Nchrp Report 350 Compliance Test Of The New Jersey Safety Shaped Barrier
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Nchrp Report 350 Compliance Test Of The New Jersey Safety Shaped Barrier
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Author : King K. Mak
language : en
Publisher:
Release Date : 1997
Nchrp Report 350 Compliance Test Of The New Jersey Safety Shaped Barrier 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 New Jersey safety shaped barrier is one of the most common barriers currently in use on the Nation's highways. The barrier has successfully met all evaluation criteria set forth in National Cooperative Highway Research Program (NCHRP) Report 230. However, with the adoption of NCHRP Report 350 by the Federal Highway Administration (FHWA) as the official guidelines for crash testing of roadside safety features, it became necessary to reevaluate the New Jersey safety shaped barrier to the new guidelines. Of particular importance is the replacement of one of the design test vehicles specified in NCHRP Report 230, the 2044-kg passenger car, by a 2000-kg pickup truck (2000P) under NCHRP Report 350 guidelines. The crash test reported herein was performed as an effort to evaluate the New Jersey safety shaped barrier 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 barrier at a nominal speed and angle of 100 km/h and 25 degrees. The New Jersey safety shaped barrier met all evaluation criteria set forth in NCHRP Report 350 and the test was judged to be satisfactory.
Nchrp Report 350 Testing Of Montana Portable Concrete Safety Shape Barriers
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Author : Eugene Buth
language : en
Publisher:
Release Date : 2003
Nchrp Report 350 Testing Of Montana Portable Concrete Safety Shape Barriers written by Eugene Buth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Roads categories.
The existing Montana Department of Transportation (DOT) concrete median barrier sections are 3.048 m (10 ft) long New Jersey shaped barriers with a pin-and-loop connection. Two pairs of 25 mm (1 in.) diameter wire rope loops are connected using a 660 mm (26 in.) long, 25 mm (1 in.) diameter pin that is not restrained at the bottom. Since the system has a low probability of complying with the NCHRP Report 350 guidelines, and the expected dynamic barrier deflection under design impact conditions is greater than desired by Montana DOT, two alternate barrier connection concepts were proposed and evaluated using computer simulations. These included a modified pin-and-loop connection and a newly conceived lapped splice connection. After these two designs appeared to perform acceptably during simulation, the proposed designs were constructed for full-scale crash testing to determine whether the designs would actually meet NCHRP Report 350 crash test criteria. This report presents the details of the simulation analysis, the details of the proposed barrier designs, the details of the full-scale crash tests, and the NCHRP Report 350 evaluation of each of the tests. Both the modified pin-and-loop barrier and the lapped splice connection barrier performed acceptably for NCHRP Report 350 test 3-11.
Development Of An Nchrp Report 350 Tl 3 New Jersey Shape 50 Inch Portable Concrete Barrier
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Author : Chuck A. Plaxico
language : en
Publisher:
Release Date : 2006
Development Of An Nchrp Report 350 Tl 3 New Jersey Shape 50 Inch Portable Concrete Barrier written by Chuck A. Plaxico and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Concrete categories.
For roadside work-zones in areas that have opposing traffic flow, safety is enhanced if the temporary barriers incorporate a "glare-shield" that blocks headlight glare from opposing traffic. Currently-available 32-inch portable concrete barriers require the use of an add-on glare shield attached to the top of the barrier. The add-on glare shields are an extra expense and complicate barrier set-up and handling. An alternative solution was to develop a 50-inch high portable concrete barrier which is tall enough to serve as its own glare-shield. Finite element analysis was used to investigate various barrier shapes and connection schemes to identify a successful crashworthy design that would meet requirments of NCHRP Report 350 Test level 3. A 50-inch portable concrete barrier design was developed based on the results of the finite element analyses and was crash tested at the Transportation Research Center in East Liberty, Ohio. The system successfully met all safety criteria of NCHRP Report 350 and has been approved by the Federal Highway Administration for use on the National Highway System as a test level 3 device.
Development Of A Plan For Compliance With Nchrp 350 For Temporary Concrete Barriers
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Author : Muhannad Zubi
language : en
Publisher:
Release Date : 2002
Development Of A Plan For Compliance With Nchrp 350 For Temporary Concrete Barriers written by Muhannad Zubi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Report (National Cooperative Highway Research Program). categories.
The Federal Highway Administration has mandated that temporary concrete barriers (TCBs) used on federally funded projects on the National Highway System advertised after October 1, 2002 shall meet the requirements of National Cooperative Highway Research Program (NCHRP) Report 350. The State's present TCB system design is not approved as meeting the NCHRP 350 requirements, and even with modifications it is not likely to meet those standards. The Arizona Department of Transportation (ADOT) and Arizona industry partners are to evaluate many key factors in the ADOT's effort to develop an NCHRP 350 compliance plan for TCBs. Arizona intends to adopt the most valid non-proprietary TCB design, out of already approved designs, for future use in Arizona.
Performance Evaluation Of The Permanent New Jersey Safety Shape Barrier Update To Nchrp 350 Test No 4 12 2214nj 2
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Author : Karla A. Polivka
language : en
Publisher:
Release Date : 2006
Performance Evaluation Of The Permanent New Jersey Safety Shape Barrier Update To Nchrp 350 Test No 4 12 2214nj 2 written by Karla A. Polivka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Roads categories.
Performance Evaluation Of The Permanent New Jersey Safety Shape Barrier Update To Nchrp 350 Test No 3 10 2214nj 1
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Author : Karla A. Polivka
language : en
Publisher:
Release Date : 2006
Performance Evaluation Of The Permanent New Jersey Safety Shape Barrier Update To Nchrp 350 Test No 3 10 2214nj 1 written by Karla A. Polivka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Roads categories.
Public Roads
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Author :
language : en
Publisher:
Release Date : 1998
Public Roads 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 Highway research categories.
Evaluation Of Cross Median Crashes
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Author : Hampton Clay Gabler
language : en
Publisher:
Release Date : 2005
Evaluation Of Cross Median Crashes written by Hampton Clay Gabler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Median strips categories.
Nchrp Report 350 Test 3 11 Of The Washington Type 2 Concrete Barrier
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Author : Delbert Lance Bullard
language : en
Publisher:
Release Date : 2001
Nchrp Report 350 Test 3 11 Of The Washington Type 2 Concrete Barrier written by Delbert Lance Bullard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Median strips categories.
Two crash tests are required to evaluate portable concrete barriers, such as Washington Department of transportation (WsDOT) Type 2 concrete barriers, to NCHRP Report 350 test level three (TL-3). NCHRP Report 350 test designation 3-10 involves an 820 kg passenger vehicle impacting the critical impact point (CIP) of the length of need (LON) section at a nominal speed and angle of 100 km/h and 20 degrees. NCHRP Report 350 test designation 3-11 involves a 2000 kg pickup truck impacting the CIP of the LON section at a nominal speed and angle of 100 km/h and 25 degrees. Finite element analysis using LS-DYNA was used to simulate NCHRP Report 350 test designation 3-11 with the 2000 kg pickup truck on the standard Type 2 concrete barrier with a pin and loop connection and two modified pin and loop connections. In subsequent full-scale crash tests, both the standard and a modified concrete barrier met the evaluation criteria of NCHRP Report 350 for Test 3-11. For each of the two pin and loop configurations crash tested, the Washington Type 2 concrete barrier met the evaluation criteria of NCHRP Report 350 for test 3-11.
In Service Performance Of Guardrail Terminals In Washington State
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Author : Pius O. Igharo
language : en
Publisher:
Release Date : 2004
In Service Performance Of Guardrail Terminals In Washington State written by Pius O. Igharo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Roads categories.