南京工业大学学报（自然科学版）2025，Vol.47Issue(3)：308-317,10.DOI:10.3969/j.issn.1671-7627.2025.03.010
空心板桥铰缝钢筋优化及受力性能研究
Research on reinforcement optimization and mechanical performance of hinge joints in hollow slab bridges
摘要
Abstract
Focusing on the issue of hinge joint cracking in hollow slab bridges,this study aims to enhance the mechanical performance and construction quality of hinge joints.An optimized reinforcement scheme and a formwork-free tension-resistant hinge joint structure were proposed.The mechanical performance of hinge joints before and after optimization was investigated through experimental research and numerical simulations.The results showed that:the bending resistance of optimized hinge joints remained comparable to the original design,with a cracking load increasing by 11.5％compared to the original design,while the shear performance remained comparable to the original design.The stress levels of the hinge joint reinforcement before and after optimization remained largely consistent,and the interface connection reinforcement played a positive role in enhancing the collaborative performance of new and old concrete.The grouted L-shaped steel plate significantly improved the residual stiffness after hinge joint cracking.In addition,without compromising the mechanical performance of the hinge joints,the optimized design enhanced concrete pouring and reinforcement construction quality,thereby improving construction efficiency and reducing the project duration.关键词
空心板桥/铰缝开裂/钢筋优化/免吊模勾缝Key words
hollow slab bridge/hinge joint cracking/reinforcement optimization/formwork-free joint grouting分类
交通运输引用本文复制引用
胡松明,贾文进,陈冲,夏刘召,王阳春,刘朵,吴大俊,李雪红..空心板桥铰缝钢筋优化及受力性能研究[J].南京工业大学学报（自然科学版）,2025,47(3):308-317,10.基金项目
国家自然科学基金(52178486) （52178486）
