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Author : Daniel Palermo
Publisher : National Library of Canada = Bibliothèque nationale du Canada
Page : 984 pages
File Size : 43,8 Mb
Release : 2002
Category : Electronic
ISBN : 0612691144
Author : Aly Marei Said
Publisher : Unknown
Page : 434 pages
File Size : 54,7 Mb
Release : 2004
Category : Electronic
ISBN : OCLC:1066942176
Author : Farhad Aslani
Publisher : Trans Tech Publications Ltd
Page : 284 pages
File Size : 51,5 Mb
Release : 2015-03-14
Category : Technology & Engineering
ISBN : 9783038267232
Experimental programs in laboratories give real results to identify nonlinear behavior of reinforced concrete (RC) structures but they are limited to knowledge of particular cases under restricted structural dimensions, sizes, shapes, loading and boundary conditions but the computational simulation approach has no limit to its application. Constitutive models are developed to simulate the dynamic nonlinear response of concrete and steel reinforcement subjected to cyclic loading varying randomly in magnitude. The behavior of structural concrete under monotonic loading is affected by important material aspects including cracking, crushing, tension stiffening, compression softening and bond slip. Reversed cyclic loading introduces further complexities such as stiffness degradation in concrete and the Bauschinger effect in reinforcing steel. In this research the validity and reliability of some proposed constitutive models for concrete considering general loading i.e. cyclic, monotonic, partial, common point and transition loading are evaluated. Amongst many existing constitutive models, because of their simplicity and common usage in the finite element analysis of RC structures, only some common proposed models based on nonlinear elasticity-based approach are investigated. These models are verified against experimental data available in the literature and the results are discussed. In this study, also, a hysteretic stressstrain model is developed for unconfined concrete with the intention of providing efficient modeling for the structural behavior of concrete in seismic regions. The proposed model is based on the findings of previous experimental and analytical studies. The model for concrete subjected to monotonic and cyclic loading, comprises four components in compression and tension; an envelope curve (for monotonic and cyclic loading), an unloading curve, a reloading curve, and transition curve. Also presented are formulations for partial unloading and partial reloading curves. The proposed Constitutive model reliability is investigated by RC members non-linear finite element analysis (FEM) using by finite element software ABAQUS. Comparisons with test results showed that the proposed model provides a good fit to a wide range of experimentally established hysteresis loops.
Author : Adolfo Benjamin Matamoros
Publisher : Unknown
Page : 218 pages
File Size : 42,6 Mb
Release : 2006
Category : Technology & Engineering
ISBN : UOM:39015064805719
A joint technical session was organized by Joint ACI-ASCE Committees 441, Reinforced Concrete Columns, and 445, Shear and Torsion, during the American Concrete Institute's Fall 2004 Convention in San Francisco, CA. The goal of the technical session was to showcase recent developments in this area, with the hope that continued discussion will lead to improved models that are suitable for performance-based engineering. This symposium publication is a collection of technical articles presented at that meeting and represents an effort from Joint ACI-ASCE Committees 441 and 445 to continue the technical discussion on this topic. (From preface.)
Author : Bruce William Slight
Publisher : Unknown
Page : 0 pages
File Size : 41,8 Mb
Release : 1974
Category : Buildings, Reinforced concrete
ISBN : OCLC:1433241238
This dissertation presents a method of predicting the load-deformation response of a reinforced concrete member under repeated reversing cyclic load. Deformations due to flexure, shear and axial load are accounted for at all times using separate hysteresis loops for flexure and shear. A method of predicting the response of a reinforced concrete frame subjected to an earthquake loading is pre sented. The method accounts for deformations in addition to elastic flexural deformations by introducing an equiva lent rotational spring at each member end. By defining the properties of the spring properly, the response of the model can closely simulate that of the actual member. Standard slope deflection equations are modified to accommodate elastic members with rotational springs at their ends. When these equations are used to construct the frame stiffness matrix, computations in the inelastic range can be done in the same manner as those in the elastic range. The stiffness matrix is thus updated to be compat ible with the deteriorated structure at each instant of the motion. The equations of motion are solved using a linear acceleration method. A behavioral study is presented based on the analyses of seven twenty story shear wall structures. Variables with in the behavioral study were horizontal force factor K,shear stiffness and taper. The results of the behavioral study are discussed and compared and conclusions drawn.
Author : Alex Yao Sallah,Civil Carleton University. Dissertation. Engineering,ProQuest Co
Publisher : Unknown
Page : 248 pages
File Size : 51,6 Mb
Release : 1983
Category : Electronic
ISBN : OCLC:290207971
Author : Arya, Anand S,Boen, Teddy,Ishiyama, Yuji
Publisher : UNESCO
Page : 191 pages
File Size : 55,7 Mb
Release : 2014-08-25
Category : Electronic
ISBN : 9789230000325
Author : Anonim
Publisher : Government Printing Office
Page : 206 pages
File Size : 52,7 Mb
Release : 2015
Category : Science
ISBN : 0160926750
The Rapid Visual Screening (RVS) handbook can be used by trained personnel to identify, inventory, and screen buildings that are potentially seismically vulnerable. The RVS procedure comprises a method and several forms that help users to quickly identify, inventory, and score buildings according to their risk of collapse if hit by major earthquakes. The RVS handbook describes how to identify the structural type and key weakness characteristics, how to complete the screening forms, and how to manage a successful RVS program.
Author : Joachim Roesler,Harald Harders,Martin Baeker
Publisher : Springer Science & Business Media
Page : 540 pages
File Size : 48,5 Mb
Release : 2007-10-16
Category : Science
ISBN : 9783540734482
How do engineering materials deform when bearing mechanical loads? To answer this crucial question, the book bridges the gap between continuum mechanics and materials science. The different kinds of material deformation are explained in detail. The book also discusses the physical processes occurring during the deformation of all classes of engineering materials and shows how these materials can be strengthened to meet the design requirements. It provides the knowledge needed in selecting the appropriate engineering material for a certain design problem. This book is both a valuable textbook and a useful reference for graduate students and practising engineers.
Author : Sir Bernard M. Feilden
Publisher : Getty Publications
Page : 102 pages
File Size : 42,9 Mb
Release : 1987-10-01
Category : Art
ISBN : 9780892361281
This handbook addresses three areas of concern for the museum administrator concerning the protection of historic buildings, monuments, and archaeological sites located in seismic areas. It proposes pre-disaster measures such as taking accurate and complete documentation (photogrammetry is discussed in one of the 13 appendixes), risk awareness, planning, maintenance and inspections, etc. Second, when an earthquake strikes, the immediate emergency steps necessary to protect life and property are indicated; and after the earthquake, the strengthening of valuable cultural property (based on the Modified Mercalli Intensity Scale, also in an appendix) should be included in the general program of prevention maintenance along with the repairs discussed in detail applicable to each architectural element, and to the site as a whole.
Author : Applied Technology Council
Publisher : Unknown
Page : 556 pages
File Size : 53,5 Mb
Release : 1978
Category : Buildings
ISBN : UOM:39015009803274
Author : Anonim
Publisher : Unknown
Page : 475 pages
File Size : 45,9 Mb
Release : 1994
Category : Asphalt concrete
ISBN : OCLC:30433935
Author : Anonim
Publisher : U.S. Government Printing Office
Page : 326 pages
File Size : 41,5 Mb
Release : 1997
Category : Architecture
ISBN : MINN:31951D014124273
Author : Ekkehard Fehling,Michael Schmidt,Joost Walraven,Torsten Leutbecher,Susanne Fröhlich
Publisher : John Wiley & Sons
Page : 198 pages
File Size : 54,9 Mb
Release : 2015-04-20
Category : Technology & Engineering
ISBN : 9783433030875
Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since. Ultra high performance concrete (UHPC) is a milestone in concrete technology and application. It permits the construction of both more slender and more durable concrete structures with a prolonged service life and thus improved sustainability. This book is a comprehensive overview of UHPC - from the principles behind its production and its mechanical properties to design and detailing aspects. The focus is on the material behaviour of steel fibre-reinforced UHPC. Numerical modelling and detailing of the connections with reinforced concrete elements are featured as well. Numerous examples worldwide - bridges, columns, facades and roofs - are the basis for additional explanations about the benefits of UHPC and how it helps to realise several architectural requirements. The authors are extensively involved in the testing, design, construction and monitoring of UHPC structures. What they provide here is therefore a unique synopsis of the state of the art with a view to practical applications.
Author : Joachim Scheer
Publisher : John Wiley & Sons
Page : 345 pages
File Size : 40,9 Mb
Release : 2011-08-24
Category : Technology & Engineering
ISBN : 9783433600979
Gilt immer noch, dass ein Bauwerkseinsturz der beste Lehrmeister für den Fortschritt des Bauens ist? Oder, anders formuliert: Ist Bauen dann, wenn wir das Bewährte verlassen und Neues wagen, "Experimentieren"? Über die Ursache von Schadensfällen und Einstürzen, die oft mit dem Verlust von Menschenleben verbunden sind, wird nicht gern öffentlich gesprochen. Aber aus Fehlern kann man lernen. Die Lehren und Erfahrungen aus den Schadensauswertungen führen zu mehr Sicherheit und oft zum Innovationsschub. Die Kenntnis der Schadensursachen ist Voraussetzung für ihre zukünftige Vermeidung. Mit diesem Buch liegt eine systematische Zusammenstellung von über 400 Versagensfällen vor, die in besonderer Weise betrachtet werden: Sie werden nach dem Zeitpunkt ihres Auftretens im Lebenszyklus der Brücke, z. B. im Bauzustand oder im Betrieb, und nach den Schadensereignissen, z. B. Anprall oder Erdbeben, geordnet. Die wichtigsten Ursachen sind: menschliches Versagen, mangelnde Aussteifung, Materialversagen oder Überlastung. Es werden vorwiegend Brückeneinstürze, die in der Literatur wenig oder nach dem Urteil des Verfassers nicht vollständig oder nicht zutreffend behandelt sind, ausführlich analysiert. Mit Akribie gesammelt, kompetent und exzellent aufgearbeitet und mit Mut präsentiert, ergibt dies eine unverzichtbare Erkenntnisquelle für jeden Bauingenieur in der Praxis und für das Studium. Ein Katalog von Regeln wurde erstellt. Seine Beachtung kann helfen, Fehler bei Entwurf, Planung und Ausführung zu vermeiden.