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Title |
Evaluation of Seismic Response of Masonry Walls Strengthened with Steel-bar Truss Systems by Non-linear Finite Element Analysis
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Authors |
황승현(Seung-Hyeon Hwang) ; 양근혁(Keun-Hyeok Yang) ; 김상희(Sang-Hee Kim) ; 임진선(Jin-Sun Lim) ; 임채림(Chae-Rim Im) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.4.20 |
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Keywords |
조적벽; 강봉 트러스 시스템; 보강; 비선형 유한요소해석 Masonry walls; Steel-bar truss system; Strengthening; Non-linear finite element analysis |
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Abstract |
The present study presents a nonlinear finite element analysis (FEA) approach using the general program of Abaqus to evaluate the seismicresponse of unreinforced masonry walls strengthened with the steel bar truss system developed in the previous investigation. For finite element modelsof masonry walls, the concrete damaged plasticity (CDP) and meso-scale methods were considered on the basis of the stress-strain relationships undercompression and tension and shear friction-slip relationship of masonry prisms proposed by Yang et al. in order to formulate the interface characteristicsbetween brick elements and mortars. The predictions obtained from the FEA approach were compared with test results under different designparameters; as a result, a good agreement could be observed with respect to the crack propagation, failure mode, rocking strength, peak strength, andlateral load-displacement relationship of masonry walls. Thus, it can be stated that the proposed FEA approach shows a good potential for designingthe seismic strengthening of masonry walls.
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