基于拓扑优化技术的高性能剪力墙优化设计

High Performance Shear Wall Design Based on Topology Optimization

剪力墙是高层建筑物重要的结构构件。剪力墙主要承受竖向力和水平作用力,其边缘构件的底部混凝土由于拉力作用容易开裂失效,从而出现局部损伤,导致整片墙过早的失去工作能力。为了使剪力墙有更好的工作性能和更优的材料布置,基于拓扑优化理论对钢筋混凝土剪力墙进行优化设计。首先应用Hyperworks软件中的拓扑优化程序对传统剪力墙进行优化分析,根据计算的结果,进行混凝土剪力墙钢筋笼的重新设计,然后利用有限元软件ABAQUS对钢筋笼优化布置之后的剪力墙模型进行竖向荷载和水平荷载共同作用下的推覆模拟分析。通过剪力墙优化前后的抗震性能有限元模拟分析对比结果表明,根据拓扑优化结果重新设计的剪力墙表现出更好的抗震性能,研究结果对类似结构设计具有参考价值。

Shear wall is an important part of high-rise buildings.The shear wall usually bear vertical and horizontal forces,so the damage zone often occurs in the bottom of the edge of the shear wall due to the tension.Due to local damage,the work ability of the shear wall is lost too early,so insufficient resistance and material wasting phenomenon occur.In order to let the shear wall have a better performance,we use topology optimization to optimize shear wall by Hyperworks,and optimize the steel skeleton of shear wall based on the result of topology optimization.Then use finite element software to do push-over on shear wall.By contrast push-over curves,the optimized shear wall exhibit better performance,and there are reference values in similar structure design.