Reliability of Reinforced Concrete Elements in the UAE with Consideration of Local Materials and Workmanship /

Linked Agent
Tabsh, Sami, degree co-., Thesis advisor
Leblouba, Moussa, Thesis advisor
Alternative Title
موثوقية عناصر خرسانة مسلحة في دولة الإمارات العربية المتحدة مع مراعاة المواد المحلية والتصنيع
Date Issued
2022
Language
English
Thesis Type
Thesis
Abstract
This study presents the reliability analysis of reinforced concrete members with consideration of local material and fabrication characteristics in the northern emirates of the. The limit state functions that are addressed in the investigation are flexure, shear and pure axial compression. Different concrete compressive strengths, member dimensions, and longitudinal and transverse reinforcement ratios are taken into consideration in the reliability analysis. 8651 concrete cube strength sample data were collected from 7 suppliers, with nominal values varying between 30 and 82.5 MPa. Additionally, 2433 steel yield strength sample data were obtained from 4 laboratories, for which the nominal steel yield strength was 500 MPa for rebar with diameters between 10 and 32 mm. Actual member dimensions were determined and compared with their nominal values for 90 beams and 100 columns, in which each member dimension was the average measurement of readings at 3 different locations. The load variables considered in the reliability analysis were dead, live, and wind loads. Professional factors for flexural, shear and compressive strength considered 80, 380 and 89 tested samples from the available literature. The results of the concrete compressive strength statistical analysis showed that the mean-to-nominal ratio ranged from 1.072-1.418 and the coefficient of variation ranged from 0.0252-0.110, with smaller values associated with higher concrete strength. The corresponding ranges of the statistical parameters for the steel strength were 1.104-1.132 and 0.0291-0.0459, respectively, with no correlation with the rebar size. Monte Carlo simulation of the resistance, after incorporation of the professional factors, showed that the bias and coefficient of variation of flexural strength are 1.125 and 0.0647, for shear in beams without stirrups 1.291 and 0.335, for shear in beams with stirrups 1.192 and 0.112, and for axial compression are 1.125 and 0.0965. The reliability analysis for beams under flexure showed that the minimum str
Note
A Dissertation Submitted in Partial Fulfilment of the Requirements for the Degree of Master of Science in Civil Engineering University of Sharjah Sharjah, UAE December 2022
Category
Theses
Library of Congress Classification
TA683.2 .N643 2022
Local Identifier
b15867493