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原文传递 Calibration of AASHTO LRFD Concrete Bridge Design Specifications for Serviceability

题名：	Calibration of AASHTO LRFD Concrete Bridge Design Specifications for Serviceability
责任者：	National Academies of Sciences, Engineering, and Medicine; Transportation Research Board; National Cooperative Highway Research Program; Wagdy G. Wassef; John M. Kulicki; Hani Nassif; Dennis Mertz; Andrzej S. Nowak
关键词：	Transportation and Infrastructure — Bridges and Other Structures Transportation and Infrastructure — Design Transportation and Infrastructure — Maintenance and Preservation
学科分类：	暂无分类
摘要：	TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 201: Calibration of AASHTO LRFD Concrete Bridge Design Specifications for Serviceability explores calibrating the service limit states related to concrete bridges in the American Association of State Highway and Transportation Officials’ Load Resistance Factor Design Bridge Design Specifications (AASHTO LRFD). A limit state is defined as the boundary between acceptable and unacceptable performance of the structure or its component. According to the report, the limit states amenable to statistical calibration using the information currently available are cracking of reinforced concrete components, tensile stresses in concrete in prestressed concrete components, and fatigue of concrete and reinforcement The results of the work indicated that the main problem in calibrating the service limit states is the lack of clear consequences to exceeding the limit state and the ability to define more than one limit state function to address the same phenomenon. In the absence of reasons to increase or decrease the reliability inherent in the designs performed using the current specifications, the goal of the calibration was to help achieve uniform reliability with an average reliability similar to that inherent in current designs.
出版机构：	Transportation Research Board
提交日期：	2014
报告类型：	科技报告
资源类型：	科技（咨询、行业）报告
初始创建时间：	2014