Academic literature on the topic 'Constructions en béton armé – Innovation'
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Journal articles on the topic "Constructions en béton armé – Innovation":
Bezzazi, Mohammed, Abdellatif Khamlichi, and José Ramón Arango González. "Vulnérabilité sismique des constructions de type béton armé au Nord du Maroc." Canadian Journal of Civil Engineering 35, no. 6 (June 2008): 600–608. http://dx.doi.org/10.1139/l08-010.
El Haouzi, A., A. Khamlichi, M. Bezzazi, and F. Lopez Almansa. "Evaluation de la vulnérabilité sismique des constructions en béton armé en vue de leur réhabilitation." MATEC Web of Conferences 2 (2012): 02003. http://dx.doi.org/10.1051/matecconf/20120202003.
KOUTOUS, Ahmed, Guillaume LACOMBE, and Ali HAMMANI. "Les « notfias » du Maroc : une technique ancestrale de collecte et stockage des eaux pluviales." Techniques Sciences Méthodes 7-8 (August 21, 2023): 87–95. http://dx.doi.org/10.36904/tsm/202307087.
Kettar, Jalal, Khadija Baba, Abderrahman Nounah, and Lahcen Bahi. "Mechanical behavior of the reinforced concrete frame with masonry filling Comportement mécanique des portiques en béton armé avec remplissage en maçonnerie." MATEC Web of Conferences 149 (2018): 02062. http://dx.doi.org/10.1051/matecconf/201814902062.
Dissertations / Theses on the topic "Constructions en béton armé – Innovation":
Hangan, Sandu. "Les premiers bétons armés dans l’architecture des églises catholiques en France (1890-1940) : une fusion entre innovation et tradition à l’épreuve de la restauration contemporaine." Electronic Thesis or Diss., Paris Est, 2024. http://www.theses.fr/2024PESC2002.
This research explores a period of half a century (1890-1940) during which the new technique of reinforced concrete underwent exponential growth, moving from a primitive phase of individual experimentation to a classic phase of conventional practices. Thanks to its reliance on centuries-old models, religious architecture serves as a revealer of this phenomenon of collective appropriation. Assimilation, innovation or interpretation are immediately exposed against this stable programmatic background. The selected buildings are representative both for the different currents of artistic ideas and for the profusion of variations of the early reinforced concrete in France. Only a typological analysis can systematically organize the vast corpus, because examination by styles is intricate in the face of the architectural and decorative complexity translated into rationalist, neo-medieval, regionalist or art-deco influences, often used in a puzzling way. Indeed, these churches, mostly listed today as historic monuments, represent the rear-guard of eclecticism and the last witnesses of the traditional art of building preceding the industrialization of construction. Their reinforced concretes are made in a craftsmanship manner and bear traces of imperfections which today raise specific preservation questions. The subject of restoration and maintenance of reinforced concrete churches is presented through technical, heritage and environmental topics. The first reinforced concretes are fragile and can be restored by special, invasive, expensive and sometimes labile means, while there are very few restoration sites treating the building as a whole. The experience of architects is still recent in this field, which means that the definition of a shared methodology for restoring the first reinforced concrete remains an open subject
Bouillard, Théophile. "Optimisation et caractérisation d'un béton haute performance renforcé par des fibres résistantes à la corrosion." Electronic Thesis or Diss., Toulouse 3, 2023. http://www.theses.fr/2023TOU30370.
This thesis is a part of a research project initiated by the French National Agency for Radioactive Waste Management (Andra), which has been responsible for radioactive waste storage facilities in France since 1991. In addition to active storage sites, Andra oversees the Cigéo project that aims to dispose high-risk radioactive waste at a deep geological disposal. The Cigéo project includes underground galleries located 500 meters below the surface, designed for the long-term storage of radioactive waste. It is divided into two main phases: the first involves the transportation of radioactive waste packages into the galleries, while the second phase encompasses the storage itself, sealing the project and rendering it infeasible to any human intervention. This thesis addresses the challenges of sustainability, stability, and health monitoring of the structures. Conventional reinforced concrete is susceptible to corrosion, generating dihydrogen in the anoxic environment of the galleries. Thus, leading to a long-term risk of overpressure. To mitigate this risk, Andra is exploring alternatives to conventional reinforced concrete; one of which is the incorporation of non-corrosive fibers to reduce the rate of reinforcement. Two types of fibers have been selected: the firsts, FIBRAFLEX fibers (FF) provided by Saint-Gobain SEVA are amorphous metallic fibers. They are characterized by high aspect ratio, corrosion resistance, and high electrical conductivity. The second type, carbon fibers (CF), provided by Toray Carbon and processed by Apply Carbon, are known for their high tensile strength, high elastic modulus, and small diameter. The manuscript is divided into four main sections. In addition to the literature review, the second part focused on the mechanical characterization and formulation development. Various fiber reinforcement configurations were tested, with dosages of 0.27% and 0.41% by volume for FF. For CF, two sets were tested: with sizing and without sizing at a dosage of 0.27%. Compression and elastic modulus tests showed no significant impact of the fibers on these properties. However, in flexural tensile tests, FF fibers improved the ductility of the concrete and crack control upon their initiation by increasing the residual tensile strength after the peak. The CF, on the other hand, did not yield significant improvements. The third section studied the impact of fibers on the electrical resistivity of concrete and its potentiality for damage detection. Flexural tests revealed a correlation between electrical resistivity and crack opening; particularly in batches with CF, which exhibited sensitivity even before crack initiation. Batches with FF fibers also provided reliable results, but they required a crack initiation to observe a significant change in electrical resistivity. Lastly, the final experimental campaign focused on the mechanical behavior of steel reinforced and fiber-reinforced concrete structural elements. The tests involved four-point bending on real-scale beams with different combinations of steel and fiber reinforcements. It was demonstrated that FF limited crack openings in the elastic-cracking phase of the beams while slightly enhancing their strengths. In parallel, various data acquisition systems, including optical fibers, digital image correlation, electrical resistance measurements, and acoustic emission analysis, were used to monitor beam damage. These indirect measurement techniques precisely detected damage in the beams, and the addition of fibers improved the reliability of these measurements
Reimeringer, Mathieu. "Contribution à l'étude de l'effondrement d'une structure en béton armé." Orléans, 2005. http://www.theses.fr/2005ORLE2022.
Langlois, Anne-Marie. "Influence de l'endommagement sur la fiabilité structurale de ponts en béton armé : étude de cas." Master's thesis, Université Laval, 2010. http://hdl.handle.net/20.500.11794/21327.
A computer program, named « Laval Reliability Toolbox 2 » (LRT2), was developed in order to evaluate a time-variant reliability index for a reinforced concrete bridge while considering various usage and damage parameters. This tool pioneers by considering the reliability of three ultimate limit states: flexure and shear for beams and punching shear for the slab. In order to represent the failure mode of the bridge, system reliability analysis is used to model the structure as a system. A damage model predicts in time the properties of a structure undergoing corrosion caused by the application of de-icing salts: corrosion causes a reduction of the rebar’s diameter and spalling of the concrete cover. This computer tool was used to compare the reliability of bridges with two, three, five and six girders undergoing different damaging scenarios. Results show the importance of considering a spatial-variant reliability index for a girder. It is also shown that ignoring possible correlation among structural elements overestimates the reliability of low-redundant structures, modelled as series systems, and underestimates the reliability of high-redundant structures, modelled as complex systems. The study of homogeneous and non-homogeneous damaging scenarios shows the existence of corrosion-sensitive sections and failure modes that, if damaged, affect significantly the reliability of the bridge. Lastly, performance cycles were defined in order to evaluate the life service of a bridge, which is to estimate the time when the bridge will get below its target reliability index and to estimate when certain damages will occur. This type of methodology enables the prediction of a structure’s lifetime performance; it could facilitate the management of structures operations by making possible the comparison of multiple bridges performance.
Casaux-Ginestet, Géraldine. "Modélisation tridimensionnelle du comportement sismique d'ouvrages en béton armé : développement de méthodes simplifiées." Cachan, Ecole normale supérieure, 2003. http://www.theses.fr/2003DENS0033.
Hamza, Sami. "Analyse probabiliste de la vulnérabilité sismique des bâtiments existants : application aux structures à portiques en béton armé." Université de Marne-la-Vallée, 2007. http://www.theses.fr/2007MARN0332.
The civil engineering structures contain many sources of uncertainties, specially for the ageing ones, for which there is lake of data about the initial conditions and the evolution of the material properties in time. Earthquake regulations propose for that kind of buildings to proceed either with linear and nonlinear analysis to evaluate their resistance. This research aims to propose a methodology to estimate the reliability of a R/C frame structure under earthquake, taking into account the non linear behavior of the materials and the uncertainties in the dynamic system. The mean model is based on a a nonlinear finite element modelling of the structure. This FEM modelling allows to completely identify the failure mode into the structure : kind, cause, order. . . A stochastic linear analysis is made using the non parametric model applied to the reduced matrices of mass, stiffness and damping of the mean model and a Monte Carlo procedure. The random nonlinear behavior is then, treated by developing a mixed probabilistic model, combining a non parametric model applied on the reduced dynamic system and representing the linear part of the structure ; and a parametric model applied on the plastic localised parts of the structural element, representing the nonlinear part. Taking into account the effects of randomness in the nonlinearities allows us, on the one hand, to estimate the sensitivity of the structure to linear uncertainties in the case of a nonlinear behavior ; and on another hand, to compare this sensitivity to the linear and nonlinear uncertainties
Cheriet, Taoufik. "Contribution à l’étude du béton arme expansif." Lyon, INSA, 1989. http://www.theses.fr/1989ISAL0057.
Sabri, Mohamed. "Contribution à l'analyse de la réponse aux chocs de structures en béton armé." Chambéry, 2006. http://www.theses.fr/2006CHAMS037.
In mountainous regions where the risk of rock falls on structures is significant, one of the current preoccupations is to identify the impact forces and to analyse the damage of impacted structures. The purpose of the presented study is to provide a contribution to the response analysis of reinforced concrete structures under shocks. Three axes have been approached in this study : (i) The direct analysis of impact solicitations. This study is concentrating on developing the shock behaviour equations by means of differential or partial differential equations. The solution of studied problems has been established by developing an analytical method of resolution (the model of double deformable masses) and by finite element method. The developed direct analysis allows, on the one hand, to obtain the displacements, deformations and accelerations fields at shock and, on the other hand, to evaluate the sensibility of direct response to input variables, with a view to the inverse analysis. (ii) The inverse analysis of impact solicitations. This analysis points out the two main difficulties of inverse problems due to dynamic solicitations: on the one hand, the experimentation and real boundary conditions misappreciation problems and, on the other hand, the specific problems related to inverse problem resolution. (iii) The development of simplified models applied to the impact force estimation in the structurally dissipating rock-shed. The work realized in this third part propounds damage and applied forces estimation approach using experimental measurements. The results of this research are applicable in early phase of conception or in pre-project phase where the forces in impacted slabs or beams are analysed in function of geometry
Razani, Mahmoud. "Contribution à l’étude du comportement des dalles en béton arme et fibre sous sollicitation de choc." Lyon, INSA, 1990. http://www.theses.fr/1990ISAL0036.
[The aim of our work is to determine the characteristics induced in the behaviour of reinforced concrete slabs under impact of deformable projectiles, by mixing metallic fibres with concrete. In the bibliographic chapter, we first present the essential computation methods for one-degree and distributed-mass systems, and large-scale tests of slabs intended to give empirical formulas direct! y used in design of particular buildings. Then, we lay out principal tests showing the influence of parameters such as material characteristics, shape of specimen, and loading conditions, on the mechanical behaviour of specimens (pattern of failure, strain energy, -strength,. . . ). Second chapter concerns static and impact instrumented tests carried out on materials, showing the influence of strain rate on the compression stress-strain curve. The third chapter describes static and impact tests on slabs. Deflections and strains at different points of the slab and sections, and also the load, are measured. Load-deflection and moment-curvature curves are deduced. In the last chapter, first, moment-curvature curves of sections are computed from stress-strain curves of materials, by a numerical method taking into account post-rupture part of concrete tension stress-strain curve. Secondly, impact response of slabs is computed, using a finite element numerical code, considering bilinear moment-curvature curves. Third part concerns numerical computation by modelling the slab and its elastic support into undamped two-degree spring-mass system, considering variations of flexibility coefficient at cracking and plastification. Last part contains a simple method based on rectangular load function and bilinear elastoplastic moment-curvature curves. ]
Delhomme, Fabien. "Etude du comportement sous impact d'une structure pare-blocs en béton armé." Chambéry, 2005. http://www.theses.fr/2005CHAMS004.
This thesis studies the behaviour of a new concept for a protection gallery under rock fall, called Structurally Dissipating Rock-shed (SDR). The main innovation, compared to conventional solutions, is to dissipate the impact energy directly into the reinforced concrete slab or into fuse supports, and no longer in a cushion layer. The dynamic phenomena, taking place during the impact of a block onto the slab, are analyzed by means of experiments on a 1/3 scale SDR structure. The percussion loads applied to the slab, during the contact phase with the block, are assessed as weIl as the various energy transfers and dissipations. The results allowed to validate the operating and repair principles of the SDR and revealed that the slab is damaged by three main mechanisms: the punching, the bending and the breaking clown at surface level of the impacted zone. The principal experimental values are found by numerical simulations of the tests with a finite elements tool. A simplified mechanical model "masses-springs-damping" is also developed with the aim of implementing design methods for engineering offices. The prospects for this work are to succeed in establishing design and construction recommendations for structurally dissipating rock-sheds
Books on the topic "Constructions en béton armé – Innovation":
Collins, Peter. Splendeur du béton: Les prédécesseurs et l'oeuvre d'Auguste Perret. Paris: Hazan, 1995.
B, Bamforth P., Figg J. W, and International Symposium on Corrosion of Reinforcement in Concrete Construction (4th : 1996 : Cambridge, England), eds. Corrosion of reinforcement in concrete construction. Cambridge: Royal Society of Chemistry, Information Services, 1996.
Beletich, A. S. Design handbook for reinforced concrete elements. 2nd ed. Sydney: UNSW Press, 2003.
Brzev, Svetlana. Reinforced concrete design: A practical approach. Boston, MA: Pearson Learning Solutions, 2013.
Paille, Jean-Marie. Calcul des structures en be ton. Paris: Eyrolles, 2009.
béton, Comité euro-international du, ed. Seismic design of reinforced concrete structures for controlled inelastic response: Design concepts. London: Thomas Telford, 1998.
Samikian, Aram. Béton armé, calcul aux états limites: Théorie et pratique. Montréal, Québec, Canada: G. Morin, 1987.
Workshop on Nonlinear Seismic Analysis of Reinforced Concrete Buildings (1992 Bled, Slovenia). Nonlinear seismic analysis and design of reinforced concrete buildings. London: Elsevier Applied Science, 1992.
Shahrooz, Bahram M. Design of concrete structures using high-strength steel reinforcement. Washington, D.C: Transportation Research Board, National Research Council, 2011.
Martin, L. H. Structural design in concrete to BS8110. LONDON: Edward Arnold, 1989.
Book chapters on the topic "Constructions en béton armé – Innovation":
Samaï Bouadjadja, Assia. "Les constructions en béton armé Hennebique dans l’est algérien : commanditaires et entrepreneurs (1900-1930)." In Construire au-delà de la Méditerranée, 138–47. Publications de l’Institut national d’histoire de l’art, 2012. http://dx.doi.org/10.4000/books.inha.12469.