再生混凝土框架顶层角节点的抗震性能试验研究
|
摘要
通过对3榀再生混凝土框架顶层角节点(再生粗骨料掺量为100%)在低周反复荷载作用下的抗震性能试验,对试件的破坏形态、延性、耗能能力等进行了分析。研究表明,再生混凝土框架顶层角节点试件在低周反复荷载作用下经历初裂、通裂、极限、破坏4个阶段,最终呈节点核心区剪切破坏。位移延性系数在3.27～3.95之间,具有良好的抗震性能,可用于有抗震设防要求的框架。采用ANSYS软件建立了节点的有限元计算模型,进行了单调荷载下的有限元非线性分析,得到了骨架曲线和试件的应力分布形态,有限元计算结果与试验结果吻合较好。采用《混凝土结构设计规范》规定的公式对角节点抗剪强度进行了计算并与试验数据相比较,发现计算值偏于不安全。
A study is conducted on the seismic behavior of three recycled concrete knee-joints with 100% recycled coarse aggregate under low frequency reversed load.The seismic behavior of recycled concrete members such as failure features,ductility,stress of steels in the specimens and energy dissipation under reversed loads is investigated.The test and analyses show that the recycled concrete member can be applied in structures because of its good seismic behavior.These specimens are modeled with ANSYS software.The calculated skeleton curves and the stress distribution of the specimen are corresponding well with the test results.It is found that the calculated shear capacity from formula provided in the code is significantly greater than test results.
A study is conducted on the seismic behavior of three recycled concrete knee-joints with 100% recycled coarse aggregate under low frequency reversed load.The seismic behavior of recycled concrete members such as failure features,ductility,stress of steels in the specimens and energy dissipation under reversed loads is investigated.The test and analyses show that the recycled concrete member can be applied in structures because of its good seismic behavior.These specimens are modeled with ANSYS software.The calculated skeleton curves and the stress distribution of the specimen are corresponding well with the test results.It is found that the calculated shear capacity from formula provided in the code is significantly greater than test results.
引文
[1]孙跃东,肖建庄,周德源,等.再生混凝土框架抗震性能的试验研究[J].土木工程学报,2006,39(5):9-15.SUN Yuedong,XIAO Jianzhuang,ZHOU Deyuan,et al.An experimental study on the seismic behavior of recycled concrete frames[J].Civil Engi-neering Journal,2006,39(5):9-15.(in Chinese)
[2]崔建宇,车轶,孙建刚,等.配筋形式对框架顶层角节点抗震性能影响试验研究[J].建筑结构学报,2010,31(8):71-78.CUI Jianyu,CHE Yi,SUN Jiangang,et al.Expermiental study on effect of reinforcement arrangement on seismic behavior of knee-joints in RC frame[J].Journal of Building Structure,2010,31(8):71-78.(in Chinese)
[3]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989,120-128.TANG Jiuru.Earthquaike resistance of joints for reinforced concrete frames[M].Nanjing:Southeastern University Press,1989,120-128.(in Chi-nese)
[4]Corinaldesi V,Moriconi G.Behavior of beam-column jionts made of sustainable concrete under cyclic loading[J].Journal of Materials in Civil En-gineering,2006(5):650-658.
[5]肖建庄,朱晓晖.再生混凝土框架节点抗震性能研究[J].同济大学学报:自然科学版,2005,33(4):436-440.XIAO Jianzhuang,ZHU Xiaohui.Study on seismic behavior of recycled concrete frame joints[J].Journal of Tongji University:Natural Science,2005,33(4):436-440.(in Chinese)
[6]贾胜伟,李晓文,刘超.再生混凝土框架中间节点延性及耗能分析[J].新型建筑材料,2010,8:7-10.JIA Shengwei,LI Xiaowen,LIU Chao.Analysis of the ductility and energy dissipation of the recycled concrete frame joints[J].New Building Ma-terials,2010,8:7-10.(in Chinese)
[7]GB50010-2010混凝土结构设计规范[S].GB 50010-2010 Code for Design of Concrete Structure[S].
[8]崔建宇,孙建刚,宋玉普.钢筋混凝土框架角节点抗剪强度试验研究[J].地震工程与工程振动,2008,28(5):115-12.CUI Jianyu,SUN Jiangang,SONG Yupu,Experimental study on shear resistant capacity of reinforced concrete frame corner joints[J].Journal ofEarthquake Engineering and Engineering Vibration,2008,28(5):115-121.(in Chinese)
[2]崔建宇,车轶,孙建刚,等.配筋形式对框架顶层角节点抗震性能影响试验研究[J].建筑结构学报,2010,31(8):71-78.CUI Jianyu,CHE Yi,SUN Jiangang,et al.Expermiental study on effect of reinforcement arrangement on seismic behavior of knee-joints in RC frame[J].Journal of Building Structure,2010,31(8):71-78.(in Chinese)
[3]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989,120-128.TANG Jiuru.Earthquaike resistance of joints for reinforced concrete frames[M].Nanjing:Southeastern University Press,1989,120-128.(in Chi-nese)
[4]Corinaldesi V,Moriconi G.Behavior of beam-column jionts made of sustainable concrete under cyclic loading[J].Journal of Materials in Civil En-gineering,2006(5):650-658.
[5]肖建庄,朱晓晖.再生混凝土框架节点抗震性能研究[J].同济大学学报:自然科学版,2005,33(4):436-440.XIAO Jianzhuang,ZHU Xiaohui.Study on seismic behavior of recycled concrete frame joints[J].Journal of Tongji University:Natural Science,2005,33(4):436-440.(in Chinese)
[6]贾胜伟,李晓文,刘超.再生混凝土框架中间节点延性及耗能分析[J].新型建筑材料,2010,8:7-10.JIA Shengwei,LI Xiaowen,LIU Chao.Analysis of the ductility and energy dissipation of the recycled concrete frame joints[J].New Building Ma-terials,2010,8:7-10.(in Chinese)
[7]GB50010-2010混凝土结构设计规范[S].GB 50010-2010 Code for Design of Concrete Structure[S].
[8]崔建宇,孙建刚,宋玉普.钢筋混凝土框架角节点抗剪强度试验研究[J].地震工程与工程振动,2008,28(5):115-12.CUI Jianyu,SUN Jiangang,SONG Yupu,Experimental study on shear resistant capacity of reinforced concrete frame corner joints[J].Journal ofEarthquake Engineering and Engineering Vibration,2008,28(5):115-121.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心