Route 139 rehabilitation : Pulaski Skyway contract 2 : final report.
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2017-06-01
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Edition:Draft Final Report, 01/01/2014 - 6/30/2017
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Abstract:After being outside and exposed to the elements during many years of service, concrete and the ; reinforcement within begins to deteriorate and corrode, which affects the performance of concrete ; bridge balustrades, especially those built in the 1930’s and 1940’s. Many of these old concrete ; balustrades are approaching the end of their design service lives. The Historic Preservation Office is ; trying to replace an important historical concrete balustrade on NJ Route 139/Hoboken Viaduct in ; Jersey City, Hudson County while retaining the historic appearance. At the same time, the new ; design must also satisfy the requirements of the target level crash test of AASHTO MASH TL-4 which ; was adopted by the FHWA on January 1, 2011. ; In this study, the research team provides the open-faced balustrade design that will meet the ; aesthetic and safety requirements of both HPO and FHWA. The team incorporated the following four ; components: (1) Work/Coordinate with NJDOT and HPO to further develop the initial design ; alternative along with plans, specifications, and other appropriate documents. (2) Develop a detailed ; Finite Element (FE) model using LS-DYNA Software for crash test simulation. (3) Conduct a ; parametric study using the developed FE model to optimize the initial design alternative and evaluate ; the effects of various parameters on the overall performance of the concrete balustrade. Based on ; the simulation results, the team modified, enhanced, and optimized the initial design alternative and ; is attempting to obtain FHWA’s approval of the optimized design alternative. The team has ; coordinated with the crash testing facility, Texas A&M Transportation Institute (TTI) for the actual ; crash testing at test level 4 (TL-4) in accordance with AASHTO MASH. ; The barrier has been successfully crash tested, and the computer simulations have been validated. ; The outcome of this research is an optimized open balustrade design that meets the design safety ; and aesthetic criteria for AASHTO and HPO, respectively, as well as the crash test requirements for ; FHWA. The optimized deign will not only enable the New Jersey Department of Transportation ; (NJDOT) to use the HPO approved design in the Route 139 Rehabilitation project, but also enable ; NJDOT to replace other similar historic barriers while avoiding, or at least mitigating, the adverse ; effects to similar historic bridges.
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Main Document Checksum:urn:sha-512:972df2bf067d15443accfaa233477e8710fe5cb0a7cf7b54b7ecdaf71a5d3d0adee928035a8db3f8a560f609ab1f991a66328c9c849ea81e83359e4efff920ba