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Analysis of internal force and deformation concentration effects in dumbbell-shaped walls of masonry structures
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Ruofan LUO1, 2, Xun GUO2, 3, Xiaoyao DONG2, Jijiao WU3, A Lata4
Earthquake Engineering and Engineering Dynamics | 2025, 45(2) : 155 - 163
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Earthquake Engineering and Engineering Dynamics | 2025, 45(2): 155-163
Analysis of internal force and deformation concentration effects in dumbbell-shaped walls of masonry structures
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Ruofan LUO1, 2, Xun GUO2, 3, Xiaoyao DONG2, Jijiao WU3, A Lata4
Affiliations
  • 1.School of Civil Engineering, Jiaying University, Meizhou 514015, China
  • 2.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
  • 3.Institute of Disaster Prevention, Key Laboratory of Building Failure Mechanism and Disaster Prevention, China Earthquake Administration, Sanhe 065201, China
  • 4.Yunnan Earthquake Agency, Kunming 650041, China
Published: 2025-04-24 doi: 10.13197/j.eeed.2025.0215
Outline
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Based on the actual damage and the mechanical characteristics of the component, a dumbbell-shaped component is proposed by dividing the wall units along the midline of the span. To verify the phenomenon of internal force and deformation concentration during the loading process of dumbbell-shaped components, quasi-static tests of rectangular and dumbbell-shaped components with equal initial stiffness were designed. Wall shear strains and relative displacements at different positions were tested. The analysis results show that the dumbbell-shaped components undergo shear failure first, with damage concentrated between windows, causing the floor to collapse vertically along the side of the dumbbell-shaped component. Shear strains on the cross-section of dumbbell-shaped components are significantly higher than those of rectangular components, and the strain ratio gradually increases with displacement. Relative displacements on the upper and lower sides of the wall between windows indicate that as the loading displacement increases, the ratio of the upper wall to the wall between windows gradually decreases, while the displacement ratio between the wall between windows and the lower wall gradually increases. Both strain and displacement indicate that during the deformation process, internal forces and deformations gradually concentrate towards the wall between windows. Based on the analysis results, the collapse mechanisms of masonry structures and masonry-frame hybrid structures are discussed.

masonry structures  /  dumbbell-shaped component  /  internal force and deformation concentration  /  masonry-frame hybrid structures  /  collapse mechanism
Ruofan LUO, Xun GUO, Xiaoyao DONG, Jijiao WU, A Lata. Analysis of internal force and deformation concentration effects in dumbbell-shaped walls of masonry structures[J]. Earthquake Engineering and Engineering Dynamics, 2025 , 45 (2) : 155 -163 . DOI: 10.13197/j.eeed.2025.0215
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Year 2025 volume 45 Issue 2
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Article Info
doi: 10.13197/j.eeed.2025.0215
  • Receive Date：2024-05-06
  • Online Date：2026-03-20
  • Published：2025-04-24
Article Data
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History
  • Received：2024-05-06
  • Revised：2024-06-26
Funding
Affiliations
    1.School of Civil Engineering, Jiaying University, Meizhou 514015, China
    2.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
    3.Institute of Disaster Prevention, Key Laboratory of Building Failure Mechanism and Disaster Prevention, China Earthquake Administration, Sanhe 065201, China
    4.Yunnan Earthquake Agency, Kunming 650041, China
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表12种不同金属材料的力学参数
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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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