(1 华东建筑设计研究院有限公司, 上海 200002;2 上海超高层建筑设计工程技术研究中心, 上海 200002)

摘要: 针对高层和超高层框架混凝土柱构件,设计了一种新型的矩形八角组合螺旋箍筋柱. 与传统成型钢筋柱相比,矩形八角组合螺旋箍筋柱具有多项优势. 以传统矩形八角组合箍筋柱的柱构件作为对照,通过非线性有限元分析模拟了柱的低周反复荷载试验,研究了不同轴压比下柱水平承载性能,得到了不同工况下的极限承载力、荷载-位移曲线和破坏形态. 结果表明:有限元分析结果与试验结果吻合较好;随着轴压比的提高,柱的水平承载力变大,荷载-位移曲线的强度下降段变陡,延性变差;成型矩形八角组合螺旋箍筋柱与传统矩形八角组合箍筋柱的刚度、承载力和延性接近. 综上所述,成型矩形八角组合螺旋箍筋柱在构造和受力性能上均具有良好的适用性,在建筑结构尤其是高层和超高层结构中具有推广价值.

关键词: 高层框架; 成型钢筋; 矩形八角组合; 螺旋箍筋柱; 水平承载性能; 刚度; 延性

中图分类号: TU318 文献标志码: A 文章编号:1002-848X(2022)03-0001-06

DOI:10. 19701 / j. jzjg. SHJG2107

Design and numerical simulation research of fabricated rectangular-octagonal composite spiralstirrups column

ZHOU Jianlong1,2, QIU Jieyao1,2, XU Hao1,2, BAO Lianjin1,2, QIAN Peng1,2

(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China;2 Shanghai Engineering Technology Research Center of Super High-rise Building Design, Shanghai 200002, China)

Abstract: For high-rise and super high-rise frame concrete column components, a new type of rectangular-octagonalcomposite spiral stirrups column is designed. Compared with traditional formed steel bars column, the rectangular-octagonalcomposite spiral stirrups column has many advantages. Taking the column member of the traditional rectangular octagonalcombined stirrup column as comparison, the low cycle reversed load test of the column was simulated through nonlinearfinite element analysis, and the horizontal load-bearing performance of the column under different axial compression ratioswas studied. Ultimate bearing capacity, load-displacement curve and failure mode under different working conditions wereobtained. The results show that the finite element analysis results are in good agreement with the experimental results. Withthe increase of the axial compression ratio, the horizontal bearing capacity of the column becomes larger, the strength dropof the load-displacement curve becomes steeper, and the ductility becomes worse. From the perspective of stiffness, bearingcapacity and ductility, the performance of the columns with fabricated rectangular-octagonal composite spiral stirrups isclose to that of the columns with traditional form of stirrups. To sum up, the fabricated rectangular-octagonal compositespiral stirrups column has good applicability in structure and mechanical performance, and has promotion value in buildingstructures, especially high-rise and super high-rise structures.

Keywords: high-rise frame; fabricated steel bar; rectangular-octagonal composite; spiral stirrups column; horizontalload-bearing performance; stiffness; ductility

∗国家重点研发计划《建筑工程现场工业化建造集成平台与装备关键技术开发》 (2018YFC0705800) .

第一作者:周建龙,学士,全国工程勘察设计大师,教授级高级工程师,主要从事超高结构的设计与相关研究,Email: zjl0290@ecadi. com.

[引用本文] 周建龙,邱介尧,徐浩,等. 成型矩形八角组合螺旋箍筋柱设计及数值模拟研究[ J] . 建筑结构,2022,52( 3 ) : 1-6, 72. ZHOU Jianlong,QIU Jieyao,XU Hao,et al. Design and numerical simulation research of fabricatedrectangular-octagonal composite spiral stirrups column[ J] . Building Structure,2022,52(3) :1-6,72.