CLT Residential Building in Girona, Spain
Blazquez Guanter SLP
Estudi M103 SLPEGOIN
EGOIN SA was awarded a timber design project for 35 new CLT apartments in Girona, Spain. Cross-laminated timber (CLT) was selected as the building material due to its sustainability, ability to filter CO2, and the architectural design freedom.
Because the building is located in a seismic area, timber materials can reduce the horizontal load impact due to the characteristics (lightness and ductility). The structure is a 6-story CLT wall system which better absorbs the vertical and horizontal loads.
Additionally, the complete prefabrication of the CLT panels reduced the assembly time to only 6 weeks. Thermal bridging was also reduced which increased the moisture control of the panels to ensure an optimal indoor climate.
The Dlubal customers EGOIN and Estudi M103 SLP collaborated together for the design process under the responsibility of Blazquez Guanter SLP. The program RFEM including the add-on module RF-LAMINATE were used to consider the orthotropic stiffness and strength for the structural analysis and design. CLT has the capacity to withstand bidirectional loads, which help to increase the stiffness compared to a uniaxial structural system.
In RFEM, line hinges based on the actual connection stiffness and nonlinear behavior could easily be considered. The line force diagrams were also produced in RFEM for further consideration in the RF-LIMITS add-on module when designing the connections. The RF-DYNAM Pro add-on module was utilized to calculate the natural vibrations and to perform a modal response spectrum analysis according to the Spanish standard NCSE-02.
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Programs Used for Structural Analysis
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
Timber design according to Eurocode 5, SIA 265 and/or DIN 1052
Deflection analysis and stress design of laminate and sandwich surfaces
Dynamic analysis of natural frequencies and mode shapes of member, surface, and solid models
Dynamic and seismic analysis including time history analysis and multi-modal response spectrum analysis
Seismic and static load analysis using the multi-modal response spectrum analysis
Comparison of results with defined limit values