配500MPa钢筋后张有黏结预应力混凝土梁抗震性能试验研究
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摘要
500MPa钢筋是我国现阶段大力推广的受力钢筋,其构件的抗震性能研究尤为重要。通过9根后张有黏结预应力混凝土梁及1根普通钢筋混凝土梁的低周反复加载试验,对配置500MPa钢筋后张有黏结预应力梁的抗震性能进行分析,包括梁的滞回性能、骨架曲线、位移延性、刚度退化、耗能性能等。研究了换算配筋率、有效预应力、预应力筋合力点到构件边缘距离、预应力强度比、受压钢筋配筋量等参数对其抗震性能的影响。在此基础上,评估《混凝土结构设计规范》(GB 50010—2010)中有关预应力混凝土结构抗震设计相关规定的合理性。
The use of 500MPa rebar is highly recommended in our current practice,and the study on seismic performance of RC components reinforced with 500MPa rebars is of vital importance.Based on low-cycle reversed loading tests on 9 post-tensioned prestressed concrete beams and 1 RC beam,the seismic performance of 500MPa-rebar reinforced beams,including the hysteretic curve,skeleton curve,displacement ductility,stiffness degradation and energy-dissipation capacity,was systematically investigated.A comprehensive analysis was carried out to study the influences of the converted steel ratio,the effective prestress,the distance from resultant force point of prestresed rebars to the edge of beams,the prestress strength ratio,the quantity of compression reinforcement on the seismic performance.Furthermore,the rationality of relevant provisions on seismic design of prestressed concrete structures in Code for design of concrete structures GB 50010—2010 was discussed and evaluated.
The use of 500MPa rebar is highly recommended in our current practice,and the study on seismic performance of RC components reinforced with 500MPa rebars is of vital importance.Based on low-cycle reversed loading tests on 9 post-tensioned prestressed concrete beams and 1 RC beam,the seismic performance of 500MPa-rebar reinforced beams,including the hysteretic curve,skeleton curve,displacement ductility,stiffness degradation and energy-dissipation capacity,was systematically investigated.A comprehensive analysis was carried out to study the influences of the converted steel ratio,the effective prestress,the distance from resultant force point of prestresed rebars to the edge of beams,the prestress strength ratio,the quantity of compression reinforcement on the seismic performance.Furthermore,the rationality of relevant provisions on seismic design of prestressed concrete structures in Code for design of concrete structures GB 50010—2010 was discussed and evaluated.
引文
[1]Park R,Thompson K J.Ductility of prestressed andpartially prestressed concrete beam sections[J].PCIJournal,1980,25(2):46-70
[2]Namman A E,Harajli M H,Wight J K.Analysis ofductility of partially prestressed concrete flexural members[J].PCI Journal,1986,31(3):64-87
[3]薛伟辰,程斌,李杰.低周反复荷载下预应力高性能混凝土梁的抗震性能[J].地震工程与工程振动,2003,23(1):78-83(Xue Weichen,Cheng Bin,Li Jie.Seismicperformance of prestressed high-performance beams underlow-reversed cyclic loading[J].Earthquake Engineeringand Engineering Vibration,2003,23(1):78-83(inChinese))
[4]薛伟辰,杨枫,苏旭霖,等.预应力钢骨混凝土梁低周反复荷载试验研究[J].哈尔滨工业大学学报,2007,39(8):1185-1190(Xue Weichen,Yang Feng,Su Xulin,etal.Experimental studies on prestressed steel reinforcedconcrete beams under low reversed cyclic loading[J].Journal of Harbin Institute of Technology,2007,39(8):1185-1190(in Chinese))
[5]杨枫,薛伟辰.高预应力度混凝土梁抗震性能探讨[J].地震工程与工程振动,2006,26(6):108-115(YangFeng,Xue Weichen.Studies on seismic performance ofprestressed concrete beams with high PPR[J].EarthquakeEngineering and Engineering Vibration,2006,26(6):108-115(in Chinese))
[6]孟少平.预应力混凝土框架结构抗震能力及设计方法的研究[D].南京:东南大学,2000(Meng Shaoping.Stduy on capacity and design approach of prestressedconcrete frame structures for seismic resistance[D].Nanjing:Southeast University,2000(in Chinese))
[7]郑文忠.预应力混凝土结构抗震性能研究概况[J].哈尔滨建筑大学学报,1996,29(4):18-24(ZhengWenzhong.A survey on aseismatic capacity of prestressedconcrete structure[J].Journal of Harbin University of CivilEngineering and Architecture,1996,29(4):18-24(inChinese))
[8]李志华.配高强钢筋混凝土梁的受弯性能研究[D].上海:同济大学,2008(Li Zhihua.Research on flexuralperformance concrete beams reinforced with high strengthrebars[D].Shamghai:Tongji University,2008(inChinese))
[9]董理.配置高强钢筋的预应力混凝土梁抗弯刚度的研究[D].上海:同济大学,2011(Dong Li.Research onflexural stiffness of prestressed concrete beams with highstrength rebars[D].Shanghai:Tongji University,2011(inChinese))
[10]杜毛毛.配500MPa钢筋后张有粘结预应力混凝土梁受弯性能研究[D].上海:同济大学,2010(Du Maomao.Flexural behavior of post-tensioned bonded prestressedconcrete beams with 500MPa steel bars[D].Shangai:Tongji Univerisity,2009(in Chinese))
[11]张帆.配500MPa钢筋后张有粘结预应力混凝土梁抗震性能试验研究及分析[D].上海:同济大学,2012(Zhang Fan.Experimental research and analysis onseismic performance of post-tensioned prestressed concretebeams with 500MPa rebars[D].Shanghai:TongjiUniverisity,2012(in Chinese))
[12]GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版,2010(GB50010—2010Code for design ofconcrete structures[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[2]Namman A E,Harajli M H,Wight J K.Analysis ofductility of partially prestressed concrete flexural members[J].PCI Journal,1986,31(3):64-87
[3]薛伟辰,程斌,李杰.低周反复荷载下预应力高性能混凝土梁的抗震性能[J].地震工程与工程振动,2003,23(1):78-83(Xue Weichen,Cheng Bin,Li Jie.Seismicperformance of prestressed high-performance beams underlow-reversed cyclic loading[J].Earthquake Engineeringand Engineering Vibration,2003,23(1):78-83(inChinese))
[4]薛伟辰,杨枫,苏旭霖,等.预应力钢骨混凝土梁低周反复荷载试验研究[J].哈尔滨工业大学学报,2007,39(8):1185-1190(Xue Weichen,Yang Feng,Su Xulin,etal.Experimental studies on prestressed steel reinforcedconcrete beams under low reversed cyclic loading[J].Journal of Harbin Institute of Technology,2007,39(8):1185-1190(in Chinese))
[5]杨枫,薛伟辰.高预应力度混凝土梁抗震性能探讨[J].地震工程与工程振动,2006,26(6):108-115(YangFeng,Xue Weichen.Studies on seismic performance ofprestressed concrete beams with high PPR[J].EarthquakeEngineering and Engineering Vibration,2006,26(6):108-115(in Chinese))
[6]孟少平.预应力混凝土框架结构抗震能力及设计方法的研究[D].南京:东南大学,2000(Meng Shaoping.Stduy on capacity and design approach of prestressedconcrete frame structures for seismic resistance[D].Nanjing:Southeast University,2000(in Chinese))
[7]郑文忠.预应力混凝土结构抗震性能研究概况[J].哈尔滨建筑大学学报,1996,29(4):18-24(ZhengWenzhong.A survey on aseismatic capacity of prestressedconcrete structure[J].Journal of Harbin University of CivilEngineering and Architecture,1996,29(4):18-24(inChinese))
[8]李志华.配高强钢筋混凝土梁的受弯性能研究[D].上海:同济大学,2008(Li Zhihua.Research on flexuralperformance concrete beams reinforced with high strengthrebars[D].Shamghai:Tongji University,2008(inChinese))
[9]董理.配置高强钢筋的预应力混凝土梁抗弯刚度的研究[D].上海:同济大学,2011(Dong Li.Research onflexural stiffness of prestressed concrete beams with highstrength rebars[D].Shanghai:Tongji University,2011(inChinese))
[10]杜毛毛.配500MPa钢筋后张有粘结预应力混凝土梁受弯性能研究[D].上海:同济大学,2010(Du Maomao.Flexural behavior of post-tensioned bonded prestressedconcrete beams with 500MPa steel bars[D].Shangai:Tongji Univerisity,2009(in Chinese))
[11]张帆.配500MPa钢筋后张有粘结预应力混凝土梁抗震性能试验研究及分析[D].上海:同济大学,2012(Zhang Fan.Experimental research and analysis onseismic performance of post-tensioned prestressed concretebeams with 500MPa rebars[D].Shanghai:TongjiUniverisity,2012(in Chinese))
[12]GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版,2010(GB50010—2010Code for design ofconcrete structures[S].Beijing:China Architecture&Building Press,2010(in Chinese))
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