叠合柱边框-内藏网状钢桁架混凝土组合核心筒抗震性能试验
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摘要
以工程中实际应用的核心筒为原型,进行了1个1/7缩尺的叠合柱边框内藏网状钢桁架组合核心筒低周反复荷载试验.基于试验,分析了该筒体的滞回特性、承载力、延性、刚度及其退化过程、破坏特征等,同时分析了该筒体的薄弱部位及其产生原因,提出了抗震构造措施.研究表明,该组合核心筒的叠合柱边框和内藏钢桁架墙体对其承载力和延性均有显著贡献.
A1/7 scale composite core wall specimen designed from a pratical engineering was tested under low-frequency cyclic loading.The hysteretic characteristics,load-carrying capacity,ductility,stiffness and its degradation process,failure pattern of the specimen were analyzed based on the test.The related anti-seismic constructional measures were given after the weakness part of the specimen was analyzed.The results show that the load-carrying capacity and the ductility of the core walls could be improved greatly by combining the STRC columns as the borders and concealed steel trusses in the walls.
A1/7 scale composite core wall specimen designed from a pratical engineering was tested under low-frequency cyclic loading.The hysteretic characteristics,load-carrying capacity,ductility,stiffness and its degradation process,failure pattern of the specimen were analyzed based on the test.The related anti-seismic constructional measures were given after the weakness part of the specimen was analyzed.The results show that the load-carrying capacity and the ductility of the core walls could be improved greatly by combining the STRC columns as the borders and concealed steel trusses in the walls.
引文
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[4]常卫华.内藏钢桁架混凝土组合核心筒抗震试验及理论研究[D].北京工业大学建筑工程学院,2008,3.CHANG Wei-hua.Study on theory and experimentalseismic performance of RC composite core walls withconcealed steel truss[D].Beijing:College of Architectureand Civil Engineering,Beijing University of Technology,2008,3.(in Chinese)
[5]吕西林,李俊兰.钢筋混凝土核心筒体抗震性能试验研究[J].地震工程与工程振动,2002,22(3):42-50.LXi-lin,LI Jun-lan.Seismic behavior of reinforcedconcrete core walls subjected to cyclic loading.[J].Earthquake Engineering and Engineering Vibration,2002,22(3):42-50.(in Chinese)
[6]贾鹏,杜修力,赵均.不同轴压比钢筋混凝土核心筒抗震试验[J].北京工业大学学报,2009,1(35):63-69.JIA Peng,DU Xiu-li,ZHAO Jun.Seismic behavior ofreinforced concrete core wall under different axial load ratio[J].Journal of Beijing University of Technology,2009,1(35):63-69.(in Chinese)
[7]林咏梅,周小真,张连德.钢筋混凝土双向压弯剪构件在单调扭矩作用下抗扭性能的研究[J].建筑结构学报,1996,1(17):29-39.LIN Yong-mei,ZHOU Xiao-zhen,ZHANG Lian-de.Studyon torsional behavior of RC members subjected to biaxialeccentric compression,biaxial shear and monotonic torsion[J].Journal of Building Structures,1996,1(17):29-39.(in Chinese)
[8]中国建筑科学研究院.JGJ3—2010,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,2010.China Academy of Building Research.JGJ 3—2010,Technical specification for concrete structures of tallbuilding[S].Beijing:China Architecture&BuildingPress,2010.(in Chinese)
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