Year: 2024
Type: article
Abstract: This study presents an improvement in the TR63 model for predicting the shear strength of fibre-reinforced concrete beams, focusing on high-strength concrete reinforced with industrial and recycled steel fibres. The modified TR63 model incorporates critical parameters, including shear span ratio, fibre properties, and residual flexural strength, addressing limitations in existing design standards and offering a more accurate predictive framework. Statistical analysis of 164 experimental datasets demonstrates the model’s high predictive accuracy, with an average prediction-to-experiment ratio of 0.98 and a low standard deviation below 20% for most data points. The model’s conservative approach ensures safety redundancy, aligning with structural safety principles. Enhanced by regression analysis, the revised TR63 formulas bridge the gap between empirical observations and analytical predictions, making them well-suited to modern construction needs.
Authors: Xia Qin, Sakdirat Kaewunruen
Institution: University of Birmingham
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4412842292