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原文传递 Durability Assessment of Prefabricated Bridge Elements and Systems.

题名：	Durability Assessment of Prefabricated Bridge Elements and Systems.
作者：	Head, M.; Efe, S.; Grose, S.; Drumgoole, J.; Lajubutu, O.; Wright, R.; Hansboro, T.
关键词：	Maryland(State), Prefabricated bridge elements systems, Inspection criteria, Work zone analysis, Durability assessment, Database, Camber, Crack width, Crack length, Long-term performance, Work flow diagRAMS, Critical data, Data collections, Data tracking, Transportation planning
摘要：	This study aims to address some of the concerns related to implementation of prefabricated bridge elements and systems (PBES) and accelerated bridge construction (ABC) in Maryland, where some barriers included assessment of the quality and durability (long-term performance). While many states are considering the use of PBES/ABC projects to shorten onsite construction time, work zone and safety factors, and user costs, the quality and durability of PBES units produced for long-term benefit is of concern to the Maryland State Highway Administration (SHA). Incomplete and noncompliant inspection processes and nonexistent waste management procedures not only affect the quality and durability of PBES units produced but can also drive costs and waste time. As such, this project focuses on the evaluation of quality assurance/quality control (QA/QC) processes during pre-production, fabrication, evaluation and transportation and storage of the PBES units. To aid in the evaluation process, work flow diagrams and decision framework were developed based on inspection checklists and incorporated into a database to guide precast plants during pre-production, fabrication, evaluation and transportation and storage phases of the PBES. The database, created in Microsoft Excel, can be used as a tool to automate the documentation process needed to ensure quality and durable products. Specific data entries such as camber measurements and crack widths/lengths are included to aid in quality processing of critical data on products, and provide a consistent means for data collection and tracking of SHA projects to help yield high quality PBES products. A link to the user-friendly, interactive database is provided within this report.
总页数：	Head, M.; Efe, S.; Grose, S.; Drumgoole, J.; Lajubutu, O.; Wright, R.; Hansboro, T.
报告类型：	科技报告