全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2013 

基于有效耗能的改进Park-Ang双参数损伤模型及其计算研究

DOI: 10.6052/j.issn.1000-4750.2012.01.0051, PP. 84-90

Keywords: 钢筋混凝土,地震损伤模型,抗震性能,滞回耗能,有效耗能

Full-Text   Cite this paper   Add to My Lib

Abstract:

Park-Ang双参数地震损伤模型考虑了地震作用的首次超越破坏与累积损伤破坏两方面因素,较好的定义了结构的破坏,被后续研究广泛应用,但无法区分不同幅值作用下结构破坏的差异。分析了不同位移幅值下钢筋混凝土柱的破坏特点,研究了结构损伤与结构耗能之间的关系。试验表明弹性阶段(位移幅值小于一倍屈服位移)的试件几乎不发生破坏,造成钢筋混凝土柱破坏的能量集中在相持阶段和破坏阶段,定义非弹性阶段引起结构破坏的滞回耗能为导致结构破坏的有效耗能。基于有效耗能假设引入有效耗能因子e,提出了改进的Park-Ang双参数地震损伤模型。对建议模型进行了21组钢筋混凝土柱的试验数据验证,计算结果表明:有效耗能因子可以反映相同耗能下不同位移幅值引起的结构破坏差异,有效耗能因子e物理意义明确,改进后的双参数地震损伤模型计算精度高,离散性小,能够区分不同位移幅值下钢筋混凝土柱的破坏差异,较好地评估了RC结构的损伤性能。

References

[1]  清华大学,西南交通大学,北京交通大学土木工程结构专家组. 汶川地震建筑震害分析[J]. (建筑结构学报), 2008, 29(4): 1―9.CivilStructural Groups of Tsinghua University,Xinan Jiaotong UniversityBeijing Jiaotong University. Analysis on seismic damage of buildings in the Wenchuan earthquake [J]. Journal of Building Structures, 2008, 29(4): 1―9. (in Chinese)
[2]  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, 1995: 37―46Liu Boquan
[3]  王东升,司炳君,艾庆华,等. 改进的Park-Ang地震损伤模型及其比较[J]. (工程抗震与加固改造), 2005, 27(增刊): 138―144.Wang Dongsheng,Si Bingjun,Ai Qinghua,et al. A comparative study of modified Park-Ang model and Park-Ang model for structural seismic damage evaluation [J]. Earthquake Resistant Engineering and Retrofitting, 2005, 27(Suppl): 138―144. (in Chinese)
[4]  王东升,冯启民,王国新. 考虑低周疲劳寿命的改进Park-Ang地震损伤模型[J]. (土木工程学报), 2004, 37(11): 41―49.Wang Dongsheng,Feng Qimin,Wang Guoxin. A modified Park-Ang seismic damage model considering low-cycle fatigue life [J]. China Civil Engineering Journal, 2004, 37(11): 41―49. (in Chinese)
[5]  何利,叶献国. Kratzig及Park-Ang损伤指数模型比较研究[J]. (土木工程学报), 2010, 43(12): 1―6.He Li,Ye Xianguo. Comparative study of Kratzig and Park-Ang damage index models [J]. China Civil Engineering Journal, 2010, 43(12): 1―6. (in Chinese)
[6]  傅剑平,王敏,白绍良. 对用于钢筋混凝土结构的Park-Ang双参数破坏准则的识别和修正[J]. (地震工程与工程振动), 2005, 25(5): 73―79.Fu Jianping,Wang Min,Bai Shaoliang. Identification and modification of the Park-Ang criterion for failure of RC structures [J]. Earthquake Engineering and Engineering Vibration, 2005, 25(5): 73―79. (in Chinese)
[7]  Park Y J,Ang A H S. Mechanistic seismic damage model for reinforced concrete [J]. Journal of Structural Engineering, ASCE, 1985, 111(4): 722―739.
[8]  Park Y J,Ang A H S,Wen Y K. Seismic damage analysis of reinforced concrete buildings [J]. Journal of Structural Engineering, ASCE, 1985, 111(4): 740―756.
[9]  陈林之,蒋欢军,吕西林. 修正的钢筋混凝土结构Park-Ang损伤模型[J]. (同济大学学报(自然科学版)), 2010, 38(8): 1103―1107.Chen Linzhi,Jiang Huanjun,Lü Xilin. Modified Park-Ang damage model for reinforced concrete structures [J]. Lü Xilin. Modified Park-Ang damage model for reinforced concrete structures [J]. Journal of Tongji University (Natural Science), 2010, 38(8): 1103―1107. (in Chinese)
[10]  牛荻涛,任利杰. 改进的钢筋混凝土结构双参数地震破坏模型[J]. (地震工程与工程振动), 1996, 16(4): 44―54.Niu Ditao,Ren Lijie. A modified seismic damage model with double variables for reinforced concrete structures [J]. Earthquake Engineering and Engineering Vibration, 1996, 16(4): 44―54. (in Chinese)
[11]  陈永祁,龚思礼. 结构在地震动时延性和累积塑性耗能的双重破坏准则[J]. (建筑结构学报), 1986, 7(1): 35―48.Chen Yongqi,Gong Sili. Double control damage index of structural ductility and dissipated energy during earthquake [J]. Journal of Building Structures, 1986, 7(1): 35―48. (in Chinese)
[12]  Rao P S,Sarma B S,Lakshmanan N,et al. Damage model for reinforced concrete elements under cyclic loading [J]. ACI Materials Journal, 1998, 95(6): 682―690.
[13]  Telemachos B,Panagiotakos,Michael N. Fardis, Deformations of reinforced concrete members at yielding and Ultimate ACI Structural Journal [J]. ACI Materials Journal, 2001, 98(2): 135―148.
[14]  Kawashima Laboratory Department of Civil Engineering. Cyclic loading test data of reinforced concrete bridge piers [DB/OL]. http://seismic.cv. titech.ac.jp/en/titdata/titdata.html, 2011-01-10.
[15]  刘海卿,陈小波,王学庆. 基于损伤指数的框架结构倒塌分析综述[J]. (自然灾害学报), 2008, 17(1): 186―190.Liu Haiqing,Chen Xiaobo,Wang Xueqing. Over view of damage index-based analytical method for collapse of frame structure [J]. Journal of Natural Disasters, 2008, 17(1): 186―190. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133