圆端空心墩地震损伤评估及抗震性能目标研究
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摘要
损伤评估方法是结构抗震性能研究的重要课题,也是确定结构抗震性能目标的基础。文章在系统梳理现有抗震评估方法的基础上,根据铁路圆端空心墩拟静力试验的实测滞回曲线,通过计算不同荷载等级下的损伤累积耗能和位移延性比,采用Park-Ang类损伤模型定量分析圆端空心墩的震损情况,结合实际桥墩加载过程中的损伤情况,对比研究了各损伤模型的优劣。基于曾华武模型建立了地震损伤水平与实测位移比的关系,实现了圆端空心墩抗震性能目标的量化。
The damage assessment method is an important subject in the study of seismic performance of structures,and it is also the basis for determining the objective of seismic performance of structures. On the basis of systematically collating the existing seismic damage assessment methods,according the measured hysteretic curves of pseudo-static test of round-end hollow piers,the ration of accumulated damage energy dissipation to displacement ductility are calculated under different load levels. Then Park-Ang damage assessment model is used to quantitatively analyze the damage status of the round-end hollow piers and in combination with the actual damage situation of pier during loading, the comparative study on the advantages and disadvantages of various damage models is conducted. Based on Zeng Huawu's model,the ratio relationship of seismic damage level to measured displacement is established,which helps to quantify the seismic performance objective of round-end hollow piers.
The damage assessment method is an important subject in the study of seismic performance of structures,and it is also the basis for determining the objective of seismic performance of structures. On the basis of systematically collating the existing seismic damage assessment methods,according the measured hysteretic curves of pseudo-static test of round-end hollow piers,the ration of accumulated damage energy dissipation to displacement ductility are calculated under different load levels. Then Park-Ang damage assessment model is used to quantitatively analyze the damage status of the round-end hollow piers and in combination with the actual damage situation of pier during loading, the comparative study on the advantages and disadvantages of various damage models is conducted. Based on Zeng Huawu's model,the ratio relationship of seismic damage level to measured displacement is established,which helps to quantify the seismic performance objective of round-end hollow piers.
引文
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[2] Kunnath SK,Reinhorn AM and Park YJ. Analytical Modeling ofInelastic Seismic Response of R/C Structures[J]. Journal ofStructural Engineering,1990,116(4):996-1017.
[3]王东升,冯启民,王新国.考虑低周循环加载疲劳寿命的改进Park-Ang地震损伤模型[J].土木工程学报,2004,11(37):41-49.WANG Dongsheng, FENG Qimin, WANG Xinguo. A ModifiedPark-Ang Seismic Damage Model Considering Low-cycle Fatigue Life[J]. China Civil Engineering Journal,2004,37(11):41-49.
[4] Kumar S,Usami T. Damage Evaluation in Steel Box Columns byCyclic Loading Tests[J]. Journal of Structural Engineering,1996,122(6):626-634.
[5]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].地震工程与工程震动,1996,16(4):44-54.NIU Ditao, REN Lijie. A Modified Damage Model with DoubleVariables for Reinforced Concrete Structures[J]. EarthquakeEngineering and Engineering Vibration,1996,16(4):44-54.
[6]李军旗,赵世春.钢筋混凝土构件损伤模型[J].兰州铁道学院学报(自然科学版),2000,19(3):25-27.LI Junqi,ZHAO Shichun. Damage Model of Reinforced ConcreteMember[J]. Journal of Lanzhou Railway University(NaturalSciences),2000,19(3):25-27.
[7]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 andModification of the Park-Ang Criterion for Failure of RC Structures[J]. Earthquake Engineering and Engineering Vibration. 2005,25(5):73-79.
[8]付国,刘伯权,邢国华.基于有效耗能的改进Park-Ang双参数损伤模型及其计算研究[J].工程力学,2013,30(7):84-90.FU Guo,LIU Boquan,XING Guohua. The Research and Calculationon Modified Park-Ang Double Parameter Seismic Damage ModelBased on Energy Dissipation[J]. Engineering Mechanics,2013,30(7):84-90.
[9]罗文文,李英民,韩军.考虑加载路径影响的改进Park-Ang损伤模型[J].工程力学,2014. 31(7):112-128.LUO Wenwen,LI Yingmin,HAN Jun. A Modified Park-Ang SeismicDamage Model Considering the Load Path Effects[J]. EngineeringMechanics,2014,31(7):112-128.
[10]陈林之,蒋欢军,吕西林,等.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,LV Xilin,et al. Modified Park-AngDamage Model for Reinforced Concrete Structures[J]. Journal ofTongji University(Natural Science),2010,38(8):1103-1107.
[11]曾武华,王逢朝,卓卫东.采用变形与能量双重准则的钢筋混凝土桥墩地震损伤模型[J].华侨大学学报,2016,37(4):441-446.ZENG Wuhua,WANG Fenghao,ZHUO Weidong. Deformation andEnergy-based Seismic Damage Model of Reinforced Concrete BridgePiers[J]. Journal of Huaqiao University(Natural Science),2016,37(4):441-446.
[12]杜晓菊,张耀庭.钢筋混凝土构件损伤模型的比较研究[J].地震工程与工程振动,2015,35(4):222-229.DU Xiaoju, ZHANG Yaoting. A Comparative Study on DamageModels for Reinforced Concrete Members[J]. EarthquakeEngineering and Engineering Vibration,2015,35(4):222-229.
[2] Kunnath SK,Reinhorn AM and Park YJ. Analytical Modeling ofInelastic Seismic Response of R/C Structures[J]. Journal ofStructural Engineering,1990,116(4):996-1017.
[3]王东升,冯启民,王新国.考虑低周循环加载疲劳寿命的改进Park-Ang地震损伤模型[J].土木工程学报,2004,11(37):41-49.WANG Dongsheng, FENG Qimin, WANG Xinguo. A ModifiedPark-Ang Seismic Damage Model Considering Low-cycle Fatigue Life[J]. China Civil Engineering Journal,2004,37(11):41-49.
[4] Kumar S,Usami T. Damage Evaluation in Steel Box Columns byCyclic Loading Tests[J]. Journal of Structural Engineering,1996,122(6):626-634.
[5]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].地震工程与工程震动,1996,16(4):44-54.NIU Ditao, REN Lijie. A Modified Damage Model with DoubleVariables for Reinforced Concrete Structures[J]. EarthquakeEngineering and Engineering Vibration,1996,16(4):44-54.
[6]李军旗,赵世春.钢筋混凝土构件损伤模型[J].兰州铁道学院学报(自然科学版),2000,19(3):25-27.LI Junqi,ZHAO Shichun. Damage Model of Reinforced ConcreteMember[J]. Journal of Lanzhou Railway University(NaturalSciences),2000,19(3):25-27.
[7]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 andModification of the Park-Ang Criterion for Failure of RC Structures[J]. Earthquake Engineering and Engineering Vibration. 2005,25(5):73-79.
[8]付国,刘伯权,邢国华.基于有效耗能的改进Park-Ang双参数损伤模型及其计算研究[J].工程力学,2013,30(7):84-90.FU Guo,LIU Boquan,XING Guohua. The Research and Calculationon Modified Park-Ang Double Parameter Seismic Damage ModelBased on Energy Dissipation[J]. Engineering Mechanics,2013,30(7):84-90.
[9]罗文文,李英民,韩军.考虑加载路径影响的改进Park-Ang损伤模型[J].工程力学,2014. 31(7):112-128.LUO Wenwen,LI Yingmin,HAN Jun. A Modified Park-Ang SeismicDamage Model Considering the Load Path Effects[J]. EngineeringMechanics,2014,31(7):112-128.
[10]陈林之,蒋欢军,吕西林,等.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,LV Xilin,et al. Modified Park-AngDamage Model for Reinforced Concrete Structures[J]. Journal ofTongji University(Natural Science),2010,38(8):1103-1107.
[11]曾武华,王逢朝,卓卫东.采用变形与能量双重准则的钢筋混凝土桥墩地震损伤模型[J].华侨大学学报,2016,37(4):441-446.ZENG Wuhua,WANG Fenghao,ZHUO Weidong. Deformation andEnergy-based Seismic Damage Model of Reinforced Concrete BridgePiers[J]. Journal of Huaqiao University(Natural Science),2016,37(4):441-446.
[12]杜晓菊,张耀庭.钢筋混凝土构件损伤模型的比较研究[J].地震工程与工程振动,2015,35(4):222-229.DU Xiaoju, ZHANG Yaoting. A Comparative Study on DamageModels for Reinforced Concrete Members[J]. EarthquakeEngineering and Engineering Vibration,2015,35(4):222-229.