混合梁桥钢-混结合部的应用及关键技术

Application and Key Technology of Steel-Concrete Joint of Hybrid Girder Bridge

混合结构即是指结构的构件采用了不同的材料,结构层次由钢结构和混凝土结构混合使用构成。但是钢梁和混凝土梁由于在刚度上存在较大差异,钢-混结合部若设计不当,极易引发局部应力集中或刚度过渡不平顺等问题。对此,本文首先就混合梁在我国桥梁中的应用进行阐述,并对目前混合梁桥钢-混结合部的构造特点进行分析,并就钢-混结合部关键技术进行探究分析。

Hybrid structure refers to the components of the structure made of different materials,and the structure level is composed of steel structure and concrete structure.However,due to the large difference in stiffness between steel beams and concrete beams,if the steel-concrete joint is not properly designed,it is easy to cause problems such as local stress concentration or uneven stiffness transition.In this regard,this article first expounds the application of hybrid girder in bridges in China,analyzes the structural characteristics of the steel-concrete joint of the current hybrid girder bridge,and explores and analyzes the key technologies of the steel-concrete joint.