期刊
COMPOSITES PART B-ENGINEERING
卷 45, 期 1, 页码 215-231出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.09.021
关键词
Fibers; Polymer-matrix composites (PMCs); Strength; Analytical modeling; Torsion
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2012R1A1A2002444]
- National Research Foundation of Korea [2012R1A1A2002444] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Steel-fiber-reinforced concrete (SFRC) is an efficient cement-based composite material that can compensate for the drawbacks of the material properties of conventional concrete and has better structural performances than conventional concrete. It can improve torsional behavior as well as flexural and shear behavior. However, analysis of the torsional behavior of SFRC members is quite complicated because force equilibrium and strain compatibility in a three-dimensional space should be satisfied. Accordingly, many studies proposed empirical evaluation equations for the torsional strength of SFRC members based on experimental results. Therefore, this study derived a constitutive model of SFRC in tension, which greatly influences the torsional behavior of SFRC, based on the test results of SFRC shear panels under biaxial stress, and this tensile behavior model was introduced to a fixed-angle softened-truss model. A theoretical evaluation model based on the modified fixed-angle model for torsional behavior of SFRC was developed, and the performance of the analytical model was also evaluated compared to test results obtained from literature. (c) 2012 Elsevier Ltd. All rights reserved.
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