CESAR-LCPC CESAR-LCPC
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About CESAR
CESAR is a finite element software for structural analysis designed and verified by the IFSTTAR institute (formerly known as LCPC - Central Bridges and Roadworks Laboratory). Under continuous development since 1983 in order to meet civil engineering standards, CESAR is dedicated to underground works, civil works, soils mechanics, hydrogeology and environmental challenges.
Since 2003, itech joined the software’s development team and brings its expertise in designing powerful and accessible user interfaces. Thus, the close collaboration between IFSTTAR and itech brings CESAR as a highly featured and professional software both in 2D and 3D.
Geotechnics
CESAR 2D or 3D is an easy-to-use program for various geotechnical projects.
Major contractors and consultants in civil engineering chose CESAR-LCPC for its unique capabilities to analyse the staged construction of geotechnical structures, to capture the soil-structure interaction and to accurately predict soil stability and settlements.
The user-friendly interface guides the user throughout the specification of the construction stages. Complex geotechnical phenomena can thus be solved with CESAR-LCPC: non-linear soil behaviour, soil-structure interaction, hydraulic conditions, dynamics…
Tunnels
CESAR-LCPC has been used in many important tunnel projects (Groene Hart tunnel, Subway of Cairo, Channel tunnel...).
It is renowned for its capabilities to model projects from simple geometries (plane strain or axisymmetric analysis) to complex 3D intersections with applications of tunnelling methods (cut-and-cover, TBM, NATM...).
CESAR offers a wide and detailed set of features for modelling various aspects of tunnel engineering: construction process, lining setup, long-term effects, hydraulic loads, thermal loads...
The convergence-confinement method is proposed in a parametric and didactic way through a specific tool in C-TUNNEL, software dedicated for "draft" projects of tunnels.
Concrete
As a classic finite element program, CESAR is equipped with standard features for structural analysis: beams and shell elements, springs and other links, various types of loads, static and dynamic analysis algorithms…
CESAR proposes several constitutive models dedicated to the modelling of concrete (parabolic criterion, Willam-Warnke…) or masonry (homogenization, …).
More CESAR is fitted to analyse the concrete behaviour in service or ultimate conditions. Specific modules, named TEXO & MEXO, have also been developed to enable modelling of the early age concrete behaviour. TEXO serves to compute both the temperature and degree of hydration fields, used to express the material’s state of hardening. These results are then input in the MEXO module in order to determine the displacement and stress fields, in the aim of predicting the risk of cracking at early age.
