NATIONAL MUSEUM OF ARCHAEOLOGY, LISBON, PORTUGAL.
- PHOTOGRAMMETRIC DOCUMENTATION
- INSPECTION & DIAGNOSIS
- FEM MODEL
- SEISMIC ANALYSIS (PUSHOVER)
PHOTOGRAMMETRIC DOCUMENTATION
GROUND FLOOR PLAN
SOUTH FACADE - ORTHOPHOTOS
NORTH FACADE - ORTHOPHOTOS
PHOTOGRAMMETRIC DOCUMENTATION
WEST FACADE - ORTHOPHOTOS
WEST GALLERY
ORTHOPHOTO OF THE VAULTS
WEST GALLERY
ORTHOPHOTO OF THE INT
GROUND FLOOR PLAN
WALLS
IDEALIZATION OF BUILDING GEOMETRY AND STRUCTURAL SYSTEMS
The geometry of the vaults was based on the photogrammetric models. While the main entrance composed of van-central vault and tow ribbed-vault on the sides, the west and east galleries composed on 12 succession vaults. The profile of each rib was obtained from the point cloud, the cross-sections were simplified to rectangular cross section with same are moments of inertia.
After finalizing the historical and geometrical documentation of the building, the point cloud was created from the photogrammetric model, then imported into AutoCAD and Rhino. Using these software, the building modelled as nine unique units as demonstrated below, first imported and validated in Diana separately, then combined together for nonlinear analysis later on.
MODEL CALIBRATION
Operational Modal Analysis (OMA) was performed on the museum. The result of the experimental dynamic identification will enable the development of a 3D finite element model able to match the results of OMA.
In order to obtain better agreement between the model behavior and that of the actual building, model calibration via elastic stiffness updating was performed. Due to time restrictions, it was done manually via parametric analysis. The thirteen materials considered as independent variables for the updating are given in the Table and their location in the building is indicated below.
SEISMIC ANALYSIS RESULTS
PUSHOVER ANALYSIS RESULTS
COMPARISON OF +Y & -Y BEHAVIOR
The pushover plot for the +Y loading direction is compared against that for the -Y direction here. While the maximum horizontal acceleration for the -Y case is 0.2g, a peak value of 0.35g is obtained in the opposite direction.
SEISMIC ANALYSIS RESULTS
PUSHOVER ANALYSIS RESULTS
Case NY and NY-NR: building Y-displace ment with roof trusses (top) and without roof trusses (bottom).
