A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Finite-Element Analysis of Wood-Frame Houses under Lateral Loads
The study dealt with rigorous finite-element analysis of wood-frame houses to study the influence of the roof, side and partition walls, and base connection (of wall to lower structure, such as a concrete foundation and a wood floor system) on the in-plane load resistance of the walls. Detailed finite-element models of wood-frame houses were developed by incorporating all the connection details. Simulation results of a complete house and a standalone wall of a full house were validated against responses from the literature. Based on the simulated responses, it was demonstrated that the in-plane load resistance of a wall is significantly underestimated when the resistances are evaluated from a standalone wall considering no system effects from the roof and side and partition walls. Hence, a system effect factor is proposed as a function of wall aspect ratio and presence of roof to take into account the increase in in-plane load resistances of the walls calculated based on the available analytical methods. The results of the analysis also demonstrate the effect of the connection between the wall frame and the lower structure. When the wall frame is connected to the lower structure with nails instead of anchor bolts, the walls of the house tend to overturn rather than undergo shear deflection of the oriented strand board panels, resulting in lower in-plane load resistances. Therefore, based on the simulated responses, a reduction factor is proposed for the in-plane load resistance of the wall when the wall is connected to the lower structure with nails.
Finite-Element Analysis of Wood-Frame Houses under Lateral Loads
The study dealt with rigorous finite-element analysis of wood-frame houses to study the influence of the roof, side and partition walls, and base connection (of wall to lower structure, such as a concrete foundation and a wood floor system) on the in-plane load resistance of the walls. Detailed finite-element models of wood-frame houses were developed by incorporating all the connection details. Simulation results of a complete house and a standalone wall of a full house were validated against responses from the literature. Based on the simulated responses, it was demonstrated that the in-plane load resistance of a wall is significantly underestimated when the resistances are evaluated from a standalone wall considering no system effects from the roof and side and partition walls. Hence, a system effect factor is proposed as a function of wall aspect ratio and presence of roof to take into account the increase in in-plane load resistances of the walls calculated based on the available analytical methods. The results of the analysis also demonstrate the effect of the connection between the wall frame and the lower structure. When the wall frame is connected to the lower structure with nails instead of anchor bolts, the walls of the house tend to overturn rather than undergo shear deflection of the oriented strand board panels, resulting in lower in-plane load resistances. Therefore, based on the simulated responses, a reduction factor is proposed for the in-plane load resistance of the wall when the wall is connected to the lower structure with nails.
Finite-Element Analysis of Wood-Frame Houses under Lateral Loads
Quayyum, Shahriar (author)
2019-09-19
Article (Journal)
Electronic Resource
Unknown
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