山东建筑大学学报2025，Vol.40Issue(3)：26-33,69,9.DOI:10.12077/sdjz.2025.03.004
钢纤维再生混凝土梁受弯性能细观有限元模拟分析
Meso-finite element simulation of flexural behavior of steel fiber recycled concrete beams
摘要
Abstract
The flexural performance of beams is an important factor affecting the safety of structures.In this paper,the recycled concrete beam was designed with the replacement rate of recycled aggregate,reinforcement ratio,fiber content and loading rate as the main parameters,and a three-dimensional meso-model was established based on Python language and Abaqus software to simulate and analyze its bending performance.The results indicate that the bending damage pattern of recycled concrete beams is similar to that of ordinary concrete beams.With the increase of the regenerated aggregate replacement rate,the beam bearing capacity showed an obvious downward trend,decreasing by 1.4%to 11.6%.With the increase of reinforcement rate,the plastic damage degree of the concrete at the bottom of the beam decreases,and the bearing capacity of the beam could be increased by 20%at the limit state.Steel fiber content less than 1.5%has minimal effect on beam bearing capacity.With the increase of loading rate,the ultimate bearing capacity of the beam increases obviously.关键词
钢纤维/再生混凝土梁/受弯性能/细观有限元模拟/参数分析Key words
steel fiber/recycled concrete beam/flexural property/mesoscopic finite simulation/parameter analysis分类
土木建筑引用本文复制引用
刘春阳,丁吴寒,苏静,高英棋,黄潍雨,李新桐..钢纤维再生混凝土梁受弯性能细观有限元模拟分析[J].山东建筑大学学报,2025,40(3):26-33,69,9.基金项目
国家自然科学基金项目(52278507) （52278507）
山东省自然科学基金项目(ZR2022ME160) （ZR2022ME160）
