适应扭转的新型自复位桥墩抗震性能研究
Seismic Performance Study of a New Self-Centering Torsion-Adaptable Bridge Pier
为解决小半径曲线桥下固定墩耦合受力出现塑性损伤难以修复的问题,提出一种适应扭转的新型预应力混凝土自复位桥墩。基于ABAQUS建立桥墩数值模型,在验证模型可靠性的基础上,设计了适应扭转的履带式金属阻尼器,研究压弯以及压弯扭耦合受力下单个桥墩的受力特征,比较履带式阻尼器钢板厚度、圆弧段曲率半径以及墩柱轴压比等参数的影响,从能量角度分析上述参数对结构抗震性能的影响。结果表明:履带式阻尼器具有良好的耗能能力和塑性变形能力,可以作为适应扭转自复位桥墩的耗能组件,能够在极限状态下保持稳定性能,避免了快速承载力下降和严重损伤;其次,在扭转荷载作用下,新型自复位桥墩展现出更好的承载能力和适应性,尽管承载力有所下降,但仍保持了一定的耗能能力。
To address the issue of plastic damage in fixed piers under coupled loading conditions (such as combined axial compression, bending, and torsion) in small-radius curved bridges, which is difficult to repair, a novel torsion-adaptable prestressed concrete self-centering pier is proposed. Based on ABAQUS, a numerical model of the pier was established and validated for reliability. A torsion-adaptable crawler-type metallic damper was designed as the energy-dissipating component. The mechanical behavior of the single pier under axial compression-bending and axial compression-bending-torsion coupled loading conditions was investigated. The effects of key parameters, including the steel plate thickness of the crawler-type damper, the curvature radius of the arc segment, and the axial compression ratio of the pier, were studied. The influence of these parameters on the seismic performance of the structure was analyzed from an energy perspective. The results demonstrate that the crawler-type damper exhibits excellent energy dissipation capacity and plastic deformation ability, making it a suitable energy-dissipating component for torsion-adaptable self-centering piers. It maintains stable performance under extreme conditions, avoiding rapid load-bearing capacity degradation and severe damage. Furthermore, under torsional loading, the novel self-centering pier shows improved load-bearing capacity and adaptability. Although the load-bearing capacity decreases, it retains a certain level of energy dissipation capability. This study provides a theoretical basis and practical reference for the design of small-radius curved bridges.
| [1] |
LI J,YU L,LI Z,et al.Study on seismic performance of long-span railway continuous girder bridges in high seismic intensity region[J].International Journal of Critical Infrastructures,2020,16(4):310-327. |
| [2] |
谢海清,杨国静,何庭国.铁路矩形空心桥墩延性抗震设计简化计算方法[J].世界地震工程,2010,26(1):147-152. |
| [3] |
XIE Haiqing,YANG Guojing,HE Tingguo.Simplified method for ductile seismic design of railway rectangular hollow piers[J].World Earthquake Engineering,2010,26(1):147-152. (in Chinese) |
| [4] |
KIBBOUA A,KEHILA F,HEMAIDI-ZOURGUI N,et al.Ductility-based seismic vulnerability assessment of rc bridge piers[C]//International Congress and Exhibition "Sustainable Civil Infrastructures:Innovative Infrastructure Geotechnology".Springer,Cham,2018. |
| [5] |
范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001. |
| [6] |
FAN Lichu,WANG Zhiqiang.Seismic isolation design of bridges[M].Beijing:China Communications Press,2001.(in Chinese) |
| [7] |
庄军生.桥梁减震,隔震支座和装置[M].北京:中国铁道出版社,2012. |
| [8] |
ZHUANG Junsheng.Seismic damping and isolation bearings and devices for bridges[M].Beijing:China Railway Publishing House,2012.(in Chinese) |
| [9] |
ALI H E M,ABDEL-GHAFFAR A M.Modeling of rubber and lead passive-control bearings for seismic analysis[J].Journal of Structural Engineering,1995,121(7):1134-1144. |
| [10] |
WANG Changfeng,ZHAO Jikang,ZHU Long,et al.Effects of vertical excitation on the seismic performance of a seismically isolated bridge with sliding friction bearings[J].Earthquake Engineering and Engineering Vibration,2016,15(1):187-196. |
| [11] |
刘笑显,李建中,陈旭.X形弹塑性钢挡块对简支梁桥横向地震反应影响[J].振动与冲击,2015,34(2):143-149. |
| [12] |
LIU Xiaoxian,LI Jianzhong,CHEN Xu.Influence of X-shaped elastoplastic steel stoppers on transverse seismic response of simply supported beam bridges[J].Journal of Vibration and Shock,2015,34(2):143-149. |
| [13] |
PRIESTLEY M J N,SEIBLE F,CALVI G M.Seismic design and retrofit of bridges[M].Hoboken,New Jersey:John Wiley & Sons,1996. |
| [14] |
MANDER J B,CHENG C T.Seismic resistance of bridge piers based on damage avoidance design[R].Buffalo,N.Y.:National Center for Earthquake Engineering Research,State University of New York at Buffalo,1997.(Technical Report NCEER-97-0014) |
| [15] |
PALERMO A,PAMPANIN S,CALVI G M.Concept and development of hybrid solutions for seismic resistant bridge systems[J].Journal of Earthquake Engineering,2005,9(6):899-921. |
| [16] |
司炳君,谷明洋,孙治国,近断层地震动下摇摆-自复位桥墩地震反应分析[J].工程力学,2017,34(10):87-97. |
| [17] |
SI Bingjun,GU Mingyang,SUN Zhiguo,et al.Seismic response analysis of rocking self-centering bridge piers under near-fault ground motions[J].Engineering Mechanics,2017,34(10):87-97.(in Chinese) |
| [18] |
鲍泽华,李建中,李永兴,自复位桥墩耗能钢筋合理配筋率的设计方法研究[J].工程力学,2022,39(10):88-98,119. |
| [19] |
BAO Zehua,LI Jianzhong,LI Yongxing,et al.Research on design method for reasonable reinforcement ratio of energy-dissipating steel bars in self-centering bridge piers[J].Engineering Mechanics,2022,39(10):88-98,119.(in Chinese) |
| [20] |
OU Y C,WANG P H,TSAI M S,et al.Large-scale experimental study of precast segmental unbonded posttensioned concrete bridge columns for seismic regions[J].Journal of structural engineering,2010,136(3):255-264. |
| [21] |
ELGAWADY M,BOOKER A J,DAWOOD H M.Seismic behavior of posttensioned concrete-filled fiber tubes[J].Journal of Composites for Construction,2010,14(5):616-628. |
| [22] |
NIKBAKHT E,RASHID K,HEJAZI F,et al.Application of shape memory alloy bars in self-centring precast segmental columns as seismic resistance[J].Structure and Infrastructure Engineering,2015,11(3):297-309. |
| [23] |
MARRIOTT D,PAMPANIN S,PALERMO A.Quasi-static and pseudo-dynamic testing of unbonded post-tensioned rocking bridge piers with external replaceable dissipaters[J] Earthquake Engineering & Structural Dynamics,2009,38(3):331-354. |
| [24] |
GUERRINI G,RESTREPO J I,MASSARI M,et al.Seismic behavior of posttensioned self-centering precast concrete dual-shell steel columns[J].Journal of Structural Engineering,2015,141(4):04014115. |
| [25] |
郭佳.基于性能的新型自复位桥墩抗震理论与试验研究[D].北京:清华大学,2012. |
| [26] |
GUO Jia.Performance-based seismic theory and experimental research on novel self-centering bridge piers[D].Beijing:Tsinghua University,2012.(in Chinese) |
| [27] |
ZHONG X,SHEN Y,CHEN X,et al.Seismic performance of a novel hemisphere-based rocking hinge realizing self-centering damage-free bridge system[J].Engineering Structures,2024,298:117032. |
| [28] |
史军.带牺牲部件自复位桥墩拟静力试验研究[D].兰州:兰州交通大学,2021. |
| [29] |
SHI Jun.Quasi-static experimental study on self-centering bridge piers with sacrificial components[D].Lanzhou:Lanzhou Jiaotong University,2021.(in Chinese) |
| [30] |
CORMACK L G.The design and construction of the major bridges on the Mangaweka rail deviation[J].Transactions of the Institution of Professional Engineers New Zealand:Civil Engineering Section,1988,15(1):17-23. |
| [31] |
ROUTLEDGE P J,COWAN M J,PALERMO A.Low-damage detailing for bridges—a case study of Wigram-Magdala bridge[C]//Proceedings of the New Zealand Society for Earthquake Engineering 2016 Conference. Christchurch,New Zealand:New Zealand Society for Earthquake Engineering,2016. |
| [32] |
MASHAL M,PALERMO A.Low-damage seismic design for accelerated bridge construction[J].Journal of Bridge Engineering,2019,24(7):04019066. |
| [33] |
韩强,贾振雷,何维利,自复位双柱式摇摆桥梁抗震设计方法及工程应用[J].中国公路学报,2017,30(12):169-177. |
| [34] |
HAN Qiang,JIA Zhenlei,HE Weili,et al.Seismic design method and engineering application of self-centering double-column rocking bridges[J].China Journal of Highway and Transport,2017,30(12):169-177.(in Chinese) |
| [35] |
CHEN Y,CHEN C,JIANG H,et al.Study of an innovative graded yield metal damper[J].Journal of Constructional Steel Research,2019,160:240-254. |
| [36] |
ZHANG P,LI S,LIU Z,et al.Hysteretic behavior degeneration mechanism and damage evaluation of self-centering bridge pier system[J].Engineering Structures,2022,270:114895. |
国家自然科学基金资助项目(52378472)
国家自然科学基金资助项目(52078023)
北京市自科基金-北京市教委联合重点项目(23JH0014)
北京建筑大学建大领军人才计划B类(JDLJ20220807)
北京市博士后工作经费资助项目(2023-zz-137)
/
| 〈 |
|
〉 |