Palazzo Meridia Office and Retail Building, Nice, France
The recent trend in high-rise construction is clearly dominated by timber as the most ecological and environmentally-friendly material. The project promoter Nexity Resolutely is committed to constructive building solutions with a reduced carbon footprint through various labels and certifications included in its several office and commercial timber projects.Among these is the Palazzo Meridia, which is currently the tallest CLT office building in France. Dlubal customer CBS-Lifteam was responsible for the planning, supply, and installation of the timber structure.
|Timber Structural Analysis and Design||
Calculation and ModelingThe concrete staircases act as bracing for the entire timber-frame structure consisting of visible glulam beams and CLT facade elements. Large CLT panels with dimensions of 11 ft x 56 ft and 9 ft x 56 ft were used for the façade walls and floors to speed up assembly. The building construction was reduced to 5 months, saving a total of 10 days per story.
For comparable results with the reinforced concrete design carried out by a partner engineering office, CBS-Lifteam created a multi-material timber and concrete model including all structure stiffnesses. The Dlubal Software RF-DYNAM Pro add-on module was used to determine seismic effects and deformations.
The structural analysis of the CLT elements was carried out with the RF-LAMINATE add-on module. RF-TIMBER Pro designed and dimensioned the timber frame structure. Since the office building is located in a region prone to earthquakes (in Nice, earthquake zone 4), seismic analysis was considered, assuming the horizontal forces would be transmitted by the CLT floors acting as diaphragms to the concrete staircases. The timber façades would not contribute additional bracing to the structure.
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This article compares the design with the one in the following article: Design of Concrete Columns Subjected to Axial Compression with RF-CONCRETE Members. It is therefore about taking exactly the same theoretical application carried out in RF-CONCRETE Members and reproducing it in RF-CONCRETE Columns. Thus, the objective is to compare the different input parameters and the results obtained by the two add-on modules for the design of column-like concrete members.
RFEM/RSTAB add-on module RF-/TIMBER CSA | Design of members made of timber according to CSA 086 (Canadian standard)
The material model Orthotropic Masonry 2D is an elastoplastic model that additionally allows softening of the material, which can be different in the local x- and y-direction of a surface. The material model is suitable for (unreinforced) masonry walls with in-plane loads.
- When comparing RF‑CONCRETE Columns with another design software, I get different results. How to explain the differences?
- Is it possible to perform design without an additional reinforcement in RF‑CONCRETE Surfaces?
- My aim is to mesh a circular hole plate in a mapped way. Is such a meshing possible in RFEM?
I have installed Halfen HDB 13.60 on my PC. The version does not seem to be compatible with RF-PUNCH Pro anymore. The interface does not work. I am using version 5.26.02 of RFEM.
- When solving a foundation slab under a circular tank, I do not see the contact stress in the middle of the surface. What could be the reason for this?
The design criterion for VEd/VRd,c is displayed as governing, although there should be a shear reinforcement designed. Also, the design of VEd/VRds is missing. Why is that?
- Which calculation method is the basis for the stability analysis in RF‑CONCRETE Columns?
- Is it possible to enter a curtailed reinforcement in RF‑CONCRETE Columns?
- Is it possible to divide a free surface load by the existing lines in RFEM?
- I obtain different results when comparing the deformation analysis in the RF‑CONCRETE add-on modules and another calculation program. What could be the reason for this?
Programs Used for Structural Analysis
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
Seismic and static load analysis using the multi-modal response spectrum analysis
Dynamic and seismic analysis including time history analysis and multi-modal response spectrum analysis
Nonlinear dynamic analysis to external excitations