A preliminary design aid for prestressed concrete bridge girders using LRFD

被引：0
|
作者：
Marquez, J. [1 ]
Jauregui, D. [1 ]
Weldon, B. [1 ]
Newtson, C. [1 ]
机构：
[1] New Mexico State Univ, Las Cruces, NM 88003 USA
来源：
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT AND LIFE EXTENSION | 2014年
关键词：
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The 2011 Precast/Prestressed Concrete Institute (PCI) Bridge Design Manual provides preliminary design charts for selecting the girder size and number of prestressing strands for a given span length and beam spacing but only for f'(c) = 55 MPa. The exclusive consideration of this girder concrete strength may limit the usefulness of the charts, particularly for ultra-high performance concrete (UHPC). Accordingly, this paper presents a general procedure to develop preliminary design charts based on the AASHTO LRFD Bridge Design Specifications for prestressed concrete bulb-tee girders considering service load stress limits and flexural strength. The procedure is illustrated for a BT-72 beam and finally, the impact of using UHPC in prestressed concrete bridge design is evaluated via the LRFD design charts.
引用
收藏
页码：2410 / 2415
页数：6
相关论文
共 50 条
12345