Foreword
Cable-stayed bridges have become the form of choice over the past several decades for bridges in the medium- to long-span range. In some cases, serviceability problems involving large amplitude vibrations of stay cables under certain wind and rain conditions have been observed. This study was conducted to develop a set of consistent design guidelines for mitigation of excessive cable vibrations on cable-stayed bridges. The project team started with a thorough review of existing literature; this review indicated that while the rain/wind problem is known in sufficient detail, galloping of dry inclined cables was
the most critical wind-induced vibration mechanism in need of further experimental research. A series of wind tunnel tests was performed to study this mechanism. Analytical and experimental research was performed to study mitigation methods, covering a range of linear and nonlinear dampers and crossties. The study also included brief studies on live load-induced vibrations and establishing driver/pedestrian comfort criteria. Based on the above, design guidelines for the mitigation of wind-induced vibrations of stay cables were developed. As a precautionary note, the state of the art in stay cable vibration mitigation is not an exact science. These new guidelines are only intended for use by professionals with experience in cable-stayed bridge design, analysis, and wind engineering, and should only be applied with engineering judgment and due consideration of special conditions surrounding each project.
Gary L. Henderson
Office of Infrastructure Research and Development
Notice
This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document. This report does not constitute a standard, specification, or regulation.
The U.S. Government does not endorse products or manufacturers. Trademarks or
manufacturers' names appear in this report only because they are considered essential to the objective of the document.
Quality Assurance Statement
The Federal Highway Administration (FHWA) provides high-quality information to serve
Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.
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Computer Aided Design of Cable Membrane Structures
by Topping & Ivanyi
Computer Aided Design of Cable Membrane Structures (Saxe-Coburg Publications on Computational Engineering)
By B. H. V. Topping, P. Ivanyi
Publisher: Saxe-Coburg Publications
Number Of Pages: 250
Publication Date: 2008-01-01
ISBN-10 / ASIN: 1874672113
ISBN-13 / EAN: 9781874672111
Product Description:
This handbook concentrates on the computational aspects of analysis and design of cable membrane structures using the dynamic relaxation method with a finite element idealization.
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Posted by: yly8 - 10-18-2010, 11:44 AM - Forum: Archive
- No Replies
Does anyone have this study?
Hsiang, W. B., "Reversed Cyclic Lateral Loading Resistance of a FLat Plate Interior Frame" ,MSc thesis, Department of Civil Engineering, Univeristy of Washington, Seattle, Mar.1981, 243 pp
Best regards
HYDRAULIC STRUCTURES:
A CHALLENGE TO ENGINEERS AND RESEARCHERS
AUTHORS: Jorge MATOS and Hubert CHANSON
Published by the Division of Civil Engineering at the University of Queensland
Pages: 221
ISBN No. 1864998687
Year: 2006
FOREWORD by Jorge Matos and Hubert Chanson:
Following the idea and concept of the European Junior Scientist Workshops of the IWA/IAHR Joint Committee on Urban Drainage, the IAHR Hydraulic Structures Section, jointly with the Instituto Superior Técnico (IST) and the Portuguese Water Resources Association (APRH), organised the International Junior Researcher and Engineer Workshop on Hydraulic Structures (IJREWHS'06). The International Junior Researcher and Engineer Workshop on Hydraulic Structures (IJREWHS'06) was held at Hotel da Ameira, Montemor-o-Novo, on 2-4 September 2006. A half-day technical tour included the visit to some relevant hydraulic schemes in Alentejo region, namely the Alqueva and Pedrógão dams on the Guadiana River (Photographs No. 1 and 2). The IJREWHS'06 workshop addressed conventional and innovative aspects of hydraulic structures design, operation, rehabilitation, and interaction with the environment. The main themes of the workshop embraced the hydraulics of dams and hydropower schemes, river structures, hydraulic structures in urban drainage and sewer systems, as well as coastal protection systems.
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Product Details: 100 Of the World's Tallest Buildings
Hardcover: 220 pages| PDF | 159 mb
Publisher: Images Publishing | edition 1998
Ivan Zaknic (Author), Council on Tall Buildings and Urban Habitat (Corporate Author), Matthew Smith (Editor), Dolores Rice (Editor)
ISBN: 187549832X
Language: English
Product Description
Majestic, awe-inspiring and unique -- these are the words that best describe the 100 fabulously tall buildings selected for this superb new book.
They embody almost seven decades of engineering and architectural excellence, and each one is a landmark signature on the skyline of its city. From the 1930s splendor of New York City's Chrysler and Empire State Building to the dizzying heights of Kuala Lumpur's Petronas Towers (the world's tallest), each is a lasting monument to the ingenuity and courage of its builders. This spectacular book includes a table that ranks the buildings by height, a summary and glossary of terms.
Presents a spectacular selection of the tallest and most fascinating skyscrapers that have been constructed around the globe. Many photos and drawings.
missing pages: 119-121, 205, 223
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As one of the candidate of Master degree, I have studied one subject called Advanced Rock Mechanic. In this subject, I found some difficulties with the scale of rock crack. I want to know how many scale there are, and also their application. So could you please suggest me some documents and informations related to this one?
Geological Data Management (Geological Society Special Publication)
John R. Giles (Editor)
Hardcover: 192 pages
Publisher: Geological Society Publishing House (September 1995)
Language: English
ISBN-10: 189779939X
ISBN-13: 978-1897799390
Product Dimensions: 9.8 x 6.9 x 0.8 inches
30,4Mb
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Posted by: ir_71 - 10-18-2010, 04:41 AM - Forum: Archive
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ISO 15901-1:2005 Pore size distribution and porosity of solid materials by mercury porosimetry
ISO 15901-1:2005 describes a method for the evaluation of the pore size distribution and the specific surface in pores of solids by mercury porosimetry according to the method of Ritter and Drake. ISO 15901-1:2005 describes a comparative test, usually destructive due to mercury contamination, in which the volume of mercury penetrating a pore or void is determined as a function of an applied hydrostatic pressure, which can be related to a pore diameter.
Practical considerations presently limit the maximum applied absolute pressure to about 400 MPa (60 000 psia) corresponding to a minimum equivalent pore diameter of approximately 0,003 m. The maximum diameter is limited for samples having a significant depth due to the difference in hydrostatic head of mercury from the top to the bottom of the sample. For the most purposes, this limit can be regarded as 400 m. ISO 15901-1:2005 applies to inter-particle and intra-particle porosity but cannot distinguish between these porosities where they co-exist.
ISO 15901-1:2005 is suitable for the study of most non-wettable, by mercury, porous materials. Samples that amalgamate with mercury, such as certain metals, e.g. gold, aluminium, reduced copper, reduced nickel and silver, can be unsuitable for this technique or can require a preliminary passivation.
FORMAT: 36 pages, A4
ISBN: 978 0 580 55281 6
Dear friends and colleagues,
It is clear the standard mentioned above is quite specific, but if some of you has it, please share it.
Thanks in advance!
IR
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