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Author : H. G. Russell
Publisher : Transportation Research Board
Page : 86 pages
File Size : 44,8 Mb
Release : 2009
Category : Box beams
ISBN : 9780309098304
At head of title: National Cooperative Highway Research Program.
Author : Jyotirmay Lall
Publisher : Unknown
Page : 42 pages
File Size : 49,6 Mb
Release : 1997
Category : Box girder bridges
ISBN : NWU:35556025393562
Bridge decks supported by adjacent precast/prestressed-concrete beams have become increasingly popular in recent years due to their ease of construction, shallow superstructure, and aesthetic appeal. In New York, such structures are built by placing a number of precast beams alongside one another and connecting them through grouted keyways called "shear keys". After the grout hardens, the beams are transversely post-tensioned and a composite, cast-in-place deck is poured over them. Before 1992, field inspection personnel frequently reported the appearance of longitudinal deck cracking over these partial-depth shear keys soon after construction. In response, a new system using full-depth shear keys with more transverse tendons was adopted in 1992. Since then, more than 100 such bridges have been built statewide. To evaluate their performance, a followup inspection survey was conducted in 1996 on 91 such bridges.
Author : Paulo J. da Sousa Cruz,Dan M. Frangopol,Luis C. Canhoto Neves
Publisher : CRC Press
Page : 1126 pages
File Size : 48,5 Mb
Release : 2015-03-02
Category : Technology & Engineering
ISBN : 9781498737005
Advances in bridge maintenance, safety, management and life-cycle performance contains the papers presented at IABMAS'06, the Third International Conference of the International Association for Bridge Maintenance and Safety (IABMAS), held in Porto, Portugal from 16 to 19 July, 2006.All major aspects of bridge maintenance, management, safety, and co
Author : Scott Walbridge,Mazdak Nik-Bakht,Kelvin Tsun Wai Ng,Manas Shome,M. Shahria Alam,Ashraf el Damatty,Gordon Lovegrove
Publisher : Springer Nature
Page : 705 pages
File Size : 50,7 Mb
Release : 2022-05-31
Category : Technology & Engineering
ISBN : 9789811905032
This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2021. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.
Author : Richard A. Miller (Professional engineer),George Michael Hlavacs,Todd W. Long
Publisher : Unknown
Page : 110 pages
File Size : 46,7 Mb
Release : 1998
Category : Box beams
ISBN : NWU:35556028289940
Adjacent box girder bridges use grouted shear keys to transfer load between beams. These shear keys tend to crack and leak. A full-scale portion of an adjacent box girder bridge was used to test the performance of grouted shear keys under environmental and cyclic loads. Strain gages were placed in the girders and in the shear keys. Displacement gages were placed spanning the shear keys on the top and bottom flanges of the girders. The bridge was subjected to simulated cyclic truck loading as well as environmentally induced thermal loading. The pulse velocity method was employed to find cracks in shear keys. Dye penetration was used to confirm the pulse velocity measurements. The total research project consisted of: (a) testing of the current keyway detail using the currently specified nonshrink grout, (b) testing of the current keyway detail but substituting epoxy grout for the nonshrink grout, and (c) testing of a modified keyway detail using nonshrink grout in which the keyway is moved to the neutral axis of the girder. In the first test, the shear keys were grouted in late autumn and cracked soon after casting, before any simulated vehicle loading had been applied.
Author : FIB – International Federation for Structural Concrete
Publisher : FIB - Féd. Int. du Béton
Page : 746 pages
File Size : 44,8 Mb
Release : 2013-04-01
Category : Technology & Engineering
ISBN : 9789659203901
Author : Khaled Mahmoud
Publisher : CRC Press
Page : 338 pages
File Size : 52,9 Mb
Release : 2011-08-26
Category : Science
ISBN : 9780415684156
Due to significant economic growth in the last few decades, increasing traffic loads impose tremendous demand on bridge structures. This, coupled with ongoing deterioration of bridges, introduces a unique challenge to bridge engineers in maintaining service of these infrastructure assets without disruption to vital economic and social activities. This requires innovative solutions and optimized methodologies to achieve safe and efficient operation of bridge structures. Bridge engineering practitioners, researchers, owners, and contractors from all over the world presented on modern techniques in design, inspection, monitoring and rehabilitation of bridge structures, at the Sixth New York City Bridge Conference held New York City on July 25-26, 2011. This book contains a select number of papers presented at the conference. This group of papers provides a state-of-the-art in bridge engineering and is of interest to any reader in the field.
Author : Hiroshi Yokota,Dan M. Frangopol
Publisher : CRC Press
Page : 926 pages
File Size : 50,6 Mb
Release : 2021-04-20
Category : Technology & Engineering
ISBN : 9781000173758
Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations contains lectures and papers presented at the Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020), held in Sapporo, Hokkaido, Japan, April 11–15, 2021. This volume consists of a book of extended abstracts and a USB card containing the full papers of 571 contributions presented at IABMAS 2020, including the T.Y. Lin Lecture, 9 Keynote Lectures, and 561 technical papers from 40 countries. The contributions presented at IABMAS 2020 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of maintenance, safety, management, life-cycle sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle sustainability, standardization, analytical models, bridge management systems, service life prediction, maintenance and management strategies, structural health monitoring, non-destructive testing and field testing, safety, resilience, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, and application of information and computer technology and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on maintenance, safety, management, life-cycle sustainability and technological innovations of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including engineers, researchers, academics and students from all areas of bridge engineering.
Author : Anonim
Publisher : Unknown
Page : 34 pages
File Size : 55,5 Mb
Release : 1997
Category : Highway research
ISBN : NYPL:33433078227695
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 53,8 Mb
Release : 2007
Category : Precast concrete
ISBN : UCSD:31822036051118
Author : Paulo J. S. Cruz,Dan M. Frangopol,Luis C. Neves
Publisher : Taylor & Francis Group
Page : 1138 pages
File Size : 44,8 Mb
Release : 2006
Category : Technology & Engineering
ISBN : PSU:000059122203
With contributions from leading experts, this book addresses all major aspects of bridge maintenance, safety, and management and delineates the state of the art in bridge maintenance and safety. It offers advice for decision making in bridge maintenance, safety, management, and cost for the purpose of enhancing the welfare of society. Topics include deterioration modeling, emerging technologies, field testing, financial planning, health monitoring, high-performance materials, innovations, load capacity assessment, maintenance strategies, new technology and materials, nondestructive testing, future traffic demands, reliability and risk, sustainable materials, whole-life costing, and more.
Author : Insert Name Here
Publisher : kassel university press GmbH
Page : 1059 pages
File Size : 44,9 Mb
Release : 2012-01-01
Category : Concrete
ISBN : 9783862192649
Author : Anonim
Publisher : Unknown
Page : 392 pages
File Size : 48,8 Mb
Release : 1997
Category : Government publications
ISBN : COLUMBIA:CU14531208
Author : Thomas Heinzeller,James H. Nebelsick
Publisher : CRC Press
Page : 1576 pages
File Size : 44,7 Mb
Release : 2005-12-08
Category : Science
ISBN : 0415390370
Since 1972, scientists from all over the world working on fundamental questions of echinoderm biology and palaeontology have conferred every three years to exchange current views and results. The 11th International Echinoderm Conference held at the University of Munich, Germany, from 6-10 October 2003,continued this tradition. This volume comprises 95 submitted papers and 96 abstracts covering a wide spectrum from innovative student contributions to the lessons learnt from experienced specialists. The content of the contributions ranges from original research results to the latest synopses concerning a variety of topics, including visual sensing, larval cloning, mutable collagenous tissues, sea urchin aqua-culture, deuterostome phylogeny, palaeobiology and taphonomy.
Author : Anonim
Publisher : Unknown
Page : 206 pages
File Size : 41,7 Mb
Release : 1967
Category : Box beams
ISBN : PSU:000014399473
