Publication

"Pocket-monitoring" for fatigue safety verification of a RC bridge deck slab

Eugen Brühwiler, Imane Bayane
2019
Conference Papers

Abstract

The fatigue safety of the reinforced concrete (RC) deck slab of a sixty-year-old steel-concrete road viaduct is questioned based on the results of code-based "re-calculation". Since strengthening intervention would lead to major costs, detailed investigation of the fatigue safety was performed using data obtained from "pocket-monitoring" which is a rational and ready-to-use monitoring device for bridge engineers. The implemented "pocket-monitoring" concept for the determination of fatigue action effects in the RC deck slab is outlined. Results in terms of fatigue relevant stresses in steel rebars of the RC deck slab reveal that the fatigue safety requirements are largely fulfilled based on the proposed verification method using directly data from monitoring. In addition, uncertainties related to the "pocket-monitoring" concept, and in particular the influence of temperature effects, are outlined and analyzed.

Official source

https://infoscience.epfl.ch/entities/publication/954d189e-ffe2-4af2-a109-9b343d330a95

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Eugen Brühwiler, Imane Bayane
2019
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/954d189e-ffe2-4af2-a109-9b343d330a95

About this result

Related concepts (17)

Reinforced concrete

Reinforced concrete, also called ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials.

Rebar

Rebar (short for reinforcing bar), known when massed as reinforcing steel or reinforcement steel, is a steel bar used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and aid the concrete under tension. Concrete is strong under compression, but has low tensile strength. Rebar significantly increases the tensile strength of the structure. Rebar's surface features a continuous series of ribs, lugs or indentations to promote a better bond with the concrete and reduce the risk of slippage.

Data analysis

Data analysis is the process of inspecting, cleansing, transforming, and modeling data with the goal of discovering useful information, informing conclusions, and supporting decision-making. Data analysis has multiple facets and approaches, encompassing diverse techniques under a variety of names, and is used in different business, science, and social science domains. In today's business world, data analysis plays a role in making decisions more scientific and helping businesses operate more effectively.

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