Centre Georges Pompidou-Metz, France
Structural Timber Design
Demathieu & Bard
Holzbau Amann GmbH
Shigeru Ban Architects Europe
Jean de Gastines Architectes
Metz Métropole, France
The arts and cultural center "Centre Pompidou-Metz" in France is a branch of the museum of modern and contemporary arts "Centre Georges Pompidou" in Paris, one of the most significant museums worldwide.
The building was designed by Shigeru Ban, a Japanese architect, and represents an oversized Chinese straw hat (external dimensions: 100 m x 100 m).
The girders are symbolizing the straw plaited in three directions, dividing the surface in regular hexagons and triangles.
The hat is pierced by three big tubes, consisting of reinforced concreted, stacked on top of each other. The top of the hat is crowned by a hexagonal steel tower.
The roof structure is made of timber beams and consists of intersecting multi‑layer chords. The curved glued-laminated beams are connected by prestressed threaded bars and disk springs in the points of intersection. In this way, the structural transmission of forces in the joints is ensured by friction.
The parallel running chords are connected to each other by plywood panels and screw threads. Thus, they have the effect of a Vierendeel truss with semi‑rigid connections.
Structural Analysis and Design
The complex system having approx. 41.000 members was designed by the Swiss company SJB.Kempter.Fitze, using RSTAB and the add‑on modules TIMBER, DYNAM, and RSBUCK.
The entire supporting structure made of steel and reinforced concrete was designed by means of a "simplified" system in order to take into account appropriately the effects resulting from mutual dependency.
To calculate the internal forces in the connections and structural components, each cord and shear plate as well as the joint sections had to be modeled with the respective spatial orientation.
The load situations were determined by CSTB (Centre scientifique et technique du bâtiment) in a comprehensive wind tunnel analysis. In addition to the self‑weight, temperature and live loads, the calculation included 96 wind load cases, 80 snow load cases and the resulting membrane loads.
Finally, the 3D FEA software RFEM was used to model and design 216 connections to the steel construction.
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Programs Used for Structural Analysis
The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions
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
Stability analysis according to the eigenvalue method
Dynamic analysis of natural frequencies and mode shapes of member 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