(中国中元国际工程有限公司， 北京 100089)

摘要: 通过研究不同开洞区域的带 50%穿层柱的框架结构抗震性能，提出一种基于框架柱地震剪力分担比例的设计调整方法，并进行了调整前后结构弹性及弹塑性抗震性能的对比分析。 由于楼板开洞形成穿层柱，穿层柱抗侧刚度偏小，按照计算刚度分担的剪力偏小，一旦进入屈服，穿层柱弹塑性开展较快。 弹性设计阶段，应通过调整梁柱截面，满足小震作用下设计指标要求，使穿层柱承担的楼层剪力比例不低于 40%，宜控制在 45%左右，结构的弹塑性性能满足预期要求。 按照普通柱与穿层柱的地震剪力分担相当的原则，进行穿层柱的设计地震作用调整，提高了穿层柱的弹塑性承载力，增加了穿层柱在弹塑性阶段的抗侧贡献，改善了普通柱的破坏程度。

关键词: 穿层柱；框架结构；抗震设计；性能评估

中图分类号:TU318 文献标志码:A 文章编号:1002￣848X(2022)01￣0063￣07

DOI:10. 19701 / j. jzjg. 20200417

Study on seismic design of RC frame structure with cross￣floor columnsaccounting for 50% of total columns

WU Hanfu， FU Yangqiang， ZHANG Song， HAN Mingming

(China IPPR International Engineering Co.， Ltd.， Beijing 100089， China)

Abstract: By studying the seismic performance of the frame structure with cross￣floor columns accounting for 50% of totalcolumns in different opening areas， the design method based on the seismic shear sharing ratio of frame columns wasproposed， and the elastic and elastic￣plastic seismic performances of the structure before and after the design was comparedand analyzed. Because of the opening in the floor slab to form cross￣floor columns， the lateral stiffness of the cross￣floorcolumn is small， and so was the shear force shared. Once the cross￣floor column yields， the elastic￣plastic developmentspeed of the cross￣floor column is fast. In the elastic design stage， the beam column section should be designed to meet thedesign index requirements under the frequent earthquake， so that the floor shear ratio borne by the cross￣floor column is notless than 40% and controlled at about 45%， and the elastic￣plastic performance of the structure meets the expectedrequirements. According to the principle that the seismic shear force of the common column is equal to that of thecross￣layer column， the design earthquake action of the cross￣floor column was adjusted， which improves the elastic￣plasticbearing capacity， increases the seismic contribution of the cross￣floor column in the elastic￣plastic stage， and improves thedamage of the common column.

Keywords:cross￣floor column；frame structure；seismic design；performance evaluation

第一作者:吴汉福，学士，教授级高级工程师，一级注册结构工程师，主要从事结构设计及技术质量管理工作，Email:wuhanfu@ippr. net。

[引用本文] 吴汉福，付仰强，张松，等. 带 50%穿层柱的 RC 框架结构抗震设计研究[J]. 建筑结构，2022，52(1):63￣69. WU Hanfu，FU Yanqqiang，ZHANG Song，et al. Study on seismic design of RC frame structure with cross￣floorcolumns accounting for 50% of total columns[J]. Building Structure，2022，52(1):63￣69.