Design of reinforced concrete deep beams / Mohamed Chemrouk (1984) 

Public ISBD Titre : Design of reinforced concrete deep beams Type de document : texte imprimé Auteurs : Mohamed Chemrouk, Auteur ; F. K. Kong, Directeur de thèse Editeur : University of Newcastle Upon Tyne Année de publication : 1984 Importance : 184 f. Présentation : ill. Format : 27 cm. Note générale : Mémoire de Master : Civil Engineering : Angleterre, University of Newcastle Upon Tyne : 1984 Mémoire de Master en Génie Civil Bibliogr. f. 180-184. - Annexes Langues : Anglais (eng) Mots-clés : Deep beams Elastic analysis CIRIA guide Linear variable displacement transducers Electrical demountable strain transducers Index. décimale : Ms00184 Résumé : This thesis is concerned with the design of reinforced concrete deep beams for which, elastic analysis had shown that the distribution of bending and shear stresses differs completely from that given by the ordinary beam formulae. A number of experimental investigations, studying the behaviour of such structural elements are reviewed in details. The design procedures currently used by practising engineers are outlined and explained with design applications. Openings, when required through the webs of these beams, affect their strength and serviceability and thus care must be taken to ensure a safe design. The CIRIA guide, containing some provisions for openings and giving some guidelines for the buckling of deep beams, is reviewed in more details. Design examples are also given to illustrate its use. With the development of superplasticizers and the achievement of high concrete strengths, more slender reinforced concrete deep beams will be used in the modern constructions. The stability problem wil, then, be the main design criteria for such members. In this respect, experimental tests, consisting of twelve reinforced high strength concrete beams were carried out. The specimens had depth/thickness ratios ranging from 25 to 66 and were tested under two-point loading applied eccentrically. Linear variable displacement transducers (LVDT) and electrical demountable strain transducers were used to measure the lateral displacements and strains respectively. The main purpose was to investigate the behaviour of these slender deep beams at failure and to compare the results with those predicted by the CIRIA guide. These tests were a part of an on-going research programme conducted in this direction. For tests of this kind, safety is often a major concern. For this, an explanation for the use of the servo-hydraulic jacking equipment is given in an Appendix. Design of reinforced concrete deep beams [texte imprimé] / Mohamed Chemrouk, Auteur ; F. K. Kong, Directeur de thèse . - University of Newcastle Upon Tyne, 1984 . - 184 f. : ill. ; 27 cm. Mémoire de Master : Civil Engineering : Angleterre, University of Newcastle Upon Tyne : 1984 Mémoire de Master en Génie Civil Bibliogr. f. 180-184. - Annexes Langues : Anglais (eng) Mots-clés : Deep beams Elastic analysis CIRIA guide Linear variable displacement transducers Electrical demountable strain transducers Index. décimale : Ms00184 Résumé : This thesis is concerned with the design of reinforced concrete deep beams for which, elastic analysis had shown that the distribution of bending and shear stresses differs completely from that given by the ordinary beam formulae. A number of experimental investigations, studying the behaviour of such structural elements are reviewed in details. The design procedures currently used by practising engineers are outlined and explained with design applications. Openings, when required through the webs of these beams, affect their strength and serviceability and thus care must be taken to ensure a safe design. The CIRIA guide, containing some provisions for openings and giving some guidelines for the buckling of deep beams, is reviewed in more details. Design examples are also given to illustrate its use. With the development of superplasticizers and the achievement of high concrete strengths, more slender reinforced concrete deep beams will be used in the modern constructions. The stability problem wil, then, be the main design criteria for such members. In this respect, experimental tests, consisting of twelve reinforced high strength concrete beams were carried out. The specimens had depth/thickness ratios ranging from 25 to 66 and were tested under two-point loading applied eccentrically. Linear variable displacement transducers (LVDT) and electrical demountable strain transducers were used to measure the lateral displacements and strains respectively. The main purpose was to investigate the behaviour of these slender deep beams at failure and to compare the results with those predicted by the CIRIA guide. These tests were a part of an on-going research programme conducted in this direction. For tests of this kind, safety is often a major concern. For this, an explanation for the use of the servo-hydraulic jacking equipment is given in an Appendix.

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Roadside safety / A. Ramache (1991) 

Public ISBD Titre : Roadside safety : a knowledge-based system for alternative configuration of fixed roadside objects Type de document : texte imprimé Auteurs : A. Ramache, Auteur ; M. G. H. Bell, Directeur de thèse Editeur : University of Newcastle Upon Tyne Année de publication : 1991 Importance : 177 f. Présentation : ill. Format : 27 cm. Note générale : Thèse de Doctorat : Génie Civil : Royaume-Uni, University of Newcastle Upon Tyne : 1991 Bibliogr. f. 178 - 192 . - Annexe f. 193 - 227 Langues : Anglais (eng) Mots-clés : Roadside safety improvements ROSDIS Vehicle roadside accidents Index. décimale : D001091 Résumé : Every time vehicles leave the road they are likely to collide with fixed roadside objects, such as lighting columns, signposts, etc. Traffic and highway engineers have always been faced with the difficult task of making important decisions regarding the selection and implementation of roadside safety improvements. To facilitate their decisions, a knowledge-based system called ROSDIS (ROadside Safety Design and Improvement System) has been developed. This thesis describes the knowledge-based system which constitutes a significant extension of an existing model and uses system safety methodology. A fault tree depicting the process behind any single vehicle roadside accident has been implemented in a prototype program written in Prolog, which has since been refined. Since the most important part of the fault tree lies in the determination of the probabilities of basic underlying events, consideration was given to how they can be related to available and measurable data. An analysis of single vehicle roadside accidents was carried out. The objective here is to extract information from the available data, so it can be utilised by the system. Accident records do not provide all necessary information on the engineering aspect of single vehicle roadside accidents. This lack of information led to the design and implementation of a field procedure to collect the missing data manually. The system enables the user to experiment with different configurations of fixed roadside objects and select the configuration which minimises the probability of collision. The explanation facility of the system allows the user to see why a question is asked by the system and how the probability of collidion was reached. The result of this research should eventually be a quantitative design tool through which a risk situation at the roadside can be assessed and safety decisions made concerning the locations and types of roadside objects. Roadside safety : a knowledge-based system for alternative configuration of fixed roadside objects [texte imprimé] / A. Ramache, Auteur ; M. G. H. Bell, Directeur de thèse . - University of Newcastle Upon Tyne, 1991 . - 177 f. : ill. ; 27 cm. Thèse de Doctorat : Génie Civil : Royaume-Uni, University of Newcastle Upon Tyne : 1991 Bibliogr. f. 178 - 192 . - Annexe f. 193 - 227 Langues : Anglais (eng) Mots-clés : Roadside safety improvements ROSDIS Vehicle roadside accidents Index. décimale : D001091 Résumé : Every time vehicles leave the road they are likely to collide with fixed roadside objects, such as lighting columns, signposts, etc. Traffic and highway engineers have always been faced with the difficult task of making important decisions regarding the selection and implementation of roadside safety improvements. To facilitate their decisions, a knowledge-based system called ROSDIS (ROadside Safety Design and Improvement System) has been developed. This thesis describes the knowledge-based system which constitutes a significant extension of an existing model and uses system safety methodology. A fault tree depicting the process behind any single vehicle roadside accident has been implemented in a prototype program written in Prolog, which has since been refined. Since the most important part of the fault tree lies in the determination of the probabilities of basic underlying events, consideration was given to how they can be related to available and measurable data. An analysis of single vehicle roadside accidents was carried out. The objective here is to extract information from the available data, so it can be utilised by the system. Accident records do not provide all necessary information on the engineering aspect of single vehicle roadside accidents. This lack of information led to the design and implementation of a field procedure to collect the missing data manually. The system enables the user to experiment with different configurations of fixed roadside objects and select the configuration which minimises the probability of collision. The explanation facility of the system allows the user to see why a question is asked by the system and how the probability of collidion was reached. The result of this research should eventually be a quantitative design tool through which a risk situation at the roadside can be assessed and safety decisions made concerning the locations and types of roadside objects.

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The application of number theoretic transforms to two-dimensional convolution and adaptive filtering / Farid Marir (1986) 

Public ISBD Titre : The application of number theoretic transforms to two-dimensional convolution and adaptive filtering Type de document : texte imprimé Auteurs : Farid Marir, Auteur ; A. G. J. Holt, Directeur de thèse Editeur : University of Newcastle Upon Tyne Année de publication : 1986 Importance : 245 f. Présentation : ill. Format : 30 cm. Note générale : Thèse de Doctorat : Électronique : Royaume-Uni, University of Newcastle Upon Tyne : 1986 Annexe f. 246 - 274 . - Bibliogr. f. 275 - 281 Langues : Anglais (eng) Mots-clés : Number theoretic transforms Digital signal processing TWO-dimensional convolution Index. décimale : D004186 Résumé : The interest given to the application of number theoretic transforms (NTTs) to digital signal processing has not ceased to grow. Indeed, the last decade has seen an uninterrupted investigation into their utilization. In this thesis, a further inverstigation into their performance, in digital signal processing, is considered. A small contribution to the interpretation of the number domain, domain generated by the transform, is given and it is shown that NTT sequences present regular structures, especially in two dimensions, where examples of curious patterns of zeros are given. The processing of large pictures, without transposing the image array and without recourse to the sectioning techniques, is also considered. Finally, it is shown that NTTs performance in the adaptive field presents some very interesting results that make such transforms a definite candidate in digital signal processing applications. The application of number theoretic transforms to two-dimensional convolution and adaptive filtering [texte imprimé] / Farid Marir, Auteur ; A. G. J. Holt, Directeur de thèse . - University of Newcastle Upon Tyne, 1986 . - 245 f. : ill. ; 30 cm. Thèse de Doctorat : Électronique : Royaume-Uni, University of Newcastle Upon Tyne : 1986 Annexe f. 246 - 274 . - Bibliogr. f. 275 - 281 Langues : Anglais (eng) Mots-clés : Number theoretic transforms Digital signal processing TWO-dimensional convolution Index. décimale : D004186 Résumé : The interest given to the application of number theoretic transforms (NTTs) to digital signal processing has not ceased to grow. Indeed, the last decade has seen an uninterrupted investigation into their utilization. In this thesis, a further inverstigation into their performance, in digital signal processing, is considered. A small contribution to the interpretation of the number domain, domain generated by the transform, is given and it is shown that NTT sequences present regular structures, especially in two dimensions, where examples of curious patterns of zeros are given. The processing of large pictures, without transposing the image array and without recourse to the sectioning techniques, is also considered. Finally, it is shown that NTTs performance in the adaptive field presents some very interesting results that make such transforms a definite candidate in digital signal processing applications.

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The behaviour of epoxy resins with particular reference to the influence of bond strength and curing conditions on the performance of screeds / Salah Eddine Boudraa (1985) 

Public ISBD Titre : The behaviour of epoxy resins with particular reference to the influence of bond strength and curing conditions on the performance of screeds Type de document : texte imprimé Auteurs : Salah Eddine Boudraa, Auteur ; D. R. Plum, Directeur de thèse Editeur : University of Newcastle Upon Tyne Année de publication : 1985 Importance : 165 f. Présentation : ill. Format : 27 cm. Note générale : Mémoire de Master : Civil Engineering : Angleterre, University of Newcastle Upon Tyne : 1985 Mémoire de Master en Génie Civil Bibliogr. f. 155-165. - Annexes f. [162 ] Langues : Anglais (eng) Mots-clés : Epoxy resin concrete Polymers Inherent stickiness Binders Indirect tensile strengths Index. décimale : Ms00185 Résumé : This thesis aimed to begin the work of investigating the physical and mechanical properties of epoxy resin concrete and to assess the influence of different curing regimes on the behaviour of such resins. It is started by an introduction into the chemistry of polymers. Since polymers are used as binders in resin concrete, to grasp the behaviour of such polymers is very important in the understanding of the behaviour of polymer concrete. A description of the different kinds of concrete using polymers is then carried out. Practical considerations as well as theoretical ones are considered for the epoxy resin concrete flooring. In the experimental procedure a new technique of testing as well as new instrumentation have been thought of to assess the bond strength ability. And this has been done for the five different types of epoxy resins available used throughout the experimental procedure. Because of the inherent stickiness of the binders and the small quantities involved in the mixing, new techniques for moulding and demoulding the specimens have been used to avoid the problems arising from such difficulties. The compressive and indirect tensile strengths of the five different types of epoxy resins have been assessed together with the influence of different curing regimes including variations in length of cure and curing temperatures. The behaviour of the epoxy resins under different rates of loading and periods of cure was looked at. The compressive modulus of elasticity was calculated for the fastest rate of loading and compared with the values given by the manufacturers when available. The other values of compressive and indirect tensile strengths were also compared with the values in the literature when available. Finally, a modest preliminary work into the creep properties, due to the lack of precise instrumentation within the time allowed for the practical work (instantaneous strain measurement devices, compressive loading machine capable of self adjustment...) was carried out. Therefore the creep data presented is merely sufficient for comparison purposes between the different epoxy resins available or for grasping the importance of creep for such materials when looking at the data representing the amplitude of the creep strains. The behaviour of epoxy resins with particular reference to the influence of bond strength and curing conditions on the performance of screeds [texte imprimé] / Salah Eddine Boudraa, Auteur ; D. R. Plum, Directeur de thèse . - University of Newcastle Upon Tyne, 1985 . - 165 f. : ill. ; 27 cm. Mémoire de Master : Civil Engineering : Angleterre, University of Newcastle Upon Tyne : 1985 Mémoire de Master en Génie Civil Bibliogr. f. 155-165. - Annexes f. [162 ] Langues : Anglais (eng) Mots-clés : Epoxy resin concrete Polymers Inherent stickiness Binders Indirect tensile strengths Index. décimale : Ms00185 Résumé : This thesis aimed to begin the work of investigating the physical and mechanical properties of epoxy resin concrete and to assess the influence of different curing regimes on the behaviour of such resins. It is started by an introduction into the chemistry of polymers. Since polymers are used as binders in resin concrete, to grasp the behaviour of such polymers is very important in the understanding of the behaviour of polymer concrete. A description of the different kinds of concrete using polymers is then carried out. Practical considerations as well as theoretical ones are considered for the epoxy resin concrete flooring. In the experimental procedure a new technique of testing as well as new instrumentation have been thought of to assess the bond strength ability. And this has been done for the five different types of epoxy resins available used throughout the experimental procedure. Because of the inherent stickiness of the binders and the small quantities involved in the mixing, new techniques for moulding and demoulding the specimens have been used to avoid the problems arising from such difficulties. The compressive and indirect tensile strengths of the five different types of epoxy resins have been assessed together with the influence of different curing regimes including variations in length of cure and curing temperatures. The behaviour of the epoxy resins under different rates of loading and periods of cure was looked at. The compressive modulus of elasticity was calculated for the fastest rate of loading and compared with the values given by the manufacturers when available. The other values of compressive and indirect tensile strengths were also compared with the values in the literature when available. Finally, a modest preliminary work into the creep properties, due to the lack of precise instrumentation within the time allowed for the practical work (instantaneous strain measurement devices, compressive loading machine capable of self adjustment...) was carried out. Therefore the creep data presented is merely sufficient for comparison purposes between the different epoxy resins available or for grasping the importance of creep for such materials when looking at the data representing the amplitude of the creep strains.

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The conflict between the built environment created by the recent housing schemes in Algiers and the expectations of those for whom they are designed / Abdel Ghani Angal (1990) 

Public ISBD Titre : The conflict between the built environment created by the recent housing schemes in Algiers and the expectations of those for whom they are designed Type de document : texte imprimé Auteurs : Abdel Ghani Angal, Auteur ; Graham Tipple, Directeur de thèse Editeur : University of Newcastle Upon Tyne Année de publication : 1990 Importance : 536 f. Présentation : ill. Format : 27 cm. Note générale : Thèse de Doctorat : Philosophy in Architecture : United Kingdom, University of Newcastle Upon Tyne : 1990 Annexe f. 1 - 26 . - Bibliogr. f. 1 - 13 Langues : Anglais (eng) Mots-clés : Housing  Prefabricated systems methods Traditional -- construction Algeria Index. décimale : D000990 Résumé : Algeria, like many governments in the Third World, has developed ambitious plans for the production of housing in order to meet the growing demand. These programmes principally attempt to solve the problems of housing through the use of industrialised production of components or units. Although the initiative for an industrial approach had a very significant effect on the housing shortage, a conflict has emerged owing to the environment produced which does not adequately provide for the Algerian way of living and expression of the people. This study examines the use of prefabricated systems methods in comparison with traditional construction and discusses the problems of organisation and management associated with such prefabricated methods. Included in the analysis are such factors as decisions affecting the design of the recent housing schemes, the acceptability of the product by the users and their preferences. Finally, some proposals and recommendations facus on methods of maintaining the traditional urban values using the potential of industrial techniques. The conflict between the built environment created by the recent housing schemes in Algiers and the expectations of those for whom they are designed [texte imprimé] / Abdel Ghani Angal, Auteur ; Graham Tipple, Directeur de thèse . - University of Newcastle Upon Tyne, 1990 . - 536 f. : ill. ; 27 cm. Thèse de Doctorat : Philosophy in Architecture : United Kingdom, University of Newcastle Upon Tyne : 1990 Annexe f. 1 - 26 . - Bibliogr. f. 1 - 13 Langues : Anglais (eng) Mots-clés : Housing  Prefabricated systems methods Traditional -- construction Algeria Index. décimale : D000990 Résumé : Algeria, like many governments in the Third World, has developed ambitious plans for the production of housing in order to meet the growing demand. These programmes principally attempt to solve the problems of housing through the use of industrialised production of components or units. Although the initiative for an industrial approach had a very significant effect on the housing shortage, a conflict has emerged owing to the environment produced which does not adequately provide for the Algerian way of living and expression of the people. This study examines the use of prefabricated systems methods in comparison with traditional construction and discusses the problems of organisation and management associated with such prefabricated methods. Included in the analysis are such factors as decisions affecting the design of the recent housing schemes, the acceptability of the product by the users and their preferences. Finally, some proposals and recommendations facus on methods of maintaining the traditional urban values using the potential of industrial techniques.

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The mechanical and physical properties of epoxy resins and their influence on the performance of screeds / O. Bendeddouche (1985)

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