再生混凝土框架柱抗震性能试验研究
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摘要
进行了再生粗骨料取代率分别为0%、50%、100%的3个再生混凝土框架柱低周反复荷载的对比试验,在相同轴压比、不同取代率的情况下,对普通混凝土与再生混凝土框架柱、再生混凝土框架柱之间不同取代率的破坏形态、滞回特性、延性性能、耗能特性等问题进行了对比分析。试验结果表明再生混凝土与普通混凝土框架柱的破坏过程相似,前者的滞回特性、延性和耗能均满足抗震要求,因此在有抗震设防要求地区的框架中采用再生混凝土是可行的,但再生混凝土较普通混凝土框架柱构件延性减小,耗能能力降低,不建议直接采用原有设计方法,需进行合理的构造加强措施。
A comparative study is conducted on the seismic behaviors of three recycled concrete frame columns under low cyclic load.The recycled coarse aggregate replacement rates are 0%,50% or 100%.The mechanical characteristics,failure mode,hysteresis loops,ductility and energy dissipation of frame columns with different recycled coarse aggregate replacement rates and same axial compression ratio are comparatively analyzed in this paper.The rule characteristics between ordinary concrete and recycled concrete frame columns is found.The results indicate that the failure process of recycled concrete frame columns is similar to that of ordinary concrete.The seismic behaviors of recycled concrete frame columns,including the ductility etc.,still meet the requirements of earthquake-resistance designing.So it is concluded that the recycled concrete can be applied in concrete structures.Because there are certain deficiencies in its properties,some construction measures must be taken.
A comparative study is conducted on the seismic behaviors of three recycled concrete frame columns under low cyclic load.The recycled coarse aggregate replacement rates are 0%,50% or 100%.The mechanical characteristics,failure mode,hysteresis loops,ductility and energy dissipation of frame columns with different recycled coarse aggregate replacement rates and same axial compression ratio are comparatively analyzed in this paper.The rule characteristics between ordinary concrete and recycled concrete frame columns is found.The results indicate that the failure process of recycled concrete frame columns is similar to that of ordinary concrete.The seismic behaviors of recycled concrete frame columns,including the ductility etc.,still meet the requirements of earthquake-resistance designing.So it is concluded that the recycled concrete can be applied in concrete structures.Because there are certain deficiencies in its properties,some construction measures must be taken.
引文
[1]白国良,刘超,张锋剑,等.再生混凝土结构基本受力行为研究[R].西安建筑科技大学土木工程学院,2008.
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[4]肖建庄,沈宏波,黄运标.再生混凝土柱受压性能试验[J].结构工程师,2006,22(6):73-77.
[5]JGJ101-96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[6]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1998.
[7]Ho J C M,PamHJ.Inelastic design of low-axially loaded high-strength reinforced concrete columns[J].Engineering Structures,2003(25):1083-1096.
[8]Mehta P K Advancements in concrete technology[J].Concrete International,1999(6):69-76.
[9]郭子雄,吕西林.高轴压比框架柱恢复力模型试验研究[J].土木工程学报,2004(5):32-38.
[10]Saatciogiu M,Razvi S R.Displacement based design of reinforced concrete columns for confinement[J].ACI Structural Journal,2002,99(1):3-31.
[11]郭子雄,张志伟,黄群贤,等.型钢混凝土柱恢复力模型试验研究[J].地震工程与工程振动,2009,29(5):79-85.
[12]Lingo Brachmann,JoAnn Browning,Adolfo Matamoros.Drift-dependent confinement requirements for reinforced concrete columns under cyclicloading[J].ACI Structural Journal,2004,101(5):669-677.
[2]刘数华,冷发光.再生混凝土技术[M].北京:中国建材工业出版社,2007.
[3]程元虎,刘超,李晓文,等.再生混凝土梁受弯性能试验研究[J].砖瓦,2010(2):45-49.
[4]肖建庄,沈宏波,黄运标.再生混凝土柱受压性能试验[J].结构工程师,2006,22(6):73-77.
[5]JGJ101-96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[6]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1998.
[7]Ho J C M,PamHJ.Inelastic design of low-axially loaded high-strength reinforced concrete columns[J].Engineering Structures,2003(25):1083-1096.
[8]Mehta P K Advancements in concrete technology[J].Concrete International,1999(6):69-76.
[9]郭子雄,吕西林.高轴压比框架柱恢复力模型试验研究[J].土木工程学报,2004(5):32-38.
[10]Saatciogiu M,Razvi S R.Displacement based design of reinforced concrete columns for confinement[J].ACI Structural Journal,2002,99(1):3-31.
[11]郭子雄,张志伟,黄群贤,等.型钢混凝土柱恢复力模型试验研究[J].地震工程与工程振动,2009,29(5):79-85.
[12]Lingo Brachmann,JoAnn Browning,Adolfo Matamoros.Drift-dependent confinement requirements for reinforced concrete columns under cyclicloading[J].ACI Structural Journal,2004,101(5):669-677.
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