基于损伤的钢框架结构倒塌位移分析
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摘要
单一的位移指标并不能反映地震持时对结构累积损伤的影响,基于位移和滞回耗能的双重破坏准则更符合震害和试验结果。比较现有适用于钢结构的3种不同损伤模型及其计算方法,提出合理的计算方法建议。以损伤指数的形式进行结构损伤评估,损伤指数超过临界值时认为结构完全倒塌,2条小脉冲波的倒塌位移分别为0.07m和0.08m,大脉冲波的为0.13m,其余波的为0.1~0.11m,与FEMA中得出的倒塌位移0.15m相比有所降低。
A single displacement index can't reflect the influence of seismic duration on structure cumulative damage,the double failure criterion based on the displacement and hysteretic energy dissipation is more suitable to damage and test results.This paper compares the existing three different damage model applicable to steel structure and its calculation method,so as to propose suggestion on reasonable calculation method.The damage index is used to assess the structure,structure will completely collapse when the damage index is greater than critical value,collapsed displacement for two small pulse waves are 0.07mand 0.08m,for the big pulse wave is 0.13m,for the rest of the waves are about 0.1~0.11m,which are lower than 0.15m(the collapsed displacement of FEMA).
A single displacement index can't reflect the influence of seismic duration on structure cumulative damage,the double failure criterion based on the displacement and hysteretic energy dissipation is more suitable to damage and test results.This paper compares the existing three different damage model applicable to steel structure and its calculation method,so as to propose suggestion on reasonable calculation method.The damage index is used to assess the structure,structure will completely collapse when the damage index is greater than critical value,collapsed displacement for two small pulse waves are 0.07mand 0.08m,for the big pulse wave is 0.13m,for the rest of the waves are about 0.1~0.11m,which are lower than 0.15m(the collapsed displacement of FEMA).
引文
[1]蒋松佑.平面框架能量分析和研究[D].重庆:重庆大学,2008.
[2]Kasira J I,Yao J T P.Fatigue Damage in Seismic Structures[J].Journal of the Structural Engineering,1969,95(8):1673-1692.
[3]Tang J P,Yao J T P.Expected Fatigue Damage of Seismic Structures[J].Journal of the Structural Engineering,1972,98(3):695-708.
[4]Banonh,Irvine H M,Big GS JM.Seismic Damage in Reinforced Concrete Frames[J].Journal of the Structural Engineering,1981,107(9):1713-1729.
[5]Park Y J,Ang A H S.Mechanistic Seismic Damage Model for Reinforced Concrete[J].Journal of Structural Engineering,1985,111(4):722-739.
[6]欧进萍,牛荻涛,王光远.多层非线性抗震钢结构的模型动力可靠性分析与设计[J].地震工程与工程振动,1990,10(4):27-37.
[7]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.
[8]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.
[9]沈祖炎,董宝,曹文衔.结构损伤累积分析的研究现状和存在的问题[J].同济大学学报,1997,25(2):135-140.
[10]于海洋.钢筋混凝土结构地震损伤模型研究[D].重庆:重庆大学,2004.
[11]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.
[12]连业达,王宪杰,张洵安,等.结构地震累积损伤指标研究进展[J].工业建筑,2012,42(4):118-122.
[13]杜修力,欧进萍.钢筋混凝土结构低周疲劳效应对地震累积破坏的影响[C]//结构工程科学发展青年专家研讨会论文集.哈尔滨:国家自然科学基金委员会,1992:65-72.
[14]马千里.钢筋混凝土框架结构基于能量抗震设计方法研究[D].北京:清华大学,2009.
[15]庄茁.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009.
[16]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[17]王君,何若全.基于倒塌分析抗弯钢框架的结构影响系数[D].苏州:苏州科技学院,2012.
[18]FEMA 351.Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings[S].Washington DC,2000.
[2]Kasira J I,Yao J T P.Fatigue Damage in Seismic Structures[J].Journal of the Structural Engineering,1969,95(8):1673-1692.
[3]Tang J P,Yao J T P.Expected Fatigue Damage of Seismic Structures[J].Journal of the Structural Engineering,1972,98(3):695-708.
[4]Banonh,Irvine H M,Big GS JM.Seismic Damage in Reinforced Concrete Frames[J].Journal of the Structural Engineering,1981,107(9):1713-1729.
[5]Park Y J,Ang A H S.Mechanistic Seismic Damage Model for Reinforced Concrete[J].Journal of Structural Engineering,1985,111(4):722-739.
[6]欧进萍,牛荻涛,王光远.多层非线性抗震钢结构的模型动力可靠性分析与设计[J].地震工程与工程振动,1990,10(4):27-37.
[7]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.
[8]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.
[9]沈祖炎,董宝,曹文衔.结构损伤累积分析的研究现状和存在的问题[J].同济大学学报,1997,25(2):135-140.
[10]于海洋.钢筋混凝土结构地震损伤模型研究[D].重庆:重庆大学,2004.
[11]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.
[12]连业达,王宪杰,张洵安,等.结构地震累积损伤指标研究进展[J].工业建筑,2012,42(4):118-122.
[13]杜修力,欧进萍.钢筋混凝土结构低周疲劳效应对地震累积破坏的影响[C]//结构工程科学发展青年专家研讨会论文集.哈尔滨:国家自然科学基金委员会,1992:65-72.
[14]马千里.钢筋混凝土框架结构基于能量抗震设计方法研究[D].北京:清华大学,2009.
[15]庄茁.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009.
[16]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[17]王君,何若全.基于倒塌分析抗弯钢框架的结构影响系数[D].苏州:苏州科技学院,2012.
[18]FEMA 351.Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings[S].Washington DC,2000.
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