(1 四川省建筑设计研究院有限公司, 成都 610095; 2 四川省建筑设计研究院有限公司复杂结构设计研究中心, 成都 610095; 3 成都惟尚建筑设计有限公司, 成都 610096)

摘要: 某办公楼为抗震设防烈度 7 度(0. 1g)区 L 形平面多次退台框架-剪力墙超限高层建筑,其性能目标为 C.对此 L 形平面办公楼的有退台与无退台结构进行了对比研究,两者的扭转及振动特性完全不一致,对控制该办公楼的扭转提出了一些建议. 本办公楼为较矮高层且核心筒集中布置的框架-剪力墙结构,对此类结构设计时遇到的重难点问题(大面积墙受拉、受剪等)进行了分析研究,并提出了优化墙体布置、增加型钢等应对措施. 针对 L 形平面多次退台结构的收进判断,提供了一个可以参考的做法. 同时在抗震设计中采用性能化设计方法,并借助各种软件进行计算和验证,以达到规范所提出的相关抗震设防要求.

关键词: 超限结构; L 形平面; 退台; 框架-剪力墙结构; 性能化设计

中图分类号:TU398. 1 文献标志码:A 文章编号:1002-848X(2023)07-0050-06

DOI:10. 19701 / j. jzjg. SADI2308

Analysis and design of a L-shaped out-of-code structure with repeated plane retractions

DONG Junlong1,2, HE Jun1, WANG Dan1, LIU Jintao1, CHEN Ke3

(1 Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China; 2 Complex StructureDesign and Research Center, Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. ,Chengdu 610095, China; 3 Sunway International Co. , Ltd. , Chengdu 610096, China)

Abstract: An office building is a L-shaped out-of-code high-rise building with repeated plane retractions in seismicfortification intensity zone of 7 degrees (0. 1g), and its performance target is C. A comparative study was carried out onthis L-shaped structure with retractions and without retractions, their torsion and vibration characteristics are completely inconsistent, and some suggestions for their torsion control were put forward. This office building is a short high-rise frameshear wall structure with core tubes centrally arranged. The key and difficult problems (tension and shear resistance of mostwalls) encountered in the design of similar structures were analyzed and studied, and the corresponding measures whichoptimize wall layout and increase section steel were put forward. A reference method was provided for judging the retractionof L-shaped structure with repeated plane retractions. At the same time, the performance-based design method was adoptedin the seismic design, and the calculation and verification were carried out with the help of various software, so as to meetthe relevant seismic fortification requirements proposed in the code.

Keywords:out-of-code structure; L-shape plane; retraction; frame-shear wall structure; performance-based design

第一作者:董骏龙,硕士,高级工程师,一级注册结构工程师、注册土木工程师( 岩土),主要从事结构设计工作,Email:644806754@ qq. com.

[引用本文] 董骏龙,何俊,王丹,等. 某 L 形平面多次退台超限结构分析研究[ J]. 建筑结构,2023,53(7):50-55,8. DONG Junlong,HE Jun,WANG Dan,et al. Analysis and design of a L-shaped out-of-code structure with repeated planeretractions [J]. Building Structure,2023,53(7):50-55,8.