NON LINEAR SEISMIC ANALYSIS OF ANCIENT BUILDINGS Structural Characterization for Successful Seismic Retrofit
Author: Diogo Filipe de Sousa Micael Pereira | Size: 364 KB | Format:PDF | Quality:Unspecified | Publisher: Department of Civil Engineering and Architecture – Instituto Superior Técnico – Universidade Técnica de Lisboa | pages: 11
Society’s social and cultural awareness for the importance of historic buildings is leading to a generalized effort for
preservation. Most ancient buildings desperately need retrofit in order to mitigate the effects of material aging, of intensive use
and of the pathologies resultant from natural disasters. The systemization of seismic retrofitting is the expected course of action. In Portugal, the implementation of the Eurocodes represents the first step towards the regulation of seismic retrofit of ancient wood and masonry buildings and it is being accompanied by the recovery of traditional constructive techniques, In the first part of this paper, a structural characterization of ancient buildings is established by studying its material properties, its building systems and its failure mechanisms. Afterwards, the most common strengthening methodologies are reviewed, specifying its employability according to its purpose’s fulfilment. For a successful design of seismic strengthening, the proceeding ought to be based on experimental and numerical studies. Thus, this paper mainly focuses on the assessment of ancient buildings’ non linear behaviour. Therefore, in the second part of
this paper, two walls of a 19th Century building in the city of Catania are idealized into equivalent frames. The numerical models designed are submitted to a non linear Static Pushover Analysis and to a non linear Incremental Dynamic Analysis.
The main purpose is to contribute to the development and discloser of a numerical model to easily and efficiently perform
non linear static and dynamic analyses of ancient masonry buildings, on current software (SAP2000 ®). The strengthening
design ought to be based on this sort of analyses.
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This is the third volume of a handbook which covers the whole field of soil mechanics, discussing deterministic and stochastic theories and methods, and showing how they can be used in conjunction with one another. The first volume discusses soil physics, while the second deals with the determination of physical characteristics of the soil. Australian Mining wrote of the Handbook ``a valuable addition to the extensive literature on the topic and will be found to be more useful than most.''
The main objective of the third volume is to present solutions to the problems of engineering practice. It deals with the most important theoretical and practical problems of soil mechanics, discussing the following in detail: stability of earthworks, load-bearing capacity and settlement of shallow foundations, design of pile foundations, soil mechanics in road construction, improving the physical properties of soils, the characteristics of soil dynamics, foundations for machines and soil behaviour as affected by earthquakes. The book not only presents up-to-date deterministic methods, but also discusses solutions of probability theory in the fields of design and safety.
The book is divided into six chapters covering the stability of slopes, landslides, load-bearing capacity and settlement of shallow foundations and pile foundations, soil mechanics in road construction, and the improvement of the physical characteristics of soil with special emphasis on machine foundations and earthquakes, giving detailed treatment of each subject. For example, the first chapter deals not only with the stability of slopes, but also discusses the natural and artificial effects, slope protection, filter design, stresses in embankments, and the time factor. In this way, the book gives a clear and comprehensive picture of the special fields of soil mechanics and its subjects. It is therefore emminently suitable for postgraduate engineers, and engineers working in the fields of geotechnics, earthworks, foundations, road construction, engineering geology and statistics, and the design of structures.
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This uniquely exhaustive 2-volume compilation of problems encountered in the daily practice of soil mechanics and foundation engineering is a must for students and geotechnical engineers alike. It contains detailed solutions to more than 150 typical problems, clearly illustrated with numerous diagrams and drawings, and graded according to difficulty. All problems are real-life examples taken from the authors' own experience and covering the whole range of soil mechanics and foundation engineering sub-fields. For practising geotechnical and civil engineers, it is an invaluable guide and reference, while specialists in soil mechanics will find answers to problems which are rarely to be found in the technical literature.
Volume 1
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Maths for Geoscientists is an accessible, student-friendly introduction to the essential mathematics required by those students taking degree courses within the Geosciences. Clearly structured throughout, this book carefully guides the student step by step through the mathematics they will encounter and will provide numerous applied examples throughout to enhance students understanding and to place each technique into context.
Opening with a chapter explaining the need for studying mathematics within geosciences the book then moves on to cover algebra, equations, solutions, logarithms and exponentials, statistics and probability, trigonometry, vectors and calculus. The final chapter helps to bring it all together and provides the students with sample projects to test their knowledge. Worked applied examples are included in each chapter along with applied problem questions which are a mix of straightforward maths questions, word questions (developing maths to words), and more involved questions that involve the manipulation and interpretation of real and synthetic data.
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Author: H. H. Hardy, Richard A. Beier | Size: 35 MB | Format:PDF | Quality:Unspecified | Publisher: World Scientific Pub Co Inc | Year: 1994 | pages: 359 | ISBN: 9810220693, 9789810220693
Many natural objects have been found to be fractal and fractal mathematics has been used to generate many beautiful "nature" scenes. Fractal mathematics is used in image compression and for movies and is now becoming an engineering tool as well. This book describes the application of fractal mathematics to one engineering specialty - reservoir engineering.
This is the process of engineering the production of oil and gas. The reservoir engineer's job is to design and predict production from underground oil and gas reservoirs. The successful application of fractal mathematics to this engineering discipline should be of interest, not only to reservoir engineers, but to other engineers with their own potential applications as well. Geologists will find surprisingly good numerical descriptions of subsurface rock distributions. Physicists will be interested in the application of renormalization and percolation theory described in the book. Geophysicists will find the description of fluid flow scaling problems faced by the reservoir engineer similar to their problems of scaling the transport of acoustic signals
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Author: Dr. K. R. Arora | Size: 116 MB | Format:PDF | Quality:Scanner | Publisher: Standart Publisher | Year: 2004 | pages: 903
In Soil Mechanics and Foundation Engineering book, Dr. Arora clearly sets out the principles of soil behaviour and shows how engineers have applied these solutions in practice, making this an accessible, highly readable and yet comprehensive textbook for core courses in civil and ground engineering, and a handy resource book for practitioners.
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Design of Anchor Reinforcement in Concrete Pedestals According Appendix D of the ACI 318-05
Author: Widianto, Chandu Patel, and Jerry Owen | Size: 1.6 MB | Format:rar | Quality:Unspecified | Publisher: http://www.excelcalcs.com/ | Year: 21 Aug 2013 | pages: 3
ABSTRACT
Even though the Appendix D of the ACI 318-05 permits the use of supplementary
reinforcement to restrain concrete breakout, it does not provide specific guidelines in
designing such reinforcement. This paper presents a method for designing anchor
reinforcement in concrete pedestals, where un-reinforced concrete is insufficient to resist
anchor forces. Anchor reinforcement consists of longitudinal rebar and ties to carry
anchor tension forces and shear forces, respectively. The Strut-and-Tie Model is
proposed to analyze shear force transfer from anchors to pedestal and to design the
required amount of shear reinforcement. A proposed design procedure is illustrated in an
example problem
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Advance Concrete software for concrete design and detailing is built on the AutoCAD platform. Work with easy-to-use, comprehensive tools to help accelerate more accurate modeling and automate the creation of construction drawings and deliverables. Interoperability with Revit software supports a more connected Building Information Modeling (BIM) workflow.
Reinforcement modeling and detailing
Use a variety of tools to reinforce structural elements, including cast-in-place concrete, precast concrete, and special construction elements.
•Detail bars and meshes freely, directly on 2D drawings, as Advance Concrete creates and maintains a 3D model
•Select from a library of predefined bar shapes
•Assign parametric reinforcement attributes for each object (beams, columns, openings)
•Automate the placement of reinforcement bars and keep drawings up-to-date when models are modified
•Automatically optimize mesh and bent mesh reinforcements
•Create and visualize 3D reinforcement cages, and check clashes more easily
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