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Analysis of the seismic vulnerability of eccentrically supported pier columns of curved bridges under different variable pier height forms
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Chiyu JIAO1, 2, 3, Chenchen WANG3, Yang LIU4, Rong FANG5, Chun XIAO6
Earthquake Engineering and Engineering Dynamics | 2025, 45(2) : 97 - 105
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Earthquake Engineering and Engineering Dynamics | 2025, 45(2): 97-105
Analysis of the seismic vulnerability of eccentrically supported pier columns of curved bridges under different variable pier height forms
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Chiyu JIAO1, 2, 3, Chenchen WANG3, Yang LIU4, Rong FANG5, Chun XIAO6
Affiliations
  • 1.Beijing Urban Transportation Infrastructure Construction Engineering Technology Research Center, Beijing 100044, China
  • 2.Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
  • 3.Ancient Bridge Research Institute, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
  • 4.Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • 5.Multi-Functional Shaking Tables Laboratory, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
  • 6.Eternal Estate Engineering Design Co., Ltd., Chengdu 610017, China
Published: 2025-04-24 doi: 10.13197/j.eeed.2025.0209
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Due to the influence of topography and traffic routes, small radius curved bridges with eccentrically support piers and variable pier heights are widely used. Due to the irregularity of the bridge caused by the difference in pier heights and the eccentric supports, a complex stress form of pressure-bending-shearing-torsion coupling in the eccentrically support pier will occur. Taking an interchange ramp bridge as the engineering background, a centralized hinge-fiber model based on nonlinear finite element software was constructed. The seismic vulnerability of eccentrically compressed piers in two models was compared by adopting the incremental dynamic analysis method. These two models include a model with the concave-type variable height piers (the CTVHP curved bridge) and a model with gradient variable height piers (the GVHP curved bridge). The results show that: in the small radius bridge with eccentrically support pier and variable pier heights, the probability of torsional damage of the intermediate pier is higher. When the pier torsional damage occurs, the exceeding probability of each pier damage level in the CTVHP curved bridge is greater than that in the GVHP curved bridge, which will lead to more serious torsional damage. Therefore the arrangement of the CTVHP curved bridge should be avoided in seismic design, at the same time, the seismic capacity of the intermediate pier should be enhanced. The research results of this paper can provide a basis for similar bridges.

curved bridge  /  eccentric surport pier columns  /  arrangement form of variable pier height  /  coupling action of compression-bending-shear-torsion  /  seismic vulnerability analysis
Chiyu JIAO, Chenchen WANG, Yang LIU, Rong FANG, Chun XIAO. Analysis of the seismic vulnerability of eccentrically supported pier columns of curved bridges under different variable pier height forms[J]. Earthquake Engineering and Engineering Dynamics, 2025 , 45 (2) : 97 -105 . DOI: 10.13197/j.eeed.2025.0209
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Year 2025 volume 45 Issue 2
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Article Info
doi: 10.13197/j.eeed.2025.0209
  • Receive Date：2024-03-13
  • Online Date：2026-03-20
  • Published：2025-04-24
Article Data
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History
  • Received：2024-03-13
  • Revised：2024-05-12
Funding
Affiliations
    1.Beijing Urban Transportation Infrastructure Construction Engineering Technology Research Center, Beijing 100044, China
    2.Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
    3.Ancient Bridge Research Institute, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
    4.Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
    5.Multi-Functional Shaking Tables Laboratory, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
    6.Eternal Estate Engineering Design Co., Ltd., Chengdu 610017, China
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表12种不同金属材料的力学参数
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Number of
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Number of
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Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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