Seismic Performance Evaluation of Masonry-Infilled Frame Structures using Equivalent Strut Models

Park, Jihun; Jeon, Seong-Ha; Kang, Kyung-Soo

doi:10.5000/eesk.2012.16.1.047

Cited by 9 publications

(1 citation statement)

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“…, Paulay and Priestley [2], Kappos et al [3], Stafford Smith [4], Dolsek and Fajfar [5], Crisafulli [6] 등에 의해 제안되 었다. 국내에서도 고현 등 [7], 문기훈 등 [8] , 박지훈 등 [9] Kim HC et al [13] UBC [17] FEMA 356 [16] Paulay and Priestley [2] Lee WH et al [12] Masonry Designers' Guide [18] FEMA 356 [16] Lee WH et al [12]…”

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A Comparison Study of Equivalent Strut Models for Seismic Performance Evaluation of Masonry-Infilled Frame

유은종¹,

김민재²,

정대계³

2014

Journal of the Earthquake Engineering Society of Korea

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Masonry-infilled walls have been used in reinforced concrete(RC) frame structures as interior and exterior partition walls. Since these walls are considered as nonstructural elements, they were only considered as additional mass. However, infill walls tend to interact with the structure's overall strength, rigidity, and energy dissipation. Infill walls have been analyzed by finite element method or transposed as equivalent strut model. The equivalent strut model is a typical method to evaluate masonry-infilled structure to avoid the burden of complex finite element model. This study compares different strut models to identify their properties and applicability with regard to the characteristics of the structure and various material models.

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A Comparison Study of Equivalent Strut Models for Seismic Performance Evaluation of Masonry-Infilled Frame

유은종¹,

김민재²,

정대계³

2014

Journal of the Earthquake Engineering Society of Korea

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Investigation of Diagonal Strut Actions in Masonry-Infilled Reinforced Concrete Frames

Lee

Eom

2021

Int J Concr Struct Mater

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This study analytically investigated the behavior of reinforced concrete frames with masonry infills. For the analysis, VecTor2, a nonlinear finite element analysis program that implements the Modified Compression Field Theory and Disturbed Stress Field Model, was used. To account for the slip behavior at the mortar joints in the masonry element, the hyperbolic Mohr–Coulomb yield criterion, defined as a function of cohesion and friction angle, was used. The analysis results showed that the lateral resistance and failure mode of the infilled frames were significantly affected by the thickness of the masonry infill, cohesion on the mortar joint–brick interface, and poor mortar filling (or gap) on the masonry boundary under the beam. Diagonal strut actions developed along two or three load paths on the mortar infill, including the backstay actions near the tension column and push-down actions near the compression columns. Such backstay and push-down actions increased the axial and shear forces of columns, and ultimately affect the strength, ductility, and failure mode of the infilled frames.

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Seismic Reinforcement of Rural Low-rise Building using Carbon Fiver Plate

Jung¹,

Choi²

2014

Journal of the Korean Institute of Rural Architecture

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In the past, Korea was classified as a region not affected by earthquakes. However, recent increase of earthquakes has forced to strengthen standards of earthquake resistant designs of structures to minimize seismic damage. In addition, it was thought that masonry infill walls in buildings are only acting as partitions, so these walls are not considered in analyzing building structures. But it was found that when seismic loads are applied to a structure with masonry infill walls, the walls affect the structure. Accordingly, this study conducted nonlinear static analyses for a structure constructed before applying earthquake resistant designs in two cases: when considering masonry walls and when not. The result showed that the seismic performance of the structure is insufficient. Thus, the structural resistance of the structure was also studied in two cases: when reinforcing with steel plate braces and when using carbon fiber braces. In the two cases reinforcing two different stiffeners, it was appeared that the behaviors of the structure were similar, though the cross-section area of a carbon fiber brace used to reinforcing the structure is only 12.6% of a steel plate brace, and its weight is only 2.8%. Thus, the reinforcing effect of the thin, light-weighted carbon fiber brace is much larger than that of the steel plate brace, when considering usability and constructability of both materials. 키 워 드 : 조적벽, 비선형정적해석, 탄소섬유판, 내진보강

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Seismic Performance Evaluation of Masonry-Infilled Frame Structures using Equivalent Strut Models

Cited by 9 publications

References 1 publication

A Comparison Study of Equivalent Strut Models for Seismic Performance Evaluation of Masonry-Infilled Frame

A Comparison Study of Equivalent Strut Models for Seismic Performance Evaluation of Masonry-Infilled Frame

Investigation of Diagonal Strut Actions in Masonry-Infilled Reinforced Concrete Frames

Seismic Reinforcement of Rural Low-rise Building using Carbon Fiver Plate

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