【摘要】 基于OpenSees有限元软件编制了钢-混凝土组合梁纤维单元函数模块,与试验对比结果表明,该单元可以很好的模拟组合梁钢框架在地震往复荷载作用下的受力性能;以试验框架为基础,通过改变混凝土翼板厚度、配筋率、型钢梁高度、混凝土强度和钢材强度等影响因素,研究其对组合梁钢框架抗震性能的影响。研究结果表明:钢梁高度对钢框架的抗震性能影响最大,混凝土板厚度和钢材强度等级影响次之,配筋率和混凝土强度等级对结构的抗震性能影响很小。更多还原

【Abstract】 A steel-concrete composite fiber beam model is developed in this paper based on Open Sees. The model is verified through the experiment showing that the fiber beam model possesses good accuracy and can be used to perform global elasto- plastic analysis of steel- concrete composite frames subjected to the cyclic lateral loads. The parameters affecting the Seismic behavior of steel- concrete composite frames are analyzed,including the thickness of concrete slab,reinforcement ratio,steel beam height,the strength of concrete and steel strength,etc. The results show that the beam height has the greatest influence on the seismic performance of steel framework,concrete slab thickness and steel strength grade greater on the seismic performance of steel framework,reinforcement ratio,concrete strength grade have little impact on the seismic performance of structure.更多还原