Preface

Structural integrity and failure assessment have been considered by many fields of engineers in the literature as it is a multi-disciplinary concept. The assessment procedure vitally ensures that structural elements will remain functional throughout their service lives. Structural failure refers to the loss of structural integrity by means of loss at the component- or system-level elements. The main concern of integrity assessment as an aspect of engineering is that a structural failure may be avoided at the service level by designing the structure to withstand its designated loads. Hence, for satisfactory structural performance, structural safety, failure, and interaction between them should be taken into account throughout the design and analysis stages.

This book is a collection of chapters to provide the researcher with a comprehensive perspective on structural integrity and its sub-disciplines. Topics of interest include: structural integrity, sustainable structural design and analysis, failure analysis and case studies, damage, fatigue, and fracture of materials and structures, durability, safety and reliability analysis of structural components, and structural health monitoring.

The book is organized into two sections: Structural Integrity and Failure; and Bridge Engineering. Both sections include four chapters. In the first section, Chapter I discusses a procedure for monitoring fatigue crack growth. Chapter II assesses the seismic behavior of a sample third-generation nuclear reactor building and observes the stress distributions and crack propagations of the prestressed outer containment. Chapter III covers the effects of steel corrosion on bond relationship between steel and concrete. Chapter IV presents a methodology for developing control, measurement and monitoring plans. In the second section, Chapter V studies the derivation of analytic formulation of bending deflection using the theory of classical laminate plate. Chapter VI focuses on the temporary works methods applied to enable the construction of bridges near third party assets by means of independent checks, monitoring, and back analysis. Chapter VII presents an exploratory analysis of the geometric accuracy of digital twins generated for existing infrastructure using point clouds. Chapter VIII describes the evaluation of safety factors of stay cables by employing the deterministic and non-deterministic methods at limit states.

The editor thanks the authors of the chapters and all contributors. Without their participation this book would not have been possible. Further, the efforts of the staff at IntechOpen in bringing this book to fruition are highly appreciated.

**II**

**Chapter 8 141**

Safety Evaluation of Stay Cables of Cable-Stayed and Extradosed Bridges

via Deterministic and Non-deterministic Methods

*by Khawaja Ali and Aleena Saleem*

**Dr. Resat A. Oyguc** Associate Professor, Istanbul Technical University, Turkey

> **Faham Tahmasebinia** The University of Sydney, Australia

Section 1

Structural Integrity and

Failure

**1**

Section 1
