高强混凝土框架柱的地震损伤模型
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摘要
本文首先讨论了现有的几种地震损伤模型及其特点,然后计算出试验框架柱累积滞回耗能随加载循环水平的变化,分析和讨论了轴压比、箍筋形式、配箍率、纵向配筋率、混凝土强度等级以及剪跨比对累积滞回耗能的影响。根据现有的损伤模型,对试验框架柱的损伤指数进行了分析比较,给出了符合高强混凝土框架柱和普通混凝土框架柱的地震损伤模型。根据损伤指数随加载循环水平的变化规律,分析和讨论了剪跨比、轴压比以及配箍率对损伤的影响。最后通过对各地震损伤模型的比较分,提出了高强混凝土框架柱的地震损伤模型。
In this paper, several existing seismic damage models as well as their characteristics were discussed first of all. And then we figured out the variational history of incremental dissipated hysteretic energy of tentative frame columns under different loading cycle levels and the influence of axial compression ratio, type of stirrups, stirrup ratio, reinforcement ratio, strength grade of concrete and shear span ratio on the incremental dissipated hysteretic energy was discussed and analyzed. The damage index of tentative frame columns was compared and analyzed according to the existing seismic damage models, and the seismic damage models adapted for high-strength concrete columns and ordinary-strength concrete columns were offered. The influence of shear span ratio, axial compression ratio and stirrup ratio on the damage was discussed and analyzed according to the variational history of the damage index under different loading cycle levels. Finally, by analyzing all sorts of seismic damage models comparatively, the seismic damage model of high strength concrete frame columns is put forward.
In this paper, several existing seismic damage models as well as their characteristics were discussed first of all. And then we figured out the variational history of incremental dissipated hysteretic energy of tentative frame columns under different loading cycle levels and the influence of axial compression ratio, type of stirrups, stirrup ratio, reinforcement ratio, strength grade of concrete and shear span ratio on the incremental dissipated hysteretic energy was discussed and analyzed. The damage index of tentative frame columns was compared and analyzed according to the existing seismic damage models, and the seismic damage models adapted for high-strength concrete columns and ordinary-strength concrete columns were offered. The influence of shear span ratio, axial compression ratio and stirrup ratio on the damage was discussed and analyzed according to the variational history of the damage index under different loading cycle levels. Finally, by analyzing all sorts of seismic damage models comparatively, the seismic damage model of high strength concrete frame columns is put forward.
引文
[1] 刘伯权.抗震结构的破坏准则及可靠性分析[M ].北京:中国建材工业出版社,1996.
[2] 张国军,刘伯权,李应斌,等.抗震结构的破坏准则的研究进展[J].四川建筑科学研究,2002,(3):68~71.
[3] ParkYJ,AngAH S.Amechanisticseismicdamagemodelforreinforcedconcrete[J].J.StructureEngineering,ASCE,1985,111(4):740~756.
[4] GCBeolchini,DGaleota,MMGiammatteo,etal.SeismicbehaviorofhighstrengthRCcolumns[A].12thWCEE[C].Auckland,NewZeal and:2000NewZealandSocietyforEarthquakeEngineering,2000.
[5] 王光远.工程结构与系统抗震优化设计的实用方法[M].北京:中国建筑工业出版社,2000.
[6] 牛狄涛,任利杰.改进的钢筋混凝土结构双参数地震破坏准则[J].地震工程与工程振动,1996:16(4),44~54.
[7] 李洪泉,雷立宏,吕西林.钢筋混凝土压弯构件低周疲劳损伤的抗力衰减试验研究[J].南京建筑工程学院学报,1998,(3):10~16.
[8] 欧进萍,何政,吴斌,等.钢筋混凝土结构基于地震损伤性能的设计[J].地震工程与工程振动,1999,19(1):21~30.
[9] 张国军.大型火力发电厂高强混凝土框架柱的抗震性能研究[D].西安:西安建筑科技大学,2003.
[2] 张国军,刘伯权,李应斌,等.抗震结构的破坏准则的研究进展[J].四川建筑科学研究,2002,(3):68~71.
[3] ParkYJ,AngAH S.Amechanisticseismicdamagemodelforreinforcedconcrete[J].J.StructureEngineering,ASCE,1985,111(4):740~756.
[4] GCBeolchini,DGaleota,MMGiammatteo,etal.SeismicbehaviorofhighstrengthRCcolumns[A].12thWCEE[C].Auckland,NewZeal and:2000NewZealandSocietyforEarthquakeEngineering,2000.
[5] 王光远.工程结构与系统抗震优化设计的实用方法[M].北京:中国建筑工业出版社,2000.
[6] 牛狄涛,任利杰.改进的钢筋混凝土结构双参数地震破坏准则[J].地震工程与工程振动,1996:16(4),44~54.
[7] 李洪泉,雷立宏,吕西林.钢筋混凝土压弯构件低周疲劳损伤的抗力衰减试验研究[J].南京建筑工程学院学报,1998,(3):10~16.
[8] 欧进萍,何政,吴斌,等.钢筋混凝土结构基于地震损伤性能的设计[J].地震工程与工程振动,1999,19(1):21~30.
[9] 张国军.大型火力发电厂高强混凝土框架柱的抗震性能研究[D].西安:西安建筑科技大学,2003.
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