Theoretical on flexural behavior of ultra high strength rebar reinforced engineered cementitious composites beam

被引：0
|
作者：
Li B.-X. [1 ,2 ]
Liao Q. [1 ,2 ]
Zhang Y.-P. [3 ,4 ]
Zhou L. [3 ,4 ]
Wei P. [3 ,4 ]
Liu K. [1 ,2 ]
机构：
[1] College of Architecture and Environment, Sichuan University, Chengdu
[2] Key Laboratory of Deep Underground Science and Engineering for Ministry of Education, Sichuan University, Chengdu
[3] Sichuan Provincial Architectural Design and Research Institute, Chengdu
[4] Sichuan Engineering and Technology Research Center of Architecture Industrialization, Chengdu
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2019年 / 49卷 / 04期
关键词：
Bearing capacity of cross section; Calculation theory; Engineered cementitious composites(ECC); Engineering mechanics; Flexural member; Ultra high strength rebar;
D O I：
10.13229/j.cnki.jdxbgxb20180174
中图分类号：
学科分类号：
摘要：
A new type of reinforced Engineered Cementitious Composites (ECC) beam was proposed with ultra high strength bars, named ultra high strength rebar reinforced ECC beam (UHSRRE). The tensile bearing capacity of ultra high strength reinforcement was expected to be efficiently utilized until the requirements of serviceability limit state were not met in UHSRRE. Theoretical analysis on the flexural behavior of UHSRRE was conducted. Three kinds of moments at different phases, including cracking moment, yielding moment and ultimate moment, were estimated with three fundamental hypotheses to calculate the flexural capacity. These hypotheses were the constitutive relationships of ECC and ultra high strength rebar, plane section assumption of mean strain, and the tensile stress of ECC in the tensile area of beam. In addition, the requirements of boundary and minimum reinforcement ratio were defined. These theoretical models were verified by the experimental results. © 2019, Jilin University Press. All right reserved.
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页码：1153 / 1161
页数：8
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