Numerical simulation of the behavior of l-shaped rc shear walls with staggered openings Authors Salem Merabti University of Khemis Miliana Layachi Guelmine University Mohamed El Bachir El Ibrahimi of Bordj Bou Arreridj https://lnkd.in/d996r9XC Mohamed Afkir University of Khemis-Miliana Zineddine Fekir University of Khemis-Miliana DOI: https://lnkd.in/dGAspyyV Keywords: Shear Walls, Reinforced Concrete, Offset Openings, Numerical Simulation, Stresses, Shear Forces, Top-floor displacements Abstract Reinforced concrete shear walls in an L-shape are highly valued in modern architecture for their ability to withstand lateral loads. However, incorporating openings, necessary for functional reasons, can compromise their structural integrity. Our study investigates the effects of offset openings on compression, tension, and shear stresses in these walls, aiming to provide design recommendations. We also analyzed shear forces and top-floor displacements in buildings with various opening configurations through numerical simulations conducted on ten-story structures. The results indicate that shear stresses increase when openings are off-center. Nevertheless, regardless of their position, the optimal proportion of openings is found to be 30% of the shear wall surface.
BJPE Brazilian Journal of Prod Engineering’s Post
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#ASCE7_22 , Page 123 12.7.3 Structural Modeling: A mathematical model of the structure shall be constructed for the purpose of determining member forces and structure displacements resulting from applied loads and any imposed displacements or P-delta effects. The model shall include the stiffness and strength of elements that are significant to the distribution of forces and deformations in the structure and represent the spatial distribution of mass and stiffness throughout the structure. In addition, the model shall comply with the following: 1. Stiffness properties of concrete and masonry elements shall consider the effects of cracked sections. 2. For steel moment frame systems, the contribution of panel zone deformations to displacement and drift shall be included.
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Our new research is out: “Fire performance of wood–steel hybrid elements: finite element analysis and experimental validation” 🔥 🏗️ Wood–steel hybrid (WSH) elements are a promising innovation in sustainable construction, combining high load capacity with a reduced environmental impact. But what about fire resistance? This study tackles the critical challenge by analyzing the fire performance of a novel WSH slab featuring laminated veneer lumber (LVL) beech panels and a trapezoidal steel profile. 🔑 Key Highlights ✅ Development of numerical models to simulate convection, radiation, and conduction. ✅ Experimental validation of temperature profiles and charring rates. ✅ Analysis of the impact of steel sheet geometry on fire resistance. ✅ CT scanning for post-fire evaluation of material properties. 📝 Read the full study here: https://lnkd.in/dgr4WZN4 Let’s continue pushing boundaries in #SustainableConstruction and #FirePerformance! Your thoughts and ideas are welcome. 💬 #WoodSteelHybrid #WoodResearch
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Structural modelling of Steel Shed using Staadpro....
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https://lnkd.in/dYxHV3sB Abstract The results of shaking table tests from previous studies on a one-story, two-bay reinforced concrete frame—exhibiting both shear and axial failures—were compared with nonlinear dynamic analyses using simplified models intended to evaluate the collapse potential of older reinforced concrete structures. To replicate the nonlinear behavior of columns, whether shear-critical or primarily flexure-dominant, a one-component beam model was applied. This model features a linear elastic element connected in series to a rigid plastic, linearly hardening spring at each end, representing a concentrated plasticity component. To account for strength degradation through path-dependent plasticity, a negative slope model as degradation was implemented, linking points at both shear and axial failure. The shear failure points were determined through pushover analysis of shear-critical columns using Phaethon software. Although the simplified model provided a reasonable approximation of the overall frame response and lateral strength degradation, especially in terms of drift, its reduced computational demands led to some discrepancies between the calculated and measured shear forces and drifts during certain segments of the time-history response. Keywords: nonlinear dynamic analysis; collapse; axial and shear failures; reinforced concrete columns; one-component beam model
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