预制混凝土节段桥梁剪力键抗剪强度影响因素研究进展及展望  

On the Progress in and the Prospect of the Studies of Influential Factors of the Shear Strength of Shear Keys in Precast Concrete Segmental Bridges

作　　者：王海良 李搏瀚 黄欣[4] WANG Hailiang;LI Bohan;HUANG Xin(College of Civil Engineering,Tianjin University of Municipal Construction,Tianjin 300384,China;Tianjin Key Lab.for the Protection and Reinforcement of Civil Structures,Tianjin 300384,China;National and Local Joint Engineering Research Center for Resource Utilizing Technology for Solid Wastes of Construction,Tianjin 300384,China;Eighteenth Bureau Group of China Railway,Tianjin 300222,China)

机构地区：[1]天津城建大学土木工程学院,天津300384 [2]天津市建筑结构防护与加固重点实验室,天津300384 [3]建筑固体废弃物资源化利用技术国家地方联合工程研究中心,天津300384 [4]中铁十八局集团有限公司,天津300222

出　　处：《国防交通工程与技术》2020年第6期1-8,共8页Traffic Engineering and Technology for National Defence

基　　金：天津市科委轨道交通重大专项课题(18ZXGDGX00050)。

摘　　要：由于预制混凝土节段桥梁具有的优点,这种结构形式在桥梁工程中得到日益广泛应用;节段间接缝是结构薄弱部分,其受力行为是影响桥梁整体受力主要因素之一;剪力键通常设置于接缝部位,是桥梁节段间传递剪力重要构造,其抗剪强度直接关系到整个桥梁安全使用、耐久性。总结了目前国内外学者所做影响剪力键抗剪强度因素研究基础上,针对目前行业发展需求,对预制混凝土节段剪力键抗剪强度应开展的研究内容提出建议,以期为预制拼装混凝土桥梁的推广应用起到借鉴作用。Owing to the advantages of the precast concrete segmental bridge,this type of structure is increasingly used in bridge projects.However,the joints between two segments are the weak part of the structure,whose mechanical behavior is one of the main influential factors that affect the mechanical behavior of the whole bridge.The shear key is usually located at the joint,which is an important structure for transferring the shear force between bridge segments.Its shear strength is directly related to the safety and durability of the bridge.Upon the basis of summing up foreign scholars'studies of the shear-strength-affecting factors of the shear keys,aiming at the developing requirements of the trade right at present,put forward in the present paper are some suggestions on the research content of the shear strength of the shear keys that needs to be carried out.The paper is expected to help the popularization and application of precast concrete segmental bridges.

关 键 词：预制混凝土节段桥梁 剪力键 抗剪强度 影响因素 

分 类 号：U441[建筑科学—桥梁与隧道工程]