东南大学学报（自然科学版）2025，Vol.55Issue(4)：965-974,10.DOI:10.3969/j.issn.1001-0505.2025.04.005
节段预制拼装桥梁接缝齿型配筋剪力键抗剪性能研究
Study on shear performance of toothed reinforcement shear keys in joints of precast segmental bridges
摘要
Abstract
The shear performance of shear keys with rebars and the influence of rebar shapes were investi-gated.Based on the existing test results,three-dimensional numerical simulation models of concrete joints were created and verified.The influence of reinforcement forms and joint types on the shear performance of both joints was revealed.The results show that reinforced key has no obvious effect on the failure load of joints.The shear capacities of the dry and epoxy joints with a U-shaped reinforced key were about 7.0%and 14.6%higher than those with the plain concrete key,respectively.Reinforcement forms can affect the failure modes of joints.The cracks emerge on both the male and female part of joints with the reinforced key.The evaluation of existing calculation formulas based on the simulation results exhibits that when the contribution of reinforcement is taken into account,partial formulas can accurately simulate the shear capacity of joints with the reinforced key.关键词
节段预制拼装桥梁/干接缝/胶接缝/抗剪承载力/键齿配筋Key words
precast segmental bridge/dry joint/epoxy joint/shear capacity/reinforced key分类
交通工程引用本文复制引用
张凯迪,贾俊峰,周述美,程寿山,杜修力..节段预制拼装桥梁接缝齿型配筋剪力键抗剪性能研究[J].东南大学学报（自然科学版）,2025,55(4):965-974,10.基金项目
国家自然科学基金资助项目(51778024) （51778024）
北京市自然科学基金资助项目(8202002) （8202002）
旧桥检测与加固技术交通行业重点实验室(北京)开放课题资助项目(2020-JQKFKT-7). （北京）
