四层两跨高性能混凝土框架的抗震性能
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摘要
通过低周反复荷载试验对四层两跨高性能混凝土框架的破坏形态、破坏机制、恢复力模型、变形恢复能力、位移延性、刚度退化以及耗能能力等进行了研究,并对多层多跨框架结构的最优破坏机制进行了分析。研究表明,实现逐层梁铰机制的框架具有良好的整体延性和耗能能力,框架顶点和层间位移延性系数达到4.5~8.0。编制了基于恢复力模型的滞回全过程分析程序,应用该程序对四层两跨高性能混凝土框架进行了模拟计算,计算结果与试验值吻合良好。在此基础上,对高性能混凝土框架结构基于"中震可修"的性能指标及其限值进行了初步探讨。
In order to investigate the seismic behavior of high performance concrete(HPC) frames,such as failure pattern,failure mechanism,hysteretic model,deformation restoring capacity,displacement ductility,stiffness degradation and energy dissipation capacity,an experimental study on a four-story two-bay HPC frame under low reversed cyclic loading is carried out.The optimal failure mechanism of the multi-bay multi-story frame is emphasized.Studies show that a sequential development of beam hinges from bottom to top of multi-story multi-bay frames can provide good ductility and energy dissipation capacity.The top and story ductility coefficients of the frame range from 4.5 to 8.0.A program based on hysteretic models is developed for hysteresis full-range analysis of the model frame.Hysteresis analytical calculations agree well with the experimental results.In addition,structural performance indices and its value of design limits based on the principle of "repairable under moderate level of earthquake" for HPC frames are preliminarily studied.
In order to investigate the seismic behavior of high performance concrete(HPC) frames,such as failure pattern,failure mechanism,hysteretic model,deformation restoring capacity,displacement ductility,stiffness degradation and energy dissipation capacity,an experimental study on a four-story two-bay HPC frame under low reversed cyclic loading is carried out.The optimal failure mechanism of the multi-bay multi-story frame is emphasized.Studies show that a sequential development of beam hinges from bottom to top of multi-story multi-bay frames can provide good ductility and energy dissipation capacity.The top and story ductility coefficients of the frame range from 4.5 to 8.0.A program based on hysteretic models is developed for hysteresis full-range analysis of the model frame.Hysteresis analytical calculations agree well with the experimental results.In addition,structural performance indices and its value of design limits based on the principle of "repairable under moderate level of earthquake" for HPC frames are preliminarily studied.
引文
[1]冯乃谦.高性能混凝土结构[M].北京:机械工业出版社,2003.
[2]陈肇元,朱金铨,吴佩刚.高强混凝土及其应用[M].北京:清华大学出版社,1992.
[3]Fang I-Kuang,Wang Chuen-Shyuan,Hong Keh-Luen.Cyclicbehavior of high-strength concrete short beams with lowamout of flexural reinforcement[J].ACI Structural Journal,1994,91(1):10-l8.
[4]薛伟辰,程斌,李杰.预应力与非预应力高性能混凝土梁抗震性能试验研究与有限元分析[J].建筑结构学报,2004,25(1):1-8.
[5]薛伟辰,程斌,李杰.双层双跨高性能混凝土框架抗震性能研究[J].土木工程学报,2004,37(3):58-65.
[6]程斌,薛伟辰.高性能混凝土框架结构滞回全过程分析[J].应用力学学报,2004,21(2):27-32.
[7]马宏旺,吕西林.建筑结构基于性能抗震设计的几个问题[J].同济大学学报,2002,30(12):1429-1434.
[8]Wu Keru,Yan An,Yao Wu,Zhang Dong.Effect of metallicaggregate on strength and fracture properties of HPC[J].Cement and Concrete Research,2001,31(2):113-118.
[9]徐云扉,胡庆昌,陈玉峰等.低周反复荷载下两跨三层钢筋混凝土框架受力性能的试验研究[J].建筑结构学报,1986,7(2):1-15.
[10]Smith K G.Innovation in earthquake resistant concretestructure design philosophies:A century of progress sinceHennebique s patent[J].Engineering Structures,2001,23:72-81.
[11]李少泉,沙镇平.钢筋混凝土多高层建筑结构在地震作用下的割线刚度分析[J].土木工程学报,2003,36(8):37-42.
[12]李应斌,刘伯权,史庆轩.结构性能水准与评价指标[J].世界地震工程,2003,19(2):132-137.
[13]郭子雄.基于变形的抗震设计理论及应用研究[D].上海:同济大学,2000.
[14]Pampanin Stefano,Christopoulos Constantin,NigelPriestley M J.Performance-based seismic response offrame structures including residual deformations.Part II:Multi-degree of freedom systems[J].Journal ofEarthquake Engineering,2003,7(1):119-147.
[2]陈肇元,朱金铨,吴佩刚.高强混凝土及其应用[M].北京:清华大学出版社,1992.
[3]Fang I-Kuang,Wang Chuen-Shyuan,Hong Keh-Luen.Cyclicbehavior of high-strength concrete short beams with lowamout of flexural reinforcement[J].ACI Structural Journal,1994,91(1):10-l8.
[4]薛伟辰,程斌,李杰.预应力与非预应力高性能混凝土梁抗震性能试验研究与有限元分析[J].建筑结构学报,2004,25(1):1-8.
[5]薛伟辰,程斌,李杰.双层双跨高性能混凝土框架抗震性能研究[J].土木工程学报,2004,37(3):58-65.
[6]程斌,薛伟辰.高性能混凝土框架结构滞回全过程分析[J].应用力学学报,2004,21(2):27-32.
[7]马宏旺,吕西林.建筑结构基于性能抗震设计的几个问题[J].同济大学学报,2002,30(12):1429-1434.
[8]Wu Keru,Yan An,Yao Wu,Zhang Dong.Effect of metallicaggregate on strength and fracture properties of HPC[J].Cement and Concrete Research,2001,31(2):113-118.
[9]徐云扉,胡庆昌,陈玉峰等.低周反复荷载下两跨三层钢筋混凝土框架受力性能的试验研究[J].建筑结构学报,1986,7(2):1-15.
[10]Smith K G.Innovation in earthquake resistant concretestructure design philosophies:A century of progress sinceHennebique s patent[J].Engineering Structures,2001,23:72-81.
[11]李少泉,沙镇平.钢筋混凝土多高层建筑结构在地震作用下的割线刚度分析[J].土木工程学报,2003,36(8):37-42.
[12]李应斌,刘伯权,史庆轩.结构性能水准与评价指标[J].世界地震工程,2003,19(2):132-137.
[13]郭子雄.基于变形的抗震设计理论及应用研究[D].上海:同济大学,2000.
[14]Pampanin Stefano,Christopoulos Constantin,NigelPriestley M J.Performance-based seismic response offrame structures including residual deformations.Part II:Multi-degree of freedom systems[J].Journal ofEarthquake Engineering,2003,7(1):119-147.
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