低周反復荷載作用下鋼骨混凝土L形柱受力性能試驗
李琪，吳佳杰
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低周反復荷載作用下鋼骨混凝土L形柱受力性能試驗李琪，吳佳杰（揚州大學建筑科學與工程學院，揚州 225009）［摘要］通過3根鋼骨混凝土L形柱和1根普通鋼筋混凝土L形柱的低周反復加載試驗，得到鋼骨混凝土L形柱在壓、彎、剪共同作用下的破壞形態(tài)。通過試驗分析鋼骨混凝土L形柱的延性、滯回特性、耗能能力、承載力退化、剛度退化，結果表明：鋼骨混凝土L形柱的承載力隨配鋼量的增加而提高；延性隨配鋼量的增加而提高, 隨軸壓比的增大而降低；鋼骨混凝土L形柱與鋼筋混凝土L形柱相比，承載力高、延性好、耗能能力強、變形能力大，抗震性能優(yōu)。［關鍵詞］ 鋼骨混凝土；L形柱；低周反復荷載；延性中圖分類號：TU398.7文獻標識碼：A文章編號：1002-848X(2011)01-0011-03Experimental study of L-shaped section steel reinforced concrete column under low reversed cyclic loadingLi Qi, Wu Jiajie（College of Civil Science and Engineering, Yangzhou University, Yangzhou 225009, China）Abstract:Through the low reversed cyclic loading experiment of three L-shaped section steel reinforced concrete columns and one L-shaped section reinforced concrete column, the main destroyed patterns of L-shaped section steel reinforced concrete columns were obtained under compression, combining flexure and shear force. According to the experiment, the ductility, hysteresis, ability of energy consumption, bearing capacity degradation and stiffness degradation of L-shaped section steel reinforced concrete column were analyzed. The results show that the bearing capacity of L-shaped section steel reinforced concrete columns improves with the increase of the steel volume. The ductility raises with the increase of the steel volume and declines with the increase of the axial compression ratio. Compared to L-shaped section reinforced concrete columns, L-shaped section steel reinforced concrete columns have higher capacity, better ductility, larger energy dissipation capacity, more deformation capacity, and excellent seismic performance.Keywords:steel reinforced concrete; L-shaped section column; low reversed cyclic loading; ductility作者簡介：李琪，博士，教授， Email：lqgjh@126.com參考文獻［1］JGJ149—2006混凝土異形柱結構技術規(guī)程［S］. 北京：中國建筑工業(yè)出版社，2006.［2］李哲, 張小鋒, 闕良剛，等. T形截面鋼骨混凝土短柱承受水平周期性荷載的試驗研究［J］. 水利與建筑工程學報，2006，4(2):24-25.［3］陳宗平, 薛建陽, 趙鴻鐵，等. 型鋼混凝土異形柱抗震性能試驗研究［J］. 建筑結構學報，2007，28(3):53-61.［4］許安邦, 陳宗平, 蘇益聲，等. 兩種不同混凝土異形柱正截面極限承載力的比較［J］. 廣西大學學報：自然科學版，2006，31(2):168-171.［5］陳宗平, 薛建陽, 趙鴻鐵，等. 低周反復荷載作用下型鋼混凝土異形柱的抗剪承載力分析［J］.土木工程學報，2007，40(7):30-36.［6］朱伯龍. 結構抗震試驗［M］. 北京：地震出版社，1989.
