高强钢筋混凝土框架柱双向受剪性能试验研究
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摘要
为研究配置高强钢筋的混凝土框架柱的双向受剪性能,进行了两组12根矩形截面框架柱的试验研究,其中第一组采用单调加载,第二组采用低周往复加载,分析斜向水平荷载下两个主轴方向的配箍量不相等的框架柱破坏特征、承载力、位移、滞回曲线、耗能能力及强度退化等抗震性能。试验结果表明:往复加载时的最大荷载与极限位移均低于单调加载时的最大荷载与极限位移;在加载初期框架柱耗能能力较差,强度退化不明显;随着加载位移逐渐增大,耗能能力也有所提高,强度退化程度明显增加。
In order to study the bilateral shear behavior of high strength reinforcement concrete frame columns,two groups of 12 specimens were tested.The two groups are subjected to low cyclic loading and monotonic load,respectively.The damage characteristic,bearing capacity,displacement,hysteretic curve,energy dissipation and strength degradation of the specimens with different stirrups in both principal directions are compared.It is shown that the maximum load and limit displacement under low cyclic loading is lower than that under the monotonic load.At the beginning of loading,the energy dissipation is weak and the strength degeneration is not obvious.With the increase of displacement,the energy dissipation improves and the strength degeneration increases.
In order to study the bilateral shear behavior of high strength reinforcement concrete frame columns,two groups of 12 specimens were tested.The two groups are subjected to low cyclic loading and monotonic load,respectively.The damage characteristic,bearing capacity,displacement,hysteretic curve,energy dissipation and strength degradation of the specimens with different stirrups in both principal directions are compared.It is shown that the maximum load and limit displacement under low cyclic loading is lower than that under the monotonic load.At the beginning of loading,the energy dissipation is weak and the strength degeneration is not obvious.With the increase of displacement,the energy dissipation improves and the strength degeneration increases.
引文
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[13]陈宗平,王妮,薛建阳,等.型钢混凝土L形柱—混凝土梁节点的受力性能[J].广西大学学报:自然科学版,2011,36(4):530-534.
[2]WATANABE F,MUGURUMA H.Strength evaluation of RC column failing in shear[J].Transactions of the Japan Con-crete Institute,1985,38(7):285-292.
[3]WOODWARD K A,JIRSA J O,ASCE M.Influence of reinforcement on RC short column lateral resistance[J].Journal ofStructural Engineering,1984,l10(1):90-104.
[4]杨建江,乌兰,陈云霞.钢筋混凝土框架柱受力全过程分析[J].天津大学学报:自然科学与工程技术版,2003,36(4):439-442.
[5]王铁成,王诚,梅廉.混凝土框架柱双向受剪性能试验研究与相关性分析[J].地震工程与工程震动,2007,27(4):37-38.
[6]邵莉,户克霄,王铁成.空间桁架拱模型框架柱受剪承载力分析[J].低温建筑技术,2007(2):65-66.
[7]王立军,王铁成,王崧.斜向水平荷载作用下钢筋混凝土框架柱受剪性能的试验研究[J].建筑结构学报,2006,27(4):96-102.
[8]戎贤,王铁成,康谷贻.钢筋混凝土框架柱双向受剪承载力分析[J].地震工程与工程振动,2002,22(5):46-52.
[9]OUSALEM H.Use of high-strength bars for the seismic performance of high-strength concrete columns[J].Journal of Ad-vanced Concrete Technology,2009,7(1):123-134.
[10]SUMPTER M S,SANI H.Behavior of high-performance steel as shear reinforcement for concrete beams[J].ACI Struc-tural Journal,2009,106(2):171-177.
[11]中华人民共和国建设部.GB50010-2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.
[12]王铁成,张学辉,康谷贻.两种混凝土异形柱框架抗震性能试验对比[J].天津大学学报:自然科学与工程技术版,2007,40(7):791-798.
[13]陈宗平,王妮,薛建阳,等.型钢混凝土L形柱—混凝土梁节点的受力性能[J].广西大学学报:自然科学版,2011,36(4):530-534.
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