On the modelling of infilled RC frames through strut models

Tanganelli, Marco; Rotunno, Tommaso; Viti, Stefania

doi:10.1080/23311916.2017.1371578

Cited by 11 publications

(3 citation statements)

References 21 publications

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“…However, on the other hand, this method has the disadvantage of being unable to predict the shape of the deflection that occurs in the column and then produces shallow bending moment and shear force values [32,33]. Meanwhile, Kumar [34], El-Dakhakhni [35], Tanganelli [36] and Pashaie [37] argue that multi-struts modeling can produce the closest bending moment values when validated using a numerical model using FEM Software. The approach of this model is to make the bricks, mortar and brick-mortar interfaces, or together with the frame, into a different continuum element [29].…”

Section: (C) Macro Modelingmentioning

confidence: 99%

Damage States Investigation of Infilled Frame Structure Based on Meso Modeling Approach

et al. 2023

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The non-linear behavior of infilled frames is very complex. The behavior of this structure may be studied by experimental and numerical approaches. An experimental test can provide a more realistic output but has the disadvantages of high costs, relatively long time and specific room usage. A numerical analysis can be an alternative to analyze the behavior of infilled frames. One of the most powerful numerical approaches is meso-modeling. This approach has the advantage of being able to capture local damage to the panel. For this reason, the progressive damage identified in the meso-model can be used as a basis for determining damage state criteria. The grouping of damage states is proposed based on the initial identification in the form of local damage linked to global damage, i.e., IDR. This study’s proposed level of infilled frame damage is DS1 = 0.17%, DS2 = 0.52%, DS3 = 0.79% and DS4 = 1.99%. However, the quantification results of the structural damage level cannot be generalized because many complex factors influence the behavior of infilled frames. Subsequently, a parametric study was carried out to determine the contribution of the mechanical properties of the infilled frame material to the degree of structural damage.

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Section: (C) Macro Modelingmentioning

confidence: 99%

Damage States Investigation of Infilled Frame Structure Based on Meso Modeling Approach

et al. 2023

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“…In the literature, the strut is usually assumed as a diagonal member with the same material and thickness as the infill, as shown in Figure 14 . Many formulas have been suggested for its width, Ts [ 37 ]. Since most infill materials have low tensile strength, the strut typically woks in compression or possesses a nonlinear backbone force-displacement curve [ 38 ].…”

Section: Equivalent Strut Macro-modelmentioning

confidence: 99%

Operational Modal Analysis, Testing and Modelling of Prefabricated Steel Modules with Different LSF Composite Walls

et al. 2020

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The modal properties of modular structures, such as their natural frequencies, damping ratios and mode shapes, are different than those of conventional structures, mainly due to different structural systems being used for assembling prefabricated modular units onsite. To study the dynamic characteristics of modular systems and define a dynamic model, both the modal properties of the individual units and their connections need to be considered. This study is focused on the former aspect. A full-scale prefabricated volumetric steel module was experimentally tested using operational modal analysis technique under pure ambient vibrations and randomly generated artificial hammer impacts. It was tested in different situations: [a] bare (frame only) condition, and [b] infilled condition with different configurations of gypsum and cement-boards light-steel framed composite walls. The coupled module-wall system was instrumented with sensitive accelerometers, and its pure and free vibration responses were synchronously recorded through a data acquisition system. The main dynamic characteristics of the module were extracted using output-only algorithms, and the effects of the presence of infill wall panels and their material are discussed. Then, the module’s numerical micromodel for bare and infilled states is generated and calibrated against experimental results. Finally, an equivalent linear strut macro-model is proposed based on the calibrated data. The contribution of this study is assessing the effects of different infill wall materials on the dynamic characteristics of modular steel units, and proposing simple models for macro-analysis of infilled module assemblies.

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“…Brick walls in buildings are considered non-structural and function as insulation or filler. In fact, brick walls also contribute strength to the structure, although it is small (Dawe and Seah;, 1989;Francisco J. Crisafulli, 1997;Tanganelli et al, 2018;Tomaževič, 2009). In simple houses and onestory public facility buildings, brick walls have a significant contribution, this is shown by the two functions received by brick walls, namely as insulation and transfer as well as resisting forces or functioning as a structure (Asteris et al, 2015;Farooquddin, 2000;Kałuża, 2020;Uğurlu et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Laboratory Tests of the Area of Head Joints and Bed Joints Increase the Diagonal Shear Stress of Brick Walls

Marwahyudi,

Rifai,

Ahwan

2024

Astonjadro

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The strength of a brick wall is influenced by the failure of the mortar bond and the resistance of the bad joint and head joint when carrying the force. The wider the head joint and bad joint areas result in a wider bonded area which increases the diagonal shear strength of the wall. Residential walls that have increased ability to withstand diagonal shear forces will be more stable when subjected to earthquake lateral forces. This research formulates that the wider the connecting area of the body and head joint, the higher the diagonal shear strength. The test was carried out by making a square test object measuring 60 x 60 cm. then pressure is applied in the diagonal direction. At the time of setting up the test object is done carefully and thoroughly. The test object is positioned perpendicular to the diagonal direction. The test object is placed absolutely perpendicular and is given a load until it is completely damaged. Loading method by providing a force that increases regularly until the structure experiences a complete failure. The bonded area in each brick shape is measured and compared with the results of the diagonal shear strength. This value is analyzed to obtain the effect on the diagonal shear strength. The percentage effect of each brick shape is compared and the results are analyzed. The results of the analysis are to obtain justification whether the area of the bad joint and head joint affects the diagonal shear strength. The novelty of this research is to obtain several brick designs that increase the strength of the diagonal shear stress. Tests show that the greater the area of the head joint, the greater the value of the diagonal shear stress.

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On the modelling of infilled RC frames through strut models

Cited by 11 publications

References 21 publications

Damage States Investigation of Infilled Frame Structure Based on Meso Modeling Approach

Damage States Investigation of Infilled Frame Structure Based on Meso Modeling Approach

Operational Modal Analysis, Testing and Modelling of Prefabricated Steel Modules with Different LSF Composite Walls

Laboratory Tests of the Area of Head Joints and Bed Joints Increase the Diagonal Shear Stress of Brick Walls

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