the unreinforced beam). The Linear Variable Differential Transformers (LVDT) measurements validated the results obtained by means of the DIC.

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“…The achievement is a less resistant composite with respect to the traditional FRP (due to the lower fiber content per unit of matrix volume), but more porous (due to the voids in the inorganic matrix) and so able to guarantee the original breathability of the existing substrate. For this reason, the IMC was intended to be adopted in masonry structural rehabilitation and upgrade [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Energy and seismic drawbacks of masonry: a unified retrofitting solution

et al. 2021

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All over the world, a large part of existing buildings is not adequate to satisfy the safety requirement and the thermal comfort criteria. For this reason, the interest in structural and energy retrofitting systems has steadily grown in the last decades. In this scenario, an innovative thermal resistant geopolymer mortar has been developed and used for Inorganic Matrix Composite (IMC) systems aimed to a combined seismic and energy new retrofitting technique. The geopolymer-based IMC is able to ensure competitive mechanical properties with respect to the traditional lime-based IMCs and, at the same time, a significant reduction in thermal conductivity. In this paper, an experimental program is reported considering small-scaled masonry panels with double-side IMC-retrofitting and determining both the in-plane shear strength and the thermal resistance. The experimental shear tests are aimed to compare the mechanical performance of the geopolymer innovative systems with those of the traditional lime-based ones. Moreover, the thermal resistance gain of the innovative solutions was measured and compared with traditional systems. The results evidenced the effectiveness of the proposed technique that significantly improved the performances of masonry walls from both the thermal and the mechanical point of view.

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Numerical Modeling Approaches of FRCMs/SRG Confined Masonry Columns

Cited by 23 publications

References 39 publications

Influencing Factors and Shear Capacity Formula of Single-Keyed Dry Joints in Segmental Precast Bridges under Direct Shear Loading

Influencing Factors and Shear Capacity Formula of Single-Keyed Dry Joints in Segmental Precast Bridges under Direct Shear Loading

The Effectiveness of the DIC as a Measurement System in SRG Shear Strengthened Reinforced Concrete Beams

Energy and seismic drawbacks of masonry: a unified retrofitting solution

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