Development Of A Post To Deck Connection For A Tl 4 Steel Tube Bridge Rail
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Development Of A Post To Deck Connection For A Tl 4 Steel Tube Bridge Rail
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Author : Pascual Mauricio
language : en
Publisher:
Release Date : 2020
Development Of A Post To Deck Connection For A Tl 4 Steel Tube Bridge Rail written by Pascual Mauricio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Roads categories.
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.
Development Of Post To Deck Connections For Use In A Mash Tl 4 Steel Tube Bridge Rail
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Author : Pascual Mauricio
language : en
Publisher:
Release Date : 2019
Development Of Post To Deck Connections For Use In A Mash Tl 4 Steel Tube Bridge Rail written by Pascual Mauricio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
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 Mash Test Level 4 Steel Side Mounted Beam And Post Bridge Rail
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Author : Oscar Pena
language : en
Publisher:
Release Date : 2020
Development Of A Mash Test Level 4 Steel Side Mounted Beam And Post Bridge Rail written by Oscar Pena and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Roads categories.
A new steel, side-mounted, beam-and-post, bridge rail was designed, crash-tested, and evaluated according to safety performance guidelines included in the American Association of State Highway and Transportation Officials Manual for Assessing Safety Hardware, Second Edition (MASH 2016) for Test Level 4 (TL-4). The new bridge rail system was designed to be compatible with multiple concrete bridge decks utilized by the States of Illinois and Ohio. Bridge rail configurations were designed and optimized based on weight per foot, constructability, and safety. Post-to-rail and rail-to-rail connections were designed for the new bridge rail. Several concepts for these connections were configured, and after discussion with representatives from Illinois and Ohio Departments of Transportation, a preferred concept was selected for full-scale crash testing with a single-unit truck (SUT), a pickup truck, and a small car. The new bridge rail consisted of three tubular steel rail elements supported by W6x15 (W150x22.5) steel posts mounted to the exterior, vertical edge of the concrete deck and spaced at 8 ft (2.4 m) on centers. The top rail element was an HSS 12-in. x 4-in. x 1⁄4-in. (HSS 304.8-mm x 101.6-mm x 6.4-mm) and the lower two rail elements were HSS 8-in. x 6-in. x 1⁄4-in. (HSS 203.2-mm x 152.4-mm x 6.4-mm). The centerline heights of the rail elements were 37 in. (940 mm), 28 in. (711 mm), and 16 in. (406 mm) above the surface of the deck for the top, middle, and bottom rails, respectively. Four MASH 2016 TL-4 crash tests were performed on the new bridge rail, which successfully contained and redirected each of the MASH 2016 TL-4 vehicles. All occupant risk measures and evaluation criteria were within MASH 2016 limits. In the initial run of test designation no. 4-12, test no. STBR-1 with the SUT, the impact severity did not meet the minimum limit of 142.0 kip-ft (180.6 kJ). Thus, test designation no. 4-12 was re-run in test no. STBR-4, and the results met all MASH 2016 impact safety criteria, ensuring that the new bridge rail meets MASH 2016 TL-4 standards.
Development Of A Low Cost Energy Absorbing Bridge Rail
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Author : Jeffrey C. Thiele
language : en
Publisher:
Release Date : 2010
Development Of A Low Cost Energy Absorbing Bridge Rail written by Jeffrey C. Thiele and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Bridge railings categories.
Underground And Other Structural Design Issues
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Author :
language : en
Publisher:
Release Date : 1999
Underground And Other Structural Design Issues written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Culverts categories.
Prioritization Of Research On Bridge Railings For Use On Timber Deck Bridges And Development Of Two Glulam Bridge Railing Systems
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Author : Jared T. Duren
language : en
Publisher:
Release Date : 2021
Prioritization Of Research On Bridge Railings For Use On Timber Deck Bridges And Development Of Two Glulam Bridge Railing Systems written by Jared T. Duren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
In the past, many timber bridge railings, bridge railings for use on timber deck bridges, and approach guardrail transition systems to accompany these railings, have been developed to meet different impact safety criteria. Through an extensive literature review, the design details of these systems were identified and organized. A survey was then developed and distributed to multiple government agencies and timber industry members to identify their desire for these bridge railing and approach guardrail transition systems to be developed to meet current American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware (MASH) impact safety criteria. The data provided from the survey was analyzed, and a list of 15 bridge railing systems was created, which included accompanying approach guardrail transitions. This list prioritized the bridge railing systems based upon the number of survey respondents requesting such a bridge railing system. Cost estimates for the research and development of each bridge railing system were also provided in order to proceed into subsequent phases of this research project. The development of a MASH TL-4 glued-laminated (glulam) timber rail with curb bridge railing system was initiated in Phase II. Many similar systems have been developed in the past to meet previous impact safety criteria, but an updated design was necessary to meet current MASH impact safety criteria. Through impact simulations with the computer software program BARRIER VII, a model was created and calibrated to previous crash testing results. After a series of modifications to the bridge railing system represented in the model, including increasing the size and height of multiple components, the simulation effort demonstrated that the modified TL-4 bridge railing was acceptable under the MASH criteria. Additional research on connection details and timber deck strengths, the development of an approach guardrail transition system, and component and full-scale testing programs are yet to be performed in the completion of the Phase II project. An additional project was advanced and involved the adaptation of a previouslydeveloped, MASH TL-1 crashworthy, low-height, curb-type, glulam bridge railing system for transverse, nail-laminated decks to be capable of use on transverse, glulam timber decks, which is part of a Phase III effort. Analysis of the system components and timber deck types led to the creation of a static and dynamic component testing program utilizing two surrogate bridge decks. To date, the test plans and details have been developed, with the construction and testing programs yet to be performed. In the future, results from the component testing program will be utilized to demonstrate that the bridge railing system contains adequate height and strength when used on transverse, glulam timber decks.
Hydrology Hydraulics And Water Quality
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Author :
language : en
Publisher:
Release Date : 2001
Hydrology Hydraulics And Water Quality written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Bridges categories.
Transportation Research Record contains the following papers: Environmental impact of runoff from highway construction and repair materials : project overview (Huber, WC, Nelson, PO, Eldin, NN, Williamson, KJ and Lundy, JR); Results of California Department of Transportation litter management pilot study (Lippner, G, Johnston, J, Combs, S, Walter, K and Marx, D); Environmental impact of construction and repair materials on surface water and groundwater : screening and evaluation methodology (Nelson, PO, Williamson, KJ, Azizian, MF, Thayumanavan, P, Huber, WC and Eldin, NN); Environmental impact of construction and repair materials on surface water and groundwater : detailed evaluation of waste-amended highway materials (Thayumanavan, P, Nelson, PO, Azizian, MF, Williamson, KJ and Lundy, JR); Characteristics of storm-water runoff from highway construction sites in California (Kayhanian, M, Murphy, K, Regenmorter, L and Haller, R); Estimation and internet-based dissemination of extreme rainfall information (Durrans, SR and Brown, PA); Step-pool morphology in high-gradient countersunk culverts (Maxwell, AR, Papanicolaou, AN, Hotchkiss, RH, Barber, ME and Schafer, J); Consideration of stream morphology in culvert and bridge design (Kosicki, AJ and Davis, SR); Compliance testing of a bullnose median barrier system : NCHRP report 350 (Bielenberg, BW, Reid, JD and Faller, RK); Washington State cable median barrier (Albin, RB, Bullard, DL and Menges, WL); W-beam guardrail adjacent to a slope (Polivka, Ka, Faller, RK, Sicking, DL and Rohde, JR); Improvements to the weak-post w-beam guardrail (Ray, MH, Engstrand, K, Plaxico, CA and McGinnis, RG); Three-strand cable median barrier in North Caroline : in-service evaluation (Hunter, WW, Stewart, JR, Eccles, KA, Huang, HF, Council, FM and Harkey, DL); Selection of roadside safety barrier containment level according to European Union standards (Montella, A); Unreported collisions with post-and-beam guardrails in Connecticut, Iowa, and North Carolina (Ray, MH and Weir, JA); Performance of w-beam splices (Ray, MH, Plaxico, CA and Engstrand, K); Development of two test level 2 bridge railings and transitions for use on transverse glue-laminated deck bridges (Faller, RK, Rosson, BT, Ritter, MA, Keller, EA and Duwadi, SR).
Transportation Research Record
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Author :
language : en
Publisher:
Release Date : 2000
Transportation Research Record written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Air travel categories.
Lrfd Guide Specifications For The Design Of Pedestrian Bridges
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Author : American Association of State Highway and Transportation Officials
language : en
Publisher: AASHTO
Release Date : 2009
Lrfd Guide Specifications For The Design Of Pedestrian Bridges written by American Association of State Highway and Transportation Officials and has been published by AASHTO this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Bridges categories.
Roadside Design Guide
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Author : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
language : en
Publisher:
Release Date : 1989
Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Roads categories.