3D Macro is the result of years of academic research. It provides the most advanced models for the simulation of seismic behavior of masonry buildings and masonry-concrete dual structures.
The program is developed by “Gruppo Sismica srl.” an Italian company supporting various University research groups dedicated to the development of state of the art theoretical modeling for non-linear structural analysis. The research ranges from the structural modeling of masonry buildings, to the evaluation of seismic vulnerability of new and existing buildings.
CSI Italia is pleased to make 3D Macro available through its sales network.
The macro element
3D Macro represents the masonry walls as an assembly of planar macro-elements, based on a model developed by Prof. Ivo Caliò, at the University of Catania. This model simulates the three main failure mechanisms in the wall plane, through the use of a special quadrilateral macro-element. This element also allows for assessment of the interaction between masonry panels and reinforced concrete members. 3D Macro is a compromise between the very complex finite element nonlinear modeling of masonry structures and over simplified approaches such as the “Equivalent Frame” or the POR techniques.
Seismic vulnerability assessment
The Seismic Assessment module provides vulnerability evaluation of buildings under seismic action. Precisely, this module generates, for each pushover analysis, the data needed for the definition of the elastoplastic SDOF system, equivalent to the global behavior of the building. Subsequently, checks are carried out following the Limit States approach.
Masonry-Concrete Dual Structures
The Dual Structure module allows adding of reinforced concrete members to the masonry model. It includes the following features:
- concrete shear walls
- concrete bond beams
- concrete columns with full 3D behavior
- automatic calculation of PMM interaction diagrams
- user defined reinforcing
Out of Plan Failure
The 3DM-FP module provides checking of masonry walls for out of plan overturning. Checks can be performed according to both linear and non-linear analysis approach. The checks account for the effect of actual floors fastening and for the contribution of chains and concrete bond beams.