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(1 廣西大學土木建筑工程學院，南寧 530004； 2 西安建筑科技大學土木工程學院，西安 710055)

［摘要］進行了4個配T形鋼桁架和槽形鋼桁架的空腹式配鋼十字形SRC異形柱試件的低周反復加載試驗，試驗的變化參數(shù)有荷載加載方向、截面配鋼方式、軸壓比和剪跨比。通過試驗揭示了空腹式配鋼的十字形SRC異形柱的受力機理和破壞形態(tài)，獲取了其滯回性能、開裂荷載及極限承載力，并分析了其破壞特點。在試驗基礎上，分析推導了其開裂荷載、極限承載能力的計算方法和計算公式，計算值與試驗值吻合較好。

［關(guān)鍵詞］型鋼混凝土(SRC)；十字形柱；受力性能；強度計算

Mechanical behavior and strength calculation of steel reinforced concrete cross-shaped columns

Chen Zongping1, Xue Jianyang2, Zhao Hongtie2(1 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004,China;

2 School of Civil Engineering, Xi’n University of Architecture and Technology, Xi’an 710055,China)

Abstract:In order to reveal the mechanical behavior of the steel reinforced concrete cross-shaped column, 4 specimens were designed for low cyclic reversed loading test, and the steel layout fashion included T-shaped steel truss and channel steel truss. Experimental parameters were loading direction, steel layout fashion, axial compressive ratio and shear span ratio. The failure patterns,mechanical behaviors, bearing