- 摘 要
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（九江學院土木工程與城市建設(shè)學院， 九江 332005）
［摘要］完成了3個小跨高比超高韌性水泥基復合材料連梁和1個普通鋼筋混凝土連梁的低周反復加載試驗，研究了連梁的破壞形態(tài)、滯回性能、耗能能力、剛度退化等性能，分析了連梁跨高比變化對其抗震性能的影響。研究結(jié)果表明，與普通鋼筋混凝土連梁相比，小跨高比連梁的破壞形態(tài)有從脆性向塑性轉(zhuǎn)變的趨勢；超高韌性水泥基復合材料連梁的滯回曲線呈反S形，剛度退化較為明顯，但較普通鋼筋混凝土連梁的滯回曲線更為飽滿，剛度退化趨勢變緩；超高韌性水泥基復合材料連梁能改善連梁抗震工作性能，滿足工程設(shè)計要求。
［關(guān)鍵詞］超高韌性水泥基復合材料； 連梁； 擬靜力試驗； 抗震性能； 滯回曲線
中圖分類號：TU599，TU323-3文獻標識碼：A文章編號：1002-848X(2016)15-0074-05
Experimental study on seismic performance of coupling beams with small span-depth ratio and ultra high toughness engineered cementitious composite
Yang Zhong
(College of Civil Engineering, Jiujiang University, Jiujiang 332005, China)
Abstract:Low cyclic loading tests on three coupling beams with small span-depth ratio and ultra high toughness engineered cementitious composite and an ordinary reinforced concrete coupling beam were conducted to study the performances of failure mode, hysteretic behavior, energy dissipation capacity and rigidity degeneration and analyze the effect of coupling beam′s span-depth ratio on the seismic performance. The results indicate that compared with the ordinary reinforced concrete coupling beam, failure mode of coupling beams with small span-depth ratio has the trend to transform from brittleness to plasticity. The hysteretic loop of coupling beams with ultra high toughness engineered cementitious composite features inverse S-shape with obvious rigidity degeneration. However, the hysteretic loop is fuller than that of ordinary reinforced concrete coupling beams and stiffness degradation trend is slower. Coupling beams with ultra high toughness engineered cementitious composite can improve the seismic performance of coupling beams, and meet the requirements of engineering design.
Keywords:ultra high toughness engineered cementitious composite; coupling beam; pseudo-static test; seismic performance; hysteretic loop
作者簡介：楊忠，博士，講師，Email：masyang@163.com。
