【摘要】 钢柱脚的设计在钢结构设计中起着非常重要的作用,通过大型分析软件ANSYS对钢管柱脚进行了非线性有限元数值模拟分析,得出钢管柱在不同壁厚、不同轴压比下的断裂性能和恢复力特性以及两者之间的关系,结果表明:(1)钢管柱最容易开裂的部位位于柱底部;(2)随着壁厚的逐渐增加,钢管柱抗开裂能力逐渐增强;(3)轴压比对钢管柱断裂的影响相对很小,但对开裂后构件的耗能性能影响较大;(4)随着抗断裂能力的提高,构件的抗震性能提高明显。更多还原

【Abstract】 The design of steel column base plays a very important role in steel structure design.Through large-scale analysis software ANSYS,this paper analyzed the steel column base by finite element numerical simulation nonlinear analysis,and discussed the fracture behavior and restoring force characteristics of steel pipe column in different thickness and axial compression ratio,and the link between the two.The results show that:(1) The section of most likely break focus on the bottom of vertical load plane in the middle of the steel column base;(2) With the increase of thickness,anti-cracking ability gradually increased;(3) Axial compression ratio of the specimen has little effect for anti-cracking ability;(4) With the increase of anti-cracking ability,the seismic behavior of specimens gets heightened.更多还原