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Development of Non-proprietary Prefabricated Solutions for Concrete Barrier Systems for Accelerated Bridge Construction

项目名称：	Development of Non-proprietary Prefabricated Solutions for Concrete Barrier Systems for Accelerated Bridge Construction
摘要：	A combination of limited prefabricated barrier systems and the new Manual for Assessing Safety Hardware (MASH) crash testing requirements is limiting the full adoption of accelerated bridge construction (ABC) techniques by state departments of transportation (DOTs). Precast concrete barriers were previously crash tested to requirements levels published in NCHRP Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features. Some of these barriers were evaluated for test level (TL) 3. However, state DOTs are moving to higher level designs with TL 4 becoming more common and some state DOTs are moving to TL 5. An ongoing pooled-fund research project TPF-5(367): Evaluation and Full Scale Testing of Concrete Prefabricated Bridge Rails (https://www.pooledfund.org/Details/Study/619) is MASH crash-testing a precast barrier system. However, with different agencies using different barriers (F shape, single slope, etc.), a need exists for additional barrier system designs that meet the current MASH barrier design/testing provisions. In addition to accommodating accelerated construction schedule, the desired prefabricated barrier systems need to include durable connection details. The objective of this research is to identify, develop, and MASH crash-test durable prefabricated versions of existing MASH or NCHRP Report 350 compliant barriers.
状态：	Proposed
资金：	900000
资助组织：	National Cooperative Highway Research Program；American Association of State Highway and Transportation Officials (AASHTO)；Federal Highway Administration
项目负责人：	Abu-Hawash, Ahmad
开始时间：	20220207
主题领域：	Bridges and other structures；Construction；Highways；Materials；Safety and Human Factors