摘要
剪力键是影响节段预制拼装混凝土桥梁结构力学性能和耐久性的重要部位。根据国内外节段预制拼装桥梁剪力键力学性能相关研究,总结了影响节段预制拼装桥梁键齿接缝抗剪性能的因素,包括剪力键面积、键齿数量、键齿高度、形式及布置方案等;阐述了国内外键齿接缝力学性能的研究成果,包括键齿试验破坏模式和裂缝发展规律、抗剪承载力公式的理论推导和有限元模拟结果的分析等,可为接缝上键齿的设计、接缝整体的承载能力优化提供一定的参考。
Shear keys are important parts that affect the mechanical properties and durability of segmental precast assembled concrete bridge structures.According to the relevant research at home and abroad on the mechanical properties of shear keys of the segmental precast assembled bridges,this paper summarizes the factors affecting the shear performance of the key teeth joints of the segmental precast assembled bridge,including the area of shear key,the number of key teeth,the height of key teeth,the form and the layout scheme of shear key.This paper also expounds the research results of the mechanical properties of the key teeth joints at home and abroad,including the failure mode and crack development law of the key teeth test,the theoretical derivation of the shear bearing capacity formula and the analysis of the finite element simulation results,which can provide a certain reference for the design of joint key teeth and the optimization of the overall bearing capacity of joints.
作者
冯晨鹏
姜文恺
孙星
何伟
FENG Chen-peng;JIANG Wen-kai;SUN Xing;HE Wei(North China University of Water Resources&Electric Power,Zhengzhou 450045,China;China Railway Fourth Survey&Design Institute Group Co.,Ltd.,Wuhan 430063,China;China Railway 16th Bureau Group Co.,Ltd.,Chaoyang District,Beijing 100018,China)
出处
《河南城建学院学报》
CAS
2023年第2期59-64,共6页
Journal of Henan University of Urban Construction
基金
河南省科技攻关计划项目(212102310940)
中铁十六局集团科技研发项目(K2020-7B)
铁四院科技研究开发项目(2020K161)。
关键词
剪力键
节段预制
混凝土桥
干接缝
胶接缝
shear keys
segmental precast
concrete bridges
dry joints
glue joints
