Naser Al-shayea - Academia.edu (original) (raw)

Papers by Naser Al-shayea

Research paper thumbnail of Detection of Subsurface Cavities Using the Spectral-analysis-of-surface-waves Method

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Research paper thumbnail of Effect of Subgrade Cavities on the Failure of RC Slabs

Advances in Computational Techniques for Structural Engineering

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Research paper thumbnail of Demarcation of Sabkha Zones from Remote Sensing Data and Assessment of Their Engineering and Environmental Hazards for Urbanization Compatibility of Clays in Different Chemical Environments-A Review

For the last three decades, several urban infrastructures have been constructed on sabkha landfor... more For the last three decades, several urban infrastructures have been constructed on sabkha landforms distributed along the Red Sea and Arabian Gulf. Continuous dynamic changes of sabkhas and unique engineering geological characteristics of sabkha sediments under the prevailing natural conditions mark such sediments challenging foundation-soil for construction. Moreover, increasf huan activities after or the urbanization program.^ction enhance the environmental and engineering hazards Monitoring of inhabited former sabkha sites in the Eastern Province of Saudi Arabia indicates that such engineering geological hazards are mainly due to groundwater table rise, and moisture and salt migration from the original sabkha hypersaline to new structures. This research attempts to assess the utility of remote sensing data in zone mapping and estimates the degree of risks in reclaimed sabkha sites. Data relating to the engineering geological aspects of selected sabkha sites that are experiencing ...

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Research paper thumbnail of Influence of cracks on the elastic stability of columns and frames

Influence of elastic, non-propagating, transverse cracks on the elastic, stability of columns and... more Influence of elastic, non-propagating, transverse cracks on the elastic, stability of columns and frames is investigated in this thesis. The crack has been modelled as a rotational spring having a stiffness proportional to the reciprocal of the crack compliance. The general solution of the governing differential equation of the column should satisfy the conditions at the crack location in addition to the boundary conditions at both ends, leading to a system of homogeneous equations which may be reduced to the characteristic equation of the system. The system of equations (or the characteristic equation) is solved numerically using a computer algorithm which traces the required eigenvalue from which the critical load of the system can be obtained.

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Research paper thumbnail of Influence of the Source Type on the 3-D Crosshole Tomography

SOILS AND FOUNDATIONS, 1999

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Research paper thumbnail of Mode Shapes and Crack Damage in Subtangential Buckling of Columns

Transactions of the Canadian Society for Mechanical Engineering, 1988

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Research paper thumbnail of Effects of calcium sulfate on swelling potential of an expansive clay

ASTM geotechnical …, 2000

Résumé/Abstract The unique chemical features of calcium sulfate are largely manifested by its pha... more Résumé/Abstract The unique chemical features of calcium sulfate are largely manifested by its phase transformation due to the reversible hydration-dehydration reaction. Due to the harsh climatic and environmental conditions in eastern Saudi Arabia, such phase ...

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Research paper thumbnail of Predicting the Pillar Stability of Underground Mines with Random Trees and C4.5 Decision Trees

Applied Sciences

Predicting pillar stability in underground mines is a critical problem because the instability of... more Predicting pillar stability in underground mines is a critical problem because the instability of the pillar can cause large-scale collapse hazards. To predict the pillar stability for underground coal and stone mines, two new models (random tree and C4.5 decision tree algorithms) are proposed in this paper. Pillar stability depends on the parameters: width of the pillar (W), height of the pillar (H), W/H ratio, uniaxial compressive strength of the rock (σucs), and pillar stress (σp). These parameters are taken as input variables, while underground mines pillar stability as output. Various performance indices, i.e., accuracy, precision, recall, F-measure, Matthews correlation coefficient (MCC) were used to evaluate the performance of the models. The performance evaluation of the established models showed that both models were able to predict pillar stability with reasonable accuracy. Results of the random tree and C4.5 decision tree were also compared with available models of suppor...

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Research paper thumbnail of Detection of Buried Objects by the GPR Method

Fifth International Conferention on Ground Penetrating Radar

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Research paper thumbnail of Influence of Non-Propagating Cracks on Conservative Buckling of Columns

Transactions of the Canadian Society for Mechanical Engineering

This paper deals with the conservative buckling of columns in the presence of non-propagating cra... more This paper deals with the conservative buckling of columns in the presence of non-propagating cracks. A single non-propagating crack has been modelled as an elastic rotational spring of stiffness l/c, where c is the additional compliance due to the presence of the crack. Both static and kinetic methods of elastic stability have been used and results are presented for several column end conditions and crack parameters.

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Research paper thumbnail of Utilisation of GIS Concepts for Foundation Design on Problematic Eastern Saudi Arabian Sabkha Soil

Geotechnical and Geological Engineering

The design of foundations on a problematic soil is considered one of the most challenging issues ... more The design of foundations on a problematic soil is considered one of the most challenging issues for the geotechnical engineers. Sabkha, or salt flat, is considered as a problematic soil that exists in coastal areas. Ar-Rayyas sabkha is covering a wide area of the Eastern Province of the Kingdom of Saudi Arabia. King Fahd Suburb in the city of Dammam, Saudi Arabia, having been identified with an extensive presence of Ar-Rayyas sabkha, is considered for this study. Many structural failures of the residential buildings in the suburb were reported. The presence of sabkha is predominating the reasons of these failures. 59 investigatory boreholes were performed at the suburb and standard penetration N-values, have been obtained for the boreholes. A regression analysis was carried out, and a prediction model of the N-values using the coordinates and the depth intervals of the boreholes as regressors was provided. Due to the low accuracy of the model, an artificial neural network model was proposed to enhance the accuracy of the prediction; however, a further enhancement was required. Using GIS concepts, the suburb was mapped, and the borehole locations were projected with their attributes on the map. Different interpolation methods were utilised to predict and interpolate the N-values between the boreholes. The inverse distance weighting method yielded the most accurate model and therefore was selected to produce the final layouts for each depth interval. Finally, a framework for the design of foundations with the aid of GIS techniques was developed.

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Research paper thumbnail of Horizontal-Ground-Heat-Exchanger-Design-for-Ground-Coupled-Heat-Pumps

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Research paper thumbnail of SASW & GPR to Detect Buried Objects

Symposium on the Application of Geophysics to Engineering and Environmental Problems 1994, 1994

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Research paper thumbnail of First in situ determination of the ground thermal conductivity for boreholeheat exchanger applications in Saudi Arabia

Renewable Energy, 2009

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Research paper thumbnail of Determination of parameters for a hyperbolic model of soils

Proceedings of the ICE - Geotechnical Engineering, 2003

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Research paper thumbnail of Pullout Capacity of Block Anchor in Unsaturated Sand

Unsaturated Soils 2006, 2006

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Research paper thumbnail of Parameters for an Elasto-Plasto-Damage Model for the Stress-Strain Behavior of Dense Sand

International Journal of Damage Mechanics, 2009

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Research paper thumbnail of A Plastic-Damage Model for Stress-Strain Behavior of Soils

International Journal of Damage Mechanics, 2003

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Research paper thumbnail of Horizontal Ground Heat Exchanger Design for Ground-Coupled Heat Pumps

Ground-source heat pump (GSHP) is used as an all in clusive term for a variety of systems that us... more Ground-source heat pump (GSHP) is used as an all in clusive term for a variety of systems that use the ground, ground water and surfa ce water as a heat source and sink. There are several examples of various types of GSHPs which ar e subdivided into ground-coupled heat pumps (GCHPs), ground water heat pumps (GWHPs) and surfac e water

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Research paper thumbnail of Effect of Specimen Geometry and Testing Method on Mixed Mode I-II Fracture Toughness of a Limestone Rock from Saudi Arabia

Rock Mechanics and Rock Engineering, 2000

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Research paper thumbnail of Detection of Subsurface Cavities Using the Spectral-analysis-of-surface-waves Method

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of Subgrade Cavities on the Failure of RC Slabs

Advances in Computational Techniques for Structural Engineering

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Demarcation of Sabkha Zones from Remote Sensing Data and Assessment of Their Engineering and Environmental Hazards for Urbanization Compatibility of Clays in Different Chemical Environments-A Review

For the last three decades, several urban infrastructures have been constructed on sabkha landfor... more For the last three decades, several urban infrastructures have been constructed on sabkha landforms distributed along the Red Sea and Arabian Gulf. Continuous dynamic changes of sabkhas and unique engineering geological characteristics of sabkha sediments under the prevailing natural conditions mark such sediments challenging foundation-soil for construction. Moreover, increasf huan activities after or the urbanization program.^ction enhance the environmental and engineering hazards Monitoring of inhabited former sabkha sites in the Eastern Province of Saudi Arabia indicates that such engineering geological hazards are mainly due to groundwater table rise, and moisture and salt migration from the original sabkha hypersaline to new structures. This research attempts to assess the utility of remote sensing data in zone mapping and estimates the degree of risks in reclaimed sabkha sites. Data relating to the engineering geological aspects of selected sabkha sites that are experiencing ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Influence of cracks on the elastic stability of columns and frames

Influence of elastic, non-propagating, transverse cracks on the elastic, stability of columns and... more Influence of elastic, non-propagating, transverse cracks on the elastic, stability of columns and frames is investigated in this thesis. The crack has been modelled as a rotational spring having a stiffness proportional to the reciprocal of the crack compliance. The general solution of the governing differential equation of the column should satisfy the conditions at the crack location in addition to the boundary conditions at both ends, leading to a system of homogeneous equations which may be reduced to the characteristic equation of the system. The system of equations (or the characteristic equation) is solved numerically using a computer algorithm which traces the required eigenvalue from which the critical load of the system can be obtained.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Influence of the Source Type on the 3-D Crosshole Tomography

SOILS AND FOUNDATIONS, 1999

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Mode Shapes and Crack Damage in Subtangential Buckling of Columns

Transactions of the Canadian Society for Mechanical Engineering, 1988

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of calcium sulfate on swelling potential of an expansive clay

ASTM geotechnical …, 2000

Résumé/Abstract The unique chemical features of calcium sulfate are largely manifested by its pha... more Résumé/Abstract The unique chemical features of calcium sulfate are largely manifested by its phase transformation due to the reversible hydration-dehydration reaction. Due to the harsh climatic and environmental conditions in eastern Saudi Arabia, such phase ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Predicting the Pillar Stability of Underground Mines with Random Trees and C4.5 Decision Trees

Applied Sciences

Predicting pillar stability in underground mines is a critical problem because the instability of... more Predicting pillar stability in underground mines is a critical problem because the instability of the pillar can cause large-scale collapse hazards. To predict the pillar stability for underground coal and stone mines, two new models (random tree and C4.5 decision tree algorithms) are proposed in this paper. Pillar stability depends on the parameters: width of the pillar (W), height of the pillar (H), W/H ratio, uniaxial compressive strength of the rock (σucs), and pillar stress (σp). These parameters are taken as input variables, while underground mines pillar stability as output. Various performance indices, i.e., accuracy, precision, recall, F-measure, Matthews correlation coefficient (MCC) were used to evaluate the performance of the models. The performance evaluation of the established models showed that both models were able to predict pillar stability with reasonable accuracy. Results of the random tree and C4.5 decision tree were also compared with available models of suppor...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Detection of Buried Objects by the GPR Method

Fifth International Conferention on Ground Penetrating Radar

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Influence of Non-Propagating Cracks on Conservative Buckling of Columns

Transactions of the Canadian Society for Mechanical Engineering

This paper deals with the conservative buckling of columns in the presence of non-propagating cra... more This paper deals with the conservative buckling of columns in the presence of non-propagating cracks. A single non-propagating crack has been modelled as an elastic rotational spring of stiffness l/c, where c is the additional compliance due to the presence of the crack. Both static and kinetic methods of elastic stability have been used and results are presented for several column end conditions and crack parameters.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Utilisation of GIS Concepts for Foundation Design on Problematic Eastern Saudi Arabian Sabkha Soil

Geotechnical and Geological Engineering

The design of foundations on a problematic soil is considered one of the most challenging issues ... more The design of foundations on a problematic soil is considered one of the most challenging issues for the geotechnical engineers. Sabkha, or salt flat, is considered as a problematic soil that exists in coastal areas. Ar-Rayyas sabkha is covering a wide area of the Eastern Province of the Kingdom of Saudi Arabia. King Fahd Suburb in the city of Dammam, Saudi Arabia, having been identified with an extensive presence of Ar-Rayyas sabkha, is considered for this study. Many structural failures of the residential buildings in the suburb were reported. The presence of sabkha is predominating the reasons of these failures. 59 investigatory boreholes were performed at the suburb and standard penetration N-values, have been obtained for the boreholes. A regression analysis was carried out, and a prediction model of the N-values using the coordinates and the depth intervals of the boreholes as regressors was provided. Due to the low accuracy of the model, an artificial neural network model was proposed to enhance the accuracy of the prediction; however, a further enhancement was required. Using GIS concepts, the suburb was mapped, and the borehole locations were projected with their attributes on the map. Different interpolation methods were utilised to predict and interpolate the N-values between the boreholes. The inverse distance weighting method yielded the most accurate model and therefore was selected to produce the final layouts for each depth interval. Finally, a framework for the design of foundations with the aid of GIS techniques was developed.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Horizontal-Ground-Heat-Exchanger-Design-for-Ground-Coupled-Heat-Pumps

Bookmarks Related papers MentionsView impact

Research paper thumbnail of SASW & GPR to Detect Buried Objects

Symposium on the Application of Geophysics to Engineering and Environmental Problems 1994, 1994

Bookmarks Related papers MentionsView impact

Research paper thumbnail of First in situ determination of the ground thermal conductivity for boreholeheat exchanger applications in Saudi Arabia

Renewable Energy, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Determination of parameters for a hyperbolic model of soils

Proceedings of the ICE - Geotechnical Engineering, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Pullout Capacity of Block Anchor in Unsaturated Sand

Unsaturated Soils 2006, 2006

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Parameters for an Elasto-Plasto-Damage Model for the Stress-Strain Behavior of Dense Sand

International Journal of Damage Mechanics, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Plastic-Damage Model for Stress-Strain Behavior of Soils

International Journal of Damage Mechanics, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Horizontal Ground Heat Exchanger Design for Ground-Coupled Heat Pumps

Ground-source heat pump (GSHP) is used as an all in clusive term for a variety of systems that us... more Ground-source heat pump (GSHP) is used as an all in clusive term for a variety of systems that use the ground, ground water and surfa ce water as a heat source and sink. There are several examples of various types of GSHPs which ar e subdivided into ground-coupled heat pumps (GCHPs), ground water heat pumps (GWHPs) and surfac e water

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of Specimen Geometry and Testing Method on Mixed Mode I-II Fracture Toughness of a Limestone Rock from Saudi Arabia

Rock Mechanics and Rock Engineering, 2000

Bookmarks Related papers MentionsView impact