Behaviour of Piled Rafts with Piles of Different Lengths and Diameters under Vertical Loading
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Numerical Study of the Bearing Behavior of Piled Rafts
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Employment of the P-Multiplier in Pile-Group Analysis
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Employment of the P-Multiplier in Pile-Group Analysis
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3D finite elements analysis of vertically loaded composite piled raft
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Author: David A. Fanella & others | Size: 13 MB | Format:PDF | Quality:Unspecified | Publisher: Springer US | Year: 2nd Ed. 2012 Softcover reprint of the original 1st ed. 1992 | pages: 532 | ISBN: 1461597315 , 978-1461597315
Updating its highly successful predecessor, this new edition incorporates all of the American Institute of Steel Construction's 1989 specifications. Specific AISC section numbers are cited throughout for easy referencing. Sections on highway bridge design and fatigue design, as well as many new practical examples, are among the new features in the Second Edition. Current code provisions are supplemented by new practical examples and numerous AISC design aids are presented. New equiations are also referenced wherever appplicable. With no other books currently addressing the latest edition of the AISC code this guide will find an eager audience among structural engineers, architects, and other professionals.
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Posted by: RyanRS - 12-15-2013, 05:09 AM - Forum: Archive
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Does anybody have access to this thesis ?, it's will be very help if anyone can shared this thesis to me.
Thanks
Article/eBook Full Name: Thesis : Modeling of tall reinforced concrete wall buildings
Author(s): Salas, Marisol Carolina
Publish Date: 2008
Published By: UCLA
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Author: Andreas J. Kappos, TATJANA ISAKOVIĆ, | Size: 7.4 MB MB | Format:PDF | Quality:Original preprint | Publisher: Springer | Year: 2012 | pages: 221 | ISBN: 9789400739437
Fills a critical gap in the literature related to seismic assessment and design of bridges
Presents in a uniform and subjective way all important methods for inelastic analysis of bridges, some of which are adopted by modern codes like Eurocode 8
Includes detailed case-studies of bridge assessment, so far available in the specialised research-oriented literature only
Assists the engineer and/or researcher to select the method that best suits the individual bridge projects that he/she faces
The book focuses on the use of inelastic analysis methods for the seismic assessment and design of bridges, for which the work carried out so far, albeit interesting and useful, is nevertheless clearly less than that for buildings. Although some valuable literature on the subject is currently available, the most advanced inelastic analysis methods that emerged during the last decade are currently found only in the specialised research-oriented literature, such as technical journals and conference proceedings.
Hence the key objective of this book is two-fold, first to present all important methods belonging to the aforementioned category in a uniform and sufficient for their understanding and implementation length, and to provide also a critical perspective on them by including selected case-studies wherein more than one methods are applied to a specific bridge and by offering some critical comments on the limitations of the individual methods and on their relative efficiency.
The book should be a valuable tool for both researchers and practicing engineers dealing with seismic design and assessment of bridges, by both making the methods and the analytical tools available for their implementation, and by assisting them to select the method that best suits the individual bridge projects that each engineer and/or researcher faces.
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Author: Geoffrey E. Blight and Eng Choon Leong | Size: 32 MB | Format:PDF | Quality:Unspecified | Publisher: CRC Press | ISBN: 0415621208
Residual soils are found in many parts of the world and are used extensively as construction materials for roads, embankments and dams, and to support the foundations of buildings, bridges and load-bearing pavements. The characteristics and engineering properties of residual soils can differ significantly from those of the more familiar transported soils.
The fact that residual soils occur often in areas with tropical and sub-tropical climates and (extensively) in semi-arid climates, adds another dimension to their engineering performance, that of unsaturation.
Although there are many books that deal with the mechanics of soils, these are based mainly on the characteristics and behaviour of saturated transported soils. The first edition of this book was the first book to be written specifically about the mechanics of residual soils. The book was prepared by a panel of authors drawn from the Technical Committee on Tropical and Residual Soils of the International Society for Soil Mechanics and Foundation Engineering. It was written as a practical professional guide for geotechnical engineers working with residual soils.
The second edition has retained the valuable information contained in the first edition. The present editors and authors have extensively revised and augmented the content to bring it completely up to date, adding significantly to the sections on unsaturated soil mechanics and expanding the range and number of instructive case histories. Furthermore, sections on pedocretes, dispersive soils and karst have been added.
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Probabilistic evaluation of performance point in structures and investigation of the uncertainties
Author: F. Azhdary* and N. Shabakhty Department of Civil Engineering, University of Sistan and Baluchestan, Zahedan, Iran. | Size: 216 KB | Format:PDF | Quality:Unspecified | Publisher: Journal of Mechanical Engineering Research Vol. 3. (6), pp. 197-208, June 2011 | Year: 2011 | pages: 12
The main goal of the performance based design of structures is to rationally predict the structures’
performance during earthquakes which may occur during the lifetime of the structure. In this sort of
design, a specific displacement is defined as target displacement and the structure is subjected to a
force in order to reach this target displacement. This design process includes uncertainties in loading,
materials and analysis methods of the performance point. Therefore, statistical and probabilistic
analysis should be considered. In this paper, uncertainty sources for determining the performance
point are defined and then the procedures suggested in the codes are introduced. In the next step, an
appropriate probability distribution function is defined for uncertainty parameters and finally the
performance point of the structure is determined regarding these parameters in accordance with the
codes. In addition, the sensitivity of the performance point with respect to the mentioned parameters is
investigated. Results indicate that sensitivity of the performance point to geometric characteristics is of
great importance and other parameters such as dead and live load stand in the second level in terms of
sensitivity. An appropriate lateral loading pattern with the least uncertainty is also proposed for
buildings.
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CAPACITY SPECTRUM METHOD BASED ON INELASTIC DEMAND SPECTRA
Author: PETER FAJFAR* Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia | Size: 156 KB | Format:PDF | Quality:Unspecified | Publisher: EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS Earthquake Engng. Struct. Dyn. 28, 979}993 (1999) | Year: 1999 | pages: 15
By means of a graphical procedure, the capacity spectrum method compares the capacity of a structure with
the demands of earthquake ground motion on it. In the present version of the method, highly damped elastic
spectra have been used to determine seismic demand. A more straightforward approach for the determination
of seismic demand is based on the use of the inelastic strength and displacement spectra which can be
obtained directly by time-history analyses of inelastic SDOF systems, or indirectly from elastic spectra.
The advantages of the two approaches (i.e. the visual representation of the capacity spectrum method and
the superior physical basis of inelastic demand spectra) can be combined. In this paper, the idea of using
inelastic demand spectra within the capacity spectrum method has been elaborated and is presented in an
easy to use format. The approach represents the so-called N2 method formulated in the format of the
capacity spectrum method. By reversing the procedure, a direct displacement-based design can be performed.
The application of the modi"ed capacity spectrum method is illustrated by means of two examples.
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I would like to know what are the minimal legal requirements for getting a PhD degree, to become an associate professor and professor in the field of structural engineering? By requirements I mean are there any minimal number of published articles, how many of them must be in refereed journals, how many in journals with impact factor, how many books must have been published, in how many scientific projects somenone has to be participated, etc. It will be interesting for me to know what are these requirements in different countries.
It has been observed that most of the bridges damaged in earthquakes were constructed before 1971 and had little or no design consideration to seismic resistance. Since the 1971 San Fernando earthquake in California, the standards for earthquake design have been strengthened considerably, and bridge structural behavior has been more accurately evaluated. Since then, structural ductility, a crucial element for the survival of bridges under severe earthquakes has become a key consideration in structural analysis and design. However, bridges that were constructed prior to 1971 are still in use and play important roles in our transportation systems, which may be susceptible to failure due to their structural deficiencies. To ensure safety and performance of these bridges, a seismic retrofit and strengthening program has been one of the major efforts of the Washington Department of Transportation and the Federal Highway Administration, aiming at improving seismic performance of older bridges. Retrofitting methods such as restrainers and column jacketing have proven to be effective in recent earthquakes. Techniques to retrofit other bridge members have also been developed such as soil anchors, footing retrofit involving increased plan dimension and reinforced overlay, construction of link beams, and system isolation and damping device. The goal of seismic retrofit is to minimize the likelihood of structural failure while meeting certain performance requirements. This allows engineers to design repair strategies based on performance needs. As a consequence, some level of damage may be acceptable during a design-level earthquake. The California Department of Transportation (Caltrans) has required that bridge retrofits provide survival limit-state protection at seismic intensities appropriate for new bridges. This makes possible the proposition of efficient and effective strengthening measures with optimized retrofitting schemes, and the adoption of the plan that is the most economical for the acceptable damage level. One of the ways of implementation the retrofit program for the structures is providing a nonlinear static analysis.
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