钢筋混凝土组合梁的ANSYS有限元程序验证

Verification on ANSYS Finite Element Program of Steel-Concrete Composite Beam

钢-混凝土组合梁是指钢梁和混凝土板通过剪力连接件连接形成整体共同工作的受弯构件,具有良好的受力性能。当前组合梁采用部分剪力连接设计但是滑移效应更为突出。本文主要针对有限元分析中所使用到的单元类型、材料属性做了基本介绍。验证所选用的有限元模型能够较好地反映混凝土和钢材的非线性性质以及混凝土板与钢梁之间的滑移性能。通过算例分析结果表明,使用ANSYS程序对组合梁进行有限元分析的方法是可行的。

Steel-concrete composite beam is a kind of flexural member composed by steel beam and concrete slab connecting together via shear connector with good mechanical performance. Current composite beam is with partial shear connection design but the slip effect is more prominent. This article made a basic introduction aiming at the unit types and material properties which were Used in the finite element analysis. The selected finite element model was verified to reflect the nonlinear nature of concrete and steel, and the slip behavior between concrete slab and steel girder perfectly. The case analysis results showed that the process of composite beam using ANSYS finite element analysis method was feasible.