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Earthquake Damage and Mechanism Analysis on Multi-story Buildings in the Luding Earthquake
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Ce DONG1, Xun GUO2, *, Ruo-fan LUO3, 4, Qin-zhe ZHANG2, Xiao-yao DONG3, Jun ZHANG3, Bo WANG2
Science Technology and Engineering | 2025, 25(5) : 2049 - 2056
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Science Technology and Engineering | 2025, 25(5): 2049-2056
• Papers·Architectural Science •
Earthquake Damage and Mechanism Analysis on Multi-story Buildings in the Luding Earthquake
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Ce DONG1, Xun GUO2, *, Ruo-fan LUO3, 4, Qin-zhe ZHANG2, Xiao-yao DONG3, Jun ZHANG3, Bo WANG2
Affiliations
  • 1 Institute of Geophysics, CEA, Beijing 100081, China
  • 2 Institute of Disaster Prevention, Key Laboratory of Building Collapse Mechanism and Disaster Prevention, China Earthquake Administration, Sanhe 065201, China
  • 3 Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
  • 4 School of Civil Engineering, Jiaying University, Meizhou 514015, China
Published: 2025-02-18 doi: 10.12404/j.issn.1671-1815.2309636
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In September 5, 2022, a M6.8 earthquake occurred in Luding County Sichuan Province. Quite a lot of store-front type buildings damaged or collapsed. Five representative buildings representing both positive and negative aspects were selected to analyze the earthquake damage mechanism through theoretical basis and model experiment. The results show that the earthquake damage is mainly concentrated in the bottom layer, which is composed of concrete column and masonry wall. The masonry wall with no lateral openings restrains the transverse and torsional deformation of the structure, and the floor only transports along the longitudinal direction, and the seismic shear force shared by each member is proportional to its longitudinal lateral stiffness. The rigid and brittle members with large stiffness will appear “internal force condensation”, and then reach “deformation saturation”, and lose the load-bearing capacity in the way of brittle failure, and the gravity of the upper layers will be borne by the transverse wall. If the earthquake does not stop at this time, the transverse wall will lose the role of “buttress” in the direction of exit plane, and the whole structure will collapse along the longitudinal contact with the ground. On the contrary, if the structure of the bottom layer avoids large differences in stiffness, it can significantly improve the seismic resistance.

Luding earthquake  /  multi-story building  /  damage mechanism  /  shear force concentration  /  deformation saturation
Ce DONG, Xun GUO, Ruo-fan LUO, Qin-zhe ZHANG, Xiao-yao DONG, Jun ZHANG, Bo WANG. Earthquake Damage and Mechanism Analysis on Multi-story Buildings in the Luding Earthquake[J]. Science Technology and Engineering, 2025 , 25 (5) : 2049 -2056 . DOI: 10.12404/j.issn.1671-1815.2309636
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Article Info
doi: 10.12404/j.issn.1671-1815.2309636
  • Receive Date：2023-12-06
  • Online Date：2025-07-29
  • Published：2025-02-18
Article Data
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History
  • Received：2023-12-06
  • Revised：2024-07-19
Funding
Affiliations
    1 Institute of Geophysics, CEA, Beijing 100081, China
    2 Institute of Disaster Prevention, Key Laboratory of Building Collapse Mechanism and Disaster Prevention, China Earthquake Administration, Sanhe 065201, China
    3 Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
    4 School of Civil Engineering, Jiaying University, Meizhou 514015, 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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