Modeling and Analysis of Multi-Story Residential Building Made of Load-Bearing X-Lam Timber Panels Using RFEM 6

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223x

102x

CLT Multi-Story Building

After an initial phase, in which the X-lam material and the mechanical connections used in it were presented from a theoretical point of view, three successive models were created using the software described above, from the most "rigid", that is, without taking into account the effect of the mechanical connections present in the residential building under study, to the most "deformable", obtained using the "method of equivalent stiffnesses" from the most "realistic" model, in which all the mechanical joints have been modeled in order to evaluate their dynamic responses, in terms of proper periods of the main vibration modes, generalized interstory displacements due to the seismic combination "SLD" and seismic shear at the base due to the seismic combination "SLV" of a sampled wall representative of all the walls present, according to the NTC2018, just of the site where the residential building under study was built.

To do this, a linear dynamic analysis was performed with a response spectrum, and the X-Lam material was modeled with its actual stiffnesses in the first two models, and usingequivalent stiffnesses in the last model, but taking into account its actual orthotropic behavior in all models.

From the results obtained in the following thesis, it is possible to state that the modeling of a structure made of structural xlam timber panels cannot disregard the correct modeling of its mechanical connections, which, with their deformability, have a significant impact on the deformability of the structure itself and on the dynamic parameters of the entire building, even if a faster method is used. However, using the faster method, such as the "Method of Equivalent Stiffnesses", it is possible to model the structure more quickly and obtain results that are not too far from those obtained using the more realistic method, that is, local modeling of all the mechanical connections present in the structure, but remembering that the results obtained in this way prove to be unfavorable in the "Life-Saving Limit State" safety comparisons.