Buried Corrugated Steel Culvert Failure Mechanisms Due to Environmental Deteriorations

Nakhostin, Elham; Kenny, Shawn; Sivathayalan, Siva

doi:10.1061/9780784482650.004

Cited by 5 publications

(1 citation statement)

References 20 publications

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“…Moreover, bridges and culverts must be stable during an earthquake to have the vital needs delivered to their intended place on time. Past events such as fires [1][2][3], earthquakes [4][5][6], and defects such as corrosion [7][8][9] of steel in reinforced concrete member, durability issues including shrinkage cracking [10,11], thermal cracking [3,12], chemical attack [11,13,14], alkali-silica reaction [15][16][17], alkali-carbonate reaction as well as carbonation, delayed ettringite formation, freeze-thaw [17] and scaling [18,19] were observed in many reinforced concrete structures and infrastructures previously studied by the researchers. The results of these studies have shown the vulnerability of these types of buildings.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Fiber-Reinforced Polymer Bars for Reinforced Concrete Column Using Nonlinear Finite Element Algorithms

et al. 2021

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The ductility and strength of reinforced concrete (RC) columns could be noticeably improved by replacing steel bars with polymeric bars. Despite the previous research on RC columns, most of those studies focused only on the lateral load capacity of this structural member and were mainly costly experimental studies. However, this paper is concentrated on the previously occurred damages to the reinforced columns in the previous earthquakes. Subsequently, finite element analysis has been performed to examine 24 models including the various shapes of RC columns. In employing the plastic behavior of steel, carbon fiber-reinforced polymer (CFRP), and glass fiber reinforced polymer (GFRP) bars, the bilinear hardening has been considered. To capture both compressive and tensile behavior of the concrete, the concrete damage plasticity model has been implemented. Furthermore, the optimization technique is used for CFRP models to compare with other models. In this paper, the parameters of energy, seismic factor, stiffness, and ductility have been computed using the method proposed by the authors. This suggested method is considered to compare the results from each parameter. Finite element results of steel bars are compared with carbon and glass models. The results show the stiffness of models is improved by CFRP bars, while the energy absorption and ductility factor are enhanced with steel bars. Moreover, GFRP bars can enhance the seismic factor. The reduction of column stiffness to almost half would occur in some rectangular cross-section columns.

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