RELIABILITY ANALYSIS OF REINFORCED CONCRETE BRIDGE DECKS SUBJECT TO FATIGUE

  • Type: Project
  • Department: Civil Engineering
  • Project ID: CVE0050
  • Access Fee: ₦5,000 ($14)
  • Chapters: 5 Chapters
  • Pages: 65 Pages
  • Format: Microsoft Word
  • Views: 974
  • Report This work

For more Info, call us on
+234 8130 686 500
or
+234 8093 423 853
ABSTRACT
In this thesis the reliability analysis of reinforced concrete bridge decks subjected to high cycle fatigue was undertaken. A simply supported (single span) reinforced concrete bridge deck was specifically used for the investigation. The statistical models of capacity loss were derived. The uncertainties in structural resistance and the applied loadings were fully accommodated using probabilistic method. The limit state function(Failure Modes) for the flexural capacity of the deck slab, shear capacity of the deck beam and flexural capacity of the deck beam girder was developed and evaluated using the First Order Reliability Method(FORM). The entire process was implemented through a developed MATLAB program “dc_fatigue.m”. Analysis was carried out on all the failure modes considered by varying the geometrical and material properties of the system and their respective safety indices were determined. Failure due to shear in the deck beam gave the least safety index range of 6.06 to -2.11 at 3cycles/min for 10years and 40years respectively indicating the most critical section, when compared to the flexural failure with a safety index range value of 7.59 to 0.25 at 3cycles/min for 10years and 40years respectively. It was generally observed that the reliability index increased as the depth of section and concrete grade increased. Also, the coefficient of variation due to the concrete strength and depth of section decreased with increase in reliability index, from a safety index range of 7.61 to - 0.47 at 5% covariance and from 3.47 to -0.23 at 20% covariance under stress load of 3cycles/min. This trend is expected as quality control plays a very important role in achieving this level of safety in the system. Thus, for a single span bridge of 15m and less under high level of traffic load, a deck beam depth of 1200mm, deck slab of 250mm and concrete strength class of 30-35 are adequate for design and construction.





CHAPTER ONE
INTRODUCTION
1.1 Preamble
Researches on fatigue behaviour of concrete materials started at the end of the 19th century, due to failure in many concrete structures caused by fatigue rupture of the concrete (Rteil et.al, 2011). Results of experimental and theoretical studies of the fatigue properties of plain concrete, reinforcing bars, prestressing tendons, and also of structural concrete members, have been accumulating steadily over the past thirty years.
The assessment of existing structures will become a more frequent task for engineers in the near future due to the increasing age of existing infrastructure. These may be due to reasons such as(Jansen, 1996); Change in intended use of the structure, new regulations with higher load requirements for the structure, indications of ongoing deterioration in the structure, unusual incidents during use (e.g. vehicle impact, fire, earthquakes), inadequate serviceability, discovery of design or construction errors.
The purpose of reliability analysis in this research is to verify the overall stability and establishment of action effects, i.e. the distribution of internal forces and moments. In turn, this will enable the calculation of stresses, strains, curvature, rotation and displacements. In certain complex structures, the type of analysis used (e.g. finite-element analysis) will yield internal stresses and strains and displacements directly.
RELIABILITY ANALYSIS OF REINFORCED CONCRETE BRIDGE DECKS SUBJECT TO FATIGUE
For more Info, call us on
+234 8130 686 500
or
+234 8093 423 853

Share This
  • Type: Project
  • Department: Civil Engineering
  • Project ID: CVE0050
  • Access Fee: ₦5,000 ($14)
  • Chapters: 5 Chapters
  • Pages: 65 Pages
  • Format: Microsoft Word
  • Views: 974
Payment Instruction
Bank payment for Nigerians, Make a payment of ₦ 5,000 to

Bank GTBANK
gtbank
Account Name Obiaks Business Venture
Account Number 0211074565

Bitcoin: Make a payment of 0.0005 to

Bitcoin(Btc)

btc wallet
Copy to clipboard Copy text

500
Leave a comment...

    Details

    Type Project
    Department Civil Engineering
    Project ID CVE0050
    Fee ₦5,000 ($14)
    Chapters 5 Chapters
    No of Pages 65 Pages
    Format Microsoft Word

    Related Works

    ABSTRACT The Reliability Analysis of a Prestressed Concrete Beam (PCB) was presented using First Order Reliability Method and Eurocode 2 procedures to carry out the analysis. The results show that the safety of the PCBin bending decreasedfrom 2.9 to 1.0 and 3.1 to 2.6 as prestress force and the depth from the extreme compressive fiber to the... Continue Reading
    This project work “Reliability analysis of a continuous beam using Hasofer-Lind Reliability  Method” was primarily concerned with the effect of varying parameters such as load, modulus of  elasticity, moment of inertia and span length on the reliability of a continuous beam. The limit  state considered is deflection, and the allowable... Continue Reading
    PREFACE In structural detailing, the project is initiated by the structural engineer. The architectural drawings are prepared by the architect to the required scale and specification given to him by the client. The structural engineer designs the structural frame work of the building and specification required such as slab, beam, column and... Continue Reading
    PREFACE In structural detailing, the project is initiated by the structural engineer. The architectural drawings are prepared by the architect to the required scale and specification given to him by the client. The structural engineer designs the structural frame work of the building and specification required such as slab, beam, column and... Continue Reading
    CHAPTER ONE INTRODUCTION Residential Building:   This is defined as the building which sleeping accommodation is provided for normal residential purposes. It is provided with or without cooking or dining or both facilities. Residential building includes one or two... Continue Reading
    PREFACE In structural detailing, the project is initiated by the structural engineer. The architectural drawings are prepared by the architect to the required scale and specification given to him by the client. The structural engineer designs the structural frame work of the building and specification required such as slab, beam, column and... Continue Reading
    TABLE OF CONTENTS DECLARATION................................................................................................ i v APPROVAL..................................................................................................... ii ACKNOWLEDGEMENT ....................................................................................iii... Continue Reading
    STRUCTURAL DETAILING IN REINFORCED CONCRETE OF A THREE BEDROOM DETACH DUPLEX, IN AZUIYIOKWU ABAKALIKI EBONYI STATE PREFACE In structural detailing, the project is initiated by the structural engineer. The architectural drawings are prepared by the architect to the required scale and specification given to him by the client. The structural engineer... Continue Reading
    STRUCTURAL DETAILING IN REINFORCED CONCRETE OF A THREE BEDROOM DETACH DUPLEX, IN AZUIYIOKWU ABAKALIKI EBONYI STATE PREFACE In structural detailing, the project is initiated by the structural engineer. The architectural drawings are prepared by the architect to the required scale and specification given to him by the client. The structural engineer... Continue Reading
    STRUCTURAL DETAILING OF A REINFORCED CONCRETE STRUCTURE – DUPLEX BUILDING FOR MR INNOCENT I. AZUOBU IN NO 12 UGO – DAN STREETAZUIYIOKWU ABAKALIKI PREFACE In structural detailing, the project is initiated by the structural Engineer. The Architectural drawings are prepared by the Archived to the required scale and specification given to him by... Continue Reading
    Call Us
    Get this work
    whatsappWhatsApp Us