Crash Testing And Evaluation Of The Hdot S Thrie Beam Approach Guardrail Transition Attached To 42 In Tall Solid Concrete Bridge Rail With Aesthetic Recessed Rounded Panels And 6 Ft Wide Sidewalk
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Crash Testing And Evaluation Of The Hdot S Thrie Beam Approach Guardrail Transition Attached To 42 In Tall Solid Concrete Bridge Rail With Aesthetic Recessed Rounded Panels And 6 Ft Wide Sidewalk
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Author : Tewodros Y. Yosef
language : en
Publisher:
Release Date : 2022
Crash Testing And Evaluation Of The Hdot S Thrie Beam Approach Guardrail Transition Attached To 42 In Tall Solid Concrete Bridge Rail With Aesthetic Recessed Rounded Panels And 6 Ft Wide Sidewalk written by Tewodros Y. Yosef and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Bridge railings categories.
Crash Testing And Evaluation Of The Hdot 42 In Tall Solid Concrete Bridge Rail With Aesthetic Recessed Rounded Panels And 6 In Tall Sidewalk
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Author : Rodrigo A. Quintero
language : en
Publisher:
Release Date : 2022
Crash Testing And Evaluation Of The Hdot 42 In Tall Solid Concrete Bridge Rail With Aesthetic Recessed Rounded Panels And 6 In Tall Sidewalk written by Rodrigo A. Quintero and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Bridge railings categories.
Two Approach Guardrail Transitions For Concrete Safety Shape Barriers
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Author :
language : en
Publisher:
Release Date : 1998
Two Approach Guardrail Transitions For Concrete Safety Shape Barriers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Impact categories.
Two approach guardrail transitions for use with concrete safety shape barriers were developed and crash tested. For this study, the transition systems were attached to the New Jersey safety shape concrete barrier; however, it is believed that these transition systems could be easily adapted to the F-shape barrier with no need for further crash testing. Both transition designs were constructed with two nested thrie beam rails measuring 2.66-mm thick. The first transition design was supported by nine W150x13.5 steel posts measuring, 1,981-mm long, while the second transition design was supported by nine 152-mm x 203-mm wood posts measuring 2,134-mm long. For both systems, post spacings consisted on one at 292 mm, five at 476 mm, and three at 952 mm. A triangular-shape concrete curb was constructed below the thrie beam rail on each approach guardrail transition system. The two transition systems successfully met the Test Level 3 requirements specified in NCHRP Report 350, "Recommended Procedures for the Safety Performance Evaluation of Highway Features."
Vehicle Crash Tests Of Steel Bridge Barrier Rail Systems For Use On Secondary Highways
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Author : John Jewell
language : en
Publisher:
Release Date : 1993
Vehicle Crash Tests Of Steel Bridge Barrier Rail Systems For Use On Secondary Highways written by John Jewell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Bridge railings categories.
A total of seven vehicle crash tests were performed, three involving a Type 115 bridge rail and four involving a thrie beam bridge rail. Additional static testing was done on five steel bridge rail posts with different types of post stiffeners. The Type 115 bridge rail consisted of two tube steel rails (4x4x0.25 in.) supported off the edge of deck by steel wide flange posts at 8 ft 0 in. spacing. The thrie beam bridge rail consisted of 10 ga. thrie beam panels blocked out and supported on the edge of deck by steel wide flange posts at 6 ft 3 in. spacing. The typical heights for the Type 115 and the thrie beam bridge rails were 30 and 32 in., respectively. There were two impact tests on the Type 115 bridge rail, one on the Type 115 bridge rail transition, two on the thrie beam bridge rail, and two on the thrie beam bridge rail transition.
Crash Testing And Evaluation Of The Hdot 34 In Tall Aesthetic Concrete Bridge Rail With Pedestrian Handrail And Sidewalk
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Author : Brandon Perry
language : en
Publisher:
Release Date : 2022
Crash Testing And Evaluation Of The Hdot 34 In Tall Aesthetic Concrete Bridge Rail With Pedestrian Handrail And Sidewalk written by Brandon Perry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Bridge railings categories.
Testing Of State Roadside Safety Systems Volume Ii Appendix A Crash Testing And Evaluation Of A Michigan Thrie Beam Transition Design
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Author : K. K. Mak
language : en
Publisher:
Release Date : 1996
Testing Of State Roadside Safety Systems Volume Ii Appendix A Crash Testing And Evaluation Of A Michigan Thrie Beam Transition Design written by K. K. Mak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Evaluation Of Bridge Approach Rails
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Author : Roger P. Bligh
language : en
Publisher:
Release Date : 1992
Evaluation Of Bridge Approach Rails written by Roger P. Bligh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Bridge railings categories.
A recent study on the performance of guardrail-to-bridge rail transitions revealed that many widely used designs do not meet current safety standards. As a result, the Federal Highway Administration (FHWA) requested that the Arizona Department of Transportation verify the safety performance of its standard transition designs. Three transition designs currently being used by ADOT were evaluated through a combined program of computer simulation and full-scale crash testing. The standard ADOT wood post transition, incorporating a channel rubrail and two different sizes of timber posts at a reduced post spacing near the bridge rail end, was found to be in compliance with National Cooperative Highway Research Program (NCHRP) Report 230 performance criteria. The standard ADOT steel post transition with channel rubrail was also found to be in compliance with NCHRP Report 230 requirements when impacted near the end of the bridge rail. However, the upstream end of the steel post transition required modification to eliminate deficiencies identified during testing. The modified design, which terminated the channel rubrail behind a W6x9 guardrail post, was successfully crash tested. A recent study on the performance of guardrail-to-bridge rail transitions revealed that many widely used designs do not meet current safety standards. As a result, the Federal Highway Administration (FHWA) requested that the Arizona Department of Transportation verify the safety performance of its standard transition designs. Three transition designs currently being used by ADOT were evaluated through a combined program of computer simulation and full-scale crash testing. The standard ADOT wood post transition, incorporating a channel rubrail and two different sizes of timber posts at a reduced post spacing near the bridge rail end, was found to be in compliance with National Cooperative Highway Research Program (NCHRP) Report 230 performance criteria. The standard ADOT steel post transition with channel rubrail was also found to be in compliance with NCHRP Report 230 requirements when impacted near the end of the bridge rail. However, the upstream end of the steel post transition required modification to eliminate deficiencies identified during testing. The modified design, which terminated the channel rubrail behind a W6x9 guardrail post, was successfully crash tested.
Testing And Evaluation Of The W Beam Transition On Steel Posts With Timber Blockouts To The Vertical Flared Back Concrete Bridge Parapet
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Author : King K. Mak
language : en
Publisher:
Release Date : 1997
Testing And Evaluation Of The W Beam Transition On Steel Posts With Timber Blockouts To The Vertical Flared Back Concrete Bridge Parapet written by King K. Mak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Automobiles categories.
The crash test reported herein was performed in an effort to evaluate a modified W-beam transition design (on steel posts with timber blockouts) to the vertical flared back concrete bridge parapet according to NCHRP Report 350 guidelines. The crash test performed corresponded to NCHRP Report 350 test designation 3-11 involving a 2000P test vehicle impacting the transition at a nominal speed and angle of 100 km/h and 25 degrees.
Crash Testing And Evaluation Of The Hawaii Thrie Beam Approach Guardrail Transition
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Author : Scott K. Rosenbaugh
language : en
Publisher:
Release Date : 2020
Crash Testing And Evaluation Of The Hawaii Thrie Beam Approach Guardrail Transition written by Scott K. Rosenbaugh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Bridge railings categories.
Development Of A Mash Tl 3 Approach Guardrail Transition To A Mash Tl 4 Steel Bridge Rail
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Author : Jennifer D. Rasmussen
language : en
Publisher:
Release Date : 2020
Development Of A Mash Tl 3 Approach Guardrail Transition To A Mash Tl 4 Steel Bridge Rail written by Jennifer D. Rasmussen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Bridges categories.
A Manual for Assessing Safety Hardware (MASH) Test Level 3 (TL-3) approach guardrail transition (AGT) was designed to connect the Midwest Guardrail System (MGS) to a MASH TL-4 steel-post, steel-tube, bridge rail, Type IL-OH. Two connection concepts were evaluated using the LS-DYNA finite element analysis computer software. The second concept was selected for further evaluation with full-scale crash testing, which included a previously-developed, thrie-beam, approach guardrail transition, modified HSS8x6x1/4 transition tube rails that aligned with the lower and middle bridge rail tubes, and new connection hardware designed to prevent vehicle snag during reverse-direction impacts. The critical impact points were selected using LS-DYNA for MASH test designation nos. 3-20 and 3-21 in the impact direction from the thrie-beam to the bridge rail. MASH test designation nos. 3-20 and 3-21 in the impact direction from the bridge rail to the thrie-beam AGT were determined to be non-critical. In test no. STBRT-1, the 2,404-lb small car impacted the AGT at a speed of 64.6 mph, an angle of 25.2 degrees, and at a location 21.3 in. upstream from post no. 19, thus resulting in an impact severity of 60.9 kip-ft. The small car was contained and redirected and resulted in a successful test according to MASH test designation no. 3-20 safety performance criteria. In test no. STBRT-2, the 5,007-lb quad cab pickup truck impacted the AGT at a speed of 62.7 mph, an angle of 24.9 degrees, and at a location 15.9 in. upstream from post no. 19, thus resulting in an impact severity of 116 kip-ft. The pickup truck was contained and redirected and resulted in a successful test according to MASH test designation no. 3-21 safety performance criteria.