Ghada Karaki

Ghada Karaki
University of the West of England, Bristol | UWE Bristol · Department of Engineering Design and Mathematics

Dr.-Ing.

About

21
Publications
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82
Citations

Publications

Publications (21)
Article
Full-text available
Reinforced concrete (RC) bearing walls are commonly used in building structures to resist axial and lateral loads. Therefore, their ability to withstand loads when exposed to fire is important. The behavior of RC walls under fire exposure is affected by various factors, such as slenderness ratio, concrete strength and composition, and axial load. T...
Article
Full-text available
Anchorage of carbon fibre-reinforced polymers (CFRP) laminates externally bonded to concrete 46 by CFRP spike anchors effectively prevents the unfavourable debonding failure mode in 47 strengthened concrete beams. However, the strain and strength enhancement resulting from the 48 anchorage have not been thoroughly quantified in the literature and e...
Article
Full-text available
Buildings in developing regions with moderate to high seismicity are more vulnerable to earthquakes. This increased vulnerability is primarily due to the lack of appropriate seismic design guidelines and limited control of construction technologies. This study investigates the design of reinforced concrete (RC) frames in Ramallah city, West Bank, P...
Conference Paper
Full-text available
Climate change is raising the demand for change in the construction industry, particularly in the concrete industry. One of the approaches to increase sustainability in the concrete industry is the use of recycled aggregate concrete (RAC). Many studies examined the type and composition of RAC used in construction applications. However, fewer studie...
Article
Purpose This study examines the effect of temperature-dependent material models for normal-strength (NSC) and high-strength concrete (HSC) on the thermal analysis of reinforced concrete (RC) walls. Design/methodology/approach The study performs an one-at-a-time (OAT) sensitivity analysis to assess the impact of variables defining the constitutive...
Article
Full-text available
Purpose This research paper aims to investigate reinforced concrete (RC) walls' behaviour under fire and identify the thermal and mechanical factors that affect their performance. Design/methodology/approach A three-dimensional (3D) finite element (FE) model is developed to predict the response of RC walls under fire and is validated through exper...
Article
Full-text available
13 Probabilistic approaches provide a more realistic look into assessing structures under fire 14 conditions and overcome some limitations observed in the more traditional (deterministic) 15 approaches. These approaches have also been introduced to the fire engineering domain, 16 e.g., fire probabilistic risk analysis and probabilistic structural f...
Article
Full-text available
Due to the superior properties of concrete, structural members made of concrete often satisfy fire requirements specified in codes and standards without special installations or the use of external insulation. A closer examination into fire codal provisions shows that they are primarily founded for new constructions or that which does not suffer fr...
Article
Full-text available
Masonry has superior fire resistance properties stemming from its inert characteristics, and slow degradation of mechanical properties. However, once exposed to fire conditions, masonry undergoes a series of physio-chemical changes. Such changes are often described via temperature-dependent material models. Despite calls for standardization of such...
Article
Performance-based design for fire safety has been introduced in several international design frameworks. The fire models and simulations include various assumptions and simplifications, and the current fire resistance evaluation is based on deterministic approaches, leading to uncertainties in the performance of the structural members exposed to fi...
Conference Paper
Full-text available
Current trends in structural design emphasize the robust, resilient and sustainable design of buildings, and this is achieved by multiple design objectives that support target performance levels for the intended design concept. Recent innovations towards a sustainable design are performance-based design (PBD) and building life-cycle assessment (LCA...
Chapter
Numerical models are built for structural systems to obtain response predictions. The system input parameters are uncertain due to the lack of information in one hand and to their inherent variability on the other hand. Thus, under uncertain conditions, the field of reliability-based optimization provides a realistic tool for structural optimizatio...
Thesis
Full-text available
Bridge vibration due to traffic loading has been a subject of extensive research in the last decades. The focus of such research has been to develop solution algorithms and investigate responses or behaviors of interest. However, proving the quality and reliability of the model output in structural engineering has become a topic of increasing impor...
Conference Paper
Full-text available
The bridge vibration due to traffic loading has been a subject of extensive research during the last decades. A number of these studies are concerned with the effects of the unevenness of roadways on the dynamic responses of highway bridges. The road unevenness is often described as a random process that constitutes of different wavelengths. Thus,...
Article
The process of analysis and design in structural engineering requires the consideration of different partial models of loading, structural material, structural elements and analysis type, among others. All of these, need an adequate modelling as individuals and as coupled sets to catch a behaviour of interest. This paper proposes an innovative algo...
Conference Paper
Full-text available
The studies of bridge vehicle interaction and its effect on the global response of highway bridges is of increasing interest for projects of upgrading existing highway bridges. In this study, the bridge vehicle interaction is investigated considering road unevenness and long term deflections due to creep. As different models exist to tackle the dyn...
Article
The evident advances of computational power of digital computers and their use in structural engineering enable advanced modelling and analysis of structures. Modelling demands compatible representation of the different subsystems and their interaction, such subsystems are the loading, the superstructure, the substructure and the bearings in bridge...
Article
Full-text available
The evident advances of the computational power of the digital computers enable the modeling of the total system of structures. Such modeling demands compatible representations of the couplings of different structural subsystems. Therefore, models of dynamic interaction between the vehicle and the bridge and models of a bridge bearing, a coupling e...

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