Fracture modelling of steel fibre reinforced concrete structures by the lumped damage mechanics: Application in precast tunnel segments

被引：11
作者：
Oliveira, Joao M. J. [1 ]
Vieira, Camila S. [1 ]
Silva, Matheus F. A. [2 ]
Amorim, David L. N. F. [1 ,3 ,4 ]
机构：
[1] Univ Fed Sergipe, Postgrad Programme Civil Engn, Lab Math Modelling Civil Engn, Sao Cristovao, Sergipe, Brazil
[2] Fed Rural Univ Semiarid Reg, Pau Ferros, Pau dos Ferros, RN, Brazil
[3] Univ Fed Alagoas, Postgrad Programme Civil Engn, Maceio, Alagoas, Brazil
[4] Ave Marechal Rondon Jardim s n Rosa Elze, BR-49100000 Sao Cristovao, Sergipe, Brazil
来源：
ENGINEERING STRUCTURES | 2023年 / 278卷
关键词：
Steel fibre reinforced concrete; Fracture modelling; Lumped damage mechanics; Plastic hinge; Precast tunnel segments; FICTITIOUS CRACK-PROPAGATION; DESIGN;
D O I：
10.1016/j.engstruct.2022.115487
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A lumped damage model for steel fibre reinforced concrete (SFRC) is proposed in this paper. In the proposed model, the inelastic phenomena are lumped at hinges, where the damage variable accounts for concrete cracking and the plastic rotation represents the permanent deformation. Such lumped damage model was obtained by a flexure experiment and then applied to two precast tunnel segments. The results show that the proposed model is quite accurate for the SFRC tunnel segments analysed in this paper.
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页数：10
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