【作者】 马良；

【导师】 李启才；

【作者基本信息】 苏州科技学院 ， 结构工程， 2010， 硕士

【摘要】 利用钢梁的拼接区消耗地震能量是提高结构抗震性能的手段之一,近年来人们对这种耗能方式的研究较多。本文首次对带有楼板的钢框架中钢梁拼接节点的耗能机理作了试验和有限元模拟研究。本文试验共有3个试件,进行了拼接节点在恒定轴力下往复加载试验,研究了拼接节点的滞回性能、耗能能力、延性、强度退化和刚度退化等特征,重点研究了楼板对钢梁高强螺栓拼接节点耗能的影响。试验研究表明:考虑混凝土板影响后,试件刚度和承载力提高;试件具有较好的延性;通过对不同配筋率和混凝土板厚度的试件研究发现,配筋率越高,混凝土板厚度越大,试件刚度和承载力越大;混凝土板和钢梁之间的抗剪连接性能对钢梁拼接节点的耗能性能有一定影响。同时对节点运用有限元ANSYS软件进行了三维非线性有限元分析,有限元分析结果与试验结果较为吻合。本文最后提出了利用钢梁拼接区耗能的钢梁拼接节点的设计方法。更多还原

【Abstract】 Using steel beam’s splice to dissipate seismic energy is one of the means improve the structural seismic performance. In recent years, a lot of research on this kind of energy dissipation has been carried out. In this article, for the first time, experiment test and finite element simulation of high-strength bolted splice in frame structure with concrete slab considered was done to study the energy dissipation performance.The three speciments are designed and tested under the constant axis force and reverse loads and research the hysteretic behavior, energy dissipation capacity, ductility, strength degeneration and rigidity degeneration; particular attention was paid to energy dissipation principles of high-strength bolted splice using slotted holes. The experiments and analysis indicate that the joint patterns of concrete slab considered have enough carrying capacity, better rigidity and energy dissipation behaviors. The higher reinforcement ratio and the thicker concrete slab thickness can improve rigidity and capacity. Shear connection performance affect energy dissipation capacity of the high-strength bolted splice using slotted holes.The nonlinear finite element analysis is done to the joints using software ANSYS at the same time. The results of finite element analysis coincide to the results of the experiments.Finally, design recommendations on how to utilize beam’s splice to dissipate seismic energy is given out.更多还原