Development Of Post To Deck Connections For Use In A Mash Tl 4 Steel Tube Bridge Rail

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Development of Post-to-deck Connections for Use in a MASH TL-4 Steel-tube Bridge Rail

Author : Pascual Mauricio
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Development of Post-to-deck Connections for Use in a MASH TL-4 Steel-tube Bridge Rail by : Pascual Mauricio

Download or read book Development of Post-to-deck Connections for Use in a MASH TL-4 Steel-tube Bridge Rail written by Pascual Mauricio and published by . This book was released on 2019 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware (MASH) Test Level 4 steel-tube bridge rail to the side of the bridge deck to limit impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge rail system to be compatible for use on all deck configurations, the Illinois and Ohio Departments of Transportation desired the new system to attach to bridge decks comprised of concrete slabs or precasted prestressed, concrete box-beam girders. A new post-to-deck connection for a new MASH 2016 TL-4 steel-tube bridge rail was developed and tested. The connection featured a W6x15 steel post to be side-mounted to the deck. The post-to-deck connection was designed to fully develop the plastic bending capacity of the W6x15 post without causing deck damage. Post anchorage hardware was also designed to sustain impact loads transferred to the deck while preventing deck damage. Four post-to-deck connection concepts were developed and optimized through dynamic component testing. Only lateral impacts were conducted on the design concepts, side-mounted to a concrete box-beam girder. For the dynamic component testing, post-to-deck connection concepts varied on the type of welded post assembly connecting to longitudinal tube spacers, which in turn mounted to various post anchorages casted within the concrete box-beam girder. The resulting damage from each test varied from plastic deformation of the post between two plate attachments on the post assembly or post bending above one singular plate attachment due to the development of a plastic hinge near the surface of the deck. The post-to-deck connection featuring a singular plate attachment with longitudinal tube spacers was recommended for use based on the post bending near the surface of the deck, as intended.

Development of a Post-to-deck Connection for a TL-4 Steel-tube Bridge Rail

Author : Pascual Mauricio
Publisher :
ISBN 13 :
Total Pages : 233 pages
Book Rating : 4.:/5 (123 download)

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Book Synopsis Development of a Post-to-deck Connection for a TL-4 Steel-tube Bridge Rail by : Pascual Mauricio

Download or read book Development of a Post-to-deck Connection for a TL-4 Steel-tube Bridge Rail written by Pascual Mauricio and published by . This book was released on 2020 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware, Second Edition (MASH 2016) Test Level 4 (TL-4) steel-tube bridge rail to the side of the bridge deck to limit the impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge rail system to be compatible for use on all deck configurations, the Illinois and Ohio Departments of Transportation desired the new system to attach to bridge decks comprised of concrete slabs or precast prestressed, concrete box-beam girders. A new post-to-deck connection for a new MASH 2016 TL-4 steel-tube bridge rail was developed and tested. The connection featured a W6x15 steel post to be side-mounted to bridge decks. A post-to-deck connection concept was developed and optimized through dynamic component testing. Lateral impacts were conducted on the design concepts, side-mounted to a concrete box-beam girder. For the dynamic component testing, post-to-deck connection configurations varied on the type of welded post assembly connecting to longitudinal tubes, which in turn mounted to various anchors cast within the box-beam girder. The resulting damage from each test varied from plastic deformation of the post between two plate attachments on the post assembly or post bending above one plate attachment due to the development of a plastic hinge near the surface of the deck. The post-to-deck connection featuring a singular plate attachment was recommended for use based on the post bending near the surface of the deck, as intended.

Bridge Deck Designs for Railing Impacts. Final Report

Author : Althea Arnold
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Bridge Deck Designs for Railing Impacts. Final Report by : Althea Arnold

Download or read book Bridge Deck Designs for Railing Impacts. Final Report written by Althea Arnold and published by . This book was released on 1985 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Behavior of Field-cast Ultra-high Performance Concrete Bridge Deck Connections Under Cyclic and Static Structural Loading

Author : Benjamin A. Graybeal
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (694 download)

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Book Synopsis Behavior of Field-cast Ultra-high Performance Concrete Bridge Deck Connections Under Cyclic and Static Structural Loading by : Benjamin A. Graybeal

Download or read book Behavior of Field-cast Ultra-high Performance Concrete Bridge Deck Connections Under Cyclic and Static Structural Loading written by Benjamin A. Graybeal and published by . This book was released on 2010 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The use of modular bridge deck components has the potential to produce higher quality, more durable bridge decks; however, the required connections have often proved lacking, resulting in less than desirable overall system performance. Advanced cementitious composite materials whose mechanical and durability properties far exceed those of conventional concretes present an opportunity to significantly enhance the performance of field-cast connections thus facilitating the wider use of modular bridge deck systems. Ultra-high performance concrete (UHPC) represents a class of such advanced cementitious composite materials. Of particular interest here, UHPCs can exhibit both exceptional bond when cast against previously cast concrete and can significantly shorten the development length of embedded discrete steel reinforcement. These properties allow for a redesign of the modular component connection, facilitating simplified construction and enhanced long-term system performance. This study investigated the structural performance of field-cast UHPC connections for modular bridge deck components. The transverse and longitudinal connection specimens simulated the connections between precast deck panels and the connections between the top flanges of deck-bulb-tee girders, respectively. Testing included both cyclic and static loadings. The results demonstrated that the field-cast UHPC connection facilitates the construction of an emulative bridge deck system whose behaviors should meet or exceed those of a conventional cast-in-place bridge deck"--Technical report documentation page.

Roadside Design Guide

Author : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Publisher :
ISBN 13 :
Total Pages : 560 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Roadside Design Guide by : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety

Download or read book Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and published by . This book was released on 1989 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Development of Crashworthy Rails for Fiber Reinforced Polymer Honeycomb Bridge Deck System

Author : Moni G. El-Aasar
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (918 download)

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Book Synopsis The Development of Crashworthy Rails for Fiber Reinforced Polymer Honeycomb Bridge Deck System by : Moni G. El-Aasar

Download or read book The Development of Crashworthy Rails for Fiber Reinforced Polymer Honeycomb Bridge Deck System written by Moni G. El-Aasar and published by . This book was released on 2015 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber reinforced polymer (FRP) honeycomb panels offer an efficient and rapid replacement to concrete decks. The system consists of FRP honeycomb sandwich panels with adequate guardrails. Although FRP bridge deck panels have already been designed and used over the past several years on a number of through truss bridges, they could not be used on steel girder bridges until approved crashworthy bridge railing attachments could be validated. Two systems have been successfully crash tested, one with steel thrie beams/guardrails on steel posts and the other with concrete barriers. Both systems are now ready for use on temporary/detour bridges, or as permanent deck replacement allowing higher live load while keeping the existing steel girders and substructure. The light weight of FRP honeycomb panels (about 75% lighter than concrete) allows heavier truck loads, while keeping the existing girders and substructure without compromising the safety of the public. The roadway can be made wider by increasing the overhangs, thus allowing for wider farm equipment on narrow bridges in rural areas. The replacement of the concrete deck using this system may be completed in a matter of a few days, or even hours, as opposed to several months when using the conventional methods.

Investigation of Panel-to-Panel Connections and Block-outs for Full-Depth Precast Concrete Bridge Decks

Author :
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (918 download)

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Book Synopsis Investigation of Panel-to-Panel Connections and Block-outs for Full-Depth Precast Concrete Bridge Decks by :

Download or read book Investigation of Panel-to-Panel Connections and Block-outs for Full-Depth Precast Concrete Bridge Decks written by and published by . This book was released on 2015 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental tests were performed at Virginia Tech to investigate transverse panel-to-panel connections and horizontal shear connector block-outs for full-depth precast concrete bridge deck panels. The connections were designed for a deck replacement project for a rural three-span continuous steel beam bridge in Virginia. Two reinforced and four post-tensioned connections were designed and tested in cyclical loading. Each connection was tested on a full-scale, two-beam setup in negative bending with a simulated HS-20 vehicle. The block-outs for the horizontal shear connections were also scrutinized during construction and testing. Several surface treatments were investigated to determine the best strategy to limit cracking and leakage at the grout-concrete interface. The strain profile, cracking patterns, and ponding results are presented for all specimens. The reinforced connections and two post-tensioned connections with 167 psi initial stress experienced cracking and leaked water by the end of the cyclic loading regime. In two connections post-tensioned with an initial compressive stress of 340 psi, the tensile stress in the deck under full live load remained below approximately 3√(f'c). These transverse connections did not leak water, did not have full-depth cracking, and maintained a nearly linear strain distribution throughout the design life. Full-depth deck panels may be effectively used on continuous bridges if post-tensioning force is applied to the transverse connections to keep the total tensile stress (remaining prestress minus live load stress) below 3√(f'c) . The block-outs with a sand-blasted surface or an epoxy primer combined with a grout that met the requirements recommended by Scholz et al. (2007) had only slight water leakage, and had smaller cracks at the grout-concrete interface than the control samples. These surface treatments are recommended for best long-term performance.

Investigation and Design of Deck to Deck Connections for the Development of a Modular Stress Laminated Timber Bridge Deck System

Author : Roman Hausammann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (637 download)

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Book Synopsis Investigation and Design of Deck to Deck Connections for the Development of a Modular Stress Laminated Timber Bridge Deck System by : Roman Hausammann

Download or read book Investigation and Design of Deck to Deck Connections for the Development of a Modular Stress Laminated Timber Bridge Deck System written by Roman Hausammann and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Field-cast UHPC connections for modular bridge deck elements

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (731 download)

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Book Synopsis Field-cast UHPC connections for modular bridge deck elements by :

Download or read book Field-cast UHPC connections for modular bridge deck elements written by and published by . This book was released on 2010 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

LRFD Guide Specifications for the Design of Pedestrian Bridges

Author : American Association of State Highway and Transportation Officials
Publisher : AASHTO
ISBN 13 : 1560514698
Total Pages : 38 pages
Book Rating : 4.5/5 (65 download)

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Book Synopsis LRFD Guide Specifications for the Design of Pedestrian Bridges by : American Association of State Highway and Transportation Officials

Download or read book LRFD Guide Specifications for the Design of Pedestrian Bridges written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Performance of Post-tensioned Curved-strand Connections in Transverse Joints of Precast Bridge Decks

Author : Zane B. Wells
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (88 download)

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Book Synopsis Performance of Post-tensioned Curved-strand Connections in Transverse Joints of Precast Bridge Decks by : Zane B. Wells

Download or read book Performance of Post-tensioned Curved-strand Connections in Transverse Joints of Precast Bridge Decks written by Zane B. Wells and published by . This book was released on 2012 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerated Bridge Construction (ABC) techniques have resulted in innovative options that save time and money during the construction of bridges. One such group of techniques that has generated considerable interest is the usage of individual precast concrete members. Utilizing precast concrete decks allows for offsite curing, thus eliminating long delays due to formwork and concrete curing time. These precast concrete decks have inherent joints between the individual panels. These joints are locations for potential leakage, which can lead to corrosion or inadequate long-term performance. Post-tensioning the precast deck panels helps to eliminate leakage; however, conventional longitudinal post-tensioning systems require complete deck replacement in the event of a single faulty deck panel. A proposed post-tensioned, curved-strand connection allows for a single panel to be replaced. The capacity of the proposed curved-strand connection was investigated in order to compare its behavior to other systems that are currently in use. Tests were performed in composite negative bending, beam shear, and positive bending. The curved strand connection was found to behave similarly to the standard post-tensioning system in positive bending and shear. The curved-strand connection was found to be comparable to a standard post-tensioning system. The ultimate capacity of the curved-strand connection in negative bending was found to be 97% of the standard post-tensioning. Pre-stress losses were measured and predicted for the service life of the connection and were found to be 6% at the 75- year service life of a bridge.

Development of an Innovative Connector System for Fiber Reinforced Polymer Bridge Decks to Steel Stringers

Author : Karl E. Barth
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (162 download)

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Book Synopsis Development of an Innovative Connector System for Fiber Reinforced Polymer Bridge Decks to Steel Stringers by : Karl E. Barth

Download or read book Development of an Innovative Connector System for Fiber Reinforced Polymer Bridge Decks to Steel Stringers written by Karl E. Barth and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Connections for Modular Precast Concrete Bridge Decks

Author :
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (998 download)

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Book Synopsis Connections for Modular Precast Concrete Bridge Decks by :

Download or read book Connections for Modular Precast Concrete Bridge Decks written by and published by . This book was released on 1983 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hacker, Hoaxer, Whistleblower, Spy

Author : Gabriella Coleman
Publisher : Verso Books
ISBN 13 : 1781689830
Total Pages : 497 pages
Book Rating : 4.7/5 (816 download)

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Book Synopsis Hacker, Hoaxer, Whistleblower, Spy by : Gabriella Coleman

Download or read book Hacker, Hoaxer, Whistleblower, Spy written by Gabriella Coleman and published by Verso Books. This book was released on 2015-10-06 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ultimate book on the worldwide movement of hackers, pranksters, and activists collectively known as Anonymous—by the writer the Huffington Post says “knows all of Anonymous’ deepest, darkest secrets” “A work of anthropology that sometimes echoes a John le Carré novel.” —Wired Half a dozen years ago, anthropologist Gabriella Coleman set out to study the rise of this global phenomenon just as some of its members were turning to political protest and dangerous disruption (before Anonymous shot to fame as a key player in the battles over WikiLeaks, the Arab Spring, and Occupy Wall Street). She ended up becoming so closely connected to Anonymous that the tricky story of her inside–outside status as Anon confidante, interpreter, and erstwhile mouthpiece forms one of the themes of this witty and entirely engrossing book. The narrative brims with details unearthed from within a notoriously mysterious subculture, whose semi-legendary tricksters—such as Topiary, tflow, Anachaos, and Sabu—emerge as complex, diverse, politically and culturally sophisticated people. Propelled by years of chats and encounters with a multitude of hackers, including imprisoned activist Jeremy Hammond and the double agent who helped put him away, Hector Monsegur, Hacker, Hoaxer, Whistleblower, Spy is filled with insights into the meaning of digital activism and little understood facets of culture in the Internet age, including the history of “trolling,” the ethics and metaphysics of hacking, and the origins and manifold meanings of “the lulz.”

Canmaking

Author : Terry A. Turner
Publisher : Springer Science & Business Media
ISBN 13 : 1475747055
Total Pages : 367 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Canmaking by : Terry A. Turner

Download or read book Canmaking written by Terry A. Turner and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal protectin, including both metal treatments and coating systems. affords mutual protection for both can and contents. this book is the first reference to meld the knowledge of chemical companies and canmaking companies, covering materials and processes used in both protective and decorative aspects of metal packaging. Topics include basic substrates (aluminum and steel), demands of the markets served, basic metal-forming processes, and the specific decorative and protctive needs of different packaging types, with emphasis give to the technologies most likely to be used, such as ultraviolet curing. This practical reference gives readers a backround and familiarity with terminology and technology and gives insight into why certain technologies are used over others.

A Week at the Fair

Author : Rand McNally and Company
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis A Week at the Fair by : Rand McNally and Company

Download or read book A Week at the Fair written by Rand McNally and Company and published by . This book was released on 1893 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Macondo Well Deepwater Horizon Blowout

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309221412
Total Pages : 236 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Macondo Well Deepwater Horizon Blowout by : National Research Council

Download or read book Macondo Well Deepwater Horizon Blowout written by National Research Council and published by National Academies Press. This book was released on 2012-03-02 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: The blowout of the Macondo well on April 20, 2010, led to enormous consequences for the individuals involved in the drilling operations, and for their families. Eleven workers on the Deepwater Horizon drilling rig lost their lives and 16 others were seriously injured. There were also enormous consequences for the companies involved in the drilling operations, to the Gulf of Mexico environment, and to the economy of the region and beyond. The flow continued for nearly 3 months before the well could be completely killed, during which time, nearly 5 million barrels of oil spilled into the gulf. Macondo Well-Deepwater Horizon Blowout examines the causes of the blowout and provides a series of recommendations, for both the oil and gas industry and government regulators, intended to reduce the likelihood and impact of any future losses of well control during offshore drilling. According to this report, companies involved in offshore drilling should take a "system safety" approach to anticipating and managing possible dangers at every level of operation-from ensuring the integrity of wells to designing blowout preventers that function under all foreseeable conditions-in order to reduce the risk of another accident as catastrophic as the Deepwater Horizon explosion and oil spill. In addition, an enhanced regulatory approach should combine strong industry safety goals with mandatory oversight at critical points during drilling operations. Macondo Well-Deepwater Horizon Blowout discusses ultimate responsibility and accountability for well integrity and safety of offshore equipment, formal system safety education and training of personnel engaged in offshore drilling, and guidelines that should be established so that well designs incorporate protection against the various credible risks associated with the drilling and abandonment process. This book will be of interest to professionals in the oil and gas industry, government decision makers, environmental advocacy groups, and others who seek an understanding of the processes involved in order to ensure safety in undertakings of this nature.