Development of seismic fragility surfaces for reinforced concrete buildings by means of nonlinear time-history analysis
Author: D. M. Seyedi, P. Gehl, J. Douglas, L. Davenne, N. Mezher and S. Ghavamian | Size: 494 KB | Format:PDF | Publisher: EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS | Year: 2009 | pages: 18
EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS
Earthquake Engng Struct. Dyn. 2010; 39:91–108
Published online 3 August 2009 in Wiley InterScience. DOI: 10.1002/eqe.939
SUMMARY
Fragility curves are generally developed using a single parameter to relate the level of shaking to the
expected structural damage. The main goal of this work is to use several parameters to characterize the
earthquake ground motion. The fragility curves will, therefore, become surfaces when the ground motion
is represented by two parameters. To this end, the roles of various strong-motion parameters on the induced
damage in the structure are compared through nonlinear time-history numerical calculations. A robust
structural model that can be used to perform numerous nonlinear dynamic calculations, with an acceptable
cost, is adopted. The developed model is based on the use of structural elements with concentrated
nonlinear damage mechanics and plasticity-type behavior. The relations between numerous ground-motion
parameters, characterizing different aspects of the shaking, and the computed damage are analyzed and
discussed. Natural and synthetic accelerograms were chosen/computed based on a consideration of the
magnitude-distance ranges of design earthquakes. A complete methodology for building fragility surfaces
based on the damage calculation through nonlinear numerical analysis of multi-degree-of-freedom systems
is proposed. The fragility surfaces are built to represent the probability that a given damage level is reached
(or exceeded) for any given level of ground motion characterized by the two chosen parameters. The
results show that an increase from one to two ground-motion parameters leads to a significant reduction
in the scatter in the fragility analysis and allows the uncertainties related to the effect of the second
ground-motion parameter to be accounted for within risk assessments.
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Posted by: parwez007 - 07-13-2011, 09:17 AM - Forum: Archive
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Dear CivilEA members
I am looking for papers regarding construction and demolition waste management strategies in view for policy-making in my own country, Mauritius. Does anyone have any info about the above mentioned subject as this will help me in my dissertation.
RECOMMENDED GUIDELINES FOR LIQUEFACTION EVALUATIONS
USING GROUND MOTIONS FROM
PROBABILISTIC SEISMIC HAZARD ANALYSES
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1) Maintain grants to work and resources for users of the Planview system.
2) Maintain work and resource calendars.
3) Maintain Planview Business Model Structures.
4) Maintain Investment models and configurations.
5) Create and maintain project models and workflows.
6) Periodically check for inconsistencies in the database.
7) Provide a central point of contact for technical/application assistance for both organizational staff and Planview Product Support
If you could share this paper with us, I will be really appreciated.
Title:The numerical solution of steady water wave problems
Author:J.D. Fenton
Journal:Computers & Geosciences
Volume 14, Issue 3, 1988, Pages 357-368
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Could anyone upload this paper. Seems to me that my university lost subscription to this journal.
Three-dimensional finite element analysis of the direct simple shear test
James Doherty and Martin Faheya
Computers and Geotechnics
Article in Press, Corrected Proof - Note to users
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doi:10.1016/j.compgeo.2011.05.005
Hi,
I am studying in Masters and taken the subject Advance Reinf. Concrete.
I have to prepare a Research based Report (Seminar) on RCC.
But i can't select the topic, I want to do my seminar on the Behaviour of RCC but I have no idea which Area to select.
Can anyone HELP me out on it??
I am not intending to take the Behaviour of Concrete in Fire conditions, as most of the students love to do work on this...
You can suggest me any topic with some references if you like..
Have a nice day...
The guide begins with chapters 1 to 3 that deal with the generalities and basics for dimensioning and verification of projects. It continues with discussions on concrete: shrinkage and creep in chapter 4 and prestress in chapter 5.
The justifications to be carried out at the ultimate limit states are then dealt with in chapter 6 where detail will be found on classic subjects such as verifications on bending, shear stress, torsional stress, crushing stress and fatigue stress. They are followed by a new subject: verification of brittle failure.
The justifications to be carried out on the service limit states are dealt with in chapter 7, where there are new developments concerning control of cracking.
Constructive provisions are the subjects of chapters 8 and 9, the first relating to reinforcement and the second to structural elements.
The last chapter, 10, brings together specific justification methods: verification relative to shear in special cases, the use of connecting rods and tie rods for zones of discontinuity, study of the prestress diffusion, ‘sandwich method’ for plate design and particularly the bending-shear combination. Foundations, treated in a very partial manner by Eurocode 2, should provide useful references for designers.
The guide finally ends with numerous and varied appendices. In effect, it likes to think it’s complete without having been able to deal with everything, and to avoid burdening the reader with an excessive amount of information; much non-essential information and detailed developments of examples of application are to be found in the appendices.
The guide’s first objective is a detailed description of the instructions that are new relative to previous practices. At this point of implementation of the Eurocodes, this development aims particularly to facilitate their understanding and their use. The numerous pages of the guide given over to them are there to give the maximum of explanation. It is however true that for certain instructions it is still too early to be able to well define their field of use, to estimate their importance and to evaluate the results of their application.
A second objective is trying to make the designer feel at home in this new voluminous entity full of multiple and diverse rules. Hence the reason for all this extra information, not only in Eurocode 2 itself, but also when it is necessary and thus useful to other Eurocodes.
And finally, the austere nature of such a work is inevitable. It is also accentuated by the very large number and diversity of the subjects treated. Further, a particular effort has been made to aim for simplicity and in the reasoning, or the logic in the linking of subjects, with the aim of providing a relative ease of reading. The guide will have succeeded in its aims if the designers quickly find it easy to use and practical, and if they refer to it often. This should not, however, excuse them from referring to Eurocode 2.
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DESIGN FIRST Design-based planning for communities
Author: David Walters and Linda Luise Brown | Size: 7.6 MB | Format:PDF | Publisher: Architectural Press | Year: 2004 | pages: 304 | ISBN: 0750659343
Well-grounded in the history and theory of Anglo-American urbanism, this illustrated textbook sets out objectives, policies and design principles for planning new communities and redeveloping existing urban neighborhoods. Drawing from their extensive experience, the authors explain how better plans (and consequently better places) can be created by applying the three-dimensional principles of urban design and physical place-making to planning problems.
Design First uses case studies from the authors' own professional projects to demonstrate how theory can be turned into effective practice, using concepts of traditional urban form to resolve contemporary planning and design issues in American communities.
The book is aimed at architects, planners, developers, planning commissioners, elected officials and citizens -- and, importantly, students of architecture and planning -- with the objective of reintegrating three-dimensional design firmly back into planning practice.
- Focus and emphasis on planning by 3-D design
- Clear and practical presentation of how communities can improve their town planning processes
- Case studies illustrate the practice and implementation of ideas
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Stability and Safety of Ships - Risk of Capsizing (2nd Edition)
Author: Belenky, Vadim; Sevastianov, Nikita B. | Size: 5.25 MB | Format:PDF | Publisher: Society of Naval Architects and Marine Engineers (SNAME) | Year: 2007, Knovel Release Date Apr 19, 2010 | pages: 459 | ISBN: 978-0-939773-61-9
This book deals with the many modern approaches to analyze ship dynamic stability and capsizing. The emphasis is on probabilistic assessment of ship dynamic stability. However, in order to evaluate ship dynamic stability and capsizing one must first formulate the nonlinear ship dynamics problem. This book will do much to raise the level of understanding of ship dynamic stability research to that of hydrodynamics and structures, and paves the way to consideration of ship stability safety as one aspect of the up-and-coming discipline of nonlinear dynamics of ships.
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