- 摘 要
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(1 華東建筑設計研究院有限公司, 上海 200002;2 上海超高層建筑設計工程技術研究中心, 上海 200002)
摘要: 針對高層和超高層框架混凝土柱構件,設計了一種新型的矩形八角組合螺旋箍筋柱. 與傳統(tǒng)成型鋼筋柱相比,矩形八角組合螺旋箍筋柱具有多項優(yōu)勢. 以傳統(tǒng)矩形八角組合箍筋柱的柱構件作為對照,通過非線性有限元分析模擬了柱的低周反復荷載試驗,研究了不同軸壓比下柱水平承載性能,得到了不同工況下的極限承載力、荷載-位移曲線和破壞形態(tài). 結果表明:有限元分析結果與試驗結果吻合較好;隨著軸壓比的提高,柱的水平承載力變大,荷載-位移曲線的強度下降段變陡,延性變差;成型矩形八角組合螺旋箍筋柱與傳統(tǒng)矩形八角組合箍筋柱的剛度、承載力和延性接近. 綜上所述,成型矩形八角組合螺旋箍筋柱在構造和受力性能上均具有良好的適用性,在建筑結構尤其是高層和超高層結構中具有推廣價值.
關鍵詞: 高層框架; 成型鋼筋; 矩形八角組合; 螺旋箍筋柱; 水平承載性能; 剛度; 延性
中圖分類號: TU318 文獻標志碼: A 文章編號: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
∗國家重點研發(fā)計劃《建筑工程現(xiàn)場工業(yè)化建造集成平臺與裝備關鍵技術開發(fā)》 (2018YFC0705800) .
第一作者:周建龍,學士,全國工程勘察設計大師,教授級高級工程師,主要從事超高結構的設計與相關研究,Email: zjl0290@ecadi. com.
[引用本文] 周建龍,邱介堯,徐浩,等. 成型矩形八角組合螺旋箍筋柱設計及數值模擬研究[ J] . 建筑結構,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.
