解放军理工大学学报（自然科学版）
解放軍理工大學學報（自然科學版）
해방군리공대학학보（자연과학판）
JOURNAL OF PLA UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2015年
2期
149-155
,共7页
方钢管再生混凝土%取代率%耗能%延性%刚度
方鋼管再生混凝土%取代率%耗能%延性%剛度
방강관재생혼응토%취대솔%모능%연성%강도
RACFSST%replacement ratio%energy consumption%ductility%stiffness
为了研究方钢管再生混凝土柱在偏心荷载作用下的性能退化规律，以再生粗骨料取代率、长细比和偏心距为变化参数，设计了15个试件进行静力单调加载试验，在此基础上分析了其延性、耗能、刚度退化的演化过程。研究结果表明，方钢管再生混凝土柱的承载能力比方钢管普通混凝土柱的差，其极限承载力均随长细比和偏心距的增大而减小；轴心受压时，其耗能能力随取代率的增加呈先降后升的趋势，且随长细比的增加而降低；偏心受压时，其耗能能力随取代率的增加而降低，但随长细比的增加而提高；所有试件的耗能能力随偏心距的增大而提高，且延性系数随取代率的增加而降低；试件的弹性刚度随取代率的增加总体表现为先增后减的趋势，但均随长细比和偏心距的增加而降低。
為瞭研究方鋼管再生混凝土柱在偏心荷載作用下的性能退化規律，以再生粗骨料取代率、長細比和偏心距為變化參數，設計瞭15箇試件進行靜力單調加載試驗，在此基礎上分析瞭其延性、耗能、剛度退化的縯化過程。研究結果錶明，方鋼管再生混凝土柱的承載能力比方鋼管普通混凝土柱的差，其極限承載力均隨長細比和偏心距的增大而減小；軸心受壓時，其耗能能力隨取代率的增加呈先降後升的趨勢，且隨長細比的增加而降低；偏心受壓時，其耗能能力隨取代率的增加而降低，但隨長細比的增加而提高；所有試件的耗能能力隨偏心距的增大而提高，且延性繫數隨取代率的增加而降低；試件的彈性剛度隨取代率的增加總體錶現為先增後減的趨勢，但均隨長細比和偏心距的增加而降低。
위료연구방강관재생혼응토주재편심하재작용하적성능퇴화규률，이재생조골료취대솔、장세비화편심거위변화삼수，설계료15개시건진행정력단조가재시험，재차기출상분석료기연성、모능、강도퇴화적연화과정。연구결과표명，방강관재생혼응토주적승재능력비방강관보통혼응토주적차，기겁한승재력균수장세비화편심거적증대이감소；축심수압시，기모능능력수취대솔적증가정선강후승적추세，차수장세비적증가이강저；편심수압시，기모능능력수취대솔적증가이강저，단수장세비적증가이제고；소유시건적모능능력수편심거적증대이제고，차연성계수수취대솔적증가이강저；시건적탄성강도수취대솔적증가총체표현위선증후감적추세，단균수장세비화편심거적증가이강저。
To study the performance degradation rule of recycled aggregate concrete filled square steel tube (RACFSST)columns under eccentric compression loading,15 specimens with different replacement ratio of recycled coarse aggregate,slenderness ratio and eccentricity were tested under the monotonic static loading.On this basis,the evolutionary process of ductility,energy consumption and stiffness degenera-tion were analyzed.The results show that the bearing capacity of RACFSST columns is lower than that of square steel tube concrete columns,and that its ultimate bearing capacity decreases with the increase of slenderness ratio and eccentricity.The energy consumption of axial compression specimens goes up after dropping along with the increase of replacement ratio and decreases with the increase of slenderness ratio, while the energy consumption of eccentric loading specimens reduces with the increase of replacement ratio and increases with the rise of slenderness ratio.The energy consumption capacity of specimens increases with the rise of eccentricity,and the ductility indexes of specimens decrease with the increase of replace-ment ratio.Elastic stiffness drops after going up along with the increase of replacement ratio and decreases along with slenderness ratio and eccentricity rise.
