Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Performance Evaluation Of The Free Standing Temporary Barrier Update To Nchrp 350 Test No 3 11 With 28 Cg Height 2214tb 2 PDF full book. Access full book title Performance Evaluation Of The Free Standing Temporary Barrier Update To Nchrp 350 Test No 3 11 With 28 Cg Height 2214tb 2.
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 71 |
| Release | : 2006 |
| Genre | : Bridge railings |
| ISBN | : |
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 72 |
| Release | : 2006 |
| Genre | : Bridge railings |
| ISBN | : |
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 95 |
| Release | : 2006 |
| Genre | : Roads |
| ISBN | : |
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 69 |
| Release | : 2006 |
| Genre | : Bridge railings |
| ISBN | : |
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 72 |
| Release | : 2006 |
| Genre | : Roads |
| ISBN | : |
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 62 |
| Release | : 2006 |
| Genre | : Roads |
| ISBN | : |
| Author | : Delbert Lance Bullard |
| Publisher | : |
| Total Pages | : 89 |
| Release | : 2001 |
| Genre | : Median strips |
| ISBN | : |
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.
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 75 |
| Release | : 2006 |
| Genre | : Bridge railings |
| ISBN | : |
| Author | : Karla A. Polivka |
| Publisher | : |
| Total Pages | : 65 |
| Release | : 2006 |
| Genre | : Roads |
| ISBN | : |
| Author | : Chuck A. Plaxico |
| Publisher | : |
| Total Pages | : 198 |
| Release | : 2006 |
| Genre | : Concrete |
| ISBN | : |
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.
