Windstorms cause enormous loss to life and property worldwide. Insurance companies use risk assessment models to assess the financial risk to their insurance exposure due to
windstorms. The estimation of the intensity of hazard and the vulnerability of buildings to windstorms are important parts of a windstorm risk assessment model. The vulnerability
functions (or curves) are, in general, based on analyses of loss data from insurance companies. The loss data available from insurance companies following a natural disaster is generally
comprised of losses representative of a wide variety of buildings, often lacking information on building-specific characteristics such as height and material. Analysis of such data may not go beyond the development of an aggregate (or generic) vulnerability curve for a combined portfolio giving no idea of the vulnerability of individual building types represented by this curve. The paper discusses the vulnerability of buildings to windstorms and the development
of vulnerability functions for windstorm loss estimation. A methodology is presented for the disaggregation of a generic vulnerability curve into several curves representing individual building types. The methodology provides a convenient way of translating known vulnerabilities for a region to those for another region by combining them with actuarial data and building inventory information of the region. The methodology is applied for the disaggregation of generic vulnerability curves for the Caribbean Island of Puerto Rico. The hurricane hazards and the consequent property losses in the region are also discussed.
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Vulnerability evaluation and seismic rehabilitation of steel building with semi-rigid connections (Case study - tehran)
Author: H. Shakib ; S.Dardaei2; M.Pirizadeh ; A.Moghaddasi | Size: 374 KB | Format:PDF | Quality:Unspecified | Publisher: The 14 th World Conference on Earthquake Engineering October 12-17, 2008, Beijing, China | Year: 2008 | pages: 10
In this paper, the seismic rehabilitation of a steel building with semi-rigid connections in Tehran is presented. This
building with 19 stories in three blocks and an asymmetric plan has been constructed 30 years ago. First step of the
rehabilitation study includes qualitative vulnerability evaluation which indicates that the building has heavy seismic
vulnerability potential. In the second step, quantitative vulnerability of the structure according to FEMA 356
guideline is evaluated. The results showed that the building is resistant enough against gravity loads but not safe
enough for seismic loads. Finally, two seismic retrofitting plans consisting of concrete shear walls and steel shear
walls are proposed. Comparison of retrofitting plans of the building from seismic performance, architectural and
implementation aspects showed that the concrete shear walls plan is the superior choice.
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Seismic Vulnerability Assessment of Modular Steel Buildings
Author: C. D. ANNAN, M. A. YOUSSEF, and M. H. EL NAGGAR | Size: 1.3 MB | Format:PDF | Quality:Unspecified | Publisher: Journal of Earthquake Engineering, 13:1065–1088, 2009 Copyright A.S. Elnashai & N.N. Ambraseys ISSN: 1363-2469 print / 1559-808X online | Year: 2009 | pages: 25
Contemporary seismic design is based on dissipating earthquake energy through significant inelastic deformations. This study aims at developing an understanding of the inelastic behavior of braced frames of modular steel buildings (MSBs) and assessing their seismic demands and capacities. Incremental dynamic analysis is performed on typical MSB frames. The analysis accounts for their unique detailing requirements. Maximum inter-story drift and peak global roof drift were adopted as critical response parameters. The study revealed significant global seismic capacity and a satisfactory performance at design intensity levels. High concentration of inelasticity due to limited redistribution of internal forces was observed.
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This document specifies the requirements for the materials, design, fabrication, erection, testing and inspection of site built, vertical, cylindrical, flat bottomed, above ground, welded steel tanks for storage of liquids at ambient temperature and above.
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Dr. Powell, Professor Emeritus at the University of California - Berkeley, presents in this new book a common-sense approach for the modern world, where structural analysis is typically done by computer, and where modeling (setting up a useful analysis model) and interpretation (using analysis results to make design decisions) can be more important than analysis theory and computational methods. The book emphasizes behavior, and how this behavior can be modeled for analysis. It shows that structural analysis is at best approximate, and explains how "capacity design" can be used to improve performance.
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The construction of the Chicago Spire was put on hold after the completion of the substructure due to financial issue of the developer but the latest news is that it seems some company wants to save the project and continue its construction this year.
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This release is the first Bentley branded and licensed version of the former FormSys product Multiframe.
Fast and accurate structural analysis is the foundation of all computer aided structural design. Multiframe helps you get the results you need by providing powerful, yet easy to use analysis and design capabilities. Multiframe's analysis and design tools give you an exceptionally powerful and flexible means of creating, analyzing and examining results for your structures. Multiframe Automation using VBA is a feature unique among structural analysis programs. Using Automation, you can prepare calculations and drawings in Excel, Word or AutoCAD and dynamically access any and all of the design data you need directly from the Multiframe model. In Word, you can prepare a design template document and have it filled out automatically by data from Multiframe. In AutoCAD, you can automatically generate a drawing from a Multiframe model, or alternatively, generate a Multiframe model dynamically, directly from an AutoCAD drawing.
Multiframe is available in two versions to provide solutions matched to the varied tasks that you perform: Multiframe - 3D structural analysis and design; Multiframe Advanced - 3D structural dynamic analysis and design.
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Dear Admin. & Forum Staff and friends
about the forum ( Journals,papers and presentations ) my suggestion is to Re- arrange or divide this forum due to the similar subjects and titles
in this forum you can recognize a lot of posts under a similar titles or subjects while the post include (20 - 30) pages
thanks in advance
best regards
Freeway Geometric Design for Active Traffic Management in Europe
Author: U.S. Department of Transportation | Size: 4 MB | Format:PDF | Quality:Unspecified | Publisher: CreateSpace Independent Publishing Platform | Year: 2014 | pages: 90 | ISBN: 1480263869, 9781480263864
Continued growth in travel on congested urban freeway corridors exceeds the ability of agencies to provide sufficient solutions and alternatives based on traditional roadway expansion and improvement projects. Several countries are implementing managed motorway concepts to improve motorway capacity without acquiring more land and building large-scale infrastructure projects. The Federal Highway Administration, American Association of State Highway and Transportation Officials, and National Cooperative Highway Research Program sponsored a scanning study of England, Germany, the Netherlands, and Spain to examine the use of innovative geometric design practices and techniques to improve the operational performance of congested freeway facilities without compromising safety. Managed motorways are a combination of active or dynamically managed operational regimes, specific designs of infrastructure, and technology solutions. The concept uses a range of traffic management measures to actively monitor the motorway and dynamically control speeds, add capacity, and inform road users of conditions on the network with the objective to optimize traffic and safety performance. Examples include shoulder running, variable mandatory speed limits, lane control signals, and driver information using variable message signs. Managed motorways increase journey reliability and throughput of a motorway by speed management and increase capacity by shoulder running.
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