辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(2)：202-210,9.DOI:10.11956/j.issn.1008-0562.20240123
预应力UHPC加固损伤梁抗弯性能参数分析与优化布设研究
Parameter analysis and optimized deployment study of flexural performance of prestressed UHPC-reinforced damaged beams
摘要
Abstract
To optimize the layout of ultra-high-performance concrete(UHPC)reinforcement layer and improve its performance,numerical simulation and experimental comparison methods were used to study the stress performance of damaged RC hollow slab beams reinforced with unreinforced UHPC,ordinary reinforced UHPC,and prestressed UHPC under different reinforcement states,as well as the influence of reinforcement layer thickness,length,and prestress on the reinforcement effect of the beam.The research results show that compared with ordinary reinforced UHPC reinforcement,prestressed UHPC reinforcement can improve the stress state of the beam,effectively restrain the development of cracks,greatly improve the bearing capacity and stiffness of the reinforced hollow slab beam,and significantly increase the cracking load,yield load,and bending ultimate bearing capacity of the beam.The reinforcement protection is more efficient and durable.The changes in parameters such as thickness,length,and prestress of the reinforcement layer are compared and analyzed,and suggestions for optimizing the reinforcement layer are proposed.The research results can provide reference for the design of UHPC reinforced damaged beams.关键词
预应力/超高性能混凝土/混凝土损伤模型/加固技术/抗弯性能/梁体Key words
prestressed/ultra-high-performance concrete/concrete damage model/reinforcement technology/flexural behavior/beam分类
土木建筑引用本文复制引用
黄颖,王黎园..预应力UHPC加固损伤梁抗弯性能参数分析与优化布设研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(2):202-210,9.基金项目
国家自然科学基金项目(51878172) （51878172）
福建省教育厅应用技术协同创新中心项目(闽教科[2018]105号) （闽教科[2018]105号）
福建省交通运输科技计划一般科技项目执行计划(YB202405) （YB202405）
