Start Date

10-5-2017 11:00 AM

End Date

10-5-2017 1:00 PM

Subjects

Structural frames -- Design and construction, Iron and steel buildings -- Thermal properties -- Mathematical models, Finite element method, Iron and steel building -- Joints -- Testing

Description

“Thermal bridge” is a term used for structural or non-structural elements that have higher heat transfer than any other elements or spots in the building envelope, reducing the efficiency of the building thermal insulation. About 20% of the heat occurs via such thermal bridges. Thermal insulations (thermal breaks) are used within a steel connection to mitigate the effect of thermal bridges. In this research, connections with steel fillers studied by Dusicka (2007) were simulated using the finite element (FE) program ABAQUS. The results from the FE model were validated with those from the experimental work done by Dusicka (2007) and showed very close behavior. After validating the numerical model, the steel fillers were replaced by alternative fillers with improved thermal properties as part of a parametric study. The main objective of this research is to prove the feasibility of using alternative fillers that have improved thermal properties for steel connections. This will provide structural engineers and architects with means to design buildings with improved thermal properties, hence advance their sustainability.

Persistent Identifier

http://archives.pdx.edu/ds/psu/20085

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May 10th, 11:00 AM May 10th, 1:00 PM

FE Analysis of Alternative Thermal Breaks for Steel Buildings

“Thermal bridge” is a term used for structural or non-structural elements that have higher heat transfer than any other elements or spots in the building envelope, reducing the efficiency of the building thermal insulation. About 20% of the heat occurs via such thermal bridges. Thermal insulations (thermal breaks) are used within a steel connection to mitigate the effect of thermal bridges. In this research, connections with steel fillers studied by Dusicka (2007) were simulated using the finite element (FE) program ABAQUS. The results from the FE model were validated with those from the experimental work done by Dusicka (2007) and showed very close behavior. After validating the numerical model, the steel fillers were replaced by alternative fillers with improved thermal properties as part of a parametric study. The main objective of this research is to prove the feasibility of using alternative fillers that have improved thermal properties for steel connections. This will provide structural engineers and architects with means to design buildings with improved thermal properties, hence advance their sustainability.