| dc.description.abstract | In this thesis parametric analyses from numerical and analytical methods for one-story CLT shear
walls are compared and validated for the upcoming Eurocode 5. The analytical methods are the
already proposed method in Annex R and a new proposal from Arup. In addition, numerical and
analytical analyses for multistory behavior are compared to see their preciseness for multistory
behavior. The thesis only looks at kinematic rocking as a contribution to lateral deflection.
The parametric analysis for one-story utilizes Open Application Programming Interface with
Python to manipulate the model made in the Finite Element Method program SAP2000 to do
different series of analyses. The method allows for the extraction of the result made in the numerical analysis and compares the results from the analytical analyses. The method changes the
different parameters such as stiffness of hold-downs, vertical joint stiffness, and the number of
panels in segmented walls.
For multistory calculations Python is used for the analytical methods and hand modeling is done
to make the SAP2000 models. Only certain cases are looked at in this scenario and therefore the
comparison is done by hand.
The results showed very good agreement between the two analytical models from Annex R and
Arup and the numerical analyses in SAP2000 when looking at single-story behavior. For multistory behavior, Annex R generally had a larger displacement, and Arup generally had a lower
displacement when Kv > Kh. One difference between these methods is their way of calculating
the rotation of the walls and that may be the reason for the discrepancy between those methods.
In addition, Arup uses the moment at the top of the wall and lateral shear force as its input, while
Annex R only uses the moment at the bottom of the wall. This may also be a contributor to
the difference in multistory deflection. More studies are needed to further validate the analytical
methods for multistory calculations. | |
