(甘肃省科工建设集团有限公司, 兰州 730300)

摘要: 某平面和竖向均不规则的超限高层建筑,同时存在着局部构件间断、塔楼偏斜、楼板不连续、扭转不规则、尺寸突变等超限情况. 对结构在多遇地震作用下的整体抗震性能进行分析,在 ETABS 结构计算软件中选取符合条件的 2 条人工波及 5 条天然波模拟地震作用,考虑采用主、次波双向地震作用加载的方式,对结构进行弹性时程补充分析和设防地震作用下结构关键构件的抗震性能验算,并利用 SAUSAGE 和 PERFORM 3D 三维非线性弹塑性分析软件对结构进行动力弹塑性时程分析和弹塑性时程补充分析. 计算结果表明,通过提高底部局部墙肢配筋率、埋设钢板、局部楼板加厚等措施,本超限高层项目可达到预期的抗震性能目标. 最后给出了本项目针对结构超限情况采取的相关措施.

关键词: 超限高层结构; 框支剪力墙结构; 抗震设计; 弹塑性分析

中图分类号:TU355 文献标志码:A 文章编号:1002-848X(2023)09-0046-07

DOI:10. 19701 / j. jzjg. 20212297

Seismic design and performance analysis of an out-of-code high-rise structure in high intensity area

GUO Zhen, MA Zhangyong

(Gansu Science and Industry Construction Group Co. , Ltd. , Lanzhou 730300, China)

Abstract: An out-of-code high-rise building with irregular plane and vertical direction has out-of-code situations such aslocal component discontinuity, tower deflection, floor discontinuity, irregular torsion and sudden dimensional changes. Theoverall seismic performance of the structure under the action of multiple earthquakes was analyzed. Two artificial waves andfive natural waves that meet the conditions were selected in the ETABS structural calculation software to simulate theseismic action. The elastic time history supplementary analysis of the structure and the seismic performance checkingcalculation of the key components of the structure under earthquake protection were carried out by using the two-way seismicaction loading method of primary and secondary waves. The dynamic elastic-plastic time history and elasto-plastic timehistory supplementary analysis were carried out by SAUSAGE and PERFORM 3D nonlinear elasto-plastic analysis software.The calculation results show that the expected seismic performance goal of this out-of-code high-rise project can be achievedby improving the reinforcement ratio of the local wall limb at the bottom, burying the steel plate, and thickening the localfloor. Finally, the relevant measures taken by this project to deal with structural overruns were given.

Keywords:out-of-code high-rise structure; frame supported shear wall structure; earthquake resistant design; elastoplasticanalysis

第一作者:郭震,硕士,正高级工程师,主要从事钢结构工程相关研究,Email:595013516@ qq. com.

[引用本文] 郭震,马张永. 高烈度区某超限高层结构抗震设计及性能分析[ J]. 建筑结构,2023,53(9):46-52.GUO Zhen,MA Zhangyong. Seismic design and performance analysis of an out-of-code high-rise structure in high intensityarea[J]. Building Structure,2023,53(9):46-52.