Chara Ch. Mitropoulou

Chara Ch. Mitropoulou
National Technical University of Athens | NTUA · School of Civil Engineering

PhD

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32
Publications
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594
Citations

Publications

Publications (32)
Article
Full-text available
Customized wrist splints, particularly for upper extremity orthoses like wrist support braces, are commonly used across numerous clinical scenarios. However, the traditional process for producing personalized wrist splints is largely manual and highly dependent on the expertise of orthopedic specialists. This experience-based approach often leads t...
Preprint
Full-text available
Customized wrist splints, particularly for upper extremity orthoses like wrist support braces, are commonly used across numerous clinical scenarios. However, the traditional process for producing personalized wrist splints is largely manual and highly dependent on the expertise of orthopedic specialists. This experience-based approach often leads t...
Chapter
The preservation of cultural heritage structures is a complex procedure that should incorporate an efficient fire protection design to reduce fire risk. However, during this process, engineers frequently face critical decision-making-type questions concerning the implementation of the fire protection measures in order to both achieve an acceptable...
Article
Full-text available
Fire protection for cultural heritage structures is a challenging engineering task that could benefit from the use of specialized computational tools relying on a performance-based design (PBD) concept rather than on prescriptive-based fire protection codes. In the first part of the present study, the theoretical basis of the proposed computational...
Article
Full-text available
The preservation of cultural heritage structures includes, among others, an efficient fire protection design process. This engineering design process frequently generates critical decision making issues related to conflicts that involve the buildings’ authenticity preservation, the implementation of special fire protection measures and addressing t...
Article
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The coupled lateral-torsional response is observed in building structures subjected to dynamic excitation due to lack of symmetry in terms of mass/stiffness in any of the stories’ plan views; such structural systems are called eccentric. Much damage and even collapse are concerned with building structures with asymmetric plan views. Combined torsio...
Article
Full-text available
Structural analysis programs usually compute a static model with cross sections given by the engineer or set to reasonable defaults. Any optimization of the structure with respect to a variable, for example weight/cost, is left to the experience of the engineer, usually because adding optimization capabilities to a structural analysis program is no...
Article
Full-text available
Building structures are considered as major contributors to global energy consumption (30-40%) and they are responsible for the 40-50% of greenhouse gas emissions. Due to huge energy consumption and material use, tall buildings have drawn particular attention with reference to their environmental impact. The influence of structural systems on the e...
Article
Full-text available
The scope of the work is to detect the most appropriate damage index, able to provide a reliable description of the structural damage level. This damage index is used to formulate a performance-based design framework to be used as a design tool for achieving safer and more economic designs. This objective is achieved by comparing alternative struct...
Article
Full-text available
Design of economic structures adequately resistant to withstand during their service life, without catastrophic failures, all possible loading conditions and to absorb the induced seismic energy in a controlled manner, was subjected to intensive research so far. Costly and extremely sensitive equipment, vital in commerce, business, education, and/o...
Article
In this work, 3D reinforced concrete (RC) and steel building structures have been considered for studying the effect of soil-structure interaction modelling on the structural fragility assessment of such structures. In particular, three foundation models were considered: fixed model where soil-structure interaction is neglected, spring model with s...
Article
Full-text available
One of the main tasks of engineers is to design structural systems light and economic as possible, yet resistant enough to withstand all possible loads arising during their service life and to absorb the induced seismic energy in a controlled and predictable fashion. The traditional trial-and-error design approach is not capable to determine an eco...
Article
Full-text available
The main objective of the study is to propose a methodology for generating the minimum number of required seismic accelerograms for performing with reliability and computational efficiency life-cycle cost analysis (LCCA) studies. The implementation of LCCA framework in earthquake engineering requires the calculation of different cost components tha...
Article
Full-text available
The objective of this study is to propose a life cycle cost (LCC) model able to assess the structural performance of masonry structures. For this purpose the proposed LCC model is used for assessing the structural behaviour of one unreinforced and three retrofitted masonry structures derived following three retrofit scenarios that are suitable for...
Article
Full-text available
In this study a numerical calibration procedure is proposed; while its application in some of the most widely accepted damage indices (DIs) used for quantifying the extent of damage in reinforced concrete structures is presented. In particular, without loss of generality of the applicability of the proposed procedure, the Park and Ang local damage...
Chapter
Full-text available
SynonymsArtificial accelerograms; Direct integration methods; Inertia and damping forces; Linear and nonlinear analysis; Natural records; Seismic loadingIntroductionMost of the current seismic design codes belong to the category of prescriptive design procedures (or limit-state design procedures), where if a number of checks are satisfied, then the...
Chapter
Full-text available
Optimization is a field where extensive research has been conducted over the last decades. Many types of problems have been addressed, and many types of algorithms have been developed, while their range of applications is continuously growing. The chapter is divided into two parts; in the first part, the life-cycle cost analysis is used as an asses...
Chapter
While the use of supplemental damping for improving the seismic performance of buildings has gained acceptance in recent years, there remains a lack of consensus over how dampers should be optimally arranged within a structure. The authors review recent advances in damper placement methodology based on optimisation theory, and present a detailed co...
Book
Full-text available
A typical engineering task during the development of any system is, among others, to improve its performance in terms of cost and response. Improvements can be achieved either by simply using design rules based on the experience or in an automated way by using optimization methods that lead to optimum designs. Design Optimization of Active and Pas...
Book
Full-text available
Throughout the past few years, there has been extensive research done on structural design in terms of optimization methods or problem formulation. But, much of this attention has been on the linear elastic structural behavior, under static loading condition. Such a focus has left researchers scratching their heads as it has led to vulnerable struc...
Chapter
Full-text available
Optimization is a field where extensive research has been conducted over the last decades. Many types of problems have been addressed, and many types of algorithms have been developed, while their range of applications is continuously growing. The chapter is divided into two parts; in the first part, the life-cycle cost analysis is used as an asses...
Article
A Soft Computing (SC) based framework for the fragility assessment of 3D buildings is proposed in this work. The computational effort required for a fragility analysis of structural systems can become excessive, far beyond the capability of modern computing systems, especially when dealing with real-world structures. For the purpose of making attai...
Article
Full-text available
Life cycle cost assessment (LCCA) of structural systems refers to an evaluation procedure in which all costs arising from owing, operating, maintaining and ultimately disposing are considered. LCCA is considered as a very significant assessment tool in the field of the seismic behaviour of structures. In this chapter two test cases are examined whe...
Article
Full-text available
Life-cycle cost analysis (LCCA) is an assessment tool for studying the performance of systems in many fields of engineering. In earthquake engineering LCCA demands the calculation of the cost components that are related to the performance of the structure in multiple earthquake hazard levels. Incremental static and dynamic analyses are two procedur...
Chapter
Full-text available
The objective of this work is to assess seismic design procedures with reference to optimally design of 3D reinforced concrete structures. For this purpose four optimization problems are formulated corresponding to different values of the behaviour factor q. The optimization problems are formulated as sizing optimization problems where the size and...
Article
Full-text available
The objective of this work is to study the influence of various sources of uncertainties on the seismic response of structural systems. For this purpose, four test examples are considered, in particular two steel and two steel–concrete composite buildings. In order to study the impact of uncertainty on this type of structure, life-cycle cost analys...
Article
Full-text available
The basic objective of this study is the assessment of the European seismic design codes and in particular of EC2 and EC8 with respect to the recommended behaviour factor q. The assessment is performed on two reinforced concrete multi-storey buildings, having symmetrical and non-symmetrical plan view respectively, which were optimally designed unde...

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