市政技术2025，Vol.43Issue(5)：102-108,7.DOI:10.19922/j.1009-7767.2025.05.102
钢抱箍法加固空心板梁桥的车振响应分析
Analysis of Vehicle Vibration Response of Hollow Slab Beam Bridge Strengthened by Steel Hoops Reinforcement Method
摘要
Abstract
To solve the common problems of hinge joint disease and single plate stress in hollow slab beam bridges,and improve the structural performance and durability of bridges,a steel hoops reinforcement scheme was proposed.A bridge project was selected as the experimental object to verify the scheme.The actual deformation data of the bridge was obtained by displacement monitoring before and after reinforcement;At the same time,finite element simulation was used to analyze the reinforcement effect from a theoretical perspective to achieve the evaluation of combination of theory and practice.The research results show that steel hoops method significantly reduced the peak strain at the bottom of the mid span,enhanced the transverse connection of the beam,and effectively improved the stress of the single plate.That the reinforcement effect of three hoops was better than that of two hoops was verified by further comparison,and the effect was the best at the mid span(L/2)position.Compared with the one at 3L/8 and 5L/8 positions,the reinforcement effect of the latter was weakened by about 10％.Therefore,the steel hoops method can significantly improve the overall integrity and durability of bridges.The mid span position is recommended to be preferred selection for reinforcement in practical engineering to fully utilize the advantages and achieve the best re-inforcement effect.This research findings can provide a novel approach and methodology for the strengthening of similar bridges.关键词
空心板梁桥/铰接缝病害/单板受力/钢抱箍法加固/位移监测/有限元模拟Key words
hollow slab beam bridge/hinge joint disease/single plate stress/steel hoops reinforcement method/displacement monitoring/finite element simulation分类
交通运输引用本文复制引用
葛继平,龚升,赵世壮..钢抱箍法加固空心板梁桥的车振响应分析[J].市政技术,2025,43(5):102-108,7.基金项目
上海市科委-预制桥梁智能建造成套技术(21002420100) （21002420100）
