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Dynamic Response of Tall Timber Buildings under Service Load – DynaTTB

  • PROJECT TITLE:  Dynamic Response of Tall Timber Buildings under Service Load – DynaTTB
  • PROJECT LEADER:  RISE/ Research Institute of Sweden/ for InnoRenew CoE –  Iztok Šušteršič, PhD
  • PERIOD: 1. 3. 2019 (36 months)
  • BUDGET: 105.000 EUR for InnoRenew CoE
  • FINANCED: European Union – ForestValue Research Programme & MIZŠ
  • PARTNERS:

Coordinator of the project: RISE Research Institute of Sweden (Sweden);

Partners: NTNU Norwegian University of Science and Technology (Norway); University of Exeter (UK); University of Ljubljana (Slovenia); InnoRenew Renewable Materials and Healthy Environments Research and Innovation Centre of Excellence (InnoRenew CoE) (Slovenia); Centre Scientifique et Technique du Bâtiment (France); Linnaeus University (LNU) (Sweden); Moelven Töreboda AB (Sweden); Moelven Limtre AS (Norway); SWECO Norge AS avd Lillehammer (Norway); Smith and Wallwork Engineers Ltd (UK); GALEO (Spain); Eiffage Immobilier Sud Ouest (France); ARBONIS (France).

Project Summary

The research hypothesis is that it is possible to create computational models for Tall Timber Buildings, based on system identification and calibration of advanced Finite Element (FE) models. This will be underpinned by data from full-scale tests of a number of representative mid-to-high rise timber buildings in Norway, Sweden, France, Slovenia and UK. The project plan will utilize unique horizontal electro-dynamic sliding shakers from the University of Exeter (UK) and CSTB (France) to perform vibrational tests and use the data to estimate Frequency Response Functions (FRFs). This unique approach will enable thorough identification of the structural systems for TTBs. Additionally, more detailed laboratory testing will be performed on both structural connections, as well as non-structural components, to identify the cause of and quantify the vibration energy dissipation. Finally, both sets of experimental data will be integrated to calibrate FE-models serving as the basis for a new generation of modelling guidelines, to calculate wind sway response of TTBs for their vibration serviceability at the design stage.

Overall objective of the project: To identify experimentally a number of full-scale TTB structures within Europe and, based on these results, develop representative FE-models for predicting the vibration response of TTBs exposed to wind-induced dynamic loading.

Scientific and technological objectives are to:

  • Quantify the structural damping in as-built TTBs.
  • Identify and quantify the effects of connections and non-structural elements on the stiffness, damping and wind-induced dynamic response of TTBs.
  • Develop a bottom-up numerical FE-model for estimating the dynamic response of multi-storey timber buildings.
  • Validate the predicted response with in-situ measurements on TTBs.
  • Disseminate findings via a TTB Design Guideline for design practitioners.

 

Collectively, this research will enable improved and more reliable designs for TTBs, taking account of the effects of wind and drawing on information contained in the subsequently produced Design Guideline for TTBs.