(中土大地国际建筑设计有限公司， 石家庄 050046)

［摘要］某高层框架-剪力墙结构为竖向不规则结构，结构总高度67m，地上13层。设计时提出了两个方案，并对两个方案的整体抗震性能进行了分析和对比。方案一为减小11~13层剪力墙、框架柱截面，减少剪力墙数量，10层侧向刚度比满足规范要求；方案二为保持11~13层框架柱截面不变，减小剪力墙截面和数量，10层侧向刚度比不满足规范要求。采用SATWE和SAUSAGE软件对这两个方案分别进行了小震弹性分析和大震动力弹塑性分析。结果表明，方案一的楼层受剪承载力和层间位移角在10层存在突变，11~13层为薄弱楼层，鞭梢效应明显；方案二的楼层受剪承载力和层间位移角在10层无突变，无薄弱楼层，其整体抗震性能优于方案一；工程设计应采用方案二，抗震设计不应片面地消除不规则项，而应使结构的整体抗震性能更优。 

［关键词］竖向不规则； 刚度突变； 动力弹塑性分析； 抗震性能 

中图分类号：TU318 文献标识码：A文章编号：1002-848X(2021)11-0054-05

Structural scheme comparative analysis of a vertical irregularity building 

LI  Zhiqiang,  HAO  Guiqiang 

(Zhongtu International Architectural Design Co., Ltd., Shijiazhuang 050046， China) 

Abstract: A high-rise frame-shear wall structure is a vertical irregular building, with a total structure height of 67m, the total number of floors above ground is 13. Two schemes were proposed in the design, and the overall seismic performance of the two schemes was analyzed and compared. Scheme 1 is to reduce the section of the 11~13 storeys shear walls and frame columns, and reduce the number of shear walls. The lateral stiffness ratio of the 10 storey meets the specification requirements. Scheme 2 is to keep the 11~13 storeys frame column section unchanged and reduce cross-section and number of shear walls. The 10 storey lateral stiffness ratio does not meet the specification requirements. SATWE and SAUSAGE softwares were used to carry out small earthquake elastic analysis and large shock elastic-plastic analysis for these two schemes respectively.The results show that there is a sudden change in the storey shear capacity and the storey drift angle of Scheme 1 on the 10 storey, and the 11~13 storeys are weak floors, and the whiplash effect is obvious. The storey shear capacity and the storey drift angle of Scheme 2 on the 10 storey have no abrupt changes and no weak floors, its overall seismic performance is better than Scheme 1. The engineering design should adopt Scheme 2, and the seismic design should not eliminate irregularities one-sidedly, but should make the overall seismic performance of the structure better. 

Keywords:vertical irregularity； stiffness break； dynamic elastic-plastic analysis； seismic performance

作者简介：李志强，硕士，高级工程师，一级注册结构工程师，Email:54432313@qq.com。