1.西南交通大学土木工程学院,四川 成都 610031
2.四川汶马高速公路有限责任公司,四川 成都 610041
何海峰(1995—),男,硕士研究生。主要从事深水大跨桥梁、桥梁抗震研究。E-mail: hhf3201@163.com
魏凯(1984—),男,副教授,博士。主要从事深水大跨桥梁、桥梁抗震研究。E-mail: kaiwei@home.swjtu.edu.cn
收稿:2019-04-26,
修回:2019-06-04,
纸质出版:2021-06-16
移动端阅览
何海峰,魏凯,何成.考虑冲刷影响的川藏线连续梁桥横向地震易损性分析[J].防灾减灾工程学报,2021,41(03):441-447.
HE Haifeng,WEI Kai,HE Cheng.Lateral Seismic Fragility Analyses of the Continuous Beam Bridge on the Sichuan⁃Tibet Route Considering Scour Effect[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(03):441-447.
何海峰,魏凯,何成.考虑冲刷影响的川藏线连续梁桥横向地震易损性分析[J].防灾减灾工程学报,2021,41(03):441-447. DOI: 10.13409/j.cnki.jdpme.201904083.
HE Haifeng,WEI Kai,HE Cheng.Lateral Seismic Fragility Analyses of the Continuous Beam Bridge on the Sichuan⁃Tibet Route Considering Scour Effect[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(03):441-447. DOI: 10.13409/j.cnki.jdpme.201904083.
冲刷将减小土体对桥梁基础的横向支撑作用,削弱桥梁结构刚度,进而影响桥梁结构的动力学特性和抗震性能,因此有必要研究冲刷对桥梁结构抗震性能的影响。以川藏线常见的三跨连续梁桥为工程背景,利用有限元软件SAP2000建立桥梁结构有限元模型,利用m法考虑桩土相互作用,讨论了冲刷深度变化对桥梁结构动力学特性的影响。选取曲率延性作为桥墩和桩基的损伤指标,考虑材料和几何非线性,通过增量动力分析方法得到不同横向地震动强度下桥墩和桩基的峰值曲率,建立了不同冲刷深度下桥墩、桩基在轻微损伤、中等损伤、严重损伤以及完全破坏状态下的地震易损性曲线。研究结果表明:冲刷深度增加将增大桥梁结构自振周期;桥墩在各损伤状态下的损伤概率随冲刷深度的增大而不断减小;冲刷深度较小时,桩基的损伤概率随冲刷深度增加而增大,但当冲刷深度超过某一值时,桩基的损伤概率反而有所减小。
Xuan G , Wu Y , Guo Y . Time-dependent seismic fragility analysis of bridge systems under scour hazard and earthquake loads [J]. Engineering Structures , 2016 , 121 : 52 - 60 .
Blanco G , Ye A , Wang X W , et al . Parametric pushover analysis on elevated RC pile-cap foundations for bridges in cohesionless soils [J]. Journal of Bridge Engineering , 2019 , doi: 10.1061/(ASCE)BE.1943-5592.0001328 http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0001328 .
Wang X , Ye A , He Z , et al . Quasi-static cyclic testing of elevated RC pile-cap foundation for bridge structures [J]. Journal of Bridge Engineering , 2016 , 21 ( 2 ): 4015042 .
叶爱君 , 张喜刚 , 刘伟岸 . 河床冲刷深度变化对大型桩基桥梁地震反应的影响 [J]. 土木工程学报 , 2007 , 40 ( 3 ): 58 - 62 .
Ye A J , Zhang X G , Liu W A . Effects of riverbed scouring depth on the seismic response of bridges on pile foundation [J]. China Civil Engineering Journal , 2007 , 40 ( 3 ): 58 - 62 . (in Chinese)
Wang Z , Dueñas-Osorio L , Padgett J E , et al . Influence of scour effects on the seismic response of reinforced concrete bridges [J]. Engineering Structures , 2014 , 76 : 202 - 214 .
梁发云 , 刘兵 , 李静茹 . 考虑冲刷作用效应桥梁桩基地震易损性分析 [J]. 地震工程学报 , 2017 , 39 ( 1 ): 13 - 19 .
Liang F Y , Liu B , Li J R . Seismic fragility analysis of bridge pile foundation considering scour effect [J]. China Earthquake Engineering Journal , 2017 , 39 ( 1 ): 13 - 19 . (in Chinese)
Prasad G G , Banerjee S . The impact of flood-induced scour on seismic fragility characteristics of bridges [J]. Journal of Earthquake Engineering , 2013 , 17 ( 6 ): 803 - 828 .
刘兵 , 梁发云 , 彭君 . 地震与洪水作用下桥墩基础易损性曲线与回归分析 [J]. 结构工程师 , 2016 , 32 ( 6 ): 155 - 161 .
Liu B , Liang F Y , Peng J . Fragility analysis and parameters regression of bridge foundation under the combined action of earthquake and flood [J]. Structural Engineers , 2016 , 32 ( 6 ): 155 - 161 . (in Chinese)
李宏男 , 成虎 , 王东升 . 桥梁结构地震易损性研究进展述评 [J]. 工程力学 , 2018 , 35 ( 9 ): 1 - 16 .
Li H N , Cheng H , Wang D Sh . A review of advances in seismic fragility research on bridge structures [J]. Engineering Mechanics , 2018 , 35 ( 9 ): 1 - 16 . (in Chinese)
Cornell C A , Jalayer F , Hamburger R O , et al . Probabilistic basis for 2000 SAC federal emergency management agency steel moment frame guidelines [J]. Structural Engineering , 2002 , 128 ( 4 ): 526 - 533 .
Agency F E M . Hazards99 user's manual [R]. Washington DC :
s . n . ] , 1999 .
Hwang H , Jernigan J B , Lin Y W . Evaluation of seismic damage to memphis bridges and highway systems [J]. Journal of Bridge Engineering , 2000 , 5 ( 4 ): 322 - 330 .
公路桥梁抗震设计细则 : JTG/T B02-01—2008 [S]. 北京 : 人民交通出版社 , 2008 .
公路桥涵地基与基础设计规范 : JTG D63—2007 [S]. 北京 : 人民交通出版社 , 2007 .
0
浏览量
0
下载量
1
CSCD
关联资源
相关文章
相关作者
相关机构
苏公网安备32010202012147号
