高层剪力墙结构最大层间位移角的优化策略

Optimization scheme of maximum inter-story displacement angle in high-rise shear wall structure

一般情况下,最大层间位移角在结构方案调整下的演变模式与典型特性主要取决于其平动分量。两者的强相关性决定了优化最大层间位移角应从研究平动成分的优化策略入手。建立了最大层间平动位移角与结构布置方案的联系数学模型,并量化分析了两者的敏感性关联。研究结果表明:水平侧向荷载作用下,依据结构的侧移变形形态,合理选择最大层间平动位移角的配套优化调整方案,能辅助结构工程师进行高效决策;地震作用下,应优先采用保证结构刚度降幅低于自重降幅的优化调整方案,以合理优化结构造价。

Generally speaking,the evolution mode and typical characteristics of the maximum inter-story displacement angle under the adjustment of structural schemes are primarily determined by its translational component.The strong correlation between them determines that the optimization of the maximum inter-story displacement angle should start with optimizing the translational component.A mathematical model about the relationship between maximum inter-story translational displacement angle and structural configuration was build,and quantitatively analysis the sensitiveness of this relationship.The results of this research shows that under the action of horizontal lateral load,matching appropriate optimization adjustment scheme of the maximum inter-story translational displacement angle according to the lateral deformation form of the structure,can assist the structural engineer to make decision efficiently;under the action of earthquake,the optimization adjustment schemes which ensure the structural stiffness reduction is lower than the self-weight reduction should take precedence,is able to reasonably reduce the cost of construction.