Probabilistic analysis of a concrete column in an aggressive soil environment

Autor: Dmitri Steshenko, Janusz Kozubal, Marek Wyjadłowski
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Computer science
0211 other engineering and technologies
Social Sciences
02 engineering and technology
Stiffness
Soil
021105 building & construction
Materials Testing
Reliability Engineering
Psychology
Materials
Multidisciplinary
Sulfates
Chemical Reactions
Structural engineering
Reliability
Mechanical system
Aggression
Corrosion
Chemistry
Physical Sciences
Medicine
Engineering and Technology
medicine.symptom
Research Article
Chemical Elements
Anions
Science
Materials Science
Material Properties
medicine
Sulphate attack
Mechanical Properties
Probabilistic analysis of algorithms
Boundary value problem
021101 geological & geomatics engineering
Behavior
Models
Statistical
business.industry
Construction Materials
Construction Industry
Chemical Compounds
Biology and Life Sciences
Reproducibility of Results
Random Variables
Humidity
Penetration (firestop)
Probability Theory
Models
Chemical
Composite Materials
Salts
business
Beam (structure)
Mathematics
Concrete
Zdroj: PLoS ONE
National Information Processing Institute
PLoS ONE, Vol 14, Iss 3, p e0212902 (2019)
ISSN: 1932-6203
Popis: Sulphate attack is one of the most important factors that limit the lifetime of pure concrete constructions. Harsh environmental conditions have a large impact on the operational costs of concrete columns or piles dipped into soil. The results are non-deterministic; therefore, reliability analysis is often used. The strength characteristics of the substrate around the construction were modelled as one-dimensional prismatic beams related with random p-y curves. Sulphate deterioration is defined as a set of random variables jointed with two dimensional mechanical systems at acceptable levels. Fick's second law describes the penetration of sulphate ingress into pure concrete with explicit numerical solutions for boundary conditions and an increase in the transition factor under the progress of sulphate ingress. This process was partially solved via analytical methods for sulphate ion transport and numerically for a random field. This solves the mechanical task and determines the system reliability. A numerical example is provided to illustrate the proposed method to prevent unexpected structural failures during column service life. The proposed methodology can assist designers and can help to make decisions on existing foundations to ensure the safety of geotechnical construction.
Databáze: OpenAIRE
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