详情

原文传递 Shear behavior of high-strength self-consolidating concrete in Nebraska University bridge girders

题名：	Shear behavior of high-strength self-consolidating concrete in Nebraska University bridge girders
正文语种：	英文
作者：	Alex Griffin;John J. Myers
作者单位：	Missouri University
关键词：	Aggregate;bridge;cracking;finite element analysis;finite element model;fly ash;full-scale;high-strength concrete;NU girder;SCC;self-consolidating concrete;shear strength
摘要：	Current reinforced and prestressed concrete design equations were developed for conventional concrete elements. Self-consolidating concrete (SCC) typically contains a lower coarse aggregate content and size than conventional concrete, which potentially hinders the aggregate interlock contribution to a concrete's shear strength. Thus, shear design equations must be verified with SCC mixtures. Two full-scale precast, prestressed concrete Nebraska University girders were tested to assess the shear behavior of high-strength SCC. Both girders were designed to permit two tests on each girder, both with and without shear reinforcement. Ultimate shear loads and crack patterns were documented and compared with code estimates, finite element models, and a col-lected prestressed concrete shear database. The girders exceeded the predicted factored concrete shear resistance from current U.S. design standards. However, additional test data are required to identify any distinguishable trends of the shear strength of SCC mixtures.
出版日期：	2016.05-06
出版年：	2016
期刊名称：	PCI-Prestressed Concrete Institute Journal
卷：	Vol.61
期：	No.03
页码：	31-46