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Typical seismic damage characteristics of bridges in the MS6.8 Dingri earthquake in Xizang
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Dezhang SUN1, 2, Yuxuan PENG1, 2, Xuchuan LIN1, 2, Yiqiu LU3, Xinsheng MA1, 2, Yong HUANG1, 2, Hongyu LEI4
Earthquake Engineering and Engineering Dynamics | 2025, 45(5) : 18 - 26
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Earthquake Engineering and Engineering Dynamics | 2025, 45(5): 18-26
• Special Section：Topic on Dingri MS6.8 Earthquake in Xizang on January 7, 2025 •
Typical seismic damage characteristics of bridges in the MS6.8 Dingri earthquake in Xizang
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Dezhang SUN1, 2, Yuxuan PENG1, 2, Xuchuan LIN1, 2, Yiqiu LU3, Xinsheng MA1, 2, Yong HUANG1, 2, Hongyu LEI4
Affiliations
  • 1.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
  • 2.Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China
  • 3.Tongji University, Department of Structural Disaster Prevention and Reduction Engineering, School of Civil Engineering, Shanghai 200092, China
  • 4.Yunnan Fengwei Expressway Co., Ltd., Lincang 677000, China
Published: 2025-10-22 doi: 10.13197/j.eeed.2025.0503
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On January 7, 2025, a magnitude 6.8 earthquake struck the Dingri region of Xizang Autonomous Region, resulting in certain damage to bridge structures. Based on field investigations, this paper primarily documents the seismic damage observed at the following bridges: Bridge No.1 and Bridge No.2 on County Road Guoqu X222, the Zacun No.2 Bridge on G219 Gading Line, and the Jijiao Bridge in Sakya County. Furthermore, the failure causes of the seismic damage to structural components in each bridge are preliminarily analyzed by integrating information such as the positional relationship between the main fault and the bridges, and ground motion records from seismic stations. The bridges damaged in this earthquake were predominantly of hollow slab girder structures, with the seismic damage primarily manifesting as minor destruction. Key observations include severe damage to the slope protection of abutments, lateral displacement of main girders without failure of the restraining block, and multiple instances of cracking or crushing in the bearing pedestals. Finally, this paper summarizes the lessons and techinical insights that are of practical guiding value.

Dingri earthquake  /  hollow slab girder  /  bearing pedestal  /  slope protection of abutments  /  restraining block
Dezhang SUN, Yuxuan PENG, Xuchuan LIN, Yiqiu LU, Xinsheng MA, Yong HUANG, Hongyu LEI. Typical seismic damage characteristics of bridges in the MS6.8 Dingri earthquake in Xizang[J]. Earthquake Engineering and Engineering Dynamics, 2025 , 45 (5) : 18 -26 . DOI: 10.13197/j.eeed.2025.0503
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Year 2025 volume 45 Issue 5
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Article Info
doi: 10.13197/j.eeed.2025.0503
  • Receive Date：2025-03-07
  • Online Date：2026-03-20
  • Published：2025-10-22
Article Data
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History
  • Received：2025-03-07
  • Revised：2025-07-25
Funding
Affiliations
    1.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
    2.Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China
    3.Tongji University, Department of Structural Disaster Prevention and Reduction Engineering, School of Civil Engineering, Shanghai 200092, China
    4.Yunnan Fengwei Expressway Co., Ltd., Lincang 677000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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