钢管混凝土叠合柱边框内藏钢桁架核心筒抗震性能试验研究
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摘要
为进一步改善混凝土核心筒的抗震性能,本文提出了钢管混凝土叠合柱边框内藏钢桁架组合核心筒。进行了2个1/6缩尺的核心筒模型在低周反复荷载下的抗震性能试验研究,1个为钢管混凝土叠合柱边框组合核心筒,1个为钢管混凝土叠合柱边框内藏钢桁架组合核心筒。通过试验,对比分析了2个核心筒的承载力、延性、刚度及其衰减、滞回特性、耗能能力及破坏特征,给出了钢管混凝土叠合柱边框内藏钢桁架组合核心筒的承载力计算模型,计算结果与实测值符合较好。研究表明,钢管混凝土叠合柱边框内藏钢桁架组合核心筒与钢管混凝土叠合柱边框组合核心筒相比,其抗震性能明显提高。
In order to further improve the seismic performance of concrete core walls,a new kind of RC composite core walls with steel tube-reinforced concrete columns and concealed steel trusses is proposed in this paper.Two 1/6 scale core wall specimens with the same tube-reinforced concrete columns,in which one with concealed steel trusses and another without,are tested under cyclic loading.The load-capacity,ductility,stiffness,deterioration process of stiffness,hysteresis characteristics,energy dissipation and damage characteristics of the two specimens are discussed.The mechanical model is provided for calculating the load-carrying capacity of the new RC composite care walls.The calculating results agreed well with the experimental ones.They show that the seismic performance of the RC composite core walls with tube-reinforced concrete columns could be improved by setting the concealed steel trusses in the walls.
In order to further improve the seismic performance of concrete core walls,a new kind of RC composite core walls with steel tube-reinforced concrete columns and concealed steel trusses is proposed in this paper.Two 1/6 scale core wall specimens with the same tube-reinforced concrete columns,in which one with concealed steel trusses and another without,are tested under cyclic loading.The load-capacity,ductility,stiffness,deterioration process of stiffness,hysteresis characteristics,energy dissipation and damage characteristics of the two specimens are discussed.The mechanical model is provided for calculating the load-carrying capacity of the new RC composite care walls.The calculating results agreed well with the experimental ones.They show that the seismic performance of the RC composite core walls with tube-reinforced concrete columns could be improved by setting the concealed steel trusses in the walls.
引文
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[11]JGJ3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.
[2]Hossain,Khandaker MAnwar.Design aspects of double skin profiled composite framed shear walls in construction and service stages[J].ACIStructural Journal,2004,101(1):94-102.
[3]乔彦明,钱稼茹,方鄂华,等.钢骨混凝土剪力墙抗剪性能的试验研究[J].建筑结构,1995,25(8):3-7.
[4]王曙光,蓝宗建.劲性钢筋混凝土开洞低剪力墙拟静力试验研究[J].建筑结构学报,2005,26(1):85-90,124.
[5]曹万林,常卫华.内藏钢桁架混凝土组合剪力墙.中国,ZL200520017358.1[P].2006.06.28.
[6]曹万林.钢管混凝土边框-钢桁架-混凝土组合剪力墙.中国,ZL200620172810.6[P].2008.
[7]曹万林.钢管混凝土边框-钢桁架-混凝土组合筒体.中国,ZL200620172807.4[P].2008.
[8]曹万林,张建伟,陶军平,等.内藏钢桁架混凝土组合剪力墙抗震性能试验研究[J].东南大学学报,2007,37(2):195-200.
[9]王敏,曹万林,张建伟,等.钢管混凝土边框高强混凝土组合剪力墙抗震性能试验研究[J].地震工程与工程振动,2008,28(2):90-95.
[10]常卫华,曹万林,赵长军,等.内藏钢桁架混凝土核心筒抗震试验及计算分析[J].北京工业大学学报,2008,34(4):379-386.
[11]JGJ3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.
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