Results 21 to 30 of about 1,142 (126)

Reliability analysis of strut-and-tie models for the design of deep beams according to NBR 6118 (2023) [PDF]

Revista IBRACON de Estruturas e Materiais
The strut-and-tie method (STM) applied in the structural design of deep beams is a semi-probabilistic method, that does not take directly into account both the uncertainties associated with the variables involved and those inherent in the calculation ...
Paulo Henrique Staciarini, Roberto Caldas de Andrade Pinto, Wellison José de Santana Gomes   +2 more
doaj   +1 more source

The strut-and-tie models in reinforced concrete structures analysed by a numerical technique

Revista IBRACON de Estruturas e Materiais
The strut-and-tie models are appropriate to design and to detail certain types of structural elements in reinforced concrete and in regions of stress concentrations, called "D" regions.
V. S. Almeida, H. L. Simonetti, L. Oliveira Neto   +2 more
doaj   +1 more source

Analysis of the structural behavior of beam-column joints in reinforced concrete frames considering bending towards the reduced side of the cross section [PDF]

Revista IBRACON de Estruturas e Materiais
The beam-column joints are called discontinuous regions and, therefore, could be designed by the strut and tie method. In beam-column joints where the bending plane coincides with the column's smaller dimension, the bending moments associated with the ...
Carolina Grossi de Paiva, Diôgo Silva de Oliveira, Camila Spagnol de Faria, João Vitor Fioresi Altoé, José Carlos Lopes Ribeiro   +4 more
doaj   +1 more source

Investigation on shear behavior of reinforced concrete deep beams without shear reinforcement strengthened with fiber reinforced polymers

Case Studies in Construction Materials, 2022
Shear failure is an undesirable type of failure in terms of structural safety. Particularly, reinforced concrete (RC) deep beams without shear reinforcement are vulnurable to shear failure. In order to improve the shear behavior of such beams, externally
Hasan Cem Akkaya, Cem Aydemir, Guray Arslan   +2 more
doaj   +1 more source

Numerical analysis of reinforced concrete dapped-end beams [PDF]

Revista IBRACON de Estruturas e Materiais
The reinforced concrete dapped-ends present in beams, being regions of discontinuity, require non-trivial models for their analysis and design, such as the strut-and-tie model, the shear-friction model, and the finite element method.
Rejane Martins Fernandes Canha, Levy Pablo Silva Garcia, Fábio Augusto Silva Santos   +2 more
doaj   +1 more source

Reinforced concrete corbels strengthened with external prestressing

Revista IBRACON de Estruturas e Materiais, 2019
Reinforced concrete structures may demand, throughout their lifetime, the increase of the capacity load due to eventual changes in the load configuration. In this context, corbels could be considered structural elements which present great challenges for
R. M. ROMANICHEN, R. A. SOUZA
doaj   +2 more sources

String Figuring young children's perspectives of quality in English early childhood education and care

British Educational Research Journal, EarlyView.
Abstract Quality in early childhood education and care (ECEC) is a contested concept and has generally been conceptualised by inter‐related indicators such as staff qualifications, educational environment, policy or child‐to‐staff ratios. There has been a more limited emphasis on how young children might perceive and experience quality.
Nikki Fairchild, Éva Mikuska
wiley   +1 more source

Testing and modeling of deep beams strengthened with NSM-CFRP reinforcement around cutouts

Case Studies in Construction Materials, 2021
The behavior of reinforced concrete (RC) deep beams strengthened with near-surface-mounted carbon fiber-reinforced polymer (NSM-CFRP) reinforcement around cutouts is examined in this study.
Moustafa Mansour, Tamer El-Maaddawy
doaj   +1 more source

Nacre‐inspired layered composite with excellent mechanical support and osteogenic potential for cervical interbody cage

BMEMat, EarlyView.
The cervical interbody cage needs to take both biomechanical and biological requirements into account. Here, a new‐style degradable, multicomponent, and bioinspired nacre‐like cervical interbody cage composite, which exhibits promising mechanical‐support‐related behavior and osteogenesis‐related potential, is designed and prepared.
Xiu‐Wu Guo, Shao‐Meng Wen, Tian‐Yu Xing, Yang Zhou, Chun‐Xin Wang, Chang Ge, Si‐Ming Chen, Wen‐Zhi Zhang, Shu‐Hong Yu   +8 more
wiley   +1 more source

Preclinical Efficacy and Safety Evaluation of a Novel Controlled‐Expansion ePTFE‐Covered TIPS Stent in a Swine Model

Portal Hypertension &Cirrhosis, EarlyView.
This preclinical study evaluated a novel controlled‐expansion expanded polytetrafluoroethylene (ePTFE)‐covered transjugular intrahepatic portosystemic shunt (TIPS) stent in 11 swine, demonstrating 100% technical success, excellent deployability, and durable 6‐month angiographic patency without thrombosis, migration, fracture, or device‐related toxicity.
Yi Xiang, Qi Zhang, Chuan Liu, Jiawei Zhang, Qingqiao Zhang, Changsheng Shi, Chunze Zhou, Yudong Zhang, Hongliang He, Hao Xie, Hui Shi, Haijian Guo, Wenjing Liu, Muqing Lin, Huajie Yu, Xiaolong Qi   +15 more
wiley   +1 more source