新增钢梁与混凝土结构连接节点的有限元分析

FINITE ELEMENT ANALYSIS OF THE CONNECTION BETWEEN ADDED STEEL GIRDERS AND EXISTING CONCRETE STRUCTURES

混凝土结构改造工程中经常采用钢结构形式,新增钢梁与原混凝土结构的连接节点十分常见。新增钢梁与原混凝土结构连接节点的性能影响到新增结构与原混凝土结构之间的整体工作情况和新增构件的受力状态。对新增钢梁与混凝土构件之间常用的连接节点通过有限元计算,对其受力性能进行比较详尽的分析,包括连接节点的刚度、锚固钢板的变形、接触应力、植筋的受力等,并提出了工程应用建议,对该类工程应用具有重要的参考价值。

Steel structures are often used in the reconstruction project of concrete structures. The connection between added steel girders and existing concrete structures are commonly encountered. The behavior of the connection affects the global working state of the joint and the stress status of added members. Finite element calculation and analysis were conducted in details on the connection joint in common use. The connection stiffness, deformation of steel anchoring plate, contact stress and the stress state of bonded rebar were analyzed and suggestions on application in projects were provided, which may be a important reference for similar projects.