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Typical seismic damage characteristics of bridges in the Ms6.2 Jishishan earthquake
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Dezhang SUN1, 2, Yuxuan PENG1, 2, Shizhou YU1, 2, Peilei YAN1, 2, Haoyu ZHANG1, 2, Yong HUANG1, 2, Guibo NIE1, 2
Earthquake Engineering and Engineering Dynamics | 2024, 44(2) : 224 - 232
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Earthquake Engineering and Engineering Dynamics | 2024, 44(2): 224-232
Typical seismic damage characteristics of bridges in the Ms6.2 Jishishan earthquake
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Dezhang SUN1, 2, Yuxuan PENG1, 2, Shizhou YU1, 2, Peilei YAN1, 2, Haoyu ZHANG1, 2, Yong HUANG1, 2, Guibo NIE1, 2
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
doi: 10.13197/j.eeed.2024.0223
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This article mainly presents the investigation of bridges located in seismic intensity 8 degree and 7 degree zones on 306 Provincial Road, 310 National Road and Chuanting Highway. Peak acceleration of over 900 cm/s2 was recorded at station GS. N0028 in the town of Dahejia, far exceeding the local rare earthquake fortification standard. However, the investigation results show that the bridges in the intensity 8 degree zone were mainly slightly damaged, including restrainer damage, lateral displacement of the main girder and bearing sliding, except for one bridge on Chuanting Highway where shear cracks were found in the pier, no other bridge in this area was found that suffered main structural damage. Bridges in the intensity 7 degree zone were basically intact, with some rubber deformations and unrecoverable displacements in the rubber bearings, as well as changes in the distance between restrainers. Fortunately, these issues did not affect their functionality. Concrete restrainer, as a measure to prevent lateral displacement of the main beam, has shown effectiveness in seismic damage, and is lack of rapid recovery characteristics. At the same time, the restrainer that installed cushion rubber pad also suffered severe damage, therefore, improving the cushioning device and considering the quick recovery of performance are needed in the future studies.

Jishishan earthquake  /  Dahejia Yellow River Bridge  /  restrainer damage  /  bearing sliding  /  seismic damage of abutment
Dezhang SUN, Yuxuan PENG, Shizhou YU, Peilei YAN, Haoyu ZHANG, Yong HUANG, Guibo NIE. Typical seismic damage characteristics of bridges in the Ms6.2 Jishishan earthquake[J]. Earthquake Engineering and Engineering Dynamics, 2024 , 44 (2) : 224 -232 . DOI: 10.13197/j.eeed.2024.0223
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Year 2024 volume 44 Issue 2
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doi: 10.13197/j.eeed.2024.0223
  • Receive Date：2024-01-29
  • Online Date：2026-03-30
Article Data
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  • Received：2024-01-29
  • Revised：2024-02-19
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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
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https://castjournals.cast.org.cn/joweb/dzgcygczd/EN/10.13197/j.eeed.2024.0223
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Citations
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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