Guidance For The Selection Use And Maintenance Of Cable Barrier Systems PDF Download
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Author | : |
Publisher | : |
Total Pages | : 134 |
Release | : 2012 |
Genre | : Roads |
ISBN | : 9780309258425 |
Download Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems Book in PDF, ePub and Kindle
This report provides guidance for the selection, use, and maintenance of cable barrier systems. While cable barrier systems have been in use for more than 70 years, their use has been on the rise and is expected to continue in the future. The increase in use of cable barrier systems has been attributed to the success rate in keeping vehicles from crossing the median, reducing roadway departures, and decreasing impact severity. Due to advancements in cable barrier system technology, installation and repair costs are lower and cable barrier use has increased in varying roadway environments. Safety studies, although limited, have shown that cable barriers help reduce those median cross-over collisions that lead to some of the most severe head-on type crashes. This document will be of particular interest to design, maintenance, traffic, and safety engineering professionals.
Author | : Scott Allen Cooner |
Publisher | : |
Total Pages | : |
Release | : 2009 |
Genre | : Cables |
ISBN | : |
Download Development of Guidelines for Cable Median Barrier Systems in Texas Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 148 |
Release | : 2012 |
Genre | : Roads |
ISBN | : 9780309258425 |
Download Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems Book in PDF, ePub and Kindle
This report provides guidance for the selection, use, and maintenance of cable barrier systems. While cable barrier systems have been in use for more than 70 years, their use has been on the rise and is expected to continue in the future. The increase in use of cable barrier systems has been attributed to the success rate in keeping vehicles from crossing the median, reducing roadway departures, and decreasing impact severity. Due to advancements in cable barrier system technology, installation and repair costs are lower and cable barrier use has increased in varying roadway environments. Safety studies, although limited, have shown that cable barriers help reduce those median cross-over collisions that lead to some of the most severe head-on type crashes. This document will be of particular interest to design, maintenance, traffic, and safety engineering professionals.
Author | : British Standards Institute Staff |
Publisher | : |
Total Pages | : 48 |
Release | : 1913-08-31 |
Genre | : |
ISBN | : 9780580812033 |
Download Guidance for the Selection, Installation and Use of Vehicle Security Barrier Systems Book in PDF, ePub and Kindle
Security, Barriers, Road vehicles, Protective barriers, Security systems in buildings, Access control systems (buildings), Bollards (traffic), Crash barriers, Safety devices, Street furniture, Traffic control, Risk assessment, Safety measures, Selection, Installation, Impact strength, Foundations
Author | : British Standards Institution |
Publisher | : |
Total Pages | : 39 |
Release | : 2013 |
Genre | : |
ISBN | : |
Download BSI PAS 69:2013 Book in PDF, ePub and Kindle
Author | : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety |
Publisher | : |
Total Pages | : 560 |
Release | : 1989 |
Genre | : Roads |
ISBN | : |
Download Roadside Design Guide Book in PDF, ePub and Kindle
Author | : Hampton Clay Gabler |
Publisher | : |
Total Pages | : 110 |
Release | : 2010 |
Genre | : Technology & Engineering |
ISBN | : |
Download Criteria for Restoration of Longitudinal Barriers Book in PDF, ePub and Kindle
TRB's National Cooperative Highway Research Program (NCHRP) Report 656: Criteria for Restoration of Longitudinal Barriers explores the identification of levels of damage and deterioration to longitudinal barriers that require repairs to restore operational performance.
Author | : Thornchaya Wejrungsikul |
Publisher | : |
Total Pages | : |
Release | : 2011 |
Genre | : Bridges |
ISBN | : |
Download Design of Short Drilled Shaft Foundations in High-plasticity Clay Under Inclined Loading Book in PDF, ePub and Kindle
Drilled shaft foundations are primarily used to support structures such as bridge piers, towers, buildings, transmission towers, and roadway median cable barriers. Generally, the main characteristics of drilled shafts are to transfer the loads to the stronger subsoil layers in the vertical direction and also their ability to withstand lateral movements from lateral loads applied. Though the design of shafts is well established with respect to combinations of loads and moments, their behavior under pullout type inclined loading is not well established. The inclined load applied is the combination of lateral and uplift loads applied at the same time and structures such as ends of cable barriers and transmission towers that are supported by the drilled shafts. This dissertation research mainly focuses on the use of drilled shafts supporting at the ends of the cable median barrier systems. These shafts play an important role in protecting the integrity of the cables thereby reducing cross-over collisions at highway medians. Several foundation problems were recorded in north Texas when drilled shafts were used to connect all the cables of the cable barrier systems. During December 2006 to February 2007, several foundation failures of three cable median barrier were observed in Kaufman County near Dallas without any traffic related vehicular impacts (Heady, 2008). Preliminary investigation of foundation failures showed that failed drilled shafts were located in a high plasticity clay environment. Causes of failures are attributed to cold temperature induced shrinkage in the cables that might have significantly increased the tensions in them. Other factors consist of soil saturation from prolonged rainfall events and also potential use of smaller size drilled shafts at the site. In order to fully understand the causes of failures, the present dissertation research was performed. As a part of this research, various sizes of drilled shafts were designed and constructed in a clayey soil environment similar to the one where foundation distress was observed. Geotechnical sampling and laboratory testing were performed and the test results showed different soil layers including high plasticity clayey soil near the ground surface. Soil strength properties for both unsaturated (field condition) and saturated conditions were determined and these results are used in the analysis of field test results to deduce the causes of foundation distress. A new load test setup for the application of an inclined tensile loading on the drilled shaft was designed to simulate the natural field loading condition exerted by the cables. The capacities of different sizes of drilled shafts from field test were tested and measured with this setup and these results showed that the dimensions of reaction test piers and spacings used between reaction and test piers have yielded results that are not influenced by the boundary effects or reaction shaft movements. All load tests were conducted until the foundations reached failure. Test results were analyzed with both uplift capacity and lateral capacity analyses models proposed by many researchers as well as Finite Element Method (FEM) based numerical modeling in understanding the behaviors of drilled shafts under the inclined loading. After obtaining good simulation results, the analytical models are further used for various hypothetical foundation dimensions and for different undrained shear strengths of soils. These test results are used to develop foundation design charts for inclined loading conditions. Both the selection of a specific design chart and its use are explained. Additionally, drilled shaft construction guidelines for cable barrier systems and recommendation for periodic maintenance are provided.
Author | : |
Publisher | : |
Total Pages | : 48 |
Release | : 1985 |
Genre | : Roads |
ISBN | : |
Download Improving Guardrail Installations on Local Roads and Streets Book in PDF, ePub and Kindle
Author | : Timothy R. Neuman |
Publisher | : Transportation Research Board |
Total Pages | : 94 |
Release | : 2008 |
Genre | : Head-on collisions |
ISBN | : 0309099366 |
Download Guidance for Implementation of the AASHTO Strategic Highway Safety Plan Book in PDF, ePub and Kindle
Also available online via the Web pages of the TRB Cooperative Research Programs (www4.trb.org/trb/crp.nsf).