Date of Award

6-2020

Degree Name

Master of Science in Engineering

Department

Civil and Construction Engineering

First Advisor

Dr. Xiaoyun Shao

Second Advisor

Dr. Upul Attanayake

Third Advisor

Dr. Hexu Liu

Keywords

Numerical performance evaluation, non-linear, analysis, SAP2000, wooden frame, adhesive

Access Setting

Masters Thesis-Open Access

Abstract

The objective of the research is divided into two folds. The first objective is to study the state-of-the-art modeling method for the wooden frame construction, while the second objective is to evaluate the performance of a wooden frame structure with construction adhesives under hazardous loading conditions using the selected numerical modeling method. The numerical modeling tools were classified under academic and commercial categories based on the purpose of their development. Both academic and commercial tools were further classified based on model types of the structural systems (i.e., shear walls and three-dimensional (3D) buildings) and the applied loads (i.e., wind loading and seismic loading). Among different commercial tools studied, SAP2000 developed by the Computer and Structures, Inc., Berkeley, USA, was selected for modeling the wooden frame structures in the second part of this study. Specifically, the use of the non-linear link element available in SAP2000 to model wood structure connections was adopted in several studies, and its feasibility to capture non-linear wood structural responses when subject to wind and seismic loadings was demonstrated. Performance evaluation of the wooden frame, shear wall, and 3D building with the application of elastomeric adhesives under different loading conditions was carried out. The experimental force-displacement responses of the adhesive and nail connections were used to define the link element behavior in the models. The validation of all three models was first done by comparing the link responses obtained from the model with the experimental data. Also, the 3D building model was validated by the symmetrical structural responses, including reactions, stress distribution, and roof deformations. Compared to the respective model with nail connections, the frame model with adhesive connections shows higher restoring force against the applied displacement, greater shear force and bending moment; the shear wall model’s restoring force is increased by 1.5 times and its effective stiffness increased by 4 times; the building model with the adhesive roof connections resists approximately 3 times more uplift pressure before roof failure.

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