Determination of minimum height and lateral design load for MASH test level 4 bridge rails.

Sheikh, Nauman M.; Bligh, Roger P.; Ivev, Don L.; Texas Transportation Institute

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

i

Determination of minimum height and lateral design load for MASH test level 4 bridge rails.

2011-12-01
By Sheikh, Nauman M. ; Bligh, Roger P. ; Ivev, Don L.

[PDF-7.00 MB]

Select the Download button to view the document

This document is over 5mb in size and cannot be previewed

English

Details You May Also Like

Details:

Creators:

Sheikh, Nauman M. ; Bligh, Roger P. ; Ivev, Don L.

Sheikh, Nauman M. ; Bligh, Roger P. ; Ivev, Don L. Less -
Corporate Creators:

Texas Transportation Institute
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Bridge Railings Bridge Railings--Crash Tests--Texas Bridge Superstructures Guardrails Highway Safety Impact Tests Mechanical Tests Transportation Safety
Publication/ Report Number:

FHWA/TX-12/9-1002-5 ; Test Report 9-1002-5

FHWA/TX-12/9-1002-5 ; Test Report 9-1002-5 Less -
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Test report; Aug. 2009¿Aug. 2010.
Corporate Publisher:

Texas Transportation Institute
Abstract:

The Manual for Assessing Safety Hardware (MASH) prescribes higher design vehicle impact speed and mass for test level 4 barriers compared to its predecessor National Cooperative Highway Research Program (NCHRP) Report 350. This has resulted in a 56 percent increase in impact severity for test level 4. The current American Association of State Highway Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Specifications require test level 4 bridge rails to have a minimum rail height of 32 inches and to be designed for a 54-kip lateral load. These requirements were based on NCHRP Report 350 impact conditions and need to be revised for the higher impact severity under MASH. A recent MASH test 4-21 with a 32-inch tall New Jersey profile rigid concrete barrier, which performed acceptably under NCHRP Report 350 TL-4, resulted in the vehicle rolling over the barrier.

This research had the objectives of determining the minimum rail height and lateral design impact load for MASH test level 4 bridge rails. Using parametric finite element analysis and subsequent crash testing, the researchers determined the minimum recommended rail height for MASH TL-4 impact conditions to be 36 inches. Lateral design impact load for MASH TL-4 test conditions was determined to be 80 kips.

A 36-inch tall Single Slope Traffic Rail (SSTR) that meets these rail height and lateral load capacity requirements was crash tested. The 36-inch tall SSTR successfully contained and redirected the impacting vehicle. Details of the simulation analysis, barrier design, full-scale crash testing, and crash test results are presented in this report.
Format:

PDF
Funding:

Project 9-1002
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a4b0ee981e2ec9b7d83ecc58a58c7d267330628191c7cdd0aae02aefdd4aa27a
Download URL:

https://rosap.ntl.bts.gov/view/dot/23779/dot_23779_DS1.pdf
File Type:

No Additional Files

More +

Determination of minimum height and lateral design load for MASH test level 4 bridge rails.

Details:

Supporting Files

You May Also Like