Fully validated construction software for glued-in rods (GIR)
| Reference number | |
| Coordinator | CHALMERS TEKNISKA HÖGSKOLA AKTIEBOLAG - Chalmers tekniska högskola AB, Göteborg |
| Funding from Vinnova | SEK 1 985 000 |
| Project duration | October 2017 - June 2020 |
| Status | Completed |
| Venture | Eurostars |
Purpose and goal
The goal of this project has been to create and deliver a package of accurate and reliable design models for Glued-in-Rod (GiR) timber joints for different loading cases, to be implemented by Buildsoft into Timboost software for the market of timber construction industry. TimBoost’s background design model guarantees a standard performance of the GiR joints for gaining their maximum utilization.
Expected results and effects
The outcome of the project was a package of validated semi-empirical/analytical-based design and analyses models for GiR joints in the form of explicit formulations. The design models guarantee a standard performance of the GiR joints with different configuration made of threaded steel rods and rebars, bonded in glulam or structural timber with the commonly used two-component epoxy or polyurethane adhesives. A software named Timboost, developed by Buildsoft, utilizes the proposed design models to reliably calculate the load carrying capacity of GiRs for different failure modes.
Planned approach and implementation
The proposed validated semi-empirical and analytical design models, developed on the basis of the scientific approaches: FE numerical simulations, nonlinear fracture mechanics-based mathematical modeling and destructive experiments, guarantee a standard performance of the Glued-in-Rod connections and may be used to update the latest version of Eurocode 5: design of timber structures. The proposed design models have been implemented into "Timboost", a design software for the market of timber construction industry developed by Buildsoft.