Adapting earthquake actions in Eurocode 8 for performance-based seismic design
Author: Julian J. Bommer and Rui Pinho | Size: 124 KB | Format:PDF | Publisher: EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS | Year: 2005 | pages: 17
SUMMARY
Performance-based seismic design (PBSD) can be considered as the coupling of expected levels of ground motion with desired levels of structural performance, with the objective of achieving greater control over earthquake-induced losses. Eurocode 8 (EC8) already envisages two design levels of motion, for no collapse and damage limitation performance targets, anchored to recommended return periods of 475 and 95 years, respectively. For PBSD the earthquake actions need to be presented in ways that are appropriate to the estimation of inelastic displacements, since these provide an effective control on damage at different limit states. The adequacy of current earthquake actions in EC8 are reviewed from this perspective and areas requiring additional development are identifed. The implications of these representations of the seismic loads, in terms of mapping and zonation, are discussed. The current practice of deffining the loading levels on the basis of the pre-selected return periods is challenged, and ideas are discussed for calibrating the loading-performance levels for design on the basis of quantitative earthquake loss estimation. Copyright ? 2005 John Wiley & Sons, Ltd.
KEY WORDS: performance-based seismic design; earthquake actions; return periods; design levels; loss modelling; Eurocode 8
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Practical Design of Steel Structures presents practical design examples and calculations for a multi-bay, steel-framed industrial building under the actions of a variety of loads, including travelling crane loads, dead and imposed loads, and wind forces. For the first time, engineers and students alike can appreciate the complete design process through the analysis of the whole structure and the design of structural members. The calculations are clearly presented, employing a step-by-step approach stating the design philosophy, design considerations and clarifying the referred clauses of the code of practice.
However, before analysing the structure and the design of its structural elements, it is necessary to understand the theoretical background and how the structure behaves under the actions of various loads, based upon practical design and field experience. The author considers the structural arrangement with respect to selection and availability of construction material, the cost within the scheduled construction program and the overall budget. In addition he examines the buildability of the structure with regard to space restriction, method of construction and the geotechnical conditions of the site.
The essence of this book is the simplicity and clarity of approach in the complete analysis of the whole structure and the structural design of every member. Augmented by design sketches, this book will prove valuable to practising engineers in design offices and students on structures courses.
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New York City is a lot of things, but most of all it's a city of skyscrapers. From the cake-icing Gothic detailing of the Woolworth Building to the shimmering Art Deco of the Chrysler Building, tall buildings make Manhattan the ideal image of a city. Manhattan Skyscrapers was the first book to document the highs and highers of the Big Apple's search for the sky. With its authoritative text by New York Times contributor Eric Nash, newly commissioned photos by Norman McGrath, and archival images of the city, the book became the reference work on the skyline.
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Programs (Spreadsheet) for the design of elastomer bearings.
There are two programs: one for the design of laminated bearings and other for the design of plain pad bearing. In English version, program's units are: stresses in MPa; forces in kN and dimensions in mm. Programs consider horizontal loads and rotations in longitudinal direction of structure.
DESIGN HYPOTHESIS USED IN PROGRAMS:
Laminated elastomer bearings design programs consider Euro norm standard instructions. How the results of bearing deflections may present significant variations, rotation stability is verified additionally by UIC-Code instructions and also adopted by Brazilian Standard NBR 9062 - 1985. The design of plain pad bearings consider results of Brazilian experience, complemented by EN 1337. UIC-Code an CNR (Italian Standard).
Program consider resolution of only one load condition.
Program supposes only positive vertical dead loads, positive resultant vertical loads and positive horizontal loads and displacements.
Rotations are supposed exactly with signals as given by the engineering design results.
In case of sum of rotations with opposite signals with result near zero, it is recommended consider a variation about 1,1 in major modulus rotation and 0,9 in minor modulus rotation.
The tolerance for surface leveling is 0,003 rad for pre-fabricated (steel or concrete) structures and 0,010 for cast in place structures. When bearing installation error prevision is greater than allowable tolerance, we have to add residual permanent rotation. For example, if bearing installation precision prevision under a precasted bearing is 0,010 rad, we have to consider a residual permanent rotation, in the most unfavorable sense of 0,010 rad - 0,003 rad = 0,007 rad.
No install - Direct use
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Spatial Water Management introduces the reader to the new Dutch water management policy, which combines conventional water engineering with planned flood areas. Such a policy has large socio-economic implications and involves more stakes and stakeholders, implementing it leads to complex decision processes and requires a balance between local interests and regional or national stakes. Spatial Water Management addresses the constraints in water policy implementation and proposes a platform approach that strikes a balance between top-down regulation and bottom-up solutions. The book contributes to the understanding of how decision support tools can be used in the context of such a platform approach and presents a number of implementation management tools that can be used to weigh the various stakes, leading to an interactive, flexible and user-friendly mediation through which commitment and active participation of all involved parties can be reached. Such an approach can create a balance between local interests, regional stakes, and long-term national objectives. This book will be of interest to policy makers and researchers in water management. It will also be relevant for those studying and implementing spatial planning policy in complex environments.
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Please I need samples of Technical and Financial Proposals written by other consultants for road/bridge projects. I want to prepare a proposal for an upcoming road/bridge project. Thank you for your anticipated help.
Transportation Infrastructure Engineering: A Multimodal Integration, SI Version
Author: Lester A. Hoel, Nicholas J. Garber, Adel W. Sadek | Size: 11.7 MB | Format:PDF | Year: 2010 | pages: 688 | ISBN: 0495667897
Transportation Infrastructure Engineering: A Multimodal Integration, intended to serve as a resource for courses in transportation engineering, emphasizes transportation in an overall systems perspective. It can serve as a textbook for an introductory course or for upper-level undergraduate and first-year graduate courses. This book, unlike the widely used textbook, Traffic and Highway Engineering, serves a different purpose and is intended for a broader audience. Its objective is to provide an overview of transportation from a multi-modal viewpoint rather than emphasizing a particular mode in great detail. By placing emphasis on explaining the environment in which transportation operates, this book presents the "big picture" to assist students in understanding why transportation systems operate as they do and the role they play in a global society.
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DataScene 3.2.1.2 Professional (45 days trial and renew)
Size: 47.8 MB
DataScene is a data analysis, animation, and graphing software package developed with the latest generation of computational technologies. With its powerful and user-friendly interface, the user can easily manage and analyze data, generate and view high quality graphs, produce online and offline animations, monitor and chart real-time data, and print and export graphs and charts.
Plotting 39 types of series with ultra-high graph quality.
3D canvas for most graph types.
Supporting a wide variety of highly customizable graphical elements, such as transparent color, solid brush, gradient brush, image brush, hatch brush with 56 textures, shadow, visual aspect settings, etc.
Highly customizable and feature-rich graph axes, legend, marks, titles, and walls.
Rich text graph annotations with a What You See Is What You Get (WYSIWYG) editor.
Supporting 16 built-in graph themes and custom theme.
Analyze and processing data using column amd cell formulas.
Processing graphs with 20 series functions, such as Cublic Spline, Moving Average, Integrate, Differentiate, FFT, Nonlinear Regression/Curve Fitting, etc.
Powerful math parser that supports 57 built-in mathematical and text functions - which include special functions like Bessel, Beta, Gamma, Error, Hypergeometric, etc.
Creating graph animation using time-dependent mathematical formulas.
Creating graph animation using sequences of data.
Monitoring, charting, and processing real-time data.
Import data from Microsoft® Excel, all kinds of text files (delimited with any delimiter, CSV, and with fixed-width columns).
Exporting to a variety of graph formats: BMP, JPG, TIFF, PNG, GIF, EMF, PostScript, and PDF.
Exporting animated graphs and charts to AVI and animated GIF for offline playback.
Super clean, friendly, context-sensitive, and configurable user interface.
A rich set of graphical and data tools.
Automatic graph update and result recalculation upon data source change.
Read my included readme.txt for learning how to renew the 45 days trial.
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IMPORTANT NOTICE: You may use this software for evaluation purposes only.
If you like it, it is strongly suggested you buy it to support the developers.
By any means you may not use this software to make money or use it for commercial purpose.
CurveExpert Professional v1.2.3 (30 days trial and renew)
Size: 22 MB
CurveExpert Professional is a cross-platform solution for curve fitting and data analysis. Data can be modelled using a toolbox of linear regression models, nonlinear regression models, smoothing methods, or various kinds of splines.
Over 60 models are built-in, but custom regression models may also be defined by the user. Full-featured publication-quality graphing capability allows thorough examination of the curve fit. The process of finding the best fit can be automated by letting CurveExpert compare your data to each model to choose the best curve. The software is designed with the purpose of generating high quality results and output while saving your time in the process.
If you want to try CurveExpert Professional, you can start a trial period by selecting Help->Activate Trial Period; note that an internet connection is required for the starting of the trial period, but is not required once the trial period has been activated.
This trial period is active for approximately 30 days from activation date. During this period, all features of CurveExpert Professional are accessible. When the software is out of its trial period (either before or after), most output functions are disabled, and a watermark appears on all graphs.
Read the readme.txt inside for activating the trial and for renewing it.
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IMPORTANT NOTICE: You may use this software for evaluation purposes only.
If you like it, it is strongly suggested you buy it to support the developers.
By any means you may not use this software to make money or use it for commercial purpose.
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