RPC箱型桥墩抗震性能的试验研究与数值分析
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摘要
以RPC箱型桥墩为研究对象,拟定合理结构形式和尺寸,设计了3个RPC箱型墩试件。通过对试件施加常轴力以及水平反复荷载,研究了水平荷载加载方向角对RPC箱型墩抗震性能的影响,分析了各试件的韧性、滞回曲线、骨架曲线、荷载退化曲线和刚度退化曲线等方面的特征,并得出了各试件的位移延性系数和耗能系数。作者编制并验证了单向荷载作用下的全过程非线性数值分析程序。实验与数值结果表明:RPC箱型墩具有较好的抗震性能,水平荷载加载方向角是影响箱型墩抗震性能的一个重要因素;斜向受力构件的抗震性能要弱于主轴受力构件。
Taking a reactive power concrete(RPC) box pier as the object of study,3 specimens with reasonable cross-section size and structure conformation were firstly designed.The effect of the direction angle of horizontal loading on the seismic performance of RPC box pier was experimentally studied through applying constant axial force and horizontal cyclic load.The ductility,hysteresis curve,skeleton curve,load degradation curve and stiffness degradation curve of specimen were studied,and the displacement ductility factor and energy loss factor of specimens were obtained.Non-linear numerical analysis program describing the complete process of specimen under one-way loading was compiled and verified by experimental results.Numerical and experimental results show that RPC box pier presents good seismic performance,and the direction angle of horizontal loading is a key factor in seismic performance of box pier,and the component subjected to oblique force presents weaker seismic performance than that of component subjected to axial force.
Taking a reactive power concrete(RPC) box pier as the object of study,3 specimens with reasonable cross-section size and structure conformation were firstly designed.The effect of the direction angle of horizontal loading on the seismic performance of RPC box pier was experimentally studied through applying constant axial force and horizontal cyclic load.The ductility,hysteresis curve,skeleton curve,load degradation curve and stiffness degradation curve of specimen were studied,and the displacement ductility factor and energy loss factor of specimens were obtained.Non-linear numerical analysis program describing the complete process of specimen under one-way loading was compiled and verified by experimental results.Numerical and experimental results show that RPC box pier presents good seismic performance,and the direction angle of horizontal loading is a key factor in seismic performance of box pier,and the component subjected to oblique force presents weaker seismic performance than that of component subjected to axial force.
引文
[1]黄栋.RPC预制拼装桥墩受力性能研究[D].北京:北京交通大学硕士论文,2005,30-41(Huang Dong.Themechanical properties of pre-cast RPC bridge piers[D].The Master Thesis of Beijing Jiaotong University,2005:30-41(in Chinese))
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[5]郝文秀,阎贵平,钟铁毅等.反复荷载作用下活性粉末混凝土箱型桥墩力学性能的试验研究[J].铁道学报,2009,31(5):60-64(Hao Wenxiu,Yan Guiping,Zhong Tieyi,et al.The mechanical properties of RPC boxbridge piers under cyclic loading[J].Railway Journal of China,2009,31(5):60-64(in Chinese))
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[10]吴炎海,何雁斌.活性粉末混凝土(RPC200)的配置试验研究[J].中国公路学报,2003,16(4):44-49(WuYanmei,He Yanbing.The experimental study of Reactive Powder Concrete(RPC200)[J].China HighwayJournal,2003,16(4):44-49(in Chinese))
[11]方志,杨剑.FRP和RPC在土木工程中的研究及应用[J].铁道科学与工程学报,2005,2(4):54-61(FangZhi,Yang Jian.The application in civil engineering of the FRP and RPC[J].Railway Science and EngineeringJournal,2005,2(4):54-61(in Chinese))
[2]周轶峰.活性粉末混凝土桥墩的受力性能研究[D].北京:北京交通大学硕士论文,2006:66-72(Zhou Yifeng.The mechanical properties of Reactive Powder Concrete bridge piers[D].The Master Thesis of Beijing JiaotongUniversity,2006:66-72(in Chinese))
[3]赵冠远,阎贵平.活性粉末混凝土柱的抗震性能试验研究[J].中国安全科学学报,2004,14(7):94-97(ZhaoGuanyuan,Yan Guiping.The experimental seismic analysis of Reactive powder concrete columns[J].Journal ofSafety and Science China,2004,14(7):94-97(in Chinese))
[4]许丽娜.活性粉末混凝土桥墩的地震响应分析[D].北京:北京交通大学硕士论文,2006:19-72(Xu Lina.Theseismic response analysis of Reactive powder concrete bridge pier[J].The Master Thesis of Beijing JiaotongUniversity,2006:19-72(in Chinese))
[5]郝文秀,阎贵平,钟铁毅等.反复荷载作用下活性粉末混凝土箱型桥墩力学性能的试验研究[J].铁道学报,2009,31(5):60-64(Hao Wenxiu,Yan Guiping,Zhong Tieyi,et al.The mechanical properties of RPC boxbridge piers under cyclic loading[J].Railway Journal of China,2009,31(5):60-64(in Chinese))
[6]单波.活性粉末混凝土基本力学性能的试验与研究[D].长沙:湖南大学土木工程学院硕士论文,2002:35-50(Shan Bo.The experimental mechanical properties of Reactive Powder Concrete[D].The Master Thesis of HunanUniversity,2002:35-50(in Chinese))
[7]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001(Fan Lichu,Zhuo Weidong.The seismicductility design of bridges[M].Beijing:China Communications Press,2001(in Chinese))
[8]王诚.活性粉末混凝土箱型桥墩抗震性能试验研究[D].长沙:湖南大学土木工程学院硕士论文,2010:47-57(Wang Cheng.The experimental study of RPC reinforced concrete columns[D].The PhD thesis in HunanUniversity,2010:47-57(in Chinese))
[9]中华人民共和国行业标准.建筑抗震试验方法规程(JTJ 101-96)[S].北京:中国建筑工业出版社,1997(Theindustry standards in People’s Republic of China.The Experimental Seismic test methods procedures(JTJ 101-96)[S].Beijing:China Building Industry Press,1997(in Chinese))
[10]吴炎海,何雁斌.活性粉末混凝土(RPC200)的配置试验研究[J].中国公路学报,2003,16(4):44-49(WuYanmei,He Yanbing.The experimental study of Reactive Powder Concrete(RPC200)[J].China HighwayJournal,2003,16(4):44-49(in Chinese))
[11]方志,杨剑.FRP和RPC在土木工程中的研究及应用[J].铁道科学与工程学报,2005,2(4):54-61(FangZhi,Yang Jian.The application in civil engineering of the FRP and RPC[J].Railway Science and EngineeringJournal,2005,2(4):54-61(in Chinese))
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