三峡大学学报（自然科学版）2024，Vol.46Issue(1)：7-13,7.DOI:10.13393/j.cnki.issn.1672-948X.2024.01.002
钢-玄武岩混杂纤维混凝土压力管道有限元分析
Finite Element Analysis of Steel-Basalt Hybrid Fiber Concrete Pressure Pipeline
摘要
Abstract
The effects of mixed fiber soil mixed with steel and basalt on the bearing characteristics of the outer concrete of the pressure pipeline of hydropower station,the crack morphology after cracking,and the stress of steel lining and reinforcement were studied.Axial tensile tests were carried out on 10 groups of steel-basalt hybrid fiber reinforced concrete with different content,thus the uniaxial tensile stress-strain curves of steel-basalt hybrid fiber reinforced concrete were obtained.Taking the steel lined reinforced concrete pressure pipe-line structure of the Three Gorges Hydropower Station as an example,the influence of the addition of steel-basalt hybrid fiber on the stress of the steel,crack propagation and crack width of the concrete outside the pipeline was analyzed by using finite element software.Based on the large scale model test results of the pres-sure pipeline structure of the Three Gorges Hydropower Station,the stress of steel lining and steel reinforce-ment under two schemes of steel-lined reinforced steel-basalt hybrid fiber concrete pressure pipeline and con-ventional steel-lined reinforced concrete pressure pipeline was compared and analyzed.The results show that the overall stress of the pressure pipeline structure is more uniform after the addition of steel-basalt hybrid fi-ber,and the number of cracks and width of cracks in the outer concrete of the pipeline are also significantly reduced,and the stress of the steel lining and reinforcement of the pressure pipeline is significantly reduced.关键词
钢-玄武岩混杂纤维/压力管道/轴向拉伸试验/有限元分析Key words
steel-basalt hybrid fiber/pressure pipeline/axial tensile test/finite element analysis分类
建筑与水利引用本文复制引用
吴海林,陈刚,刘杰,周赟弢..钢-玄武岩混杂纤维混凝土压力管道有限元分析[J].三峡大学学报（自然科学版）,2024,46(1):7-13,7.基金项目
国家自然科学基金项目(51879146) （51879146）
