Influence of doweled connection on the dynamic response of tall timber buildings

PROJECT CODE: BI-NO/20-22-003
PROJECT TITLE: Influence of doweled connection on the dynamic response of tall timber buildings
PROJECT TEAM: Iztok Šušteršič, PhD (leader), Igor Gavrić
PERIOD: 01.11.2020 – 31.10.2022
BUDGET: €3,000.00
FINANCING: Slovenian Research Agency (ARRS)
PARTNERS: InnoRenew CoE (Slovenia); Norwegian University of Science and Technology (Norway)

The project’s first aim is to perform a series of tests on doweled connections – like the connections used in the Mjøstårnet tall timber building in Norway. A modified non-standard loading protocol will be employed to better simulate wind loading conditions and investigate low displacement damping, followed by a standardized protocol that will be used to further derive the full hysteresis parameters needed for seismic design. Experimental results will then be used as input for the assembly of a finite element model (FEM) of the Mjøstårnet building. This full building model will be calibrated to both our new connection testing results and the in-situ testing of the building with ambient and force vibration. Nonlinear FEM will be employed to assess the overall parameters that were used (and, in some cases, assumed) to design the building in the first place – information that will be extremely important for building design code assessment and eventual modification. The model will also be used for simulation of hypothetic seismic loads. This project will demonstrate up to which peak ground acceleration, such a top-heavy building design, could still be used in a seismic location, which is of great importance if the building’s concept were to be replicated in a seismically active area.

InnoRenew CoE project activities

InnoRenew CoE researchers will perform doweled connection experimental testing. Experimental results will be used as input for connection modelling of the 18-storey Mjøstårnet building in Norway, which uses a truss system to resist horizontal loads. Possibilities to replicate the Mjøstårnet building’s concept in other, seismically active places will be investigated.