Structural Response of Balloon-Type Cross-Laminated Timber at Component and Building Levels

This thesis investigates the performance of balloon-type cross-laminated timber (CLT) buildings, with a particular focus on hybrid structures incorporating balloon-type CLT shear walls and steel frames. The study evaluates the effects of mass and vertical geometric irregularities in these hybrid buildings using Modal Response Spectrum Analysis. Key findings highlight that mass irregularities significantly impact inter-story drift, especially when mass is added at different levels. The location of this mass addition plays a critical role in the building's seismic response. Additionally, the vertical geometric irregularities affect the seismic response in unique ways across two orthogonal directions.

Author	Gayan Kandethanthri
University	Concordia University, Canada

Furthermore, the research examines the lateral performance of unbonded post-tensioned balloon-type CLT shear walls. Through traditional sensitivity analysis and machine learning models, critical parameters influencing the lateral and uplifting responses of these shear walls under lateral loading are identified. Various machine learning algorithms were applied to determine the best predictive model for these parameters. Additionally, Shapley Additive Explanations (SHAP) were used to provide deeper insights into the factors influencing the lateral and uplifting responses.

This thesis contributes valuable perspectives on integrating advanced computational techniques with traditional structural engineering practices, promoting the development of resilient and sustainable building designs.

Links

Structural Analysis and Design Software for Timber Structures

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Complete Master Thesis (PDF)

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